Curable resin compositions of cyanate esters
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsMorio Gaku, Kazuhiro Suzuki, Kazuyuki Nakamichi
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Abstract
A curable resin composition comprising (a) a cyanate ester component selected from the group consisting of polyfunctional aromatic cyanate ester monomers having at least 2 cyanate groups bonded to their aromatic ring, prepolymers of the cyanate esters and prepolymers of the cyanate ester monomers and amines, and (b) a bismaleimide component selected from the group consisting of bismaleimides, bismaleimide prepolymers and prepolymers of the bismaleimides and amines; The weight ratio of the component (a) to (b) being 1:99 to 99:1.
Claims11
A curable resin composition comprising:
- (a) a cyanate ester component selected from the group consisting of:
- (i) polyfunctional aromatic cyanate ester monomers having the formula:
- R--O--C.tbd.N).sub.n
- wherein n is at least 2 and not more than 5 and R is an aromatic organic group, the cyanate groups being bonded to an aromatic ring of said aromatic organic group,
- (ii) homoprepolymers of (i) and
- (iii) coprepolymers of (i) and an amine, said amine being a diamine of the formula H.sub.2 N -- R.sup.2 -- NH.sub.2, wherein R.sup.2 is a divalent aromatic or alicyclic organic group, or a member selected from the group consisting of hexamethylenetetramine, polyethyleneimine, polyamino styrene, polyvinyl imidazole, triethylene diamine, 2-methylimidazole, 2-undecyclimidazole, 2-heptadecylimidazole, 2-phenylimidazole, 2-ethyl-4-methylimidazole, 1-benzyl-2-methylimidazole, 1-propyl-2-methylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-undecylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-guanaminoethyl-2-methylimidazole, and adducts formed between these imidazoles and trimellitic acid and
- (b) a bismaleimide component selected from the group consisting of (i) bismaleimides, (ii) bismaleimide homoprepolymers and (iii) bismaleimide coprepolymers of (i) and amines as above-defined,
- the weight ratio of component (a) to (b) being 1:99 to 99:1.
The curable resin composition of claim 1 which further contains an amine as defined in claim 10 as component (d) in an amount of up to 10% by weight based on the total weight of the components (a), (b) and (d).
Dependencies are inferred from the claim text.