Method for producing rigid resin molds
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United States of America Patent
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Apr 26, 1988
Issued Date -
N/A
app pub date -
Mar 25, 1987
filing date -
Apr 17, 1985
priority date (Note) -
Expired
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Abstract
A method for producing a rigid resin mold for preparing plastic moldings which comprises: (1) preparing a composition (I) consisting essentially of (A) a cyanate ester resin composition, and (B-1) a metallic substance which does not substantially accelerate gelation of the cyanate ester resin composition (A), (2) preparing a composition (II) consisting essentially of (C) epoxy resin, and (B-2) a metallic substance which accelerates gelation of the cyanate ester resin composition (A) and does not substantially accelerate gelation of the epoxy resin (C) at temperatures below or equal to 100.degree. C., (3) mixing composition (I) of step (1) and composition (II) of step (2) to form composition (III), (4) casting composition (III) of step (3) into a mold (5) and gelling the cast resin.
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