Process for the preparation of epoxy resins with concurrent addi

Details Process for the preparation of epoxy resins with concurrent addi Process for the preparation of epoxy resins with concurrent addi

1992-10-13

1994-01-11

Krass, Frederick

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

Synthetic resins

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

528 88, 528 89, 528 90, 528 91, 528 92, 528 93, 528 94, 528 95, 549517, C08G 6528, C08G 5906

Patent

active

052782603

ABSTRACT:
A process for the preparation of epoxy resins having a specific reproducible content of .alpha.-glycol groups, which process comprises adding at least 0.0085 mol of glycidol or glycidol precursor compound per hydroxy-equivalent of a phenolic compound A which contains 2, 3 or 4 phenolic hydroxyl groups during the reaction of said phenolic compound A with an epihalohydrin which is unsubstituted or substituted in 2- or 3-position by C.sub.1 -C.sub.4 alkyl. The products may be used for surface protection.

REFERENCES:
patent: 2558949 (1945-09-01), Greenlee
patent: 4215210 (1980-07-01), Okayama et al.
patent: 4465722 (1984-08-01), Fiaux et al.
H. Lee & K. Neville, Handbook of Epoxy Resins, 1982, Resins 5-39.

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