Process for preparing higher molecular weight epoxy resins

Details Process for preparing higher molecular weight epoxy resins Process for preparing higher molecular weight epoxy resins

1984-07-26

1985-07-09

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528110, 528361, C08G 5906, C08G 5916

Patent

active

045283567

ABSTRACT:
The present invention is directed to an improved process for preparing higher molecular weight polyepoxides from lower molecular weight polyepoxides which comprises reacting (1) a lower molecular weight polyepoxide, (2) a polyhydric compound, (3) an etherification catalyst and (4) dimethylol propionic acid.

REFERENCES:
patent: 3749758 (1973-07-01), Gannon
patent: 3792112 (1974-02-01), Gannon et al.
Gannon et al., "Resins from Epoxides and Dimethylolproprionic Acid", Chem. Abst. 78, 137439c, (1973).

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