US4667003A
Expired / Lapsed
US
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Crosslinked polymers prepared from allyl or methallyl-bicyclo[2,2,1]hept-5-ene-2,3-dicarboxylic acid imides and bisimides
Assignee: Novartis Corp
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Filing: 1985-01-16
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Granted: 1987-05-19
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Expires: 2005-01-16
Abstract
Abstract Crosslinked polymers with excellent physical properties are prepared by heating at 180 DEG -300 DEG C. the imides of the formula I <IMAGE> (I) in which E is allyl or methallyl, R is hydrogen, alkyl, alkenyl, cycloalkyl, aryl or benzyl when n is 1, and R is alkylene or arylene when n is 2. The polymers can be used, in particular, for the preparation of glass fiber-reinforced and carbon fibre-reinforced plastics and as electrical insulating materials.
Inventors
- 👤 Alfred Renner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:10
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/126; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/72; C07D209/76; C08F; C08F12/00; C08F12/02; C08F12/32; C08F22/00; C08F22/36; C08F22/40; C08G73/125; C08G73/127
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A polymer, which is obtained by heating an imide of formula I ##STR14## in which E is allyl or methallyl, n is 1 or 2 and, when n is 1, R is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-6 atoms, cycloalkyl having 5-8 C atoms, phenyl, tolyl, xylyl or naphthyl, or benzyl or, when n is 2, R is --C m H 2m --, in which m is an integer of 2-20, m-phenylene, p-phenylene, 1,3-naphthylene, 1,4-naphthylene or 1,5-naphthylene or a group of the formula II ##STR15## in which T is methylene, isopropylidene, CO, O, S or SO 2 , at a temperature between 180° and 300° C. for 6 to 24 hours.
Claim 2
Dependent Claim
114 words
A polymer, which is obtained by heating an imide of formula I ##STR14## in which E is allyl or methallyl, n is 1 or 2 and, when n is 1, R is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-6 atoms, cycloalkyl having 5-8 C atoms, phenyl, tolyl, xylyl or naphthyl, or benzyl or, when n is 2, R is --C m H 2m --, in which m is an integer of 2-20, m-phenylene, p-phenylene, 1,3-naphthylene, 1,4-naphthylene or 1,5-naphthylene or a group of the formula II ##STR15## in which T is methylene, isopropylidene, CO, O, S or SO 2 , at a temperature between 180° and 300° C. for 6 to 24 hours.
Claim 3
Dependent Claim
16 words
A polymer according to claim 1 where in the imide of formula I E is allyl.
Claim 4
Dependent Claim
79 words
A polymer according to claim 1 where in the imide of formula I E is the allyl group and, when n is 1, R is hydrogen, alkyl having 1-8 C atoms, allyl, cyclohexyl, phenyl or benzyl, or, when n is 2, R is --(CH 2 ) m --, in which m is an integer of 2-12, m- or p-phenylene or a group of the formula II ##STR16## in which T is the methylene group, O or SO 2 .
Claim 5
Dependent Claim
38 words
A polymer according to claim 1 where in the imide of formula I E is the allyl group, n is the number 2 and R is --(CH 2 ) 2 --, --(CH 2 ) 6 -- or ##STR17##
Claim 6
Dependent Claim
14 words
A polymer according to claim 1 where the imide of formula I is ##STR18##
Claim 7
Dependent Claim
14 words
A polymer according to claim 1 where the imide of formula I is ##STR19##
Claim 8
Dependent Claim
14 words
A polymer according to claim 1 where the imide of formula I is ##STR20##
Claim 9
Dependent Claim
40 words
A polymer according to claim 1 which is obtained by heating an imide of formula I where E is allyl, n is 2 and R is ##STR21## at a temperature of 240° to 250° C. for 6 to 12 hours.
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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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |