Stock material or miscellaneous articles – Composite – Of polycarbonate
Patent
1984-10-22
1986-07-15
Marquis, Melvyn I.
Stock material or miscellaneous articles
Composite
Of polycarbonate
428447, 428518, 427 541, 522 33, 522 92, 522 95, 522120, 522122, B05D 136
Patent
active
046006494
ABSTRACT:
Ultraviolet-curable, liquid coating compositions are disclosed which are resistant to abrasion and which are strongly adherent to basic plastic surfaces. These compositions comprise one or more polyacrylates or polymethacrylates, preferably including from 70% to 85% of trimethylol propane triacrylate, from 5% to 15% of a carboxylic acid which contains acrylic or methacrylic unsaturation, preferably acrylic acid itself, and photoinitiators (which are preferably ketonic and which desirably comprise a substituted acetophenone and benzophenone) are used to render the composition sensitive to ultraviolet light. The polyacrylate component preferably includes from 1% to 12% of a diacrylate or dimethacrylate of a diglycidyl ether of a bisphenol in which the molecular weight of the diglycidyl ether is less than about 600. The above proportions are based on the total weight of polymerizable material. The composition preferably also includes 0.5% to 2.5% of a silicone dicarbinol diurethane diacrylate in which the carbinol groups are carried by an alkoxylate, preferably an ethoxylate, constituting from 30% to 70% of the silicone dicarbinol.
REFERENCES:
patent: 4284707 (1981-08-01), Nagasawa et al.
patent: 4317862 (1982-03-01), Honda et al.
patent: 4451568 (1984-05-01), Schneider et al.
patent: 4468489 (1984-12-01), George
DeSoto, Inc.
Marquis Melvyn I.
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