Modified epoxy resins produced from glycidyl esters and a tin-co

Details Modified epoxy resins produced from glycidyl esters and a tin-co Modified epoxy resins produced from glycidyl esters and a tin-co

1990-03-23

1992-03-24

Kight, III, John

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

Synthetic resins

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

523403, 523404, 525481, 525488, C08G 5914, C08F28300

Patent

active

050989669

ABSTRACT:
An aromatic polyglycidyl polyether resin having an average of 1.5 to 4.5 epoxy groups and 0.1 to 18 primary or secondary --OR groups per molecule, wherein from 5 to 95% of the --OR groups have the general formula --O--CH.sub.2 --CHOH--CH.sub.2 --O--C(O)--R', in which R' is a branched C.sub.4-17 alkyl group, the remainder of the --OR groups being hydroxyl groups, and a process for preparing the same wherein an epoxy compound (A) is reacted with one or more hydroxyl groups contained in a polyglycidyl polyether (B) of a polyhydric aromatic compound in the presence of an etherification catalyst (C), in which (A) is a glycidylester of a C.sub.5-18 branched aliphatic monocarboxylic acid, (B) is a polyglycidyl polyether having on average of from 1.5 to 4.5 epoxy groups and of form 0.1 to 18 primary or secondary hydroxyl groups per molecule, and (C) is a tin, zinc or iron compound.

REFERENCES:
patent: 4246089 (1981-01-01), Hazan
patent: 4755583 (1988-07-01), Scholten
patent: 4865704 (1989-09-01), Saatweber et al.
patent: 4920182 (1990-04-01), Manser et al.

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