Epoxy hardening agents

Details Epoxy hardening agents Epoxy hardening agents

1990-02-28

1991-07-16

Nielsen, Earl

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523417, 528103, 528111, 528361, 528407, 564325, 564505, C08G 5950, C08L 6300

Patent

active

050326295

ABSTRACT:
Novel hardening agents for epoxy compounds which are produced by reaction of polyalkylene, polyether amines having a mean molecular weight of 148 to 5,000 with di and/or polyepoxy compounds to a preliminary product, the ratio of the hydrogen atoms possibly remaining after reaction with monoepoxy compounds and bound to nitrogen and which are capable of reaction with epoxide groups, to epoxide groups of diepoxy compounds or polyepoxy compounds in the range of 1:1.4 to 6, and reaction of this preliminary product with a primary or secondary amine, the employed amine or amine mixture being used in an amount such that the ratio of epoxide groups capable of reaction to hydrogen atoms attached to nitrogen is 1:2 to 10.

REFERENCES:
patent: 4423170 (1983-12-01), Waddill
patent: 4608405 (1986-08-01), De Gooyer
patent: 4810535 (1989-03-01), McCollum et al.
patent: 4835241 (1989-05-01), Waddill
patent: 4886867 (1989-12-01), Lin et al.
patent: 4940770 (1990-07-01), Speranza et al.

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