NZ223355A

NZ223355A - Shampoo product free of severe eye irritation

Info

Publication number: NZ223355A
Application number: NZ223355A
Authority: NZ
Inventors: Marvin E Goldberg; Elizabeth I Starr
Original assignee: Revlon
Priority date: 1987-01-30
Filing date: 1988-01-29
Publication date: 1990-11-27
Also published as: BR8805088A; ZA88646B; EP0301082A4; WO1988005812A1; JPH01502030A; AU600108B2; AU1366188A; EP0301082A1

Description

New Zealand Paient Spedficaiion for Paient Number £23355 js' « i ; m Priority Date(s) 223355 OfV Complete Specification Filed: 1-*7 Class: Publication Date: P.O. Journal, No: ^7'HD^'1990 Patents Form No. 5 NEW ZEALAND i PATENTS ACT 1953 COMPLETE SPECIFICATION SHAMPOO Jf/We, REVLON INC., of 767 Fifth Avenue, New York New York, U.S.A., a Corporation of the State of Delaware, U.S.A. hereby declare the invention, for which✓J/we pray that a patent may be granted to nr£/us, and the method by which it is to be performed, to be particularly described in and by the following statement: (followed by page la) - 1 • o 22»55 la PS-t SHAMPOO The present invention relates to shampoo formulations. More particuarly, it relates to shampoos useful for washing the hair of children/ who are particularly sensitive to eye irritation that can be caused by some known shampoo products. The invention relates in particular to a shampoo formulation that can be dispensed from a pressurized container as a mousse-type product.

In summary/ the present invention is a water-based shampoo product comprising (a) 0.01 to 1.0 wt.% of a quaternary nitrogen-containing cellulose ether of the formula (1): <Rcell-(0R>3>y <*> wherein t^ie residue of an anhydroglucose unit; y is an integer having a value of from about 200 to about 5/000; and each R independently represents a substituent group of the general formula (2): -(CaH2a0>m-<CH2CH(X)0)n-(CbH2b°»p-<CcH2c»q-Rl <2> in which a is 2 or 3; b is 2 or 3; c is 1/ 2 or 3; m is an integer having a value of 0 to 10; n is 0/ 1/ 2 or 3; p is an integer having a value of 0 to 10; q is 0 or 1; R"*" is -H/ -C00H/ -COONa/ -COOK, or COONH4; and X is C1~+N(CH3)3~CH2-; provided that when q is O then R"*" is H; (followed by Page 2) v.-'' f ' ■ ' ' ? , .)VrJ""'?'*'^^?^V' 223355 $ P° & r) (b) 5 wt.% to 50 wt.% of a surfactant of the formula (3): (ALK)-(0CH2CH2)i0S03Na (3) /"> wherein (ALK) is a C2o~C18 saturate<^ or m°no-unsaturated straight or branch-chain alkyl or alkylene group and i is 1-6; (c) 2 wt.% to 20 wt.% of a betaine of the formula (4); (ALK)-C(0)NH(CH2)jN(CH3)2C00 (4) (ALK) is a C2o~°C18 saturatec^ or mono- wherein '• unsaturated straight or branched-chain alkyl or alkylene group, and j is 1-5; (d) 0.05 wt.% to 1.0 wt.% of a polymer of the formula (5): H(OCH-CH-) ,0H 2 Z Q (5) O o 4 wherein d is 20,000 to 25,000; and (e) optionally, 0.01 wt.% to 2.0 wt.% of benzyl alcohol.

The present invention contains as indicated several components which in combination provide a product having useful properties and free of undesirable side effects. As indicated, the product includes water, typically in an amount comprising about 50 to about 75 weight percent. 1r O' % "S5JUN1990 .,,: 22 3 3 55' One component is a quaternary nitrogen-containing cellulose ether of the formula (1) disclosed hereinabove. Particularly preferred are derivatives of hydroxyethyl cellulose, including the compound known generically as polyquaternium-10 available commercially from Union Carbide. The quaternary nitrogen-containing cellulose ether can be synthesized following the procedure described generally in U.S. Patent No. 3/472/840. The amount of this component can generally range from 0.01 to 1.0 weight percent. A preferred amount is 0.1 to 0.5 weight percent.

As used herein/ an anhydroglucose residue refers to a glucopyranose in which three of the hydroxy groups have been removed from three of its positions on the backbone of the glucose molecule and which is capable of being substituted to the OR group at these positions. Examples of anhydroglucose residue include: and the like.

The preferred anhydroglucose residue is: vJ - '.i —A- 223355 Another component in the shampoo of the present invention is an anionic surfactant of the general formula (3) described above- The V.... £. preferred embodiment of this ingredient is sodium laureth sulfate (3 EtO)/ that is, the sodium salt of sulfated ethoxylated lauryl alcohol in which/ in the above formula (3)/ (Alk) is CH3(CH2)11-and i is 3. The preferred component is available commercially. This component can be present in an amount ranging from about 5 to about 50 weight percent of the composition/ and more preferably about 10 to about 40 weight percent.

Another component of the present invention is a betaine of the formula (4) given above.

The preferred embodiment of this component is cocamidopropyl betaine/ a commercially available product in which in formula (4) above the substitutent (ALK) is derived from coconut oil and j is 3.

