Aqueous water-repellent coatings

Details Aqueous water-repellent coatings Aqueous water-repellent coatings

1984-12-13

1986-03-18

Pertilla, Theodore E.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524277, 524488, 524489, 524501, 524507, 525123, C08K 501, C08L 9108

Patent

active

045769877

ABSTRACT:
An aqueous coating composition is disclosed which contains a large proportion of wax which dries to provide a continuous and durable film from which the wax exudes slowly and progressively to the surface over a long period of time to provide long term water resistance. This composition comprises: (1) from 5% to 40% of an aqueous microcrystalline wax dispersion; (2) from 40% to 93% of an aqueous emulsion of copolymerized monoethylenically unsaturated monomers having a sufficiently low glass transition temperature to coalesce on air drying; and (3) from 1% to 20% of an N-methylol functional self crosslinking polyurethane aqueous dispersion in which the polyurethane contains sufficient volatile amine-neutralized carboxyl groups for water dispersibility, these proportions being by weight based on the solids content of the three components which are blended together.

REFERENCES:
patent: 3862074 (1975-01-01), Hickey
patent: 4450247 (1984-05-01), Crockatt et al.

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