US4015062A
Expired / Lapsed
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Dioxazolone group-containing polymers
Assignee: BASF SE
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Filing: 1975-09-29
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Granted: 1977-03-29
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Expires: 1995-09-29
Abstract
Abstract Polymers in which the side chains contain 1,3,4-dioxazol-2-one groups, and the manufacture of said polymers. The novel polymers have the reactivity of 1,3,4-dioxazol-2-one and may also contain other reactive groups. They may be used for the production of shaped articles, coatings and adhesives.
Inventors
- 👤 Heinz Eilingsfeld
- 👤 Herbert Naarmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:56
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
A polymer containing units of the formula: ##STR7## wherein: R 1 is hydrogen or methyl; R 2 is H; and X is OCH 2 , ##STR8## where n is an integer of from 1 to 50 and R is hydrogen, alkyl, cycloalkyl or aryl.
Claim 2
Dependent Claim
44 words
A polymer containing units of the formula: ##STR7## wherein: R 1 is hydrogen or methyl; R 2 is H; and X is OCH 2 , ##STR8## where n is an integer of from 1 to 50 and R is hydrogen, alkyl, cycloalkyl or aryl.
Claim 3
Dependent Claim
21 words
Polymers as claimed in claim 1, wherein R 1 and R 2 are both hydrogen and X is OCH 2 .
Claim 4
Dependent Claim
19 words
Polymers as claimed in claim 1, wherein R 1 and R 2 are both hydrogen and X is ##STR9##
Claim 5
Dependent Claim
21 words
Polymers as claimed in claim 1, wherein R 1 is CH 3 , R 2 is H and X is ##STR10##
Claim 6
Dependent Claim
19 words
Polymers as claimed in claim 1, wherein R 1 and R 2 are both hydrogen and X is ##STR11##
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |