Patent US4356300A successfully refreshed from Google Patents.
US4356300A
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Polyetherpolyamide copolymers
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1980-02-21
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Granted: 1982-10-26
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Expires: 2000-02-21
Abstract
Abstract Polyetherpolyamide copolymers are disclosed which comprise the product of the polycondensation of a diamine with the equivalent amount of a dicarboxylic acid and a common polyamide forming component, wherein the diamine contains a polyether block containing at least 3 ether oxygen atoms separated from each other by a carbon chain selected from the group consisting of linear carbon chains of at least 3 carbon atoms, branched carbon chains of at least 2 carbon atoms between the ether oxygen atoms and mixtures thereof and a common polyamide block which is mainly a homopolyamide. The present compositions exhibit improved flexibility and low temperature properties and may be processed by injection molding and extrusion techniques.
Inventors
- 👤 Walter Isler
- 👤 Eduard Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:16
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A thermoplastically processable, flexible polyether polyamide composition comprising the poly-condensation product of a diamine having a polyether block taken from the class consisting of H.sub.2 N--[--(CH.sub.2).sub.n --O--].sub.m --(CH.sub.2).sub.q --NH.sub.2 (I) and H.sub.2 N--(CH.sub.2).sub.3 --O--[--(CH.sub.2).sub.4 --O--].sub.p --(CH.sub.2).sub.3 --NH.sub.2 (II) wherein n and q are individually at least 3, m is 3 to 30, and p is 2 to 30, and a dicarboxylic acid, whereby said polyether block is present in an amount of about 8 to about 60% by weight of said composition, said composition further comprising at least one polyamide constituent taken from the class consisting of caprolactam, laurolactam, and aminoundecanoic acid, the sum of all constituents being 100%.
Claim 2
Dependent Claim
109 words
A thermoplastically processable, flexible polyether polyamide composition comprising the poly-condensation product of a diamine having a polyether block taken from the class consisting of H.sub.2 N--[--(CH.sub.2).sub.n --O--].sub.m --(CH.sub.2).sub.q --NH.sub.2 (I) and H.sub.2 N--(CH.sub.2).sub.3 --O--[--(CH.sub.2).sub.4 --O--].sub.p --(CH.sub.2).sub.3 --NH.sub.2 (II) wherein n and q are individually at least 3, m is 3 to 30, and p is 2 to 30, and a dicarboxylic acid, whereby said polyether block is present in an amount of about 8 to about 60% by weight of said composition, said composition further comprising at least one polyamide constituent taken from the class consisting of caprolactam, laurolactam, and aminoundecanoic acid, the sum of all constituents being 100%.
Claim 3
Dependent Claim
14 words
A composition of claim 1 wherein n and q are individually 3 to 30.
Claim 4
Dependent Claim
10 words
The composition of claim 1 wherein said diamine is (II).
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein said diamine is (I).
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein said dicarboxylic acid comprises a dimerised fatty acid having 36 carbon atoms.
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein said dicarboxylic acid comprises a compound of the formula ##STR2##
Claim 8
Dependent Claim
39 words
The composition of claim 2 wherein said ether oxygen atoms are separated from each other by a branched carbon chain selected from the group consisting of branched aliphatic chains, branched cyclo aliphatic chains, branched araliphatic chains and mixtures thereof.
Claim 9
Dependent Claim
26 words
The composition of claim 2 wherein the ether oxygen atoms are separated from each other by linear carbon chains which have 3 or 4 carbon atoms.
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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) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |