Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1994-12-13
1996-11-26
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528288, 528332, 528335, 528361, C08G 6704
Patent
active
055786952
ABSTRACT:
The invention provides a crosslinking agent comprising a compound having at least two noncyclic acid anhydride groups and represented by the following formula ##STR1## wherein R is a monovalent hydrocarbon group having 2 to 50 carbon atoms, R' is a bivalent hydrocarbon group having 2 to 50 carbon atoms, the hydrocarbon groups R and R' containing or not containing an ether linkage, urethane linkage or ester linkage, and n is an integer of 1 to 500.
The invention also provides a curable composition including (A) at least one resin selected from the group consisting of (i) a resin having at least one epoxy group and at least one hydroxyl group in the molecule, (ii) a resin mixture of a resin having at least two epoxy groups in the molecule and a resin having at least two hydroxyl groups in the molecule, and (iii) a resin having at least two epoxy groups in the molecule, and (B) the above-mentioned crosslinking agent.
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Lee et al, Handbook of Epoxy Resins, 12-2-2-4, (1967) McGraw-Hill (New York).
Kansai Paint Company, Ltd.
Zitomer Fred
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