Coating composition and process for preparing synthetic resin sh

Details Coating composition and process for preparing synthetic resin sh Coating composition and process for preparing synthetic resin sh

1981-03-03

1982-07-13

Smith, John D.

Coating processes

Electrical product produced

Welding electrode

20415916, 427 44, B05D 306, C08F 800

Patent

active

043394744

ABSTRACT:
A coating composition for the preparation of synthetic resin shaped articles excellent in abrasion resistance and weatherability is described. This composition comprises (a) a polyfunctional monomer composition comprising (i) 40-100 wt. % of a polyfunctional monomer containing at least three methacryloyloxy or acryloyloxy groups in the molecule and having a MW of not higher than about 900 and (ii) 0-60 wt. % of a mono- or bi-functional monomer having one or two methacryloyloxy or acryloyloxy groups in the molecule and having a MW of not higher than about 300 per methacryloyloxy or acryloyloxy group, (b) 5-35 parts by wt., based on 100 wt. parts of the monomer composition, of at least one ultraviolet absorber, (c) 0.5-8 wt. parts, based on 100 parts by wt. of the monomer composition, of at least one polymeric material selected from polymers of alkyl methacrylates and alkyl acrylates, and (d) 0.01-6 parts by wt., based on 100 parts by wt. of the monomer composition, of a photosensitizer. The coating composition is coated on a synthetic resin shaped article and then, irradiated with ultraviolet rays in an inert gas or air to form a crosslinked coating film having a thickness of 1 to 30 microns.

REFERENCES:
patent: 3968309 (1976-07-01), Matsuo et al.
patent: 4049634 (1977-09-01), Ko et al.
patent: 4199421 (1980-04-01), Kamada et al.
patent: 4228267 (1980-10-01), Higashizume et al.

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