.
`
`United States Patent [19]
`Unlted States Patent [19]
`Lalwani
`Lalwani
`
`(cid:9) (cid:9)
`
`[54] ROOFING ADHESIVE
`[54] ROOFING ADHESIVE
`[75] Inventor:
`Steven S. Lalwani, Upper Montclair,
`[75] Inventor: Steven S. Lalwani, Upper Montclair,
`NJ.
`N.J.
`.
`_
`.
`[73] Assignee: GAF Corporation, Wayne, N.J.
`[73] Asslgnee' GAF Corporatmn’ Wayne’ NJ'
`[21] Appl. No.: 34,239
`[21] APPL NO-Z 34,239
`[22] Filed:
`AP“ 6, 1987
`Apr. 6, 1987
`[22] Filed: (cid:9)
` CO8L 95/00; CO8L 53/02;
`[51] Int. C1 4
`[51] Int. Cl.‘ .................... .. C08L 95/ 00; CQBL 53/02;
`B32B 11/02; B32B 27/32
`52 U S Cl
`B3213 11/
` 524/64; 524/62;
`[52] U.S. CI. (cid:9)
`' """""""""""""""""""" "
`’ 524/622
`[
`1
`' ‘
`524/68
`_
` 524/62, 64, 68
`[58] Field of Search (cid:9)
`[58] Field of Search ............................ .. 524/62, 64, 68
`[56] (cid:9)
`References Cited
`[56]
`References Cited
`US. PATENT DOCUMENTS
`U.S. PATENT DOCUMENTS
`4,430,465 2/1984 Abbott (cid:9)
` 524/68
`4,430,465 2/1984 Abbott ................................ .. 524/68
` 524/62
`4,459,157 7/1984 Koons (cid:9)
`4,459,157 7/ 1984 Koons ...... ..
`524/62
`4,460,723 7/1984 Rollmann
`524/68
`4,460,723 7/1984 Rollmann (cid:9)
` 524/68
`4,485,201 11/1984 Davis (cid:9)
` 524/68
`4,485,201 11/1984 Davis ....... ..
`524/68
` 524/68
`4,490,493 12/1984 Mikols (cid:9)
`4,490,493 12/1984 Mikols ...... ..
`524/68
`4,530,652 7/1985 Buck et al. (cid:9)
` 524/68
`4,530,652 7/1985 Buck et al.
`.. 524/68
`4,541,399 10/1985 Fujihara etal. ................. ..‘.'.. 524/62
`4,547,399 10/1985 Fujihara et al. (cid:9)
` 524/62
`Primary Examiner-Herbert J. Lilling
`Primary Examiner—Herbert J. Lilting
`Attorney, Agent, or Firm-Marilyn J. Maue; Joshua J.
`Attorney, Agent, or Firm—Marilyn J. Maue; Joshua J.
`Ward
`Ward
`
`[11] Patent Number:
`[11] Patent Number: (cid:9)
`[45] Date of Patent: (cid:9)
`[45] Date of Patent:
`
`4,755,545
`4,755,545
`Jul. 5, 1988
`Jul. 5, 1988
`
`ABSTRACT
`[57]
`ABSTRACT
`[57] (cid:9)
`A low temperature self-sealing roofing adhesive blend
`A low temperature self-sealing roo?ng adhesive blend
`comprising
`comprising
`(a) 50-95% by weight of a bituminous component hav-
`(a) 50-95% by weight of a bituminous component hav
`ing an asphalt component Index (ACI) less than 0.26
`ing an asphalt component Index (ACI) less than 0.26
`and an asphaltene content less than 20% which com
`and an asphaltene content less than 20% which com-
`ponent is a road paving asphalt or a blend of road
`ponent is a road paving asphalt or a blend_of road
`paving asphalt and a hard resin asphalt combined in a
`paving asphalt and a hard resm asphalt combmed in a
`weight ratio of between about 1:2 and about 5:1;
`weight ratio of between about 1:2 and about 5:1;
`(b) 1-6% by weight of a thermoplastic block polymer of
`(b) 1-6% by weight of a thermoplastic block polymer of
`styrene and butadiene monomers consisting essntially
`styrene and butadiene monomers consisting essntially
`of between 0% and 90% of the styrene/butadiene
`of between 0% and 90% of the styrene/butadiene
`diblock polymer having a Brook?eld viscosity (25
`diblock polymer having a Brookfield viscosity (25
`wt. % toluene solution) at 77° F. of between about
`wt. % toluene solution) at 77° F. of between about
`500 and about 5,000 cps and between 100% and 10%
`500 and about 5,000 cps and between 100% and 10%
`of the styrene/butadiene/styrene triblock polymer
`of the styrene/butadiene/styrene triblock polymer
`having a Brookfield viscosity (25 wt. % toluene solu-
`having a Brook?eld viscosity (25 wt. % toluene solu
`tion) at 77° F. of between about 1,000 and about
`tion) at 77° F. of between about 1,000 and about
`50,000 cps and
`50,000 cps and
`(c) 4-40% by weight of an inert ?ller.
`(c) 4-40% by weight of an inert filler.
`The invention also pertains to the use of the above blend
`The invention also pertains to the use of the above blend
`as a roo?ng self-sealing adhesive.
`as a roofing self-sealing adhesive.
`
`14 Claims, 1 Drawing Sheet
`14 Claims, 1 Drawing Sheet
`
`Petitioner - Owens Corning
`Ex. 1009, p. 1 of 7
`
`(cid:9)
`(cid:9)
`

`

`U.S. Patent (cid:9)
`US. Patent
`
`Jul. 5, 1988
`Jul. 5, 1988
`
`4,755,545
`4,755,545
`
`cz
`r a
`
`on
`
`,
`
`Petitioner - Owens Corning
`Ex. 1009, p. 2 of 7
`
`0.
`
`N..
`
`,
`
`l.1
`
`Petitioner - Owens Corning
`Ex. 1009, p. 2 of 7
`
`(cid:9)
`

`

`1
`1
`
`ROOFING ADHESIVE
`ROOFING ADHESIVE
`
`4,755,545 (cid:9)
`4,755,545
`
`2
`2
`
`wherein Ar is the aromatic carbon portion of the mal
`wherein Ar is the aromatic carbon portion of the mal-
`tene phase and Ap is the % asphaltene. In the present
`tene phase and Ap is the % asphaltene. In the present
`composition, the bituminous component must have an
`composition, the bituminous component must have an
`ACI less than 0.26 or, as expressed in terms of aromatic-
`AC1 less than 0.26 or, as expressed in terms of aromatic
`ity, less than 0.26+0.004 AP. It is also essential that the
`ity, less than 0.26 + 0.004 AP. It is also essential that the
`bituminous component have an asphaltene content less
`bituminous component have an asphaltene content less
`than 20%. Within these critical parameters, preferred
`than 20%. Within these critical parameters, preferred
`bituminous components which satisfy the needs of the
`bituminous components which satisfy the needs of the
`present invention include 100% road paving grade as
`present invention include 100% road paving grade as-
`phalt and blends of this asphalt with a hard resin asphalt
`phalt and blends of this asphalt with a hard resin asphalt
`in a weight ratio of between about 1:2 and about 5:1.
`in a weight ratio of between about 1:2 and about 5:1.
`The road paving asphalt of the present invention
`The road paving asphalt of the present invention
`should meet ASTM D3381-81, Table 2 speci?cations.
`should meet ASTM D3381-81, Table 2 specifications.
`These bitumens have a penetration at 77° F. between
`These bitumens have a penetration at 77° F. between
`about 40 and 80 dmm (decimillimeters)* and a softening
`about 40 and 80 dmm (decimillimeters)* and a softening
`point of between about 110° F. and about 130° F." The
`point of between about 110° F. and about 130° F.** The
`viscosity of these materials falls within the range of
`viscosity of these materials falls within the range of
`1,000 and 5,000 poise, preferably 1,300 to 2,500
`1,000 and 5,000 poise, preferably 1,300 to 2,500
`poise.*** Of these paving asphalts, those which have a
`poise.*** Of these paving asphalts, those which have a
`penetration at 77° F. of between about 50 and about 70
`penetration at 77° F. of between about 50 and about 70
`are most preferred.
`are most referred.
`'asperAS MD5-83
`* as per ASTM D 5-83
`** as per ASTM D 36-84
`“ as per ASTM D 36-84
`*** as per ASTM D 2171
`'" as per ASTM D 2171
`The hard resin asphalt of the bituminous component,
`The hard resin asphalt of the bituminous component,
`when employed in the blend, can be described as a
`when employed in the blend, can be described as a
`propane cut bitumen whose properties include penetra
`propane cut bitumen whose properties include penetra-
`tion at 130° F. (50 g. in 5 seconds) of 30 to 60; a soften-
`tion at 130° F. (50 g. in 5 seconds) of 30 to 60; a soften
`ing point of between about 165° F. and about 195° F.,
`ing point of between about 165° F. and about 195° F.,
`preferably between about 175° F. and about 190° F., and
`preferably between about 175° F. and about 190° F., and
`an asphaltene content less than 30%.
`an asphaltene content less than 30%.
`The aromaticity of the bituminous component (a) is
`The aromaticity of the bituminous component (a) is
`critical for the reason that, at higher aromatic content,
`critical for the reason that, at higher aromatic content,
`the UV resistance of the adhesive falls below acceptable
`the UV resistance of the adhesive falls below acceptable
`limits and the adhesive exhibits poor sealability as is
`limits and the adhesive exhibits poor scalability as is
`established by following data.
`established by following data.
`A third critical factor in obtaining the improved
`A third critical factor in obtaining the improved
`blends of the present invention involves the use of a
`blends of the present invention involves the use of a
`thermoplastic block polymer in an amount not exceed-
`thermoplastic block polymer in an amount not exceed
`ing 6% of the total composition. When more than 6% of
`ing 6% of the total composition. When more than 6% of
`the rubber component (b) is employed, poor adhesion to
`the rubber component (b) is employed, poor adhesion to
`the substrate surfaces results and lowered wind resis-
`the substrate surfaces results and lowered wind resis
`tance, e.g. 30 miles per hour, causes many failures.
`tance, e.g. 30 miles per hour, causes many failures.
`These disadvantages are evidenced irrespective of the
`These disadvantages are evidenced irrespective of the
`proportions of diblock and triblock copolymer formu
`proportions of diblock and triblock copolymer formu-
`lated. Generally, component (b) employs between
`lated. Generally, component (b) employs between
`100% and about 10% by weight of the triblock styrene
`100% and about 10% by weight of the triblock styrene-
`butadiene-styrene copolymer having a Brook?eld vis
`butadiene-styrene copolymer having a Brookfield vis-
`cosity (25 wt. % toluene solution) at 77° F. between
`cosity (25 wt. % toluene solution) at 77° F. between
`about 1,000 and about 50,000 cps and between 0% and
`about 1,000 and about 50,000 cps and between 0% and
`about 90% by weight of the diblock styrene-butadiene
`about 90% by weight of the diblock styrene-butadiene
`copolymer, having a Brook?eld viscosity (25 wt. %
`copolymer, having a Brookfield viscosity (25 wt. %
`toluene solution) at 77° F. between about 500 and about
`toluene solution) at 77° F. between about 500 and about
`5,000 cps.
`5,000 cps.
`It is important to avoid substitution of monomers
`It is important to avoid substitution of monomers
`other than styrene and butadiene in the copolymer since
`other than styrene and butadiene in the copolymer since
`the introduction of other polymeric components such as
`the introduction of other polymeric components such as
`polyisoprene and polyethylene or ethylene-vinyl ace
`polyisoprene and polyethylene or ethylene-vinyl ace-
`tate copolymers either do not give adequate scalability
`tate copolymers either do not give adequate sealability
`at temperatures less than 70° F. or diminish the resis-
`at temperatures less than 70‘I F. or diminish the resis
`tance to ?ow of the composition after application and
`tance to flow of the composition after application and
`lower resiliency and squash resistance when applied to
`lower resiliency and squash resistance when applied to
`roofing materials which are packed in bundles or other-
`roo?ng materials which are packed in bundles or other
`wise assembled for shipment. Additionally, some of
`wise assembled for shipment. Additionally, some of
`these copolymers add tack to the overall composition
`these copolymers add tack to the overall composition
`and are thus associated with rider granule problems in
`and are thus associated with rider granule problems in
`which loose granules adhere to the soft tacky surface of
`which loose granules adhere to the soft tacky surface of
`
`10
`10
`
`In one aspect this invention relates to a novel blend of
`In one aspect this invention relates to a novel blend of
`bituminous and synthetic rubber components to pro
`bituminous and synthetic rubber components to pro- 5
`5
`duce a low temperature sealing adhesive.
`duce a low temperature sealing adhesive.
`In another aspect the invention relates to the process
`In another aspect the invention relates to the process
`for self-sealing roo?ng shingles or roo?ng strips having
`for self-sealing roofing shingles or roofing strips having
`the above blend disposed in discrete areas on a surface
`the above blend disposed in discrete areas on a surface
`of said shingle or strip.
`of said shingle or strip. (cid:9)
`Many blends of bituminous material have been pro
`Many blends of bituminous material have been pro-
`posed which meet certain speci?cations but which are
`posed which meet certain specifications but which are
`lacking in others, particularly speci?cations for roo?ng
`lacking in others, particularly specifications for roofing
`adhesives. Among the requirements for a self-sealing
`adhesives. Among the requirements for a self-sealing
`adhesive are resistance to crush when the shingles are 15
`adhesive are resistance to crush when the shingles are
`packed in stacks for shipment, a relatively low melting
`packed in stacks for shipment, a relatively low melting
`temperature to permit self-sealing without the applica
`temperature to permit self-sealing without the applica-
`tion of heating equipment and a strong bond between
`tion of heating equipment and a strong bond between
`the joined surfaces which has high wind resistance and
`the joined surfaces which has high wind resistance and
`good low temperature stability. Other important con
`good low temperature stability. Other important con- 20
`siderations include good resistance to photo-oxidation;
`siderations include good resistance to photo-oxidation;
`in particular, the ability to retain adhesive properties
`in particular, the ability to retain adhesive properties
`after exposure of the adhesive to sunlight for more than
`after exposure of the adhesive to sunlight for more than
`2 hours. While certain of these characteristics are found
`2 hours. While certain of these characteristics are found
`in conventional blends, a combination of all of the 25
`in conventional blends, a combination of all of the
`above mentioned properties has not been attained.
`above mentioned properties has not been attained.
`For example, U.S. Pat. No. 3,978,014 describes blends
`For example, U.S. Pat. No. 3,978,014 describes blends
`having high aromaticity and at least 8% rubber content.
`having high aromaticity and at least 8% rubber content.
`While these blends exhibit good thermal stability, their
`While these blends exhibit good thermal stability, their
`30
`self-sealing properties are relatively poor. Also, because
`self-sealing properties are relatively poor. Also, because 30
`of their high aromaticity, these blends are readily de
`of their high aromaticity, these blends are readily de-
`graded by exposure to UV light during roof installation.
`graded by exposure to UV light during roof installation.
`US. Pat. No. 4,559,267 also discloses roo?ng adhesive
`U.S. Pat. No. 4,559,267 also discloses roofing adhesive
`blends. However, these include substantial amounts of
`blends. However, these include substantial amounts of
`35
`bitumen roofers flux in their composition which pro- 35
`bitumen roofers ?ux in their composition which pro
`duces a tacky sealant leading to rider granule problems
`duces a tacky sealant leading to rider granule problems
`and packaging dif?culties as exempli?ed by low squash
`and packaging difficulties as exemplified by low squash
`resistance and premature adhesion of shingles when
`resistance and premature adhesion of shingles when
`shipped in bundles and during installation.
`shipped in bundles and during installation.
`40
`Accordingly, it is an object of this invention to pro- 40
`Accordingly, it is an object of this invention to pro
`vide a self-sealing adhesive having, in combination, the
`vide a self-sealing adhesive having, in combination, the
`above desired properties.
`above desired properties.
`Another object of this invention is to provide a com-
`Another object of this invention is to provide a com
`mercially feasible and economical process for the use of
`mercially feasible and economical process for the use of
`such self-sealing compositions.
`45
`such self-sealing compositions. (cid:9)
`45
`Still another object is to provide a low temperature
`Still another object is to provide a low temperature
`sealant which has high wind resistance.
`sealant which has high wind resistance.
`These and other objects of the invention will become
`These and other objects of the invention will become
`apparent from the following description and disclosure.
`apparent from the following description and disclosure.
`According to this invention there is provided a low
`According to this invention there is provided a low 50
`temperature self-sealing adhesive blend which com-
`temperature self-sealing adhesive blend which com
`prises:
`prises:
`(a) 50—95% by weight of a bituminous component
`(a) 50-95% by weight of a bituminous component
`comprising a road paving grade asphalt or a blend
`comprising a road paving grade asphalt or a blend
`of road paving grade asphalt and a hard resin as- 55
`of road paving grade asphalt and a hard resin as
`phalt in a weight ratio of between about 1:10 and
`phalt in a weight ratio of between about 1:10 and
`about 10:1; said bituminous component having an
`about 10:1; said bituminous component having an
`asphalt component index (AC1) less than 0.26 and
`asphalt component index (ACI) less than 0.26 and
`an asphaltene content less than 20%;
`an asphaltene content less than 20%;
`(b) 1-6% by weight of a thermoplastic styrene/
`(b) 1-6% by weight of a thermoplastic styrene/- 60
`butadiene block copolymer wherein the weight
`butadiene block copolymer wherein the weight
`ratio of styrene to butadiene is between about 1:1
`ratio of styrene to butadiene is between about 1:1
`and about 1:10 and
`and about 1:10 and
`(c) 4-40% by weight of an inert ?ller.
`(c) 4-40% by weight of an inert filler.
`65
`The ACI of the bituminous component is expressed
`The ACI of the bituminous component is expressed 65
`by the equation
`by the equation
`
`ACI=Ar-0.004 AP
`ACI=Ar-0.004 AP
`
`Petitioner - Owens Corning
`Ex. 1009, p. 3 of 7
`
`(cid:9)
`

`

`.
`
`30 (cid:9)
`
`5 (cid:9)
`
`25 (cid:9)
`25
`
`4,755,545
`4,755,545
`4
`4
`3
`3
`quate to achieve a uniform composition. Even lower
`quate to achieve a uniform composition. Even lower
`the adhesive composition and mask or diminish adhe-
`the adhesive composition and mask or diminish adhe
`mixing time, e.g. 0.5 hour, and low temperatures, e.g. up
`mixing time, e.g. 0.5 hour, and low temperatures, e.g. up
`sive properties by reducing the adhesive surface area.
`sive properties by reducing the adhesive surface area.
`to 250° F., can be employed when high shear mixers are
`The present blend which is signi?cantly harder, retains
`to 250° F., can be employed when high shear mixers are
`The present blend which is significantly harder, retains
`employed.
`employed.
`fewer granules on its adhesive surface and thus achieves
`fewer granules on its adhesive surface and thus achieves
`The present blends are applied to a roofing element
`The present blends are applied to a roo?ng element
`stronger adhesion per surface area.
`stronger adhesion per surface area.
`such as a shingle or roofing sheet in the form of an
`The filler employed in the above blend can be any of
`such as a shingle or roo?ng sheet in the form of an
`The ?ller employed in the above blend can be any of
`adhesive strip or bead or in a pattern of beads or other
`those conventionally used. These include stone dust,
`those conventionally used. These include stone dust,
`adhesive strip or bead or in a pattern of beads or other
`configuration along an area which is to be contacted
`limestone, ground glass fibers to add strength, wollas-
`limestone, ground glass ?bers to add strength, wollas
`con?guration along an area which is to be contacted
`with a second roofing element, e.g. on the under surface
`tonite, sand, talc, mica, vermiculite, carbon black and
`with a second roo?ng element, e. g. on the under surface
`tonite, sand, talc, mica, vermiculite, carbon black and
`10 or over surface of the roofing material where overlap or
`or over surface of the roo?ng material where overlap or
`titanium dioxide which possess antioxidant and UV
`titanium dioxide which possess antioxidant and UV
`underlap of succeeding shingles or strips occur. The
`underlap of succeeding shingles or strips occur. The
`resistance properties as well as adding strength to the
`' resistance properties as well as adding strength to the
`same application can be effected to seal siding shingles
`same application can be effected to seal siding shingles
`blended material.
`blended material.
`or sheets. More speci?cally, the shingle material is
`Although not required, the present composition may
`or sheets. More specifically, the shingle material is
`Although not required, the present composition may
`passed over or under an applicator containing the pres-
`passed over or under an applicator containing the pres
`also contain a small amount of antioxidant, such as a
`also contain a small amount of antioxidant, such as a
`stearically hindered phenolic compound having a lin
`15 ent blend at a temperature of from about 250° F. to
`stearically hindered phenolic compound having a lin-
`ent blend at a temperature of from about 250° F. to
`about 400° F.
`about 400° F.
`ear, branched or radial molecular structure. When used,
`ear, branched or radial molecular structure. When used,
`The applicator can be a set of print wheels or an
`these compounds are required to have a high decompo
`these compounds are required to have a high decompo-
`The applicator can be a set of print wheels or an
`extruder capable of applying adhesive in beads of con
`extruder capable of applying adhesive in beads of con-
`sition temperature, e.g. greater than 400° F., to with
`sition temperature, e.g. greater than 400° F., to with-
`stand mixing temperatures employed in the preparation
`sistent size or as a continuous ribbon on a surface of the
`stand mixing temperatures employed in the preparation
`sistent size or as a continuous ribbon on a surface of the
`20 material to be joined and sealed to another member.
`material to be joined and sealed to another member.
`of the blend. Preferred antioxidants which may be in-
`of the blend. Preferred antioxidants which may be in
`After affixing the adhesive in the desired area or areas,
`corporated are those having a decomposition tempera
`corporated are those having a decomposition tempera-
`After af?xing the adhesive in the desired area or areas,
`the adhesive is quenched with water, air cooled or
`the adhesive is quenched with water, air cooled or
`ture and volatile loss temperature greater than 400° F.
`ture and volatile loss temperature greater than 400° F.
`Typical species include IRGANOX 1010 supplied by
`cooled by contact with any other suitable quenching
`cooled by contact with any other suitable quenching
`Typical species include IRGANOX 1010 supplied by
`Ciba-Geigy, i.e. tetrakis [methylene(3,5-di-tert-butyl-4
`media, e.g. a dilute ethylene glycol aqueous solution.
`media, e.g. a dilute ethylene glycol aqueous solution.
`Ciba-Geigy, i.e. tetrakis [methylene(3,5-di-tert-butyl-4-
`Generally the material on which adhesive is applied is
`Generally the material on which adhesive is applied is
`hydroxyhydrocinnamate)] methane which has a radial
`hydroxyhydrocinnamate)] methane which has a radial
`cut to size after application, however, it is also within
`cut to size after application, however, it is also within
`structure and an empirical formula of C72H108012, the
`structure and an empirical formula of CHI-1108012, the
`the scope of this invention to precut shingles or sheets
`the scope of this invention to precut shingles or sheets
`antioxidants covered in U.S. Pat. Nos. 3,285,855 and
`antioxidants covered in US. Pat. Nos. 3,285,855 and
`which may be subsequently presented to the applicator
`which may be subsequently presented to the applicator
`3,644,482, AGERITE GT (an isocyanurate based hin
`3,644,482, AGERITE GT (an isocyanurate based hin-
`for adhesive application.
`dered phenol supplied by R. T. Vanderbilt), and the
`for adhesive application.
`dered phenol supplied by R. T. Vanderbilt), and the
`A preferred embodiment of the process of manufac
`A preferred embodiment of the process of manufac-
`like. When included in the formulation, e.g. in cases
`like. When included in the formulation, e.g. in cases
`turing the self-seal adhesive of this invention and apply
`turing the self-seal adhesive of this invention and apply-
`where a small amount of filler, e.g., less than 10%, is
`where a small amount of ?ller, e.g., less than 10%, is
`ing same to a roo?ng shingle is illustrated by FIG. 1.
`ing same to a roofing shingle is illustrated by FIG. 1.
`used, the antioxidants may comprise between about 0.05
`. used, the antioxidants may comprise between about 0.05
`FIG. 1 is a flow diagram describing a particular ar-
`FIG. 1 is a flow diagram describing a particular ar
`and about 5% by weight, preferably not more than
`‘ and about 5% by weight, preferably not more than
`rangement of processing vessels employed in the manu
`rangement of processing vessels employed in the manu-
`about 3% by weight of the total composition.
`" about 3% by weight of the total composition.
`facture of the present adhesive. In the drawing, vessel 1
`35 facture of the present adhesive. In the drawing, vessel 1
`The blends of the present invention are prepared by
`The blends of the present invention are prepared by
`35
`is a pre-mix concentrate tank equipped with a mechani-
`several convenient and economical methods. In general,
`several convenient and economical methods. In general,
`is a pre-mix concentrate tank equipped with a mechani
`cal stirrer for premixing and dissolving a block styrene-
`cal stirrer for premixing and dissolving a block styrene
`the block polymer of rubber component (b), in the form
`the block polymer of rubber component (b), in the form
`butadiene copolymer powder, introduced through line
`butadiene copolymer powder, introduced through line
`of a powder or chunks is added to the liquid road pav-
`of a powder or chunks is added to the liquid road pav
`2 from reservoir 7, into road paving grade asphalt
`ing asphalt which swells and softens the rubber particles
`2 from reservoir 7, into road paving grade asphalt
`ing asphalt which swells and softens the rubber particles
`40 which is introduced into vessel 1 from valved line 3.
`to their flow point. Intimate mixture of the composition,
`to their ?ow point. Intimate mixture of the composition,
`which is introduced into vessel 1 from valved line 3.
`Tank 1 is maintained at about 350° F. and is continu-
`including filler, provides a uniformly viscous material
`Tank 1 is maintained at about 350° F. and is continu
`-' including ?ller, provides a uniformly viscous material
`ously agitated by mechanically driven stirrer 4 to pro
`ously agitated by mechanically driven stirrer 4 to pro-
`suitable as an adhesive. These products seal at low tem-
`suitable as an adhesive. These products seal at low tem
`vide a uniform mixture containing the total amount of
`perature to provide a strong bond between units of a
`vide a uniform mixture containing the total amount of
`perature to provide a strong bond between units of a
`road paving grade asphalt and block polymer to be used
`road paving grade asphalt and block polymer to be used
`roo?ng or siding material which resist failure at high
`roofing or siding material which resist failure at high
`45 in the composition. The uniformly mixed concentrate is
`in the composition. The uniformly mixed concentrate is
`wind velocities. More specifically, according to one
`wind velocities. More speci?cally, according to one
`45
`then withdrawn from tank 1 and introduced into me-
`method.of preparation, the components of (a) are mixed
`method,of preparation, the components of (a) are mixed
`then withdrawn from tank 1 and introduced into me
`chanically stirred formulating tank 6 through valve line
`chanically stirred formulating tank 6 through valve line
`for a period of from 0.1 to 5 hours at a temperature of
`for a period of from 0.1 to 5 hours at a temperature of
`5. Tank 6 may contain a plurality of mixing blades to
`between about 300° F. and about 450° F. until a uniform
`5. Tank 6 may contain a plurality of mixing blades to
`between about 300° F. and about 450° F. until a uniform
`provide more rapid and intimate mixing of the contents.
`provide more rapid and intimate mixing of the contents.
