Bisphenol A epoxy resin mixtures with aromatic di-secondary amin

Details Bisphenol A epoxy resin mixtures with aromatic di-secondary amin Bisphenol A epoxy resin mixtures with aromatic di-secondary amin

1989-03-28

1990-03-27

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525504, 525526, C08L 6302, C08G 5950

Patent

active

049121790

ABSTRACT:
A new thermocurable composition is disclosed which comprises a Bisphenol A-type epoxy resin having a number average molecular weight of 650-1300, 10-40% by weight of the Bisphenol A-type epoxy resin having an epoxy equivalent of 180-195; and a curing agent capable of cross-linking the epoxy resin. The curing agent is preferably a compound represented by the following general formula: ##STR1## wherein X is --CR.sub.1 R.sub.2 --, --CO--, --COO--, --SO.sub.2 --, --SO--, --S--, --O--, --NR.sub.1 --, --SiR.sub.1 R.sub.2 -- or --POR.sub.1 -- where R.sub.1 and R.sub.2 each stands for hydrogen, a lower alkyl or a phenyl; Y and Y' each stands for hydrogen, a lower alkyl or an electron attractive group; R is a lower alkyl; and m and n each is an integer of 1-4, or a mixture thereof with a primary amine, a phenolic compound or an acid anhydride.

REFERENCES:
patent: 3560388 (1971-02-01), Higashi
patent: 3957716 (1976-05-01), Weldy
patent: 4040993 (1977-06-01), Elbling et al.

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