US3936426A
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Amorphous, optically clear polyamide from a bis(4-aminocyclohexyl)methane and a phenylindan dicarboxylic acid
Assignee: Phillips Petroleum Co
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Filing: 1974-07-25
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Granted: 1976-02-03
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Expires: 1994-07-25
Abstract
Abstract Substantially amorphous, optically clear polyamides are produced from a bis(4-aminocyclohexyl)methane or methyl derivative thereof and a phenylindanedicarboxylic acid or alkyl derivative thereof. Copolyamides having desirable processing properties are produced by polymerizing the above monomers and at least one straight chain dicarboxylic acid as an additional monomer. The resulting polymers are useful as fibers, molding resins, coatings, adhesives, and the like.
Inventors
- 👤 Robert W. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:29
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
An amorphous, optically clear solid polyamide consisting essentially of the polymeric condensation product of a. at least one bis(4-aminocyclohexyl)methane or a methyl derivative thereof of the formula ##SPC3## wherein each R is hydrogen or a methyl radical, and b. at least one phenylindanedicarboxylic acid or an alkyl derivative thereof of the formula ##SPC4## wherein each R' is hydrogen or an alkyl radical having 1-3 carbon atoms.
Claim 2
Dependent Claim
66 words
An amorphous, optically clear solid polyamide consisting essentially of the polymeric condensation product of a. at least one bis(4-aminocyclohexyl)methane or a methyl derivative thereof of the formula ##SPC3## wherein each R is hydrogen or a methyl radical, and b. at least one phenylindanedicarboxylic acid or an alkyl derivative thereof of the formula ##SPC4## wherein each R' is hydrogen or an alkyl radical having 1-3 carbon atoms.
Claim 3
Dependent Claim
13 words
The polyamide of claim 1 wherein a. is bis(4-aminocyclohexyl)methane, and b. is 1,1,3-trimethyl-5-carboxy-3-(p-carboxyphenyl)indane.
Claim 4
Dependent Claim
15 words
A polyamide according to claim 1 which contains a filler therein as a reinforcement element.
Claim 5
Dependent Claim
10 words
A film formed from a polyamide according to claim 1.
Claim 6
Dependent Claim
10 words
A fiber composed of a polyamide according to claim 1.
Claim 7
Dependent Claim
13 words
A solution of a polyamide according to claim 1 in a solvent therefor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |