High-modulus, flexible urethane coating and method of preparatio

Details High-modulus, flexible urethane coating and method of preparatio High-modulus, flexible urethane coating and method of preparatio

1984-01-31

1985-05-28

Cockeram, Herbert S.

Coating processes

Application to opposite sides of sheet, web, or strip

521902, 521126, 521128, 521129, 4283084, 4284228, 4284231, 4284233, 427244, 427421, 4273935, 4273855, 528 54, C08G 1814, C08G 1820, B05D 100, B05D 105

Patent

active

045200424

ABSTRACT:
A high-modulus, solid urethane spray coating is prepared by spraying onto a substrate equal volumes of an A-side and a B-side mixture together, the A side comprising 100 parts of a prepolymer prepared by reacting a polyether triol with a low-functionality MDI, and the B side comprising from about 5 to 40 parts of a butane diol and 60 to 95 parts of a polyether triol, and a catalyst system which comprises a tetravalent tin catalyst in combination with an acid-blocked amine catalyst.

REFERENCES:
patent: 3769244 (1973-10-01), Hashimoto et al.
patent: 3822223 (1974-07-01), Gemeinhardt et al.
patent: 3862150 (1975-01-01), Bechara et al.
patent: 3931387 (1976-01-01), Hostettler
patent: 4134994 (1979-01-01), Bechara et al.
patent: 4136241 (1979-01-01), Ammann
patent: 4419461 (1983-12-01), Arbir et al.
patent: 4456696 (1984-06-01), Arbir et al.
Union Carbide Tech. Information Bulletin; "One-Step Urethane Foams", Feb. 1959 (5 pages).

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