Title: Method of coating glass bottle with aqueous dispersed urethane composition

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.

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Inventors: Asai, Kiyotsugu (Yokohama, JP)
Takaguchi, Kazunori (Kawasaki, JP)
Kawabata, Toshihiko (Fujisawa, JP)
Yatsugi, Shigeru (Kawasaki, JP)
Ichikawa, Toshiyuki (Tokyo, JP)

Application Number: 904419
Filing Date: 1978-05-10
Publication_date: 1979-08-07
Assignee: Mitsui-Nisso Corporation (Tokyo, JP)
Primary Class(es): 427/372.2 215/12.1, 215/DIG6, 427/379, 427/389.7, 427/425
Other Classes:
US Patent Ref:

3384506	May, 1968	Elkin	260/29.
3438922	Apr, 1969	Ueno et al.	260/29.
3518113	Jun, 1970	MacGugan	260/29.
3539482	Nov, 1970	Stewart	260/29.
3823032	Jul, 1974	Ukai	428/35.
3877969	Apr, 1975	Tatsumi et al.	428/35.
3886226	May, 1975	Asai et al.	428/35.
3889031	Jun, 1975	Tatsumi et al.	428/35.

Other Refs:
Primary Examiner: Van Balen, William J.
Assistant Examiner:
Attorney: Fisher, Christen, & Sabol