US4654383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant epoxy resins
Assignee: Resolution Performance Products LLC
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Filing: 1985-11-27
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Granted: 1987-03-31
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Expires: 2005-11-27
Abstract
Abstract A composition is provided comprising an epoxy resin, a curing agent for the epoxy resin, and a halogenated aromatic vinyl monomer. The composition exhibits sufficiently low viscosity to be suitable for fiber-reinforced composites applications, high Tg and flame retardancy.
Inventors
- 👤 Larry S. Corley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/16; C08F212/21; C08F283/00; C08F283/10; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
80 words
A composition comprising (a) an epoxy resin, (b) an effective amount of a curing agent for the epoxy resin, and (c) from about 5 to about 70 weight percent, based on the weight of the composition, of a halogenated vinyl aromatic monomer which has the formula ##STR3## where X is halogen, R is --CH═CH 2 , alkyl, aryl or alkaryl and at least one R is --CH═CH 2 , m is 1 to 5 and n is 1 or 2.
Claim 2
Dependent Claim
80 words
A composition comprising (a) an epoxy resin, (b) an effective amount of a curing agent for the epoxy resin, and (c) from about 5 to about 70 weight percent, based on the weight of the composition, of a halogenated vinyl aromatic monomer which has the formula ##STR3## where X is halogen, R is --CH═CH 2 , alkyl, aryl or alkaryl and at least one R is --CH═CH 2 , m is 1 to 5 and n is 1 or 2.
Claim 3
Dependent Claim
14 words
The composition of claim 1 in which the halogenated vinyl aromatic monomer is dibromostyrene.
Claim 4
Dependent Claim
16 words
The composition of claim 1 in which the epoxy resin is a diglycidyl ether of bisphenol-A.
Claim 5
Dependent Claim
25 words
The composition of claim 2 in which the halogenated vinyl aromatic monomer is present in an amount of about 15 to about 50 weight percent.
Claim 6
Dependent Claim
16 words
The composition of claim 2 which further comprises an effective amount of a free radical initiator.
Claim 7
Dependent Claim
28 words
The composition of claim 1 in which the curing agent is selected from the group consisting of aliphatic amines, aromatic amines, cyclic anhydrides, imidazoles and BF 3 complexes.
Claim 8
Dependent Claim
32 words
The composition of claim 1 in which the curing agent is present in an amount of from about 1 to about 300 weight percent, based on the weight of the epoxy resin.
Claim 9
Dependent Claim
33 words
The composition of claim 1 in which the curing agent is selected from the group consisting of methylenedianiline, 2,4-bis(p-aminobenzyl)aniline, trimellitic anhydride, 2-ethyl-4-methylimidazole, 1,2-diaminocyclohexane, and BF 3 .C 2 H 5 NH 2 .
Claim 10
Dependent Claim
12 words
The composition of claim 1 which further comprises a nonhalogenated vinyl monomer.
Claim 11
Dependent Claim
23 words
The composition of claim 9 in which the nonhalogenated vinyl monomer is selected from the group consisting of styrene, divinylbenzene and trimethylolpropane trimethacrylate.
Claim 12
Dependent Claim
33 words
The composition of claim 9 in which the nonhalogenated vinyl monomer is present in an amount of from about 0 to about 50 weight percent, based on the weight of the epoxy resin.
Claim 13
Dependent Claim
16 words
The composition of claim 1 in which the epoxy resin is a liquid at room temperature.
Claim 14
Dependent Claim
32 words
The composition of claim 5 in which the free radical initiator is present in an amount of about 0.001 to about 10 weight percent, based on the weight of the epoxy resin.
Claim 15
Dependent Claim
29 words
The composition of claim 5 in which the free radical initiator is selected from the group consisting of dialkyl peroxides, tertiary alkyl hydroperoxides and alkyl esters of peroxycarboxylic acids.
Claim 16
Dependent Claim
12 words
The composition of claim 1 which further comprises a fibrous reinforcing material.
Claim 17
Dependent Claim
25 words
The composition of claim 15 in which the fibrous reinforcing material is selected from the group consisting of chopped glass, glass fibers and carbon fibers.
Claim 18
Dependent Claim
12 words
An article of manufacture formed from the cured composition of claim 1.
Claim 19
Dependent Claim
12 words
An article of manufacture formed from the cured composition of claim 15.
Claim 20
Dependent Claim
11 words
An electrical laminate formed from the cured composition of claim 15.
Claim 21
Dependent Claim
13 words
A prepreg comprising a fibrous reinforcing material and the composition of claim 15.
Claim 22
Independent Claim
90 words
A method for improving the flame retardancy of an epoxy resin composition comprising an epoxy resin and a curing agent for the epoxy resin, the method comprising adding to the composition from about 5 to about 70 weight percent, based on the weight of the composition, of a halogenated aromatic vinyl monomer which has the formula ##STR4## where X is halogen, R is --CH═CH 2 , alkyl, aryl or alkaryl and at least one R is --CH═CH 2 , m is 1 to 5 and n is 1 or 2.
Claim 23
Independent Claim
90 words
A method for improving the flame retardancy of an epoxy resin composition comprising an epoxy resin and a curing agent for the epoxy resin, the method comprising adding to the composition from about 5 to about 70 weight percent, based on the weight of the composition, of a halogenated aromatic vinyl monomer which has the formula ##STR4## where X is halogen, R is --CH═CH 2 , alkyl, aryl or alkaryl and at least one R is --CH═CH 2 , m is 1 to 5 and n is 1 or 2.
Claim 24
Dependent Claim
14 words
The method of claim 21 in which the halogenated aromatic vinyl monomer is dibromostyrene.
Claim 25
Dependent Claim
22 words
The method of claim 22 in which the dibromostyrene is present in an amount of about 15 to about 50 weight percent.
Claim 26
Independent Claim
86 words
A method for lowering the viscosity of an epoxy resin laminating composition comprising an epoxy resin and a curing agent, the method comprising adding to the composition from about 5 to about 70 weight percent, based on the weight of the composition, of a halogenated aromatic vinyl monomer which has the formula ##STR5## where X is halogen, R is --CH═CH 2 , alkyl, aryl or alkaryl and at least one R is --CH═CH 2 , m is 1 to 5 and n is 1 or 2.
Claim 27
Independent Claim
86 words
A method for lowering the viscosity of an epoxy resin laminating composition comprising an epoxy resin and a curing agent, the method comprising adding to the composition from about 5 to about 70 weight percent, based on the weight of the composition, of a halogenated aromatic vinyl monomer which has the formula ##STR5## where X is halogen, R is --CH═CH 2 , alkyl, aryl or alkaryl and at least one R is --CH═CH 2 , m is 1 to 5 and n is 1 or 2.
Claim 28
Dependent Claim
14 words
The method of claim 24 in which the halogenated aromatic vinyl monomer is dibromostyrene.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |