Recyclable cold curing aqueous coating composition and method fo

Details Recyclable cold curing aqueous coating composition and method fo Recyclable cold curing aqueous coating composition and method fo

1998-05-05

2000-10-03

Dawson, Robert

Coating processes

Immersion or partial immersion

Metal base

210650, 210651, B05D 102

Patent

active

061270016

ABSTRACT:
The present invention provide a recyclable cold curing aqueous coating composition comprising an acrylic group-modified epoxidized ester resin with acid vale of 25 to 60, which is formed from an epoxy resin (a), a fatty acid (b) and an ethylenically unsaturated monomer (c) in a component (a)/component (b)/component (c) weigh % ratio of 20 to 70/20 to 50/3 to 50, the sum of (a), (b) and (c) being 100 weight %, and a method for reusing it. For the method of the present invention, the coating composition has improved recycling properties by optimizing the properties such as acid value of the resin, the pH of a collecting solution for use to collect the coating composition and a content of a hydrophilic solvent in the collecting solution.

REFERENCES:
patent: 4096061 (1978-06-01), Brennan
patent: 4151131 (1979-04-01), Sekmakas et al.
patent: 4222912 (1980-09-01), Sekmakas et al.
patent: 4458040 (1984-07-01), Suzuki et al.
patent: 4970135 (1990-11-01), Kushi et al.

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