# US 8,148,315 B2 · Method for uniform deposition of fabric care actives in a non-aqueous fabric treatment system

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- Number: US 8,148,315 B2
- Document ID: US8148315B2
- Status: Granted
- Kind: B2
- Application number: 10/876,033
- Filed: 2004-06-24
- Published: 2005-01-06
- Granted: 2012-04-03
- Earliest claimed: 2003-06-27
- Assignees: The Procter & Gamble Company
- Inventors: Keith Homer Baker; Julie Ann O'Neil; Victor Manuel Arredondo; Robb Richard Gardner; Jeffrey Scott Dupont; Mark Robert Sivik; Jeffrey Jon Hopkins; William Michael Scheper
- Web page: https://patentgrep.com/patent/US8148315B2

## CPC

- C11D 1/82: Compounds containing silicon
- C11D 17/0004: {Non aqueous liquid compositions comprising insoluble particles}
- C11D 17/0017: {Multi-phase liquid compositions}
- D06L 1/04: combined with specific additives (D06L1/06 takes precedence)
- D06L 1/12: using aqueous solvents
- D06M 23/10: Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof
- C11D 2111/12: Soft surfaces, e.g. textile
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- D06L: DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS

## Abstract

A method for uniform deposition of fabric care actives to a fabric article in a non-aqueous solvent based fabric treatment process; and compositions capable of uniformly depositing the fabric care actives on the fabric article being treated to achieve maximum benefit.

## Claims

### Claim 1

A method for uniform and efficient deposition of fabric care active onto a fabric article in a non-aqueous fabric treatment process comprising the steps of:
(a) obtaining a delivery system comprising:
from about 90% to about 99.99% by weight of the delivery system of a first phase comprising a silicone lipophilic fluid;
a second phase comprising water as a carrier and a fabric care active selected from the group consisting of soil release polymers, enzymes, perfumes, softening agents, finishing polymers, dye transfer inhibiting agents, dye fixatives, UV protection agents, wrinkle reducing/removing agents, fabric rebuild agents, fiber repair agents, perfume release and/or delivery agents, shape retention agents, fabric and/or soil targeting agents, antibacterial agents, anti-discoloring agents, hydrophobic finishing agents UV blockers, brighteners, pigments, pill prevention agents, temperature control technology, skin care lotions, fire retardants, and mixtures thereof, the carrier being substantially insoluble in the lipophilic fluid; and
an effective amount of an emulsifying agent sufficient to emulsify the composition such that the second phase forms discrete droplets;
(b) contacting a fabric article with the delivery system to deposit on said article from 0.001% to about 3% of said active, based on the dry weight of said article;
(c) removing at least a portion of the lipophilic fluid from said fabric article by a process selected from spinning, squeezing, wringing and combinations thereof; and
(d) heating said fabric article from step (c) to a temperature from about 90° C. to about 200° C., said temperature being at or above the melting temperature of the fabric care active; wherein the second phase is in the form of droplets having a median particle diameter (χ50) of less than about 1000 microns, and wherein in a 1 mL sample of the delivery system, greater than about 0.95 weight fraction of the second phase is in the form of droplets, each droplet having an individual weight of less than 1 wt %, of the total mass of the second phase in the 1 mL sample of the delivery system.

### Claim 2 (depends on 1)

The method of claim 1 wherein amount of fabric care active in the first phase versus the second phase ranges from about 1:2 to 1:1000.

### Claim 3 (depends on 1)

The method of claim 1 wherein a weight ratio of the carrier to the emulsifying agent ranges from about 10000:1 to about 1:1.

### Claim 4 (depends on 1)

The method of claim 1 wherein a weight ratio of the fabric care active to the carrier ranges about 1:1000 to about 3:1.

### Claim 5 (depends on 1)

The method of claim 1 wherein the lipophilic fluid comprises decamethylcyclopentasiloxane.

### Claim 6 (depends on 1)

The method of claim 1 wherein the carrier comprises water, and linear or branched C1-C6 alcohols, C1-C4 glycols, or mixtures thereof.

### Claim 7 (depends on 1)

The method of claim 1 wherein the carrier comprises from about 0.01% to about 5% by weight of the composition.

### Claim 8 (depends on 1)

The method of claim 1 wherein the fabric care active is a water soluble or partially water soluble material, a water insoluble liquid, or a water insoluble solid.

### Claim 9 (depends on 1)

The method of claim 1 wherein greater than about 70 wt % of the fabric care actives is deposited onto the fabric article.

