Cationic, advanced epoxy resin compositions from (1) diglycidyl

Details Cationic, advanced epoxy resin compositions from (1) diglycidyl Cationic, advanced epoxy resin compositions from (1) diglycidyl

1989-07-06

1990-12-11

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

2041817, 523415, 523416, 523417, 523424, 525523, 525528, 525533, 528103, 528104, C08G 5914, C08L 6300, C09D 544

Patent

active

049772023

ABSTRACT:
A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin an advanced epoxy resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which is essentially free of ether oxygen atoms, such as a diglycidyl ether of 1,4-butanediol, (2) a digylcidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A and (3) a dihydric phenol such as bisphenol A and optionally a capping agent such as p-nonylphenol.
Coating compositions suitable for electrodeposition are prepared from the product obtained by the process.

REFERENCES:
patent: 4698141 (1987-10-01), Anderson et al.
patent: 4868230 (1989-09-01), Rao et al.

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