US4468505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition
Assignee: EIDP Inc
•
Filing: 1982-08-18
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Granted: 1984-08-28
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Expires: 2002-08-18
Abstract
Abstract Certain poly[hexamethylene adipamide]-poly[poly-(oxyethylene) adipamide] copolymers which provide soil release to nylon fabrics can be applied from solution directly to a threadline without heat-setting. Aqueous alcoholic solutions of the copolymers are preferred for such application.
Inventors
- 👤 Michael W. Bowen
- 👤 Robert G. Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/59
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A polymeric composition consisting essentially of a poly[hexamethylene adipamide]-poly[poly-(oxyethylene) adipamide] copolymer that is soluble at room temperature at 1% by weight concentration in a solvent composed of equal parts by volume of water and ethanol and wherein the molecular weight of the poly[poly(oxyethylene) adipamide] grouping calculated as poly(oxyethylene)diamine is between about 300 and 1200, the weight fraction of poly(hexamethylene adipamide) calculated as nylon 6--6 salt is between 18 and 37, and said copolymer composition falls within the area bounded by XY, YZ and ZX of the FIGURE.
Claim 2
Dependent Claim
87 words
A polymeric composition consisting essentially of a poly[hexamethylene adipamide]-poly[poly-(oxyethylene) adipamide] copolymer that is soluble at room temperature at 1% by weight concentration in a solvent composed of equal parts by volume of water and ethanol and wherein the molecular weight of the poly[poly(oxyethylene) adipamide] grouping calculated as poly(oxyethylene)diamine is between about 300 and 1200, the weight fraction of poly(hexamethylene adipamide) calculated as nylon 6--6 salt is between 18 and 37, and said copolymer composition falls within the area bounded by XY, YZ and ZX of the FIGURE.
Claim 3
Dependent Claim
42 words
The copolymer of claim 1 wherein the molecular weight of the poly[poly(oxyethylene) adipamide] grouping is calculated as poly(oxyethylene) diamine is between about 600 and 900 and the weight fraction of poly(hexamethylene adipamide) calculated as nylon 6--6 salt lies between 19 and 30.
Claim 4
Dependent Claim
18 words
The copolymer of claim 1 wherein the amino groups are attached to the poly(oxyethylene) grouping through oxypropylene groups.
References Cited (Backward Citations)
US3190718A
Cited
GB1108811A
Cited
GB1108812A
Cited
US3473956A
Cited
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US3455734A
Cited
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Cited
US3639502A
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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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |