Clear coating composition and method of producing same

Details Clear coating composition and method of producing same Clear coating composition and method of producing same

1991-09-19

1993-02-16

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523500, 524513, 525124, 525165, 525166, 525443, 525518, 525519, 525520, C08L 3302, C08L 6128

Patent

active

051871998

ABSTRACT:
The clear coating composition includes (a) an acrylic resin having a number-average molecular weight of 2500-10000 and a hydroxyl number of 70-120, and containing 20-40 parts by weight of styrene and/or its derivative, based on 100 parts by weight of acrylic resin-constituting monomers (solid basis); (b) a polyester resin having a number-average molecular weight of 350-1500 and a hydroxyl number of 150-300; (c) a mixture of (i) an alkyl ether-substituted melamine resin containing 5 or more alkyl ether groups per each triazine ring; and (ii) a melamine resin containing 1.1-3 imino groups per each triazine ring, a weight ratio of the component (i) to the component (ii) being 8/2-5/5; (d) an acid catalyst blocked with an amine having a boiling point of 150.degree.-280.degree. C.; and (e) a blocked isocyanate, weight ratios of the components being (a)/(b)=100/0-60/40; and (c)/(e)=100/0-33/67.

REFERENCES:
patent: 4122055 (1978-10-01), Tugukuni et al.
patent: 4510275 (1985-04-01), Ihikura et al.
patent: 5100735 (1992-03-01), Chang
Abridged English translation of Japanese Patent Laid-Open No. 1-158079.
Abridged English translation of Japanese Patent Laid-Open No. 1-310773.

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