| 摘要 |
PURPOSE:To obtain the subject composition, containing a polymer of an unsaturated carboxylic acid, fluoroaluminosilicate glass powder and unsaturated compound having (meth)acryloyl group, capable of rapidly carrying out initial curing reaction with ultralow sensitivity to water in the initial period of curing. CONSTITUTION:A composition containing (A) 5-100 pts.wt. polymer of an alpha-beta unsaturated carboxylic acid having 5000-40000 weight-average molecular weight, preferably a (co)polymer of acrylic acid or maleic acid, (B) 5-100 pts.wt. fluoroaluminosilicate glass powder, having 0.02-10mum average particle diameter and 2.4-4.0 specific gravity and reactive with the ingredient (A), (C) 5-100 pts.wt. polymerizable unsaturated organic compound having at least one group expressed by the formula (R1 is H or CH3), preferably unreactive with the ingredient (B), (D) 0.01-5 pts.wt. polymerization catalyst, preferably photopolymerization initiator, (E) 2-50 pts.wt. water, (F) 0.01-20 pts.wt. surfactant and (G) 0.01-5 pts.wt. reducing agent (e.g. amines). |
