United States Patent [191
`Bartolo et al.
`
`lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
`US005202048A
`5,202,048
`[11] Patent Number:
`[45] Date of Patent: Apr. 13, 1993
`
`[54] PERSONAL CLEANSING PRODUCI' WITH
`ODOR COMPATIBLE BULKY AMINE
`CATIONIC POLYMER WITH REDUCED
`ODOR CHARACI'ERISTICS
`Inventors: Robert G. Bartolo, Cincinnati; Louis
`F. Wong, Mason, both of Ohio
`[73] Assignee: The Procter&: Gamble Company,
`Cincinnati, Ohio
`
`(75]
`
`[21] Appl. No.: 816,523
`[22] Filed:
`Dec. 30, 1991
`
`[51]
`
`Related U.S. Application Data
`[63] Continuation of Ser. No. 374,315, Jun. 30, 1989, aban(cid:173)
`doned.
`Int. CJ.s ......................... A61K 7/50; CllD 3/37;
`C11D 3/46; CUD 13/18.
`[52] U.S. CI ..................................... 252/117; 252/121;
`252/132; 252/134; 252/174; 252/174~ 15;
`252/174.17; 252/174.23; 252/544; 252/547;
`252/DIG. 2; 252/DIG. 5; 252/DIG. 14;
`252/DIG. 16; 424/70; 424/78.03
`[58] Field of Search ............... 252/117, 132, 547, 544,
`252/174.23, 174.15, 174.17, DIG. 2, DIG. 5,
`DIG. 14; 424/70, 78
`
`[56]
`
`References Cited
`U.S. PATENT DOCUMENTS
`2,876,217 3/1959 Paschall ........................... 260/233.3
`3,589,978 6/1971 Kamal et al ......................... 162/158
`4,061,602 12/1977 Oberstar et al ..................... 252/547
`4,298,494 11/1981 Parslow et al ................. 252/174.16
`4,454,060 6/1984 Lai et al .............................. 252/547
`4,477,375 10/1984 Grollier ............................... 252/542
`
`4,540,507 9/1985 Grollier .......................... 252/174.23
`4,663,159 5/1987 Brode, II et al ...................... 424/70
`4,678,606 7/1987 Akhter et al ........................ 252/542
`4,704,224 11/1987 Saud .................................... 252/132
`4,710,314 12/1987 Madrange et al ................... 252/117
`4,714,563 12/1987 Kajs et al ............................ 252/107
`4,758,282 7/1988 Stober et al ........................... 127/34
`4,764,365 8/1988 Boothe et al ......................... 424/81
`4,820,447 4/1989 Medcalf et al ...................... 252/117
`4,832,872 5/1989 Scandel ............................... 252/547
`4,874,538 10/1989 Dawson et al ...................... 252/117
`
`FOREIGN PATENT DOCUMENTS
`1136842 12/1968 United Kingdom .
`
`Primary Examiner-Dennis Albrecht
`Attorney, Agent, or Firm-Betty J. Zea; Leonard
`Williamson; Robert B. Aylor
`
`[57]
`ABSTRACI'
`Persou'al. cleansing ~omposltio~ contunmg sulfactant
`and selected cationic polymer provide products having
`improved odor stability. This "bulky amine" cationic
`is:
`polymer
`Guar
`(POLYMER)(cid:173)
`CRIHCR2R3-CH2NR4RSR6 wherein Rl-R3 is a -H
`or -OH substituent, and wherein at least one ofR4, RS
`and R6 are selected from the group consisting of alkyl
`having a chain length of from about 2 to about 24 car(cid:173)
`bon atoms, and alkoxy alkyl containing from about 2 to
`about 12 carbon atoms, and mixtures thereof. The cati(cid:173)
`onic polymer is less odoriferous than trimethylamine(cid:173)
`based cationic polymers. The personal cleansing com(cid:173)
`position ash a pH of at least 7.5 in a 1% aqueous solu(cid:173)
`tion.
