Advanced polyamine adduct epoxy resin curing agent for use in tw

Details Advanced polyamine adduct epoxy resin curing agent for use in tw Advanced polyamine adduct epoxy resin curing agent for use in tw

1995-08-14

1996-04-16

Krass, Frederick

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525526, 528103, C08K 320, C08L 6300

Patent

active

055083242

ABSTRACT:
An epoxy resin curing composition comprising the product of the reaction of (A) a polyamine containing primary amine functionality and (B) a polyepoxide having an EEW of from 130 to 450 in a ratio of moles of polyamine per equivalents of polyepoxide sufficient to provide intermediate (C) which comprises an adduct of about two moles of polyamine and one mole polyepoxide, intermediate (C) being then reacted with an amount of a polyepoxy resin (D) sufficient to react with about 10-40% of the primary amines in intermediate (C) to provide adduct (E), and adduct (E) being end capped with a monoepoxide composition comprising an aromatic glycidyl ether or an alkyl substituted aromatic glycidyl ether, or both. The composition may be salted with a volatile acid such as acetic acid and blended with water to afford an aqueous composition containing 20 to 65% nonvolatiles.

REFERENCES:
patent: 4134864 (1979-01-01), Belanger
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patent: 4246148 (1981-01-01), Shimp et al.
patent: 4539347 (1985-09-01), DeGooyer et al.
patent: 4608405 (1986-08-01), DeGooyer
patent: 5221700 (1993-06-01), Gilbert et al.
patent: 5246984 (1993-09-01), Darwen et al.

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