US5981008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer blends
Assignee: EIDP Inc
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Filing: 1998-10-08
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Granted: 1999-11-09
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Expires: 2018-10-08
Abstract
Abstract Halide polymers such as polyvinyl chloride and polyamides melt blended at a polyamide to halide polymer weight ratio of about 1.5:1 to about 2:1 with an effective amount of a carboxyl and/or CO-functional ethylene polymer to compatibilize the halide polymer and polyamide exhibit superior chemical resistance.
Inventors
- 👤 George Henry Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:56
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L27/08; C08L77/00; C08L77/02; C08L77/06; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1341; Y10T428/1352; Y10T428/31504; Y10T428/31725
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A construction comprised of a coating of a composition comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 2
Dependent Claim
93 words
A construction comprised of a coating of a composition comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 3
Dependent Claim
95 words
A construction comprised of a sheeting membrane made from a compositio comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 4
Dependent Claim
95 words
A construction comprised of a sheeting membrane made from a compositio comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 5
Dependent Claim
95 words
A construction comprised of a pipe liner made from a compositiong comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 6
Dependent Claim
95 words
A construction comprised of a pipe liner made from a compositiong comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 7
Dependent Claim
90 words
A container made from a composition comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
Claim 8
Dependent Claim
90 words
A container made from a composition comprising vinyl or vinylidene halide polymer, thermoplastic polyamide and ethylene polymer having carbon monoxide and/or carboxyl functionality to compatibilize the halide polymer with the polyamide upon melt blending, wherein the polyamide is melt processible at a temperature of less than about 220° C. and is present in a weight amount of about 1.5 to about 2 times the weight amount of the halide polymer, and the ethylene polymer is present in an effective amount up to about 80 weight percent of the halide polymer.
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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) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-08 | 2011-05-10 | 2011-11-09 | $7700.00 | Window Closed / Lapsed |