`
`8 Claims, No Drawings
`
`1
`
`

`
`1
`
`5,202,048
`
`2
`All of the above patents are hereby incorporated
`herein by reference, especially their for basic personal
`cleansing product and quat polymer disclosures.
`
`PERSONAL CLEANSING PRODUCI' WITH ODOR
`COMPATIBLE BULKY AMINE CATIONIC
`POLYMER WITH REDUCED ODOR
`CHARACI'ERISTICS
`
`This is a continuation of application Ser. No.
`07/374,315, filed on Jun. 30, 1989, now abandoned.
`
`FIELD OF THE INVENTION
`This invention pertains to personal cleansing compo(cid:173)
`sitions for personal washing, which compositions com(cid:173)
`prise quaternary amine polymers.
`
`BACKGROUND OF THE INVENTION
`
`5
`
`SUMMARY OF THE INVENTION
`The present invention relates to a personal cleansing
`product made with a selected quaternized cationic poly(cid:173)
`mer wherein each quaternary ammonium moiety is
`derived from a bulky amine. The preferred product is a
`10 toilet bar.
`·
`OBJECTS OF THE INVENTION
`An object of the present invention is to provide an
`improved toilet bar, preferably a soap bar, comprising a
`15 cationic polymeric skin conditioning agent which does
`not comprise a potential odoriferous amine moiety.
`Other objects will become apparent from the detailed
`description below.
`DETAILED DESCRIPTION OF THE
`INVENTION
`
`Liquid and solid bar compositions based on soap
`and/or synthetic surfactants are commonly used for
`cleansing the human body. A wide variety of additives
`have been suggested for inclusion in said compositions. 20
`Some enhance the physical properties, e.g., bar hard-
`ness, wear rate, resistance to water. Others enhance the
`in-use properties such as lather characteristics and some
`The present invention . comp~ basic personal
`cleansing compositions comprising from about 0.2% to
`impact on the ilirprcision the comp<)sition has on the
`25 about 5% by weight selected cationic polymer wherein
`skin both during washing (bar feel) and afterwards.
`each cationic group is derived from: a "bulky" amine.
`It has been discovered that the addition of certain
`Compared to personal cleansing compositions which
`polymeric materials to such liquids and bars can have a
`beneficial skin mildness effect for the use~ without dele-
`are prepared with cationic polymers which comprise a
`teriously affecting other product properties: In g~ner~,
`potential labile amine moiety, e.g., trimethylamine-
`the useful polymers should be soluble or diSpersible m 30 based cationic polymers, the compositions of this inven-
`water to a level of at least 1% ?Y weight, preferabl~ at
`tion consistently exhibit superior odor stability due to
`least 5% by weight at 25" C. Swtable polymers are high
`the selected "bulky amine" cationic polymers. The term
`molecular wei¥ht mate~als (mass-ave~age molec~ar
`"basic personal cleansing compositions" as used herein
`weight determmed, for Instance, by light scattermg,
`means that the composition has a pH of at least about
`being generally from about 20,000 to about 5,000,000, 35 7.5, preferably at least about 8.5.
`preferably from about 50,000 to about 4,000,000, and
`While not being bound to any theory, illustrations A
`more preferably from a~ut 5?<J,OOO. t~ about 3,000,000)
`and B show the theoretical degradation of labile amine
`~d pr~ferably have a thick~nmg ability su~h that a I%
`containing cationic polymers in a basic environment.
`dispersion of the polymer m water at 20 C. exceeds
`Generic degradation:
`about 1 PaS(lO poise) at a shear rate of 10-2 sec-I 40
`Useful polymers are the cationic, nonionic, amphoteric,
`and anionic polymers useful in the cosmetic field. Pre(cid:173)
`ferred are cationic and nonionic resins and mixtures
`where R can be meant to represent any group (e.g., H,
`thereof. Highly preferred are the cationic resins.
`To date the preferred cationic polymers include cati- 45 OH, alkyl chain); e.g.,
`onic guar gums such as hydroxyproxyltrimethylam(cid:173)
`monium guar gum.
`However, it has been discovered that there is an odor
`problem with using such "cationic trimethylamine
`quaternized polymers" in compositions having a pH of 50
`7.5 or above. They break down and release odoriferous
`labile amines.
`Odoriferous labile amines are detectable at levels as
`low as 2 ppb. Personal cleansing products containing
`odoriferous quaternary amine polymers are disclosed in 55
`one or more of the following patents:
`
`Polymer-CHR-CH2-N+(CH3h·
`-polymer-CR=CH2+N(CH3)3
`
`Guar-CH2-0-CH2-C-H(OH)-CH-
`2-N+(CH3)3-Guar-CH2-0-CH2
`C(OH)=CH2 +N(CHJh
`
`(A)
`
`(B)
`
`The extent of this degradation and the effect of it on
`product odor were not appreciated heretofore. The
`level of hydration required to cause a problem is very
`low and therefore it is extremely difficult to detect and
`identify the offending material.
`
`60
`
`The Bulky Amine Cationic Polymers
`Bulky amine polymers are defmed herein as POLY(cid:173)
`MERS with the following non-labile cationic functional
`group:
`(POLYMER)-CRIH-CR2R3-NR4RSR6
`(I)
`wherein R'-R3is H or any other substituent and R4, RS
`and R 6 combine with N to form a pendant amine which
`when free has less odor impact than trimethylamine,
`65 preferably at least one of R4, RS and R6 is alkyl having
`a chain length of from about 2 to about 24 carbon atoms,
`or an alkoxy alkyl group containing from about 2 to
`about 12 carbon atoms.
`
`_ _.:~.:.:.::; ___ __::::::-----::..;.;;.;;.~~--
`
`2
`
`

`
`3
`Some examples of preferred bulky amine polymers
`are cationic guar gums having the following structures;
`
`5,202,048
`
`4
`The boiling points of some exemplary substituted
`amines are set out in Table 1.
`TABLE 1
`
`C12H2s
`I
`Guar-CH2-0-CH2-CH(OH)-CH2-N+CH3
`I
`CH3
`
`(II) 5
`
`Eliminated Amine
`
`Boiling Point/'C.
`
`3
`
`Labile Amine
`Trimethylamine
`Bulky Amine
`36
`Dimethylethylamine
`63
`Methyldiethylamine
`89
`Triethylamine
`19S
`Dimethyloctylamine
`ISS
`Dimethylcyclohexylamine
`183
`Dimethylbenzylamine
`133
`Dimethylethanolamine
`An example of a bulky amine hydroxyethyl cellulose 15 __ Dieth_· _.;..yl_ethan __ o_lamn_e ________ ,_61 ____ _
`(HEC) polymer is:
`
`CH2CH~H (Ill) 10
`I
`Guar-CH2-0-CH2-CH(OH)-CH2-N+CH3
`I
`CH3
`
`(IV)
`
`Ct2H2s
`I
`HEC-CH2-0-CH2-CH(OH)-CH2-N+CH3
`I
`CH3
`
`For a homologous series of compounds (e.g., tri-sub(cid:173)
`stituted amines), volatility decreases with increasing
`molecular weight. Volatility is dependent, among other
`20 things on the boiling point of the neat component. Odor
`impact also has a strong dependence on the amount of
`volatilized material that reaches the nose. Table 1 dem(cid:173)
`These "bulky amine': groups add additional complex(cid:173)
`onstrates the significant effect which .adding "bulky".
`ity to the preparation of the polymer and the finished
`groups has on volatility and, hence, odor impact of
`compositions. They would not be used, except for the 25
`amines. For pure hydrocarbon substitution, the larger
`existence of the odor problem with the trimethylamine
`the alkyl chains (or the larger than degree oflong chain
`derived polymer. They may also have improved skin
`substitution) the lower the odor impact. Thus, bulky
`conditioning benefits.
`amines have boiling points of greater than ambient tem(cid:173)
`The composition of this invention preferably com(cid:173)
`perature, and preferably at least about 30" C., more
`preferably more than about so· c.
`prises from about 0.2% to about 5%, preferably from 30
`about 0.5% to about 2%, of the cationic polymer. The
`The Surfactant Component
`average molecular weight of the preferred cationic guar
`gum is from about 50,000 to about 1,000,000, preferably
`The surfactant component of the present composi-
`from about 100,000 to about SOO,OOO, and more prefera-
`tions comprises alkali metal soap or synthetic surfactant
`bly from about 250,000 to about 400,000 and the degree 35 or mixtures thereof.
`Alkali metal soaps can be made by direct saponifica-
`of substitution is from about 0.5 to about 4, preferably
`from about 1 to about 2.5. Some preferred cationic
`tion of the fats and oils or by the neutralization of the
`guars (galactomannans) are disclosed in U.S. Pat. No.
`free fatty acids which are prepared in a separate manu-
`4,758,282, Stober et al., issued Jul. 19, 1988, incorpo-
`facturing process. Particularly useful are the sodium
`rated herein by reference. The cationic guar gum poly- -40 and potassium salts of the mixtures of fatty acids de-
`rived from coconut oil and tallow, i.e., sodium and
`mers disclosed in commonly assigned U.S. patent appli-
`cation Ser. No. 07/266,039, J. R. Knochel and P. E.
`.
`tall
`d
`Vest, filed Nov. 2, 1988, would be suitable when the
`potassium
`ow an coconut soaps.
`cationic groups are substituted with bulky amine
`The term "tallow" is used herein in connection with
`groups.
`45 fatty acid mixtures which typically have an approxi-
`mate carbon chain length distribution of 2.5% c 149 29%
`Other bulky amine cationic polymeric skin condition-
`C!6, 23% c,s, 2% palmitoleic, 41.5% oleic and 3%
`ing agents useful in the present invention have molecu-
`Jar weights of from 1,000 to 3,000,000. Useful polymers
`linoleic. (The first three fatty acids listed are saturated.)
`Other ~tur~ with similar _distrib~tion, such as the
`are selected from the group consisting of:
`50 fatty &CJds denved from vanous animal tallows. The
`(I) cationic polysaccharides;
`(II) cationic copolymers of saccharides and synthetic
`tallow can also be hardened (i.e., hydrogenated) to
`cationic monomers, and
`convert part or all of the unsaturated fatty acid moieties
`(III) synthetic polymers selected from the group con-
`to saturated fatty acid moieties.
`sisting of any other synthetic polymer containing
`When the terms "coconut oil" and "eoconut fatty
`pendant quaternary amine groups, e.g., quaternized 55 acid" (CNFA) are used herein, they refer to fatty acid
`silicones and quaternized methacrylates.
`mixtures which typically have an approximate carbon
`chain length distribution of about 8% c,, 7% C10, 48%
`Specific examples of members of the bulky amine
`C12, 17% C14, 9% C16o 2% Cu, 7% oleic, and 2% lin-
`cationic polysaccharide class include the cationic hdy-
`oleic. (The first six fatty acids listed are saturated.)
`roxyethyl cellulose, e.g., LM-200 made by Union Car-
`bide Corporation.
`60 Other sources having similar carbon chain length distri-
`bution such as palm kernel oil and babassu kernel oil are
`The cationic copolymers of saccharides and synthetic
`cationic monomers useful in the present invention en-
`included with the terms coconut oil and coconut fatty
`compass those containing the following saccharides:
`acid.
`glucose, galactose, mannose, arabinose, xylose, fucose,
`A preferred soap bar of this invention comprises soap
`fructose, glucosamine, galactosamine, glucuronic acid, 65 as its primary or sole surfactant It also contains as an
`galacturonic acid, and 5 or 6 membered ring polyalco-
`essential ingredient a skin conditioning amount of a
`bois. Also included are hydroxymethyl, hydroxyethyl
`hydrated, cationic guar gum provided by a cationic
`guar gum polymer. This polymer is uniformly distrib-
`and hydroxypropyl derivatives of the above sugars.
`
`3
`
`

`
`5,202,048
`
`5
`uted in the soap bar matrix without affecting the smooth
`feel of the dry or wet bar.
`Another preferred toilet bar is based on mild syn(cid:173)
`thetic surfactants as disclosed in commonly assigned
`U.S. Pat. No. 4,673,525, Small et al., issued Jun. 16, s
`1987, incorporated herein by reference.
`Synthetic detergents can also be present in composi(cid:173)
`tions herein. Preferred types of synthetic detergents are
`of the anionic or nonionic type. Examples of anionic
`synthetic detergents are the salts of organic sulfuric
`reaction products such as
`alkyl sulfates having the formula R240S03M;
`alkyl sulfonates having the formula R24S03M;
`alkyl ether sulfates having the formula R24(0C2l4)x.
`OS03M;
`alkyl mono glyceride sulfonates having the formula
`
`15
`
`6
`antibacterial agents can be included in the present com(cid:173)
`positions at levels of from about 0.5% to about 4%.
`Typical antibacterial agents which are suitable for use
`herein are 3,4-di and 3,4',5-tribromosalicyla-anildes;
`4,4' -dichloro-3-(trifluoromethyl)carbanilide; 3,4,4' -tri(cid:173)
`chlorocarbanilide and mixtures of these materials. Con(cid:173)
`ventional nonionic emoliients can be included as addi(cid:173)
`tional skin conditioning agents in the compositions of
`the present invention at levels up to about 40%, prefera-
`10 bly at levels of from about 1% to about 25%. Such
`materials include, for example, mineral oils, paraffm
`wax having a melting point of from about 100" F., fatty
`sorbitan esters (see U.S. Pat. No. 3,988,255, Seiden,
`issued Oct. 26, 1976, incorporated by reference herein),
`lanolin and lanolin derivatives, esters such as isopropyl
`myristate and triglycerides such as coconut oil or hy(cid:173)
`drogenated tallow.
`Free fatty acid such as coconut fatty acid can be
`added to the compositions herein to improve the vol-
`20 ume and quality (creaminess) of the lather produced by
`the compositions herein.
`Conventional perfumes, dyes and pigments can also
`be incorporated into compositions of. the invention at
`levels up to about 5%. Perfumes are preferably used at
`levels of from about 0.5% to 3% and dyes and pigments
`are preferably used at levels of from about 0.001% to
`about 0.5%.
`
`R240
`
`H
`I
`CH
`I
`CHO
`I
`H-C-H
`·I
`X
`
`H
`
`y
`
`and alkyl benzene sulfonates having the formula
`
`25
`
`30
`
`In the above formulae, R24 is a straight or branched
`chain alkyl of from about 8 to about 24 carbon atoms; M 35
`is an alkali metal or ammonium ion; x is a number of
`from 1 to about 10; y is a number offrom 1 to 4; and X
`is selected from the group consisting of chlorine, hy(cid:173)
`droxyl, and - S03M, at least one X in each molecule
`being - S03M. Examples of nonionic synthetic deter- 40
`gents are ethoxylated fatty alcohols (e.g., the reaction
`product of one mole of coconut fatty alcohol with from
`about 3 to about 30 moles of ethylene oxide) and fatty
`acid amides such as coconut fatty acid monoethanolam(cid:173)
`ide and stearic acid diethanolamide. Although it may be 45
`desirable in some instances to incorporate synthetic
`detergents into the compositions of the present inven(cid:173)
`tion, the compositions herein can be free of synthetic
`detergents. Preferred are the mild synthetic surfactants
`disclosed in U.S. Pat. No. 4,673,525, Small et al., issued so
`Jun. 16, 1987, incorporated herein by reference.
`
`Insoluble Alkaline Earth Metal Soaps
`Insoluble alkaline earth metal soaps such as calcium
`stearate and magnesium stearate can also be incorpo- 55
`rated into compositions of the present invention at lev(cid:173)
`els up to about 30%. These materials are particularly
`useful in toilet bars in which synthetic detergents are
`present in that they tend to reduce the relatively high
`solubility which such bars normally have. These alka- 60
`line earth metal soaps are not included within the term
`"soap" as otherwise used in this specification. The term
`"soap" as used herein refers to the alkali metal soaps.
`
`Optional Components
`The compositions of the present invention can con(cid:173)
`tain optional components such as those conventionally
`found in personal cleansing products. Conventional
`
`65
`
`Bar Preparation
`Toilet bars of the present invention can be prepared
`in any conventional manner. E.g., the bulky amine cati(cid:173)
`onic polymer can be added to noodles of the base soap
`mixture containing from about 10% to about 22% mois(cid:173)
`ture in an amalgamator. Any optional ingredients such
`as perfumes, dyes, etc., are also added to the amalgama(cid:173)
`tor. The mixture is processed in the amalgamator and
`milled in the conventional manner under conventional
`conditions. It is then extruded (plodded) into logs for
`cutting and stamping into toilet bars.
`In a method of making the bar of the present inven(cid:173)
`tion, the bulky amine cationic polymer is added to soap
`noodle and mixed in the soap mixing steps of the soap
`bar making process.
`The soap bars of this invention preferably contain up
`to 20% of a synthetic surfactant. If a synthetic surfac(cid:173)
`tant is included, a mild one is preferred. A mild syn(cid:173)
`thetic surfactant is defined herein as one which does
`relatively little damage to the barrier function of the
`stratum corneum. The mild surfactant is preferably used
`at a level of0-20%, preferably about 2-15%. The fatty
`acid soap and mild surfactant mixture preferably has a
`ratio of 2.5:1 to 37:1, preferably from 2.5:1 to 14:1, and
`most preferably from 6.5:1 to 14:1, soap:synthetic.
`A preferred soap bar of this invention also contains
`from about 2% to about 17% moisturizer, preferably
`one selected from glycerin and free fatty acid or mix(cid:173)
`tures thereof. The more preferred bar of this invention
`contains at least 4% moisturizer.
`Some preferred mild synthetic surfactants useful in
`this invention include alkyl glyceryl ether sulfonate
`(AGS), anionic acyl sarcosinates, methyl acyl taurates,
`N-acyl glutamates, alkyl glucosides, acyl isethionates,
`alkyl sulfosuccinate, alkyl phosphate esters, ethoxylated
`alkyl phosphate esters, alkyl ether sulfates, methyl glu(cid:173)
`cose esters, protein condensates, mixtures of alkyl ether
`sulfates and alkyl amine oxides, betaines, sultaines, and
`mixtures thereof. Included in the surfactants are the
`
`4
`
`

`
`7
`alkyl ether sulfates with 1 to 12 ethoxy groups, espe(cid:173)
`cially ammonium and sodium Iaury] ether sulfates.
`Alkyl chain lengths for these surfactants are Cs-C22.
`preferably Cw-CJs. The most preferred mild surfactant
`is sodium CN AGS.
`The following examples are presented by way of
`illustration only.
`
`5,202,048
`
`8
`then plodded into soap noodles and conveyed via a
`transport plodder to a fmal milling step.
`The mixture is milled using a four-roll mill, plodded,
`and then stamped into toilet bars of any convenient size
`5 and shape. The resulting bars are tested for odor. The
`bars have a pH of 9.5 in a 1% aqueous solution.
`
`EXAMPLES 1 AND 2
`Toilet bars made using the ingredients set out in 10
`Table 2.
`
`TABLE2
`
`Odor Test Procedure
`Polymer Cleaning
`Stock samples of polymer are cleaned by swelling the
`polymer with water followed by extensive aeration.
`These "cleaned" polymers are fairly amine odor-free.
`After long storage times, some of these polymers exbib(cid:173)
`
`fied polymers required little, if any, cleansing prior to
`testing! evaluating.
`
`----=------.,.,,..----------__;;-- 15 ited a slight, but recognizable amine odor. Bulky modi(cid:173)
`
`Ingredient
`Sodium Tallowate<I)
`Sodium Cocoate(l)
`Water
`Sodium Cocoglyceryl Ether
`Sulfonate (AGS)
`Glycerin
`Coconut Fatty Acid
`Triclocarban
`Sodium Chloride
`Fragrance
`Polyquatemium-7<2)
`LM-200(3)
`Guar-HPTd4)
`Titanium Dioxide
`Tetrasodium EDT A
`BTH(S)
`Miscellaneous(6)
`
`Ex. I
`Parts
`32.90
`32.90
`9.SO
`8.80
`
`Ex. 2
`Parts
`32.90
`32.90
`9.SO
`8.80
`
`4.00
`3.80
`!.SO
`1.20
`1.20
`1.00
`1.00
`
`0.3S
`0.06
`0,02
`
`4.00
`3.80
`!.SO
`1.20
`1.20
`1.00
`
`1.00
`0.3S
`0.06
`0.02
`
`20
`
`Effects Testing Procedures
`The general procedure followed in evaluating the
`effects of pH on polymer or final product odor was to
`place about 200 mg of the clean polymer (or a finished
`product) in a screw-top vial (8 dram) and then add the
`test solution (bufferi at pH values of 7; -to, or 14). The
`25 vials are capped and the odor allowed to build up for a
`short amount of time. Odor is evaluated via olfactory
`sensing by a panel of experts.
`The pH buffers are commercially available buffers:
`pH 7-KH2P04-NaOH
`pH 10-H3B03-KOH
`pH 14-lN NaOH.
`
`100.00
`Totals 100.00
`(IJn.. vollieS stated for sodium tallowate and sodium cocooote iDclude a low level 30
`(>0.1%) ofUDaaponifiable material.
`(l>n,. tnde aame for Polyquaternium-7 is Meraquat ~-
`<3)LM-200 is a cationic ceUulolic polymer comprisin& a bullty cocoyl amine.
`<4louar HPTC is auar bydroxypropyltriammollium chloride is JIIJU&r C-1 S (Hi(cid:173)
`Tek). Molecular weiJbt is about 200,000 ± 75,000.
`<5lsHT is iDcluded in the rapective perfume formulas to impart preservative/anti-
`oxidant properties both to the perfume and to the fmisbed bar formula.
`<6)-MisceUaneous" includes a low level of sodium sulfate and unsulfoaated alcohol
`which come in, e.g., as a by-product of the AGS stream.
`
`35
`
`TABLE 3
`Qdor Evaluation of Polymers and Products Under
`Induced Alkaline Conditions (pH-10-14)
`Polymer/Product
`Odor Evaluation
`Strong amine odor
`IR.-400
`Strong amine odor
`Jaguar C-IS
`LM-200
`No amine odor
`Product of Ex. 1
`No amine odor
`_____ Pr_od __ u_ct_o_f_Ex __ .2 ______ str_o_n~g_urum __ ·_e_od_o_r ______ __
`Note:
`Ex. I product produced with LM-200
`Ex. 2 product produced with }IIJU&r
`
`In general, making procedures common to those used
`for conventional toilet soap bar making are employed.
`
`40
`
`Mixing/Milling Steps
`Polymer Addition Step
`Plodded soap noodles are conveyed to a continuous
`mixer (CM) where approximately 1.0 part of cationic 45
`polymer is introduced, mixed, and plodded with the
`soap noodles. Uniform distribution during this addition
`and mixing step is important for acceptable bar feel
`performance. The polymer/soap noodles (generic noo-
`dies) are conveyed to milling.
`
`Generic Milling Step
`Two four-roll soap mills (feed, stationary, middle,
`and top rolls) are used in this step. This is a split milling
`(two set of mills are used in parallel) process to obtain a 55
`homogeneous mix. Efficient milling is needed in this
`intimate mixing step.
`
`Dry Mixing Step
`The generic noodles are conveyed to a second pro- 60
`cess system continuous mixer (CM) for the addition and
`mixing of other minors. This mix is plodded and con(cid:173)
`veyed to the third process CM.
