US4379914A
Expired / Lapsed
US
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Polycaprolactone polymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-12-21
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Granted: 1983-04-12
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Expires: 2001-12-21
Abstract
Abstract The instant invention relates to a process for the formation of polylactone polymers which are terminated on one end by a tertiary amine group and on the other end by a hydroxyl group. An ε-caprolactone is reacted with a diamine in the presence of a catalyst, wherein one of the amine groups of the diamine is a tertiary amine and the other amine group is primary or secondary.
Inventors
- 👤 Robert D. Lundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:12
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G63/68; C08G63/685; C08G63/6852; C08G63/78; C08G63/82; C08G63/823
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
50 words
A polycaprolactone polymer having the formula: ##STR5## wherein R 1 or R 2 is an alkyl, cycloalkyl or aryl group, R 3 , R 4 and R 5 is a hydrogen or alkyl, cycloalkyl, or aryl group, and m equals 1 to 20 and n equals 1 to about 500.
Claim 2
Dependent Claim
50 words
A polycaprolactone polymer having the formula: ##STR5## wherein R 1 or R 2 is an alkyl, cycloalkyl or aryl group, R 3 , R 4 and R 5 is a hydrogen or alkyl, cycloalkyl, or aryl group, and m equals 1 to 20 and n equals 1 to about 500.
Claim 3
Dependent Claim
26 words
A polycaprolactone polymer according to claim 1, wherein said polymer has a melting point of about 15° C. to about 55° C. and is water insoluble.
Claim 4
Dependent Claim
37 words
A polycaprolactone polymer according to claim 1 wherein R 1 and R 2 are an alkyl group and R 3 , R 4 and R 5 are hydrogen and m equals an integer from 1 to 20.
Claim 5
Dependent Claim
29 words
A polycaprolactone polymer according to claim 1 wherein either R 1 or R 2 is a methyl group and R 3 , R 4 and R 5 are hydrogen.
Claim 6
Dependent Claim
28 words
A polycaprolactone polymer according to claim 1, wherein R 1 and R 2 are both methyl groups and R 3 , R 4 and R 5 are hydrogen.
Claim 7
Dependent Claim
28 words
A polycaprolactone polymer according to claim 1, wherein R 1 , R 2 , and R 3 are methyl groups and R 4 and R 5 are hydrogen.
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) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |