Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1991-11-05
1993-03-23
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528167, 528173, 528205, 528206, 528208, 528327, C08G 6300
Patent
active
051965020
ABSTRACT:
An improved method for producing multiply-branched polyester comprising condensing a reactant having the general formula Z.sup.1 --Ar--(Z.sup.2).sub.j, wherein j is 2 or 3, Ar is an aryl or heteroaryl group having from 1 to 3, solitary or linked or fused, five or six membered rings, and one of Z.sup.1 and Z.sup.2 is a carboxyl group and the other is a group having the general formula ##STR1## wherein R is an alkyl group having from 1 to 3 carbon atoms, X is selected from the group consisting of fluoro and chloro and g is an integer from 0 to about 7.
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Nielsen Ralph B.
Turner S. Richard
Voit Brigitte I.
Eastman Kodak Company
Kight III John
Mosley T.
Walker Robert Luke
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