초록 ▼

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 triacrylat

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.

대표청구항 ▼

A radiation curable, liquid coating composition comprising from 70% to 85% of one or more polyacrylates or methacrylates containing at least 2.4 unsaturated groups per molecule, from 5% to 15% of a carboxylic acid which contains acrylic or methacrylic unsaturation, and at least one photoinitiator re

A radiation curable, liquid coating composition comprising from 70% to 85% of one or more polyacrylates or methacrylates containing at least 2.4 unsaturated groups per molecule, from 5% to 15% of a carboxylic acid which contains acrylic or methacrylic unsaturation, and at least one photoinitiator rendering the composition sensitive to ultraviolet light, said proportions being based on the total weight of polymerizable material.