Storage stable one component urethanes and method for using same

Details Storage stable one component urethanes and method for using same Storage stable one component urethanes and method for using same

1981-11-23

1983-04-26

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C08G 1810

Patent

active

043813887

ABSTRACT:
A storage stable, weather resistant, one-component air cured urethane composition. The composition comprises a moisture activated curing agent and a polyisocyanate prepolymer. The moisture activated curing agent comprising an oxazolidine ring. The polyisocyanate prepolymer comprises at least two unreacted isocyanate groups and is the reaction product of a polyester polyol, a low molecular weight polyol having at least three hydroxy groups and isophorone diisocyanate. The polyester polyol and low molecular weight polyol are reacted with the isocyanate at an equivalent weight ratio of polyester polyol to low molecular weight polyol of from 0.25:1 to 5:1.
The invention also comprises the method for coating a surface with the composition and the resulting coated article.

REFERENCES:
patent: 3743626 (1973-07-01), Emmons
patent: 4024117 (1977-05-01), Emmons
patent: 4032686 (1977-06-01), Emmons
Saunders et al., Polyurethanes, Part II, Interscience, NY, 1964, p. 11.

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