Nil shrink unsaturated polyester resin composition
Abstract
Abstract A NIL SHRINK OR LOW PROFILE UNSATURTED POLYESTER RESIN COMPOSITION HAS BEEN FORMED BY BLENDING (A) 5-20% BY WEIGHT OF A SATURATED POLYESTER RESIN PRODUCED BY THE REACTION OF AN ALCOHOL COMPONENT CONTAINING 20-80 MOL PERCENT OF NEOPENTYL GLYCOL, AND AN ACID COMPONENT CONTAINING 70-95 MOL PERCENT TEREPHTHALIC ACID AND/OR ISOPHTHALIC ACID, (B) 25-60% BY WEIGHT OFAN UNSATURATED POLYESTER RESIN CONTAINING A DOUBLE BOND EQUIVALENCY OF 142-165, PRODUCED BY THE REACTION OF AN ACID COMPONENT CONTAINING MALEIC ACID, MALEIC ACI ANHYDRIDE AND/OR FUMARIC ACID, AND AN ALCOHOL COMPONENT, AND (C) 60-30% BY WEIGHT OF AN UNSATURATED MONOMER COPOLYMERIZABLE WITH THE ABOVE-MENTIONED UNSATURATED POLYESTER RESIN (B). THE SATURATED POLYESTER RESIN COMPOSITION IS CHARACTERIZED BY NIL SHRINK (E.G., LOW EXTENT OF VOLUME SHRINKAGE DURING CURNG), GOOD DIMENSIONAL STABILITY, HIGH DIMENSIONAL ACCURACY, CRACK AND CRAZE RESISTANCE AD GOOD ELECTRICAL PROPERTIES OVER VARYING TEMPERATURES.
Inventors
- 👤 M Wada
- 👤 H Enoki
- 👤 K Kumagai
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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