Patent US3435935A successfully refreshed from Google Patents.
Patent US4046748A successfully refreshed from Google Patents.
US4046748A
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Polymers of terpene-maleic anhydride adducts with aliphatic diamines
Assignee: Kraton Chemical LLC
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Filing: 1976-04-19
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Granted: 1977-09-06
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Expires: 1996-04-19
Abstract
Abstract There is provided a process for preparing the reaction product of maleic anhydride with a non-conjugated monocyclic terpene in the presence of controlled amounts of iodine to attain a mixture of more than 15% di-adduct and the balance of said mixture being mono-adducts.
Inventors
- 👤 Robert William Schluenz
- 👤 Curry Beach Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:24
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A resinous terpene maleimide prepared by reacting in equimolar amounts of aliphatic diamine and a mixture prepared by reacting at temperatures between 140° C. and 200° C. substantially equimolar amounts of (a) a non-conjugated terpene or mixed non-conjugated terpenes and (b) maleic acid anhydride in the presence of from 0.002% to 0.03% iodine, based on the weight of the terpene, and recovering a mixture of less than 85% mono-adduct and more than 15% di-adduct of terpene-maleic adducts.
Claim 2
Dependent Claim
77 words
A resinous terpene maleimide prepared by reacting in equimolar amounts of aliphatic diamine and a mixture prepared by reacting at temperatures between 140° C. and 200° C. substantially equimolar amounts of (a) a non-conjugated terpene or mixed non-conjugated terpenes and (b) maleic acid anhydride in the presence of from 0.002% to 0.03% iodine, based on the weight of the terpene, and recovering a mixture of less than 85% mono-adduct and more than 15% di-adduct of terpene-maleic adducts.
Claim 3
Dependent Claim
12 words
The product of claim 1 wherein the aliphatic diamine is ethylene diamine.
References Cited (Backward Citations)
US2582235A
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US3043789A
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US3074915A
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US3544495A
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US3528950A
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US3732188A
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US3868348A
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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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |