Method for producing rigid resin molds
US4740343A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1987 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Mar 25, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09118
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing a rigid resin mold for preparing plastic moldings which comprises: PA0 (1) preparing a composition (I) consisting essentially of PA1 (A) a cyanate ester resin composition, and PA1 (B-1) a metallic substance which does not substantially accelerate gelation of the cyanate ester resin composition (A), PA0 (2) preparing a composition (II) consisting essentially of PA1 (C) epoxy resin, and PA1 (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., PA0 (3) mixing composition (I) of step (1) and composition (II) of step (2) to form composition (III), PA0 (4) casting composition (III) of step (3) into a mold PA0 (5) and gelling the cast resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.