Preparation of unsaturated polyester resins

Details Preparation of unsaturated polyester resins Preparation of unsaturated polyester resins

1997-04-22

1998-06-09

Zemel, Irina S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 48, 525285, 525338, 528272, C08L 900, C08L 6706

Patent

active

057635315

ABSTRACT:
Preparation of storage stable, polybutadiene containing, unsaturated polyester resins by heating a mixture containing an unsaturated hydroxyl terminated polybutadiene resin, a saturated anhydride or dibasic acid, an unsaturated anhydride or dibasic acid, a polymerization inhibitor and, optionally, a saturated glycol, while removing water as it is formed, the molar ratio of the saturated anhydride or acid to the unsaturated anhydride or acid being at least equal to 2.

REFERENCES:
patent: 3705208 (1972-12-01), Nakamura et al.

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