US4673726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly(ester-imides) and poly(ester-imide-amides) of trimellitic anhydride and 4-(aminomethyl)cyclohexanemethanol
Assignee: Eastman Chemical Co
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Filing: 1986-01-13
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Granted: 1987-06-16
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Expires: 2006-01-13
Abstract
Abstract Polymer compositions containing repeating units from 0 to 95 mol percent of aromatic dicarboxylic acids containing 8 to 16 carbon atoms and having at least three carbon atoms between carboxyl groups or esters thereof, repeating units from 0 to 95 mol % 1,4-cyclohexanedimethanol, repeating units from 5 to 100 mol % trimellitic acid or anhydride, and repeating units from 5 to 100 mol % 4-(aminomethyl)cyclohexanemethanol, and wherein the mol % of the repeating units from the trimellitic acid or anhydride does not exceed the mol % of repeating units from the 4-(aminomethyl)cyclohexanemethanol.
Inventors
- 👤 Winston J. Jackson, Jr.
- 👤 John C. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:25
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
Polymer composition comprising 5 to 98 mol % of repeating units from trimellitic acid or anhydride, 5 to 98 mol % of repeating units from 4-(aminomethyl)cyclohexanemethanol, 2 to 95 mol % of repeating units from aromatic dicarboxylic acids or esters thereof containing 8 to 16 carbon atoms and having at least three carbon atoms between carboxyl groups, and 2 to 95 mol % of repeating units from 1,4-cyclohexanedimethanol and wherein the mol % of the repeating units from trimellitic acid or anhydride does not exceed the mol % of repeating units from the 4-(aminomethyl)cyclohexanemethanol.
Claim 2
Dependent Claim
94 words
Polymer composition comprising 5 to 98 mol % of repeating units from trimellitic acid or anhydride, 5 to 98 mol % of repeating units from 4-(aminomethyl)cyclohexanemethanol, 2 to 95 mol % of repeating units from aromatic dicarboxylic acids or esters thereof containing 8 to 16 carbon atoms and having at least three carbon atoms between carboxyl groups, and 2 to 95 mol % of repeating units from 1,4-cyclohexanedimethanol and wherein the mol % of the repeating units from trimellitic acid or anhydride does not exceed the mol % of repeating units from the 4-(aminomethyl)cyclohexanemethanol.
Claim 3
Dependent Claim
35 words
Polymer composition of claim 1 wherein the mol % of repeating units from the 4-(aminomethyl)cyclohexanemethanol is equal to or exceeds by up to 95 mol % the repeating units from the trimellitic acid or anhydride.
Claim 4
Dependent Claim
36 words
Polymer composition of claim 1 wherein up to 30 mol % of the repeating units from the 1,4-cyclohexanedimethanol are replaced with repeating units from at least one other aliphatic glycol containing 2 to 10 carbon atoms.
Claim 5
Dependent Claim
21 words
Polymer composition of claim 1 wherein at least 70 mol % of the repeating units from the 4-(aminomethyl)cyclohexanemethanol are from trans-4-(aminomethyl)cyclohexanemethanol.
References Cited (Backward Citations)
US4116941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |