Tokuyama Soda Kabushiki Kaisha

Tokuyama Corporation

Hidenori Okamoto

Tetsuo Takematsu

Keisuke Sasaki

Shozo Kato

Hideki Ohno

Norihiro Tanaka

Masaru Ogasawara

Takesi Satou

A single crystal of 3-(2-furyl)methacrylic acid anhydride,

Single crystal of 3-(2-furyl)methacrylic acid anhydride

There is provided a curable composition for dental restoration comprising a vinyl monomer containing not less than 30% by weight of an acid group-containing vinyl monomer represented by the formula ##STR1## wherein R.sup.1 's may be the same or different and each denotes a hydrogen atom or a methyl group, R.sup.2 denotes a trivalent to hexavalent organic residue having 1 to 30 carbon atoms which residue may have an ether linkage and/or an ester linkage, m is an integer of 2 to 4, n is an integer of 1 or 2, an ion dissolving filler that dissolves a polyvalent metallic ion, and a polymerization initiator. Said curable composition features that it shows high adhesion even under humidity, and its cured product has high strength and less coloration.

Diacrylate compounds

A haloacetamide compound of the following formula (I) ##STR1## wherein R.sub.1 represents a substituted or unsubstituted C.sub.6 -C.sub.14 aryl group or a substituted or unsubstituted C.sub.3 -C.sub.8 heteroaryl group having one or two hetero atoms selected from the group consisting of O, S and N,

Haloacetamide compounds, process for production thereof, and use thereof

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Tsukuba, Japan

Hidenori Okamoto