Coating of synthetic surfaces with water-based coatings

Details Coating of synthetic surfaces with water-based coatings Coating of synthetic surfaces with water-based coatings

1982-05-19

1984-07-10

Page, Thurman K.

Coating processes

Restoring or repairing

427336, 4273936, 427403, 4274071, 4274121, B32B 3500, B05D 302

Patent

active

044593260

ABSTRACT:
A method of surface coating a synthetic plastic surface, and particularly of resurfacing an abraded polyurethane plastic surface is disclosed in which the surface is prime coated with an isocyanate-functional polyurethane in solution in an organic solvent medium which is inert to isocyanate functionality. The prime coated surface is dried by allowing the solvent to evaporate thus removing most of the organic solvent, and then the prime coating is overcoated with a water-based organic polymer coating composition. The isocyanate-functional polyurethane is desirably the reaction product of a diisocyanate with a polyether diol which may be used in admixture with a polyol containing 3 or 4 hydroxy groups. The solvent medium is desirably a blend of 75-90% of 1,1,1 trichloroethane with from 5-20% of 2-ethoxy ethanol acetate.

REFERENCES:
patent: 3772051 (1973-11-01), Shearing
patent: 3908043 (1975-09-01), Evans et al.

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