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US 5,853,645 AGranted
Low pressure molding compositions
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsRobert Lawrence Seats, Kenneth Earl Atkins, Carroll Glenn Reid
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Abstract
Improved low pressure molding compositions are disclosed which comprise an unsaturated thermosetting resin, an olefinically unsaturated monomer copolymerizable with the thermosetting resin, a viscosity reducing additive, a thermoplastic additive and a thickener comprising one or more alkaline earth metal oxides or hydroxides which can provide the molding compositions with viscosities of less than 25 MMcps after aging.
Claims9
A process for molding an article comprising:
- (A) forming a molding composition comprising:
- (i) an unsaturated thermosetting resin;
- (ii) an olefinically unsaturated monomer which is copolymerizable with said unsaturated thermosetting resins;
- (iii) a thermoplastic additive having an Acid Number of from 4 to 8;
- and
- (iv) a thickener which comprises one or more alkaline earth metal oxides or hydroxides in an amount effective to provide the molding composition with a Molding Viscosity of less than 25 MMcps:
- (B) aging the molding composition for at least one day;
- and
- (C) molding the aged molding composition at an effective pressure, temperature and time to form said molded article.
6 more elements
Dependencies are inferred from the claim text.