Novel hardening agents

Details Novel hardening agents Novel hardening agents

1990-06-07

1991-07-23

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 45, 528367, 528369, 560158, C08G 5950

Patent

active

050344951

ABSTRACT:
A hardening agent for epoxy prepared by reacting A) a hydroxy containing ketimino compound with B) a diisocyanate compound with one isocyanate group blocked, reacting the resulting adduct with C) a polyether amine and hydrolysis of the reaction product, reactants A), B) and C) being in approximately stoichiometric amounts resulting in flexible hardened products of good resistance to chemicals and aging.

REFERENCES:
patent: 4115360 (1978-09-01), Schulze et al.
patent: 4115361 (1978-09-01), Schulze et al.
patent: 4115446 (1978-09-01), Schulze
patent: 4122069 (1978-10-01), Meyer
patent: 4139524 (1979-02-01), Waddill
patent: 4178426 (1979-12-01), Waddill
patent: 4187367 (1980-02-01), Waddill

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