`
`Wet Mixing Step
`The perfume and NaCI/sodium ethylene diamine
`tetra acetate (EDT A) solution are added and mixed in
`this wet mixing (CM) step. This fmished soap formula is
`
`65
`
`JR-400 made by Union Carbide Corporation and
`JAGUAR C-15 made by Hi-Tek Polymers, Inc., are
`outside the selected polymers of this invention.
`What is claimed is: .
`. .
`. .
`1. A personal cleansmg compos1t1on compnsmg from
`so about 5% to about 90% by weight of surfactant selected
`from the group consisting of synthetic surfactant, alkali
`metal soap, and mixtures thereof; and from about 0.2%
`to about 5% by weight bulky amine cationic polymer,
`said bulky amine cationic polymer being essentially free
`of potential labile odoriferous amine groups; wherein
`said bulky amine cationic polymer is: Guar (POLY(cid:173)
`MER)-CR'HCR2R3-CH2NR4R~R6 wherein R'-R3 is a
`-H or -OH substituent, and wherein at least one of
`R4, R~ and R6 are selected from the group consisting of
`alkyl having a chain length of from about 2 to about 24
`carbon atoms, and alkoxy alkyl containing from about 2
`to about 12 carbon atoms, and mixtures thereof; and
`wherein said personal cleansing composition bas an
`alkaline pH of at least about 7.5 in a 1% aqueous solu(cid:173)
`tion.
`l. The personal cleansing composition of claim 1
`wherein aid composition is in a form selected from
`liquids, pastes or bars.
`
`5
`
`

`
`10
`is present in said mixture at a level to provide from
`about 0.2% to about 5% by weight of said polymer
`in said composition; said mixture containing from
`about 6% to about 15% moisture;
`(b) milling said mixture into a uniform mixture;
`(c) plodding said uniform mixture;
`(d) extruding said milled and plodded mixture; and
`(e) stamping said extruded mixture into toilet bars.
`7. The personal cleansing composition of claim 1
`10 wherein said composition contains from about 2% to
`about 20% of synthetic surfactant selected from alkyl
`glyceryl ether sulfonates, anionic acyl sarcosinates,
`methyl acyl taurates, N-acyl glutamates, alkyl gluco-
`mixtures thereof; and
`15 sides, acyl isethionates, alkyl sulfosuccinates, alkyl
`phosphate esters, ethoxylated alkyl phosphate esters,
`wherein said polymer has a molecular weight of from
`about 50,000 to about 1,000,000.
`methyl glucose esters, protein condensates, mixtures of
`ethoxylated alkyl sulfates and alkyl amine oxides, beta-
`4. The personal cleansing composition of claim 1
`wherein said cationic polymer is present at from about
`ines, sultaines, the alkyl ether sulfates with 1 to 12 eth-
`20 oxy groups, and mixtures thereof, wherein said syn-
`0.5% to about 4% by weight.
`thetic surfactant contains alkyl chains containing from
`5. The personal cleansing composition of claim 1
`wherein said pH is at least about 8.5.
`about 8 to about 22 carbon atoms.
`8. The composition of claim 7 wherein said composi-
`6. A process for preparing the personal cleansing
`composition of claim 1 comprising the steps of:
`tion contains from about 5% to about 10% of a Cs-Cts
`(a) forming a mixture of said cationic polymer and 25 alkyl glyceryl ether sulfonate. .
`alkali metal soap mix noodles wherein said polymer
`•
`•
`•
`•
`
`CH2CH20H
`I
`Guar-CH2-0-CH2-CH(OH)-CH2-N+CH3
`I
`CH3
`
`·and
`,
`
`•
`
`9
`3. The personal cleansing composition of claim 1
`wherein said cationic polymer is selected from the
`group consisting of:
`
`5,202,048
`
`s
`
`30
`
`35
`
`40
`
`45
`
`50
`
`ss
`
`60
`
`65
`
`6