Patent US4018731A successfully refreshed from Google Patents.
US4018731A
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High impact polyamides
Assignee: Foster Grant Co Inc
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Filing: 1975-06-12
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Granted: 1977-04-19
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Expires: 1995-06-12
Abstract
Abstract A high impact polyamide resin is prepared by interpolymerizing with polyamide forming monomers a minor amount of an approximately equi-molar mixture of a low molecular weight diolefin polymer, and a dimerized fat acid or acid derivative, said diolefin polymer and dimerized fat acid or derivative having terminal amide-forming functional groups of each end of the polymer chain.
Inventors
- 👤 Willard M. Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:05
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
A polyamide composition comprising the interpolymerization product of a polyamide-forming monomer or mixture of monomers selected from the group consisting of: a. a lactam b. an amino carboxylic acid c. a mixture of a divalent carboxylic acid and a divalent diamine d. a mixture of at least two of a, b and c, and from about 1 to 20% by weight of said polyamide composition of an approximately equi molar mixture of a diolefin polymer having an average molecular weight within the range of about 1,000 to 20,000 and a dimerized fat acid or fat acid derivative having from 16 to 48 carbon atoms, each of said diolefin polymer and fat acid or fat acid derivative having amide-forming functional groups at each terminal position in the molecular chain.
Claim 2
Dependent Claim
128 words
A polyamide composition comprising the interpolymerization product of a polyamide-forming monomer or mixture of monomers selected from the group consisting of: a. a lactam b. an amino carboxylic acid c. a mixture of a divalent carboxylic acid and a divalent diamine d. a mixture of at least two of a, b and c, and from about 1 to 20% by weight of said polyamide composition of an approximately equi molar mixture of a diolefin polymer having an average molecular weight within the range of about 1,000 to 20,000 and a dimerized fat acid or fat acid derivative having from 16 to 48 carbon atoms, each of said diolefin polymer and fat acid or fat acid derivative having amide-forming functional groups at each terminal position in the molecular chain.
Claim 3
Dependent Claim
38 words
The composition of claim 1 wherein said diolefin polymer is a carboxy terminated conjugated diene having from 4 to 12 carbon atoms per monomer molecule and having a molecular weight within the range of about 1000 to 10,000.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein said conjugated diene is polybutadiene.
Claim 5
Dependent Claim
31 words
The composition of claim 3 wherein said fat acid or fat acid derivative is a distilled diamine having 36 carbon atoms derived from a dimerized mixture of oleic and linoleic acids.
Claim 6
Dependent Claim
31 words
The composition of claim 4 wherein said mixture of diolefin polymer and fat acid diamine is present at a level of about 5 to 15% by weight of said polyamide composition.
Claim 7
Dependent Claim
44 words
The composition of claim 2 wherein said mixture of said diolefin polymer and said dimerized fat acid comprises the ammonium salt of a carboxy terminated polybutadiene and a distilled diamine having 36 carbon atoms derived from a dimerized mixture of oleic and linoleic acids.
Claim 8
Dependent Claim
12 words
The composition of claim 6 wherein said polyamide forming monomer is caprolactam.
Claim 9
Dependent Claim
24 words
The composition of claim 7 wherein said ammonium salt is present at a level of about 5 to 15% by weight of the composition.
Claim 10
Dependent Claim
18 words
The composition of claim 6 wherein said polyamide forming mixture of monomers comprises adipic acid and hexamethylene diamine.
References Cited (Backward Citations)
US3671478A
Cited
US3645932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |