Patent US4099027A successfully refreshed from Google Patents.
Patent US4380026A successfully refreshed from Google Patents.
Patent US4579916A successfully refreshed from Google Patents.
US4579916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixtures containing an epoxide resin, an imide and a curing catalyst
Assignee: Novartis Corp
•
Filing: 1984-11-08
•
Granted: 1986-04-01
•
Expires: 2004-11-08
Abstract
Abstract Heat-curable mixtures, containing (a) an epoxide resin having on average more than one epoxide group in the molecule, (b) an allyl-substituted or methallyl-substituted imide of the formula I ##STR1## in which E is allyl or methallyl, G is hydrogen or methyl, n is 1 or 2, and R is hydrogen, alkyl, alkenyl, cycloalkyl, aryl, benzyl or arylene, and (c) a curing catalyst, have good storage stability and processability and produce moulded materials having high mechanical strength values and good resistance to heat.
Inventors
- 👤 Rolf Schmid
- 👤 Alfred Renner
- 👤 Werner Stauffer
- 👤 Michael Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:45
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D209/00; C07D209/56; C07D209/58; C07D209/72; C07D209/76; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/56; C07D249/00; C07D249/02; C07D249/08; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G59/68
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A heat-curable mixture which is stable on storage and contains (a) 5 to 95 parts by weight of an epoxide resin having on average more than one epoxide group in the molecule, (b) 95 to 5 parts by weight of an allyl-substituted or methallyl-substituted imide of the formula I ##STR13## in which E is allyl or methallyl, G is hydrogen or methyl and n is 1 or 2 and, if n is 1, R is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-6 C atoms, cycloalkyl having 5-8 C atoms, phenyl, tolyl, xylyl, hydroxyphenyl or naphthyl; or benzyl or, if n is 2, R is --C m H 2m -- in which m=2-20, m-phenylene, p-phenylene, 1,3-naphthylene, 1,4-naphthylene or 1,5-naphthylene or a group of the formula II ##STR14## in which T is methylene, isopropylidene, CO, O, S or SO 2 , and in which the total of (a) and (b) in the mixture is 100 parts by weight, and (c) 1 to 15 parts by weight, based on 100 parts by weight of the mixture of (a) and (b), of a curing catalyst.
Claim 2
Dependent Claim
183 words
A heat-curable mixture which is stable on storage and contains (a) 5 to 95 parts by weight of an epoxide resin having on average more than one epoxide group in the molecule, (b) 95 to 5 parts by weight of an allyl-substituted or methallyl-substituted imide of the formula I ##STR13## in which E is allyl or methallyl, G is hydrogen or methyl and n is 1 or 2 and, if n is 1, R is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-6 C atoms, cycloalkyl having 5-8 C atoms, phenyl, tolyl, xylyl, hydroxyphenyl or naphthyl; or benzyl or, if n is 2, R is --C m H 2m -- in which m=2-20, m-phenylene, p-phenylene, 1,3-naphthylene, 1,4-naphthylene or 1,5-naphthylene or a group of the formula II ##STR14## in which T is methylene, isopropylidene, CO, O, S or SO 2 , and in which the total of (a) and (b) in the mixture is 100 parts by weight, and (c) 1 to 15 parts by weight, based on 100 parts by weight of the mixture of (a) and (b), of a curing catalyst.
Claim 3
Dependent Claim
13 words
A mixture according to claim 1, wherein G in formula I is hydrogen.
Claim 4
Dependent Claim
44 words
A mixture according to either of claims 1 or 2, which contains 20 to 70 parts by weight of the epoxide resin (a), 80 to 30 parts by weight of the imide (b) and 3 to 10 parts by weight of the catalyst (c).
Claim 5
Dependent Claim
28 words
A mixture according to either of claims 1 or 2, which contains, as the epoxide resin (a), a polyglycidyl ether or a poly-(N-glycidyl) derivative of an aromatic amine.
Claim 6
Dependent Claim
24 words
A mixture according to either of claims 1 or 2, which contains, as the epoxide resin (a), a polyglycidyl ether of a polynuclear phenol.
Claim 7
Dependent Claim
81 words
A mixture according to claim 1, which contains an imide of the formula I in which E is allyl and G is hydrogen and, if n is 1, R is hydrogen, alkyl having 1-8 C atoms, allyl, cyclohexyl, phenyl, hydroxyphenyl or benzyl, or, if n is 2, R is --(CH 2 ) m -- in which m is 2-12, m-phenylene or p-phenylene or a group of the formula II in which T is the methylene group, O or SO 2 .
Claim 8
Dependent Claim
41 words
A mixture according to claim 1, which contains an imide of the formula I in which E is allyl, G is hydrogen, n is the number 2 and R is --(CH 2 ) 2 --, --(CH 2 ) 6 --, ##STR15##
Claim 9
Dependent Claim
17 words
A mixture according to claim 1, which contains, as the catalyst (c), imidazole or substituted derivatives thereof.
Claim 10
Dependent Claim
14 words
A mixture according to claim 1, containing, as the catalyst (c), an N-acyl-substituted imidazole.
Claim 11
Dependent Claim
18 words
The moulded material, coating or adhesive bond obtained by curing from the curable mixture according to claim 1.
Claim 12
Dependent Claim
10 words
A mixture according to claim 7 wherein R is ##STR16##
References Cited (Backward Citations)
US3105839A
Cited
US3429947A
Cited
US3651012A
Cited
US4127615A
Cited
US4130600A
Cited
US4460783A
Cited
US4436892A
Cited
US4515962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |