Method of coating glass bottle with aqueous dispersed urethane c

Details Method of coating glass bottle with aqueous dispersed urethane c Method of coating glass bottle with aqueous dispersed urethane c

1978-05-10

1979-08-07

Van Balen, William J.

Coating processes

With post-treatment of coating or coating material

Heating or drying

427425, 215 1R, 215DIG6, B05D 302, B05D 102

Patent

active

041638140

ABSTRACT:
An aqueous dispersed urethane composition which is excellent in film-forming property and useful in protecting glass bottles when formed into a film can be obtained by producing a urethane oligomer by interacting a polyoxyalkylene glycol having a molecular weight equal to or above 1200, a low molecular weight chain-elongating agent selected from a glycol, an amino-alcohol and a diamine each having a molecular weight below 500, an isocyanate-blocking agent selected from an oxime, a lactam and an alcohol, and a diisocyanate, and dispersing the urethane oligomer and a hardener in water by the use of a surface active agent such that the sum by weight of the surface active agent contained in the aqueous dispersed urethane composition and the polyoxyalkylene glycol which is one of the starting materials for the production of the urethane oligomer is in the range of 15 to 35% of the sum by weight of the surface active agent, the urethane oligomer and the hardener.

REFERENCES:
patent: 3384506 (1968-05-01), Elkin
patent: 3438922 (1969-04-01), Ueno et al.
patent: 3518113 (1970-06-01), MacGugan
patent: 3539482 (1970-11-01), Stewart
patent: 3823032 (1974-07-01), Ukai
patent: 3877969 (1975-04-01), Tatsumi et al.
patent: 3886226 (1975-05-01), Asai et al.
patent: 3889031 (1975-06-01), Tatsumi et al.

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