US5206309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat stable film composition comprising polyepsiloncaprolactam
Assignee: Honeywell International Inc
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Filing: 1991-03-06
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Granted: 1993-04-27
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Expires: 2011-03-06
Abstract
Abstract The present invention provides a heat stable film composition comprising polyepsiloncaprolactam and poly(epsiloncaprolactam-hexamethylene adipamide) copolymer which finds particular use in applications wherein the film is subjected heat for a prolonged period of time, such as in an oven or an autoclave.
Inventors
- 👤 Carl E. Altman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:01
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L77/00; C08L77/02; C08J2377/00; C08J2377/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
22 words
A film comprising: polyepsiloncaprolactam and poly(epsiloncaprolactam-hexamethylene adipamide) copolymer, wherein said copolymer has polyepsiloncaprolactam segments comprising between 10% to 35% of said copolymer.
Claim 2
Dependent Claim
22 words
A film comprising: polyepsiloncaprolactam and poly(epsiloncaprolactam-hexamethylene adipamide) copolymer, wherein said copolymer has polyepsiloncaprolactam segments comprising between 10% to 35% of said copolymer.
Claim 3
Dependent Claim
27 words
A film according to claim 1, wherein said polyepsiloncaprolactam has a number average molecular weight as measured in formic acid in the range of 15,000 to 40,000.
Claim 4
Dependent Claim
27 words
A film according to claim 2, wherein the polyepsiloncaprolactam has a number average molecular weight as measured in formic acid in the range of 25,000 to 35,000.
Claim 5
Dependent Claim
15 words
A film according to claim 1, wherein said poly(epsiloncaprolactam-hexamethylene adipamide) copolymer is a random copolymer.
Claim 6
Dependent Claim
15 words
A film according to claim 1, wherein said poly(epsiloncaprolactam-hexamethylene adipamide) copolymer is a block copolymer.
Claim 7
Dependent Claim
12 words
A film according to claim 1 which further comprises a coloring agent.
Claim 8
Dependent Claim
26 words
A film according to claim 5, wherein said coloring agent is selected from the group consisting of inorganic pigments, metal oxides, organic pigments and organic dyes.
Claim 9
Dependent Claim
39 words
A film according to claim 1 which further comprises an additive selected from the group consisting of lubricants, mold release agents, dyes, pigments, flame-retardants, fibrous fillers, particulate fillers, organic reinforcing agents, inorganic reinforcing agents, nucleators and ultraviolet light stabilizers.
Claim 10
Dependent Claim
20 words
A film according to claim 1, wherein said copolymer has polyepsiloncaprolactam segments comprising between 20% to 30% of said copolymer.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |