US4847335A
Expired / Lapsed
US
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Esters of allyl-bicyclo[2.2.1]hept-5-ene-2-carboxylic acid and polymers thereof
Assignee: Novartis Corp
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Filing: 1987-07-31
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Granted: 1989-07-11
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Expires: 2007-07-31
Abstract
Abstract Compounds of the formula I ##STR1## in which a is 1, 2 or 3, m is an integer from 2 to 20, R 1 , R 2 and R 3 independently of one another are hydrogen or methyl and R 4 is an m-valent radical of a polyol after removal of m hydroxyl groups, can be thermally reacted to give crosslinked polymers having outstanding physical properties. The polymers are suitable especially as casting resins, matrix resins, adhesives, encapsulating resins, insulating materials for electronics and electrical engineering and in surface protection.
Inventors
- 👤 Andreas Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; C; C08; C08F; C08F12/00; C08F12/02; C08F12/32; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3324
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
A compound of the formula I ##STR20## wherein R 1 , R 2 and R 3 independently of one another are hydrogen or methyl, a is 1, 2 or 3 and m is an integer from 2 to 20, and R 4 is an m-valent radical of an aliphatic polyol or a mononuclear or polynuclear cycloaliphatic or aromatic polyol or of a novolak after removal of m hydroxide groups, or is an alkylene glycol or polyalkylene glycol radical after removal of 2 hydroxyl groups, no more than one C--O bond being present per carbon atom in the radical R 4 .
Claim 2
Dependent Claim
101 words
A compound of the formula I ##STR20## wherein R 1 , R 2 and R 3 independently of one another are hydrogen or methyl, a is 1, 2 or 3 and m is an integer from 2 to 20, and R 4 is an m-valent radical of an aliphatic polyol or a mononuclear or polynuclear cycloaliphatic or aromatic polyol or of a novolak after removal of m hydroxide groups, or is an alkylene glycol or polyalkylene glycol radical after removal of 2 hydroxyl groups, no more than one C--O bond being present per carbon atom in the radical R 4 .
Claim 3
Dependent Claim
25 words
A compound of the formula I according to claim 1, wherein R 1 , R 2 and R 3 are hydrogen and a is 1.
Claim 4
Dependent Claim
24 words
A compound of the formula I according to claim 1, wherein R 4 is a radical of an aromatic polyol or of a novolak.
Claim 5
Dependent Claim
100 words
A compound of the formula I according to claim 1, wherein m is an integer from 2 to 5 and R 4 is an m-valent C 2 -C 20 -aliphatic, a mononuclear or polynuclear C 5 -C 20 -cycloaliphatic or a C 6 -C 20 -aromatic radical, a radical of the formula --CH.sub.2 CH.sub.2 [OCH.sub.2 CH.sub.2 ].sub.n or of the formula --CH.sub.2 CH.sub.2 CH.sub.2 [OCH.sub.2 CH.sub.2 CH.sub.2 ].sub.n with n being an integer from 1 to 10, or is an m-valent radical of the formula II ##STR21## in which T is methylene, isopropylidene, CO, O, S or SO 2 .
Claim 6
Dependent Claim
29 words
A compound of the formula I according to claim 1, wherein R 4 is an m-valent radical of a phenol or cresol novolak after removal of m hydroxyl groups.
Claim 7
Dependent Claim
51 words
A compound of the formula I according to claim 4, wherein m is 2 and R 4 is --CpH 2p -- with p being an integer from 2 to 15, a C 5 -C 12 -cycloaliphatic radical, a C 6 -C 12 -aromatic radical or a radical of the formula II.
Claim 8
Dependent Claim
33 words
A compound of the formula I according to claim 1, wherein R 4 is derived from a polyol selected from the group consisting of ##STR22## q being an integer from 3 to 20.
Claim 9
Dependent Claim
32 words
A compound of the formula I according to claim 1, wherein R 1 , R 2 and R 3 are hydrogen, a is 1, m is 2 and R 4 is ##STR23##
Claim 10
Dependent Claim
32 words
A compound of the formula I according to claim 1, wherein R 1 , R 2 and R 3 are hydrogen, a is 1, m is 2 and R 4 is m-phenylene.
Claim 11
Dependent Claim
49 words
A compound of the formula 1 according to claim 1, wherein R 1 , R 2 and R 3 are hydrogen, a is 1, m is an integer from 2 to 20 and R 4 is an m-valent radical of a cresol novolak after removal of m hydroxyl groups.
References Cited (Backward Citations)
US3105839A
Cited
US3287395A
Cited
US3658669A
Cited
US4515962A
Cited
US4667003A
Cited
US4579916A
Cited
US4587317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |