US3842045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amorphous polyamides from bis(4-aminocyclohexyl)methane and a mixture of straight chain dicarboxylic acids
Assignee: Phillips Petroleum Co
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Filing: 1972-07-05
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Granted: 1974-10-15
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Expires: 1992-07-05
Abstract
Abstract 1. A SUBSTANTIALLY AMORPHOUS, OPTICALLY CLEAR SOLID POLYAMIDE RESIN CONSISTING ESSENTIALLY OF THE POLYMERIC CONDENSATION REACTION PRODUCT OF (A) BIS(4-AMINOCYCLOHEXYL)METHANE OF 40-54 PERCENT TRANS,TRANS CONFIGURATION AND (B) A MIXTURE OF 50-70 MOLE PERCENT DODECANEDIOIC ACID AND 50-30 MOLE PERCENT SUBERIC ACID OR A MIXTURE OF 50-70 MOLE PERCENT DODECANEDIOCI ACID AND 50-30 MOLE PERCENT AZELAIC ACID.
Inventors
- 👤 R Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:30
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A SUBSTANTIALLY AMORPHOUS, OPTICALLY CLEAR SOLID POLYAMIDE RESIN CONSISTING ESSENTIALLY OF THE POLYMERIC CONDENSATION REACTION PRODUCT OF (A) BIS(4-AMINOCYCLOHEXYL)METHANE OF 40-54 PERCENT TRANS,TRANS CONFIGURATION AND (B) A MIXTURE OF 50-70 MOLE PERCENT DODECANEDIOIC ACID AND 50-30 MOLE PERCENT SUBERIC ACID OR A MIXTURE OF 50-70 MOLE PERCENT DODECANEDIOCI ACID AND 50-30 MOLE PERCENT AZELAIC ACID.
Claim 2
Dependent Claim
55 words
A SUBSTANTIALLY AMORPHOUS, OPTICALLY CLEAR SOLID POLYAMIDE RESIN CONSISTING ESSENTIALLY OF THE POLYMERIC CONDENSATION REACTION PRODUCT OF (A) BIS(4-AMINOCYCLOHEXYL)METHANE OF 40-54 PERCENT TRANS,TRANS CONFIGURATION AND (B) A MIXTURE OF 50-70 MOLE PERCENT DODECANEDIOIC ACID AND 50-30 MOLE PERCENT SUBERIC ACID OR A MIXTURE OF 50-70 MOLE PERCENT DODECANEDIOCI ACID AND 50-30 MOLE PERCENT AZELAIC ACID.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |