Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-10-22
1980-06-10
Lawrence, Evan K.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156230, 260 292TN, 427244, 427246, 521 63, 521 64, B32B 3126
Patent
active
042071283
ABSTRACT:
This invention is concerned with a process for producing microporous coatings comprising (1) mixing an NCO-prepolymer prepared from polyisocyanates with compounds containing at least two isocyanate-reactive hydrogen atoms with about 3 to 40% by weight, based on the NCO-prepolymer, of a substantially inert, non-migrating liquid organic compound miscible with said NCO-prepolymer as a plasticizer; (2) adding about 3 to 300 weight % of water, based on the NCO-prepolymer, into the NCO-prepolymer-plasticizer mixture to form a water-in-oil emulsion; (3) adding a polyamine in a quantity substantially equivalent to the isocyanate groups; (4) applying a coating of the water-in-oil emulsion to a substrate; and (5) hardening the coating by evaporating the chemically unbound water from said coating.
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Konig Klaus
Muller Hans J.
Traubel Harro
Zorn Bruno
Bayer Aktiengesellschaft
Harsh Gene
Lawrence Evan K.
Pope Lawrence S.
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