`distribution of the asphalts is obtained. Component (b) is
`distribution of the asphalts is obtained. Component (b) is
`50 In cases where hard resin asphalt is included in the
`then added and mixed at about the same temperature for
`In cases where hard resin asphalt is included in the
`then added and mixed at about the same temperature for
`composition, said material is fed to tank 6 from hard
`about the same period. Finally filler is added and thor-
`composition, said material is fed to tank 6 from hard
`about the same period. Finally ?ller is added and thor
`asphalt reservoir 8 through valved line 10. The amount
`asphalt reservoir 8 through valved line 10. The amount
`oughly mixed therein at a temperature within the same
`oughly mixed therein at a temperature within the same
`of hard resin asphalt can be adapted to satisfy varied
`of hard resin asphalt can be adapted to satisfy varied
`range.
`range.
`composition requirements by regulating flow through
`composition requirements by regulating flow through
`An alternative to the above process entails mixing the
`An alternative to the above process entails mixing the
`paving grade asphalt of component (a), and component
`55 valve 12 on line 10 in response to the amount of hard
`paving grade asphalt of component (a), and component
`valve 12 on line 10 in response to the amount of hard
`resin desired for a particular composition. Filler mate-
`(b) at a suitable temperature between about 250° F. and
`resin desired for a particular composition. Filler mate
`(b) at a suitable temperature between about 250° F. and
`rial from ?ller hopper 14 is ?nally introduced into the
`450° F., preferably between about 300° and 400° F. for
`rial from filler hopper 14 is finally introduced into the
`450° F., preferably between about 300° and 400° F. for
`upper portion of tank 6 from metering valved line 16. In
`upper portion of tank 6 from metering valved line 16. In
`a period of from about 0.25 to about 10 hours until a
`a period of from about 0.25 to about 10 hours until a
`tank 6, the entire composition is intimately and uni-
`uniform mixture is formed and then adding the hard
`uniform mixture is formed and then adding the hard
`‘ tank 6, the entire composition is intimately and uni
`resin asphalt and filler with thorough mixing at a tem-
`60 formly mixed at a temperature of about 350° F. and the
`resin asphalt and ?ller with thorough mixing at a tem
`formly mixed at a temperature of about 350° F. and the
`60
`desired composition is drawn off through line 18 from
`desired composition is drawn off through line 18 from
`perature within the above range.
`perature within the above range.
`which at least a portion is passed to applicator device
`The later method can employ somewhat lower tem-
`which at least a portion is passed to applicator device
`The later method can employ somewhat lower tem
`peratures in the initial mixing step since the hard resin
`peratures in the initial mixing step since the hard resin
`20. Applicator 20 is described as an adhesive supply
`20. Applicator 20 is described as an adhesive supply
`asphalt, in which the rubber is insoluble, is not present.
`tank 30 equipped with a longitudinally disposed motor
`tank 30 equipped with a longitudinally disposed motor
`asphalt, in which the rubber is insoluble, is not present.
`Most preferred mixing temperatures for the preparation
`Most preferred mixing temperatures for the preparation
`65 driven adhesive mixing rod 32 employed to maintain a
`driven adhesive mixing rod 32 employed to maintain a
`65
`homogeneous mixture. A plurality of revolving sprock
`of the present blends, however, fall within the range of
`homogeneous mixture. A plurality of revolving sprock-
`of the present blends, however, fall within the range of
`from about 325° F. and about 375° F. and usually a
`eted print wheels 34 are partially submerged below the
`eted print wheels 34 are partially submerged below the
`from about 325° F. and about 375° F. and usually a
`mixing time of from about 0.75 to about 3 hours is ade-
`level of liquid adhesive supplied to tank 30 from valved
`level of liquid adhesive supplied to tank 30 from valved
`mixing time of from about 0.75 to about 3 hours is ade
`
`Petitioner - Owens Corning
`Ex. 1009, p. 4 of 7
`
`

`

`4,755,545
`4,755,545
`6
`5
`6
`5
`A portion of the above composition (sample a) was
`A portion of the above composition (sample a) was
`line 26. As shown, the tank is situated beneath the under
`line 26. As shown, the ta