US4533723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-esters of polyisobutylenesuccinic acid, their synthesis and preparations containing these compounds which can be transformed by radiation into an adhesive
Assignee: Evonik Operations GmbH
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Filing: 1984-06-28
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Granted: 1985-08-06
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Expires: 2004-06-28
Abstract
Abstract Semi-esters of polyisobutylenesuccinic acid having the formula ##STR1## in which R 1 is a polyisobutylene radical with a molecular weight of 100 to 20,000, R 2 and R 3 are different from one another and one of these two radicals is a hydrogen radical and the other one of the groups ##STR2## in which R 4 , R 5 is a hydrogen or methyl radical, and R 6 is a methyl or ethyl radical. The invention furthermore relates to processes for synthesizing these compounds as well as to preparations which can be converted by radiation into adhesives.
Inventors
- 👤 Christian Weitemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:51
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/14; C09; C09J; C09J4/00; C08F2810/00; C08F2810/20; C08F2810/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
Semi-esters of polyisobutylenesuccinic acid having the formula ##STR5## in which R 1 is a polyisobutylene radical with a molecular weight of 100 to 20,000, R 2 and R 3 are different from one another and one of these two radicals is a hydrogen radical and the other one a group, selected from the group consisting of ##STR6## in which R 4 and R 5 are a hydrogen or methyl radical, and R 6 is a methyl or ethyl radical.
Claim 2
Dependent Claim
79 words
Semi-esters of polyisobutylenesuccinic acid having the formula ##STR5## in which R 1 is a polyisobutylene radical with a molecular weight of 100 to 20,000, R 2 and R 3 are different from one another and one of these two radicals is a hydrogen radical and the other one a group, selected from the group consisting of ##STR6## in which R 4 and R 5 are a hydrogen or methyl radical, and R 6 is a methyl or ethyl radical.
Claim 3
Dependent Claim
30 words
A process for the synthesis of compound (I) wherein polyisobutylenesuccinic anhydride is reacted with equimolar amounts of the alcohol R 2 OH or R 3 OH under conventional esterification conditions.
Claim 4
Dependent Claim
30 words
A process for the synthesis of compound (I) wherein polyisobutylenesuccinic anhydride is reacted with equimolar amounts of the alcohol R 2 OH or R 3 OH under conventional esterification conditions.
Claim 5
Dependent Claim
10 words
The process of claim 2 wherein a solvent is present.
Claim 6
Dependent Claim
44 words
A composition comprising 30 to 100 weight percent of compound (I), 0 to 70 weight percent radiation-polymerizable monomers or oligomers, 0 to 15 weight percent initiators, and 0 to 50 weight percent of conventional additives, said composition being convertible to an adhesive by irradiation.
Claim 7
Dependent Claim
44 words
A composition comprising 30 to 100 weight percent of compound (I), 0 to 70 weight percent radiation-polymerizable monomers or oligomers, 0 to 15 weight percent initiators, and 0 to 50 weight percent of conventional additives, said composition being convertible to an adhesive by irradiation.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |