Novolac based epoxy resin curing agents for use in aqueous syste

Details Novolac based epoxy resin curing agents for use in aqueous syste Novolac based epoxy resin curing agents for use in aqueous syste

1984-09-20

1985-09-03

Griffin, Ronald W.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523416, 525484, 525504, C08G 5950, C08L 6302

Patent

active

045393478

ABSTRACT:
The instant invention is an epoxy resin curing agent based upon an epoxy novolac containing, on the average, between about 3 and about 7.5 epoxy groups per molecule, in which substantially all of the epoxide groups are reacted with a polyamine wherein each primary amine hydrogen in the resulting reaction product is further reacted with a monoepoxide or a monocarboxylic acid. The resulting epoxy resin curing agent may be used in a water based system for curing epoxide resins. The curing agent is rendered water soluble or water dispersible by salting with a conventional volatile monocarboxylic acid such as acetic, formic or propionic acid.

REFERENCES:
patent: 3374186 (1968-03-01), Steden et al.
patent: 3957709 (1976-05-01), Holzrichter et al.
patent: 4093594 (1978-06-01), Anderson
patent: 4111900 (1978-09-01), Noetzel et al.
patent: 4166900 (1979-09-01), Heimsch et al.
patent: 4246148 (1981-01-01), Shimp et al.
patent: 4316003 (1982-02-01), Dante et al.

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