This component can be present generally in the amount ranging from about 2 to about 20 weight percent of the composition/ and more preferably about 2 to about 10 weight percent.

Another component of the present invention is 0.05 to 1.0 weight percent of a polyoxyethylene of the general formula (5) given above. A preferred range is 0.1 to 0.5 weight percent. The degree of polymerization d can be about 20/000 to about 25/000/ and is more preferably about 21/000.

The preferred polymer in which the degree of polymerization is about 21/000 is available commercially and is known generically as PEG-21M. 223355 ( ; '-..J- The composition of the present invention also preferably contains benzyl alcohol, in an amount ranging from about 0.1 to about 2.0 weight percent and more preferably about 0.3 to about 0.7 weight percent.

The composition of the present invention can also optionally contain preservatives, such as methyl paraben and/or propyl paraben, in an effective amount which will generally be up to about 0.5 weight percent of the composition. The composition can also optionally contain components to provide cosmetically and esthetically acceptable fragrance; examples of such components are numerous and well known to those skilled in this art.

The amount of fragrance is generally up to about 0.5 weight percent or may range up to about 1.0 weight percent.

The composition of the present invention can be prepared by simply mixing together each of the above components in the water base. Preferably# the resulting composition is packaged in a pressurized dispensing system, containing typically 75-99 percent by weight of the composition and the balance a propellant such as any of the hydrocarbons or halogenated hydrocarbons well known for use in this type of application. The mixture and propellant are charged into a pressurized container fitted with an appropriate aerosol dispensing nozzle.

One example of a satisfactory shampoo composition in accordance with the present invention is the following:

Claims

.. % & 3!3 .I? -6- 223355 S~~\ 10 15 20 Ingredient Polyquaternium-10 Sodium laureth sulfate (3Et0) Cocamidopropyl betaine PEG-21M (polymer of ethylene oxide) Benzyl alcohol Methyl paraben Propyl paraben Fragrance Water Amount (wt.%) 0.3 11.2 4.5 0.2 0.5 0.2 0.1 0.5 to 100 q.s The above formulation was put into an aerosol system at two different ratios: 90% concentrate and 10% fluorocarbon "Fi2-114"' and concentrate and 5% "A-46" hydrocarbon propellant. This shampoo vehicle contains both anionic and cationic materials and is relatively mild upon contact with the eyes. It is superior in performance to known shampoos in mildness/ cleaning/ rinseability and conditioning properties. 25 o 30 35 ™HAT //WE CLAIM IS:- 223355 -7- n

1. A water-based shampoo composition comprising in water (a) 0.01 to 1.0 wt.% of a quaternary nitrogen-containing cellulose ether of the formula O 10 CRcell-(OR)33' wherein ^ce^2_ is the residue of an anhydroglucose unit; y is an integer having a value of from 200 to 5,000; and each R independently represents a substituent group of the general formula 15 -(Caa2a0'n,-<CH2CHtX)0»n-(CbH2b°'p-(CcH2c)Q-Rl © 20 25 in which a is 2 or 3; b is 2 or 3; c is 1/ 2 or 3; m is an integer having a value of 0 to 10; n is 0, 1, 2 or 3; p is an integer having a value of 0 to 10; q is 0 or 1; R^ is -H, -COOH, -COONa, -COOK, or C00NH4; and X is Cl~+N(CH3)3~CH2-; provided that when q is 0 then R"*" is H;;(b) 5 wt.% to 50 wt.% of a surfactant of the formula (ALK)-(0CH2CH2)^OSO^Na wherein (ALK) is a cio~Ci8 saturate(3 or mono-unsaturated straight or branched-chain alkyl or alkylene group, and i is 1-6;;(c) 2 wt.% to 20 wt.% of a betaine of the formula;30;35;(ALK)-C(0)NH(CH 2)(CH3)2COO;-8-;9 v r rr iC o O t j O;n wherein (ALK) is a c^o~C18 saturatec3 or mono-unsaturated straight or branched-chain alkyl or alkylene group/ and j is 1-5;;(d) 0.05 wt.% to 1.0 wt.% of a polymer of the formula;H(OCH_CH_),OH £ z a;10;15;20;25;30;35;wherein d is 20/000 to 25/000; and;(e) optionally 0.1 wt.% to 2.0 wt.% of benzyl alcohol.;

2. A water-based shampoo composition according to Claim 1 comprising in water;(a) 0.01 to 0.5 wt.% of a quaternary nitrogen-containing cellulose ether in which f(0R3) ] *8 ^-(2-hydroxy-3- (trimethylanunonio) propoxy)ethyl-2-hydroxy-3-(trimethylammonio)propyl ether and salts thereof; (b) 5 to 40 wt.% of sodium laureth sulfate (3EtO); (c) 2 to 10 wt.% of cocamidopropyl betaine; (d) 0.05 to 1.0 wt.% of a polymer having the formula H(OCH2CH2)dOH wherein d is 21,000; and (e) 0.1 to 0.7 wt.% benzyl alcohol.

3. A water-based shampoo composition according to claim 1 and substantially as described inrthis specifj with reference to the examples. -9- 223355

4. A shampoo product comprising 75-99 weight percent of a composition according to any one of claims 1 to 3 and 1-25 weight percent of hydrocarbon or halogenated hydrocarbon, 5 in a closed container fitted with a nozzle for dispensing said shampoo product. 10 15 20