Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1992-07-13
1993-07-06
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, 528272, 528327, C08G 6300, C08G 6306, C08G 6366, C08G 6502
Patent
active
052255220
ABSTRACT:
A multiply-branched aliphatic-aromatic polyester and a method for producing that polymer. The method comprises condensing Z.sup.1 and Z.sup.2 groups of a branching reactant having the general formula Z.sup.1 --Ar--(Z.sup.2)j. In this formula, j is 2 or 3 and Ar is an aryl or heteroaryl group having from 1 to 3, solitary or linked or fused, substituted or unsubstituted, five or six membered rings. One of Z.sup.1 and Z.sup.2 is a group having the ##STR1## general formula in which R.sup.1 is selected from the group consisting of hydroxy, chloro, bromo, monovalent alkoxide having from 1 to about 6 carbons, and --O--(CH.sub.2).sub.d --OH, wherein d is an integer from 1 to 3; and the other is a group having the general formula ##STR2## in which R.sup.2 is a divalent alkyl group having from 1 to about 6 carbon atoms, and g is an integer from 0 to about 100.
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Turner S. Richard
Voit Brigitte I.
Eastman Kodak Company
Kight III John
Mosley T.
Walker Robert Luke
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