Molded articles of plastics having improved surface characterist

Details Molded articles of plastics having improved surface characterist Molded articles of plastics having improved surface characterist

1974-11-25

1976-07-06

Ansher, Harold

Stock material or miscellaneous articles

Surface property or characteristic of web, sheet or block

264 1, 428500, 428520, 428522, 428918, B32B 2730

Patent

active

039683095

ABSTRACT:
A molded article of plastic having on its surface a cured film of a coating material comprising at least 30% by weight of at least one polyfunctional compound selected from the group consisting of poly-methacryloyloxy compounds having a molecular weight of 250 to 800 and containing at least three methacryloyloxy groups in the molecule and poly-acryloyloxy compounds having a molecular weight of 250 to 800 and containing at least three acryloyloxy groups in the molecule, and optionally 0.01 to 5% by weight of a fluorine-containing surfactant and 0.01 to 5% by weight of a carbonyl compound as photosensitizer has improved surface characteristics, particularly a high surface hardness, a high surface smoothness, high heat resistance, high abrasion resistance and a minimized optical distortion. Said molded article of plastic having improved surface characteristics can be prepared by coating the molded substrate of plastic with said coating material to a thickness of 1 to 50.mu. and then subjecting the coated article to a light of 2,000 to 8,000 A in an inert atmosphere to cure the coating material.

REFERENCES:
patent: 2464826 (1949-03-01), Neher et al.
patent: 3084073 (1963-04-01), Kine et al.
patent: 3310458 (1967-03-01), Mattimoe et al.
patent: 3529995 (1970-09-01), Smith et al.

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