Patent US5484292A successfully refreshed from Google Patents.
US5155178A
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Antistain block copolymer compositions of modified nylon copolymers and high carbon nylons
Assignee: Invista North America LLC
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Filing: 1990-08-08
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Granted: 1992-10-13
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Expires: 2010-08-08
Abstract
Abstract Blends of nylon 6,6, nylon 6 or nylon 6,6/6 copolymer which contain a randomly copolymerized cationic dye modifier are formed by melt blending such copolymer with a polyamide having 8 to 22 carbon atoms per amide link to form a block copolymer composition which is resistant to staining with acid dyes under ambient temperature and pH conditions.
Inventors
- 👤 William T. Windley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:28
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/88; D01F6/90; C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265; C08G69/42; C08L; C08L77/00; D01F6/78; D01F6/80; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23993
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A polymeric composition comprising a block copolymer containing blocks derived from (a) a first polyamide selected from the group consisting of polyhexamethylene adipamide, poly-ε-caprolactam, and a copolymer of hexamethylene adipamide and ε-caprolactam, said first polyamide having from 0.5 to 4 weight percent of a cationic dye modifier which has a sulfonic group and one or two carboxyl groups attached to a benzene nucleus and (b) from 1 to 15 weight percent, based on the total polymer weight, of a high carbon polyamide containing from 8 to 22 carbon atoms per amide link, said polymeric composition having high resistance to staining by acid dyes under ambient conditions.
Claim 2
Dependent Claim
106 words
A polymeric composition comprising a block copolymer containing blocks derived from (a) a first polyamide selected from the group consisting of polyhexamethylene adipamide, poly-ε-caprolactam, and a copolymer of hexamethylene adipamide and ε-caprolactam, said first polyamide having from 0.5 to 4 weight percent of a cationic dye modifier which has a sulfonic group and one or two carboxyl groups attached to a benzene nucleus and (b) from 1 to 15 weight percent, based on the total polymer weight, of a high carbon polyamide containing from 8 to 22 carbon atoms per amide link, said polymeric composition having high resistance to staining by acid dyes under ambient conditions.
Claim 3
Dependent Claim
21 words
The polymeric composition of claim 1 wherein the high carbon polyamide is polyhexamethylene decamide, polyhexamethylene dodecamide, poly-ω-undecalactam, poly-ω-dodecalactam or polydodecamethylene dodecamide.
Claim 4
Dependent Claim
23 words
The composition of claim 2 wherein the cationic dye modifier has the formula ##STR3## where Y is H, Li, Na, K or Cs.
Claim 5
Dependent Claim
28 words
The composition of claim 3 wherein from 1 to 2 weight percent of the cationic dye modifier is present as based on the weight of the first polyamide.
Claim 6
Dependent Claim
14 words
The composition of claim 4 wherein the cationic dye modifier has the formula ##STR4##
Claim 7
Dependent Claim
16 words
The composition of claim 5 wherein the cationic dye modifier-containing polymer is based on polyhexamethylene adipamide.
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein the high carbon polyamide is polyhexamethylene dodecamide.
Claim 9
Dependent Claim
12 words
The composition of claim 6 wherein the high carbon polyamide is poly-ω-undecalactam.
Claim 10
Dependent Claim
9 words
A fiber made from the composition of claim 1.
Claim 11
Dependent Claim
10 words
A shaped article injection-molded from the composition of claim 1.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |