Sag resistant, unfilled, low viscosity urethane structural adhes

Details Sag resistant, unfilled, low viscosity urethane structural adhes Sag resistant, unfilled, low viscosity urethane structural adhes

1990-01-16

1991-02-19

Kight, III, John

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...

528 44, 528 64, 521137, C08G 1832

Patent

active

049945408

ABSTRACT:
A two component urethane structural adhesive formulation was developed containing a multi-functional aromatic amine terminated polyether as part of the curative component. The adhesive of the present invention is prepared by mixing and reacting the following low viscosity components:
Component A, a curative comprising a polyol and an aromatic amine terminated polyether containing two or more primary amine groups and having a molecular weight of from 250 to about 10,000 and Component B, comprising a polyisocyanate. The adhesive of the invention is characterized by its improved sag resistance, its heavy body which is obtained without resort to included fillers or to prepolymerization of the components and by the relatively low viscosity (under about 15,000 cps) of its components which permits easy bulk handling.

REFERENCES:
patent: 3714127 (1973-01-01), Fabris et al.
patent: 3979364 (1976-09-01), Rowton
patent: 4336298 (1982-06-01), Schwarz
patent: 4444976 (1984-04-01), Rabito
patent: 4552934 (1985-11-01), Rabito et al.
patent: 4595445 (1986-06-01), Hombach et al.
patent: 4686242 (1987-08-01), Turner et al.
patent: 4743672 (1988-05-01), Goel

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