PURPOSE: To obtain a liquid polymerizable resin composition which can give a cured product having small curing shrinkage and improved appearance and water resistance by mixing a specified unsaturated urethane with a vinyl monomer copolymerizable therewith and an inorganic powdery filler.
CONSTITUTION: A (meth)acrylic ester monool (a), a monool containing a long- chain aliphatic group (b) and a polyisocyanate (c) are reacted with each other in a molar ratio of the isocyanate groups of (c) to the hydroxyl groups of (a) and (b) of 1/0.95-0.95/1 to obtain an unsaturated urethane (A) of the formula (wherein X is a residue of a di- to detra-polyisocyanate; Y is a residue of a di- to tetra-polyol; R1 is a residue of a non-radical-polymerizable monool containing a 6-22C aliphatic hydrocarbon group; R2 is H or CH3; and p, q and r are each 1-3 provided 2≤p+q≤4 and q×r≥2). 100 pts.wt. total of 90-10wt.% component A and 10-90wt.% vinyl monomer (B) copolymerizable with component A is mixed with 30-300 pts.wt. inorganic powdery filler.
| JPH10204186 | CONSTRUCTION MATERIAL |
| JPS58209385 | DIFFERENT HARDNESS CUSHION AND PRODUCTION THEREOF |
MATSUEDA KOICHI
SUGIURA MASAHITO
OZAKI TATSUHIKO
WADA HIROTAKA
SUZUKI TOSHIJI
KOMIYA IWAO
