US4604437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer from substituted, unsaturated, bicyclic imide
Assignee: Novartis Corp
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Filing: 1985-01-22
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Granted: 1986-08-05
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Expires: 2005-01-22
Abstract
Abstract Imides of the formula I ##STR1## in which E is allyl or methallyl, R is hydrogen, alkyl, alkenyl, cycloalkyl, aryl, benzyl, alkylene or arylene, and ni is 1 or 2, are intermediates for the preparation of crosslinked polymers having excellent physical properties. The polymers can be used, in particular, for the preparation of glass fibre-reinforced and carbon fibre-reinforced plastics and heat-resistant composite materials, and as electrical insulation materials and whirl-sintered powder paints.
Inventors
- 👤 Alfred Renner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/72; C07D209/76; C08; C08F; C08F22/00; C08F22/36; C08F22/40; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/121; C08G73/122; C08G73/125
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
110 words
A polymer obtained by heating an imide of formula I ##STR14## in which E is allyl or methallyl and n is 1 or 2 and, when n is 1, R is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-6 C atoms, cycloalkyl having 5-8 C atoms, aryl having 6-10 C atoms or benzyl, or when n is 2, R is --C m H 2m -- in which m is 2-20, arylene having 6-10 C atoms 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 60 hours.
Claim 2
Dependent Claim
110 words
A polymer obtained by heating an imide of formula I ##STR14## in which E is allyl or methallyl and n is 1 or 2 and, when n is 1, R is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-6 C atoms, cycloalkyl having 5-8 C atoms, aryl having 6-10 C atoms or benzyl, or when n is 2, R is --C m H 2m -- in which m is 2-20, arylene having 6-10 C atoms 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 60 hours.
Claim 3
Dependent Claim
18 words
A polymer according to claim 1 obtained by heating an imide of formula I wherein E is allyl.
Claim 4
Dependent Claim
63 words
A polymer according to claim 1 obtained by heating an imide of formula I in which, when n is 1, R is hydrogen, alkyl having 1-8 C atoms, cyclohexyl, allyl or phenyl, or, when n is 2, R is --(CH 2 ) 6 -- or a group of the formula II ##STR16## in which T is the methylene group or SO 2 .
Claim 5
Dependent Claim
30 words
A polymer according to claim 1 obtained by heating an imide of formula I in which n is the number 2 and R is --(CH 2 ) 6 --, ##STR17##
Claim 6
Dependent Claim
43 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is the allyl group and, when n is 1, R is allyl or, when n is 2, R is --(CH 2 ) 6 -- or ##STR18##
Claim 7
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 1 and R is hydrogen.
Claim 8
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 1 and R is allyl.
Claim 9
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 1 and R is 2-ethylhexyl.
Claim 10
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 1 and R is phenyl.
Claim 11
Dependent Claim
30 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 2 and R is --(CH 2 ) 6 --.
Claim 12
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 2 and R is ##STR19##
Claim 13
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is methallyl, n is 2 and R is ##STR20##
Claim 14
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is methallyl, n is 2 and R is ##STR21##
Claim 15
Dependent Claim
26 words
A polymer according to claim 1 obtained by heating an imide of formula I in which E is allyl, n is 1 and R is cyclohexyl.
Claim 16
Dependent Claim
41 words
A polymer according to claim 1, wherein an imide of the formula I in which n is the number 2 and R is --(CH 2 ) 6 --, ##STR22## is heated at 200° to 250° C. for 6 to 24 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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |