Epoxy resin compositions (case B) containing cumene-maleic anhyd

Details Epoxy resin compositions (case B) containing cumene-maleic anhyd Epoxy resin compositions (case B) containing cumene-maleic anhyd

1978-02-21

1979-06-12

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

26034674, 264331, 528 93, 528112, 528365, C08G 5916, C08G 5918, C08G 5968

Patent

active

041580907

ABSTRACT:
A new composition capable of being cured to a solid resin highly resistant to boiling acetone which comprises: (a) a 1,2-epoxy resin containing on the average more than one 1,2-epoxy group per molecule; (b) a residue remaining from the process wherein cumene (C) is reacted with maleic anhydride (MA) in the presence of (that is, in contact with) zinc chloride to obtain a reaction product containing dimethylbenzyl succinic anhydride (DMBSA), 5-phenyl-5-methylhexane-1,2,3,4-tetracarboxylic acid dianhydride (PMTD) and addition products of C and MA containing more than two anhydride groups per molecule (AP) and wherein a sufficient amount of said DMBSA is removed from said reaction product to give a residue containing a maximum of 25 weight percent DMBSA; and (c) an accelerator.

REFERENCES:
patent: 2692270 (1954-10-01), Beavers
patent: 3297723 (1967-01-01), Selwitz
patent: 3409638 (1968-11-01), Selwitz
patent: 3523143 (1970-08-01), Kwong
patent: 3709840 (1973-01-01), Dehoff
Handbook of Epoxy Resins, Lee et al., 11-10, 11-11, 1968.

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