US4857212A
Expired / Lapsed
US
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Fiber-treating composition comprising microemulsion of carboxy-substituted siloxane polymer and use thereof
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1988-04-21
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Granted: 1989-08-15
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Expires: 2008-04-21
Abstract
Abstract A fiber-treatment composition based on a microemulsion, having an average particle size not larger than 0.15 micrometers, of a carboxyl-modified organopolysiloxane having a degree of polymerization of form 350 to 2000 and having at least two carboxyl groups in each molecule is characterized by an excellent mechanical stability, dilution stability, and blending stability, and can impart a durable softness, smoothness, wrinkle resistance, and compression recovery to fibrous material without the occurrence of oil spotting. Further stability of the microemulsion can be realized by adding a basic material to the microemulsion to adjust the pH of the microemulsion, preferably to a value of from 6.5 to 9.0.
Inventors
- 👤 Isao Ona
- 👤 Masaru Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:56
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6433; D06M23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
A fiber-treatment composition comprising a microemulsion of a carboxyl-modified organopolysiloxane having the general formula AR.sub.2 SiO(R.sub.2 SiO).sub.x-1 (RASiO).sub.y R.sub.2 SiA wherein R is a monovalent hydrocarbon group, A is R or R 1 COOH, R 1 is a divalent organic group, x=350 to 2,000, y=0 to 200, and x+y=350 to 2,000 and having at least two R 1 COOH groups in each molecule, said microemulsion having an averge particle size not larger than 0.15 micrometers and containing a sufficient amount of base wherein the pH of the microemulsion is 6.5 to 9.0.
Claim 2
Dependent Claim
92 words
A fiber-treatment composition comprising a microemulsion of a carboxyl-modified organopolysiloxane having the general formula AR.sub.2 SiO(R.sub.2 SiO).sub.x-1 (RASiO).sub.y R.sub.2 SiA wherein R is a monovalent hydrocarbon group, A is R or R 1 COOH, R 1 is a divalent organic group, x=350 to 2,000, y=0 to 200, and x+y=350 to 2,000 and having at least two R 1 COOH groups in each molecule, said microemulsion having an averge particle size not larger than 0.15 micrometers and containing a sufficient amount of base wherein the pH of the microemulsion is 6.5 to 9.0.
Claim 3
Dependent Claim
95 words
A fiber-treatment composition according to claim 1 wherein the microemulsion has been prepared by the mechanical emulsification of (A) 100 weight parts of a carboxyl-modified organopolysiloxane having the general formula AR.sub.2 SiO(R.sub.2 SiO).sub.x-1 (RASiO).sub.y R.sub.2 SiA wherein R is a monovalent hydrocarbon group, A is R or R 1 COOH, R 1 is a divalent organic group, x=350 to 2,000, y=0 to 200, and x+y=350 to 2,000 and having at least two R 1 COOH groups in each molecule, in water in the presence of (B) 15 to 60 weight parts nonionic and/or anionic surfactant.
Claim 4
Dependent Claim
25 words
A method for treating fiber, said method comprising (a) applying the fiber-treatment composition of claim 1 to the fiber and (b) drying the treated fiber.
Claim 5
Dependent Claim
25 words
A method for treating fiber, said method comprising (a) applying the fiber-treatment composition of claim 2 to the fiber and (b) drying the treated fiber.
Claim 6
Dependent Claim
9 words
Treated fibers prepared by the method of claim 3.
Claim 7
Dependent Claim
9 words
Treated fibers prepared by the method of claim 4.
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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) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |