Aqueous composition

Details Aqueous composition Aqueous composition

1993-03-12

1995-07-18

Michl, Paul R.

Stock material or miscellaneous articles

Composite

Of polyamidoester

4273855, 4284237, 524591, 524839, 524840, 528 45, 528 66, B05D 302, C08G 1881

Patent

active

054340055

ABSTRACT:
An aqueous composition comprising a carboxylate group-containing blocked polyurethane and water as essential components, wherein said polyurethane is a reaction product of a carboxylic acid (or carboxylate) group-containing polyoxyalkylene polyol containing at least 50% by weight of oxyethylene groups, with an average number of hydroxyl groups being more than 2 and having, on an average, from 0.005 to 0.8 --COOX group (X: a hydrogen atom or a cation) per molecule at the backbone chain terminals, a polyisocyanate having isocyanate groups in an amount stoichiometrically in excess of the hydroxyl groups of said polyol, and a blocking agent in an amount corresponding to the stoichiometrically excess amount of said polyisocyanate, and when X is a hydrogen atom, X is converted to a cation at an optional stage.

REFERENCES:
patent: 4119602 (1978-10-01), Isgur et al.
patent: 4448922 (1984-05-01), McCartney
patent: 4701480 (1987-10-01), Markusch et al.
Webster's Ninth New Collegiate Dictionary, p. 1298 "urethane".

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