### Claim 10 (depends on 1)

The method of claim 1 wherein the emulsifying agent is a siloxane-based surfactant invention having the general formula:
Yu-(Lt-Xv)x—Y′w (I)
Ly-(Xv—Yu)x-L′z (II)
and mixtures thereof;
wherein L and L′ are solvent compatibilizing (or lipophilic) moieties, which are independently selected from:
(a) C1-C22 alkyl or C4-C12 alkoxy, linear or branched, cyclic or acyclic, saturated or unsaturated, substituted or unsubstituted;
(b) siloxanes having the formula:
MaDbD′cD″d (III)
wherein a is 0-2; b is 0-1000; c is 0-50; d is 0-50, provided that a+c+d is at least 1;
M of formula (III) is R13-eXeSiO1/2 wherein R1 of formula (III) is independently H, or an alkyl group, X of formula (III) is hydroxyl group, and e is 0 or 1;
D of formula (III) is R42SiO2/2 wherein R4 of formula (III) is independently H or an alkyl group;
D′ of formula (III) is R52SiO2/2 wherein R5 of formula (III) is independently H, an alkyl group, or (CH2)f(C6Q4)gO—(C2H4O)h—(C3H6O)i(CkH2k)j—R3, provided that at least one R5 of formula (III) is (CH2)f(C6Q4)gO—(C2H4O)h—(C3H6O)i(CkH2k)j—R3 (formula IIIb), wherein R3 of formula (IIIb) is independently H, an alkyl group or an alkoxy group, f of formula (IIIb) is 1-10, g of formula (IIIb) is 0 or 1, h of formula (IIIb) is 1-50, i of formula (IIIb) is 0-50, j of formula (IIIb) is 0-50, k of formula (IIIb) is 4-8; C6Q4 of formula (IIIb) is unsubstituted or substituted with Q of formula (IIIb) is independently H, C1-10 alkyl, C1-10 alkenyl, and mixtures thereof;
D″ of formula (III) is R62SiO2/2 wherein R6 of formula (III) is independently H, an alkyl group or (CH2)l(C6Q4)m(A)n-[(T)o-(A′)p-]q-(T′)rZ(G)s (formula IIIc), wherein 1 of formula (IIIc) is 1-10; m of formula (IIIc) is 0 or 1; n of formula (IIIc) is 0-5; o of formula (IIIc) is 0-3; p of formula (IIIc) is 0 or 1; q of formula (IIIc) is 0-10; r of formula (IIIc) is 0-3; s of formula (IIIc) is 0-3; C6Q4 of formula (IIIc) is unsubstituted or substituted with Q of formula (IIIc) is independently H, C1-10 alkyl, C1-10 alkenyl, and mixtures thereof; A and A′ of formula (IIIc) are each independently a linking moiety representing an ester, a keto, an ether, a thio, an amido, an amino, a C1-4 fluoroalkyl, a C1-4 fluoroalkenyl, a branched or straight chained polyalkylene oxide, a phosphate, a sulfonyl, a sulfate, an ammonium, and mixtures thereof; T and T′ of (IIIc) are each independently a C1-30 straight chained or branched alkyl or alkenyl or an aryl which is unsubstituted or substituted; Z of formula (IIIc) is a hydrogen, carboxylic acid, a hydroxy, a phosphato, a phosphate ester, a sulfonyl, a sulfonate, a sulfate, a branched or straight-chained polyalkylene oxide, a nitryl, a glyceryl, an aryl unsubstituted or substituted with a C1-30 alkyl or alkenyl, a carbohydrate unsubstituted or substituted with a C1-10 alkyl or alkenyl or an ammonium; G of formula (IIIc) is an anion or cation such as H+, Na+, Li+, K+, NH4+, Ca+2, Mg+2, Cl−, Br−, I−, mesylate or tosylate;
Y and Y′ are hydrophilic moieties, which are independently selected from hydroxy; polyhydroxy; C1-C3 alkoxy; mono- or di-alkanolamine; C1-C4 alkyl substituted alkanolamine; substituted heterocyclic containing O, S, N; sulfates; carboxylate; carbonate; and when Y and/or Y′ is ethoxy (EO) or propoxy (PO), it must be capped with R, which is selected from the group consisting of:
(i) a 4 to 8 membered, substituted or unsubstituted, heterocyclic ring containing from 1 to 3 hetero atoms; and
(ii) linear or branched, saturated or unsaturated, substituted or unsubstituted, cyclic or acyclic, aliphatic or aromatic hydrocarbon radicals having from about 1 to about 30 carbon atoms;
X is a bridging linkage selected from O; S; N; P; C1 to C22 alkyl, linear or branched, saturated or unsaturated, substituted or unsubstituted, cyclic or acyclic, aliphatic or aromatic, interrupted by O, S, N, P; glycidyl, ester, amido, amino, PO42−, HPO4−, PO32−, HPO3−, which are protonated or unprotonated;
u and w are integers independently selected from 0 to 20, provided that u+w≧1;
t is an integer from 1 to 10;
v is an integer from 0 to 10;
x is an integer from 1 to 20; and
y and z are integers independently selected from 1 to 10.

### Claim 11 (depends on 1)

The method of claim 1 wherein the delivery system is applied to the fabric article by a
process selected from the group consisting of immersing, dipping, spraying, brushing on, rubbing on and combinations thereof.