Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1984-04-30
1985-09-03
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 37, 524 38, 524 39, C09D 314, C08L 104, C08L 126
Patent
active
045393494
ABSTRACT:
The present invention relates to novel unsaturated polyester compositions and to a process for the preparation thereof. The composition comprises an unsaturated polyester, a reactive solvent for the unsaturated polyester, and at least about 0.5% by weight of a carboxylated cellulose ester. The unsaturated polyester comprises the reaction product of a diacid component which comprises at least about 50% by weight of an ethylenically unsaturated dicarboxylic acid and a diol component. The process of the present invention comprises reacting a diacid component with a diol component so as to form an unsaturated polyester resin, dissolving the unsaturated polyester resin in a solvating quantity of a reactive solvent, the resulting solution further comprising at least about 0.5% by weight of a carboxylated cellulose ester, and curing the solution in the substantial absence of additional initiator so as to form a substantially clear, solid unsaturated polyester composition.
REFERENCES:
patent: 3711432 (1973-01-01), Shah
patent: 3862064 (1975-01-01), Fry
patent: 3878137 (1975-04-01), Hess et al.
patent: 3940350 (1976-02-01), Hess et al.
patent: 4034764 (1977-07-01), Rainer et al.
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Blount William W.
Robinette William M.
Cotey David E.
Eastman Kodak Company
Griffin Ronald W.
Spurrell Donald W.
Thomsen J. Frederick
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