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Patent US3897206A successfully refreshed from Google Patents.
US3897206A
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Method of preparing cellulosic textile materials having improved soil release and stain resistance properties
Assignee: Bibb Co
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Filing: 1972-12-27
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Granted: 1975-07-29
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Expires: 1992-12-27
Abstract
Abstract Cellulosic textile materials having improved soil release and stain resistance properties are obtained by impregnation with an ethylene-maleic anhydride copolymer or an ethylene-maleic acid copolymer and drying and curing the resulting impregnated product. The procedure is applicable to fibers, yarns and manufactured cloths of various hydroxyl-containing polymers such as cotton, cotton-containing materials and blends of cellulosic materials with various synthetics such as polyesters.
Inventors
- 👤 John A Kearney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:18
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
79 words
A PROCESS FOR PRODUCING CELLULOSIC TEXTILE MATERIALS HAVING IMPROVED SOIL RELEASE AND STAIN RESISTANCE PROPERTIES WHICH COMPRISES IMPREGNATING SAID TEXTILE MATERIAL WITH A SOLUTIO OF AN ETHYLENE-MALEIC ANHYDRIDE COPOLYMER OR AN ETHYLENEMALEIC ACID COPOLYMER IN THE PRESENCE OF AN ESTERIFICATION CATALYST TO CAUSE A REACTION BETWEEN THE CELLULOSIC MATERIAL AND THE SAID COPOLYMER, DRYING THE IMPREGNATED MATERIAL AT FROM ROOM TEMPERATURE TO ABOUT 300*F., AND THEN CURING THE IMPREGNATED MATRIAL AT A TEMPERATURE OF ABOUT 310* TO ABOUT 410*F.
Claim 2
Dependent Claim
79 words
A PROCESS FOR PRODUCING CELLULOSIC TEXTILE MATERIALS HAVING IMPROVED SOIL RELEASE AND STAIN RESISTANCE PROPERTIES WHICH COMPRISES IMPREGNATING SAID TEXTILE MATERIAL WITH A SOLUTIO OF AN ETHYLENE-MALEIC ANHYDRIDE COPOLYMER OR AN ETHYLENEMALEIC ACID COPOLYMER IN THE PRESENCE OF AN ESTERIFICATION CATALYST TO CAUSE A REACTION BETWEEN THE CELLULOSIC MATERIAL AND THE SAID COPOLYMER, DRYING THE IMPREGNATED MATERIAL AT FROM ROOM TEMPERATURE TO ABOUT 300*F., AND THEN CURING THE IMPREGNATED MATRIAL AT A TEMPERATURE OF ABOUT 310* TO ABOUT 410*F.
Claim 3
Dependent Claim
11 words
The process of claim 1, wherein said textile material is cotton.
Claim 4
Dependent Claim
16 words
The process of claim 1, wherein said textile material is a blend containing cotton or rayon.
Claim 5
Dependent Claim
17 words
The process of claim 1, wherein said textile material is a blend containing cotton and a polyester.
Claim 6
Dependent Claim
18 words
The proCess of claim 1, wherein said textile material is in the form of a cloth or sheeting.
Claim 7
Dependent Claim
16 words
The process of claim 1, wherein said textile material is in the form of a fiber.
Claim 8
Dependent Claim
16 words
The process of claim 1, wherein said textile material is in the form of a yarn.
Claim 9
Dependent Claim
19 words
The process of claim 1, wherein the drying step is conducted for about 30 seconds to about 1 hour.
Claim 10
Dependent Claim
19 words
The process of claim 1, wherein the curing step is conducted for about 15 seconds to about 5 minutes.
Claim 11
Dependent Claim
15 words
The process of claim 1, further including the step of after-washing the cured textile material.
Claim 12
Dependent Claim
31 words
The process of claim 1, wherein said copolymer is a linear copolymer of ethylene and maleic anhydride having a viscosity as a 2% aqueous solution of about 2.0 to 5.0 centipoises.
Claim 13
Dependent Claim
18 words
The process of claim 1, wherein said copolymer has a molecular weight of about 1000 to about 100,000.
Claim 14
Dependent Claim
27 words
The process of claim 1, wherein a solution having a concentration of about 2 to 10% by weight of said copolymer is applied to the textile material.
Claim 15
Dependent Claim
18 words
The process of claim 1, wherein an aqueous solution of said copolymer is applied to the textile material.
Claim 16
Dependent Claim
12 words
The process of claim 1 wherein said copolymer is dissolved in water.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |