Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-05-06
1983-08-02
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525375, 525379, 5253313, 5253328, 5253329, 5253331, C08F 830
Patent
active
043967450
ABSTRACT:
A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of the cyanate esters, coprepolymers of the cyanate esters and an amine and mixtures thereof, (b) at least one rubber, which is liquid at room temperature or elastic, selected from the group consisting of styrene butadiene rubber, isoprene rubber, polychloroprene rubber, butyl rubber, acrylic rubber, natural rubbers, a preliminary reaction product of an epoxy compound and isoprene rubber, a preliminary reaction product of a natural rubber and an epoxy compound, rubbers obtained by introducing acryloyl or methacryloyl group into isoprene, and acid anhydride moiety-containing rubbers obtained by adding double bond of an unsaturated acid anhydride to isoprene and mixtures thereof and optionally (c) at least one compound selected from the group consisting of polyfunctional maleimides, prepolymers of the maleimides or coprepolymers of the maleimides and an amine is disclosed.
REFERENCES:
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patent: 3562214 (1971-02-01), Kubens et al.
patent: 3740348 (1973-06-01), Grigat et al.
patent: 3755402 (1973-08-01), Grigat et al.
patent: 4110364 (1978-08-01), Gaku et al.
Lipman Bernard
Mitsubishi Gas Chemical Company Inc.
Schofer Joseph L.
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