EP0230631A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Intermediate for composite material
Assignee: Mitsubishi Chemical Corp
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Filing: 1986-12-19
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Granted: —
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Expires: 2006-12-19
Abstract
Abstract An intermediate for a composite material is described, comprising a reinforcing material impregnated with a resin composition which comprises: (A) 100 parts by weight of a mixture of (I) a polyfunctional maleimide and (II) a polyfunctional cyanate or an oligomer thereof, or a preliminary reaction product of (I) and (II); (B) from 5 to 100 parts by weight of an epoxy compound; and (C) from 5 to 50 parts by weight of a polyester compound.
Inventors
- 👤 Hisashi C/O Mitsubishi Rayon Co. Ltd. Tada
- 👤 Takayuki C/O Mitsubishi Rayon Co. Ltd. Iseki
- 👤 Akira C/O Mitsubishi Rayon Co. Ltd. Agata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 20:17
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; C08L79/085; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08L63/00; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/2246; Y10T442/2615; Y10T442/2631; Y10T442/2721
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
73 words
An intermediate for a composite material comprising a reinforcing material impregnated with a resin composition which comprises: (A) 100 parts by weight of a mixture of (I) a polyfunctional maleimide and (II) a polyfunctional cyanate or an oligomer thereof, or a preliminary reaction product of (I) and (II); (B) from 5 to 100 parts by weight of an epoxy compound; and (C) from 5 to 50 parts by weight of a polyester compound.
Claim 2
Dependent Claim
73 words
An intermediate for a composite material comprising a reinforcing material impregnated with a resin composition which comprises: (A) 100 parts by weight of a mixture of (I) a polyfunctional maleimide and (II) a polyfunctional cyanate or an oligomer thereof, or a preliminary reaction product of (I) and (II); (B) from 5 to 100 parts by weight of an epoxy compound; and (C) from 5 to 50 parts by weight of a polyester compound.
Claim 3
Dependent Claim
21 words
An intermediate for a composite material as claimed in claim 1, wherein the polyfunctional maleimide (I) is a bismaleimide of diaminodiphenylmethane.
Claim 4
Dependent Claim
18 words
An intermediate for a composite material as claimed in claim 1, wherein the polyfunctional cyanate (II) is 2,2-bis(4-cyanatophenyl)propane.
Claim 5
Dependent Claim
81 words
An intermediate for a composite material as claimed in claim 1, wherein the epoxy compound (B) is selected from the group consisting of a diglycidyl ether of bisphenol A or bisphenol F, a preliminary reaction product of a diglycidyl ether of bisphenol A or F and a diaminodiphenylsulfone having an epoxy to NH ratio of 4/1, and a preliminary reaction product of Epikote 828 (trade mark of Shell International Chemical Corp.) and 4,4ʹ-diaminodiphenylsulfone having an epoxy to NH ratio of 4/1.
Claim 6
Dependent Claim
34 words
An intermediate for a composite material as claimed in claim 1 wherein the polyester compound (C) is represented by formula (V) wherein Ar is a phenylene group; and R₁ is a divalent aliphatic group.
Claim 7
Dependent Claim
47 words
An intermediate for a composite material as claimed in claim 1, wherein the polyester compound (C) is the reaction product of terephthalic acid and neopentyl glycol that has a softening point of not higher than 100°C and a number average molecular weight of from 500 to 10,000.
Claim 8
Dependent Claim
42 words
An intermediate for a composite material as claimed in claim 1, wherein the polyester compound (C) is represented by formula (VI) wherein Ar is a phenylene group; R₁ is a divalent aliphatic group; and R₂ is a divalent aromatic or aliphatic group.
Claim 9
Dependent Claim
58 words
An intermediate for a composite material as claimed in claim 1, wherein the polyester compound (C) is the reaction product of terephthalic acid and neopentyl glycol which has the terminals thereof blocked with trimellitic anhydride, said reaction product having a softening point of not higher than 100°C and a number average molecular weight of from 500 to 10,000.
Claim 10
Dependent Claim
24 words
An intermediate for a composite material as claimed in claim 1 which contains from 0.2 to 3 wt% of a fine silicon oxide powder.
Claim 11
Dependent Claim
27 words
An intermediate for a composite material as claimed in claim 1, wherein the weight ratio of (I) to (II) in component (A) ranges from 5/95 to 15/85.
Claim 12
Dependent Claim
34 words
An intermediate for a composite material as claimed in claim 1 which contains from 0.2 to 3 wt% of a catalyst selected from among a boron trifluoride monoethylamine complex, dicumyl peroxide, and zinc octylate.
References Cited (Backward Citations)
No citation records indexed.
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