Low temperature curable epoxy compositions containing urea...

Details Low temperature curable epoxy compositions containing urea... Low temperature curable epoxy compositions containing urea...

2009-09-11

2011-12-13

Feely, Michael J (Department: 1761)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C528S061000, C528S068000, C525S528000

Reexamination Certificate

active

08076395

ABSTRACT:
A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising a urea compound which is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula:where R1, R2, R3, R4and R5independently represent hydrogen, methyl or ethyl, n and m independently are integers from 1 to 6 and; X is an integer from 1 to 10.

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