US3985923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for imparting renewable soil release finish to polyester-containing fabrics
Assignee: Procter and Gamble Co
•
Filing: 1975-01-17
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Granted: 1976-10-12
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Expires: 1995-01-17
Abstract
Abstract Process for improving the subsequent removability of oily soils and stains from polyester-containing fabrics through application of a renewable soil release finish to said fabrics from a dilute aqueous solution having an acid pH.
Inventors
- 👤 Marino S. Basadur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:23
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C11D3/0005; C11D3/0036; C11D3/3703; C11D3/3715; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
229 words
A process for imparting a renewable soil release finish to polyester-containing fabrics comprising: A. contacting said fabrics with a dilute aqueous solution of a composition comprising: a. from about 5% to about 97.5% of a copolymer comprising: 1. a dibasic carboxylic acid of the following general formula HOOC--A--COOH wherein A is a bivalent organic radical selected from the group consisting of alkylene, arylene, aralkylene, alkarylene and cycloalkylene radicals having from 3 to about 14 carbon atoms; and 2. a glycolic compound which is a polyglycol selected from the group consisting of compounds of the following general formula H[--O--B--].sub.n OH wherein B is a bivalent organic radical selected from the group consisting of alkylene and cycloalkylene radicals having from 2 to about 4 carbon atoms, and wherein n indicates the degree of polymerization and ranges from about 6 to about 500, and wherein the ratio of dicarboxylic acid to total glycolic compounds is 1:1 and the the average molecular weight is from about about 1,000 to about 100,000; and b. from about 2.5% to 95% of a water soluble acidic compound; said copolymer being present in said aqueous solution at a concentration of from about 0.001% to about 1.0% by weight and said aqueous solution being substantially free of synthetic acid emulsion polymers and substances which are capable of causing the swelling of polyester fibers; and B. drying said fabrics.
Claim 2
Dependent Claim
229 words
A process for imparting a renewable soil release finish to polyester-containing fabrics comprising: A. contacting said fabrics with a dilute aqueous solution of a composition comprising: a. from about 5% to about 97.5% of a copolymer comprising: 1. a dibasic carboxylic acid of the following general formula HOOC--A--COOH wherein A is a bivalent organic radical selected from the group consisting of alkylene, arylene, aralkylene, alkarylene and cycloalkylene radicals having from 3 to about 14 carbon atoms; and 2. a glycolic compound which is a polyglycol selected from the group consisting of compounds of the following general formula H[--O--B--].sub.n OH wherein B is a bivalent organic radical selected from the group consisting of alkylene and cycloalkylene radicals having from 2 to about 4 carbon atoms, and wherein n indicates the degree of polymerization and ranges from about 6 to about 500, and wherein the ratio of dicarboxylic acid to total glycolic compounds is 1:1 and the the average molecular weight is from about about 1,000 to about 100,000; and b. from about 2.5% to 95% of a water soluble acidic compound; said copolymer being present in said aqueous solution at a concentration of from about 0.001% to about 1.0% by weight and said aqueous solution being substantially free of synthetic acid emulsion polymers and substances which are capable of causing the swelling of polyester fibers; and B. drying said fabrics.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the bivalent organic radical, A, of the copolymer is selected from the group consisting of phenylene, butylene, biphenylene and (methylene).
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein the bivalent organic radical, A, is phenylene.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein the polyglycol is polyethylene glycol.
Claim 6
Dependent Claim
21 words
The process of claim 4 wherein the polyethylene glycol has a degree of polymerization of from about 30 to about 40.
Claim 7
Dependent Claim
46 words
The process of claim 5 wherein the copolymer contains as a third component a glycol having the following general formula HO--X--OH wherein X is a bivalent organic radical selected from the group consisting of alkylene and cycloalkylene radicals having from 2 to about 4 carbon atoms.
Claim 8
Dependent Claim
17 words
The process of claim 6 wherein X is the ethylene radical and the glycol is ethylene glycol.
Claim 9
Dependent Claim
27 words
The process of claim 7 wherein the molar ratio of dicarboxylic acid to polyethylene glycol to ethylene glycol in the copolymer is from about 1:0.8:0.2 to 1:0.2:0.8.
Claim 10
Dependent Claim
20 words
The process of claim 8 wherein the average molecular weight of the copolymer is from about 3000 to about 5000.
Claim 11
Dependent Claim
18 words
The process of claim 9 wherein the dilute aqueous solution is the rinse bath of a laundering operation.
Claim 12
Dependent Claim
23 words
The process of claim 8 wherein the composition contains as an additional ingredient from about 0.1% to about 10% of an emulsifying agent.
References Cited (Backward Citations)
US3360494A
Cited
US3681244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |