Method for uniform deposition of fabric care actives in a non-aqueous fabric treatment system

• US 8,148,315 B2
• Filed: 06/24/2004
• Issued: 04/03/2012
• Est. Priority Date: 06/27/2003
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Baker, Keith Homer, O'Neil, Julie Ann, Arredondo, Victor Manuel, Gardner, Robb Richard, Dupont, Jeffrey Scott, Sivik, Mark Robert, Hopkins, Jeffrey Jon, Scheper, William Michael
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US10/876,033
• Publication Number:
  US 20050000028A1
• Time in Patent Office: 2,840 Days
• Field of Search: 510/276, 510/285, 510/101, 510/304, 510/347, 510/466, 510/407, 510/417, 510/432, 510/528, 510/400
• US Class Current: 510/285
• CPC Class Codes: C11D 1/82 Compounds containing silicon
• CPC Class Codes: C11D 17/0004 Non aqueous liquid compositions comprising insoluble particles
• CPC Class Codes: C11D 17/0017 Multi-phase liquid compositions
• CPC Class Codes: C11D 2111/12 Soft surfaces, e.g. textile
• CPC Class Codes: D06L 1/04 combined with specific additives D06L1/06 takes precedence
• CPC Class Codes: D06L 1/12 using aqueous solvents
• CPC Class Codes: D06M 23/10 Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof

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

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 (χ

₅₀) 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.

2. 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.

3. 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.

4. 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.

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

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

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

8. 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.

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

10. The method of claim 1 wherein the emulsifying agent is a siloxane-based surfactant invention having the general formula:

Y_u-(L_t-X_v)_x—

Y′

_w 

 

(I)

L_y-(X_v—

Y_u)_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;

M_aD_bD′

_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 R¹_3-eX_eSiO_1/2 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 R⁴₂SiO_2/2 wherein R⁴ of formula (III) is independently H or an alkyl group;

D′

of formula (III) is R⁵₂SiO_2/2 wherein R⁵ of formula (III) is independently H, an alkyl group, or (CH₂)_f(C₆Q₄)_gO—

(C₂H₄O)_h—

(C₃H₆O)_i(C_kH_2k)_j—

R³, provided that at least one R⁵ of formula (III) is (CH₂)_f(C₆Q₄)_gO—

(C₂H₄O)_h—

(C₃H₆O)_i(C_kH_2k)_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, C_1-10 alkyl, C_1-10 alkenyl, and mixtures thereof;

D″

of formula (III) is R⁶₂SiO_2/2 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, C_1-10 alkyl, C_1-10 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 C_1-4 fluoroalkyl, a C_1-4 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 C_1-30 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 C_1-30 alkyl or alkenyl, a carbohydrate unsubstituted or substituted with a C_1-10 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.

11. 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.