Primary-tertiary diamines mixed with polyamines as epoxy resin h

Details Primary-tertiary diamines mixed with polyamines as epoxy resin h Primary-tertiary diamines mixed with polyamines as epoxy resin h

1995-09-20

1997-11-18

Sellers, Robert E.

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

Synthetic resins

From carboxylic acid or derivative thereof

525420, 5254205, 525423, 525504, 525523, 528120, 528335, 528342, C08G 6934, C08L 6302, C08L 6304

Patent

active

056889054

ABSTRACT:
An amine hardener composition for curing epoxy resin based coatings and related products comprising (A) from 5 to 75% of a diamine which possesses a vapor pressure less than about 133 Pascals at 20.degree. C., contains both a primary and a tertiary amine and corresponds to either of the structures: ##STR1## where R.sub.1 and R.sub.2 are independently C.sub.1 -C.sub.8 alkyl; X is --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --, or --CH.sub.2 --O--CH.sub.2 --; and n is 2-6, (B) from 5 to 95% of a polyamide, amidoamine, Mannich base or cycloaliphatic amine curing agent; and (C) from 0 to 50% of other active hydrogen containing dismines or polyamines. Coatings based on the composition can be formulated at up to 100% solids, and have an excellent combination of pot life and dry speed.

REFERENCES:
patent: 3008909 (1961-11-01), Ernst
patent: 3947395 (1976-03-01), Ogata et al.
patent: 5385990 (1995-01-01), Abbey et al.
Chemistry and Technology of Epoxy Resins, Ellis, Blackie Academic & Professional, New York, NY, pp. 40-41, 1993.
Kroupa, J. Chem Prum. (1976), 26(9), 477-80.
C. W. Jennings, J. Adhes. (1972), 4(1), 25-38.

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