Sun Medical Co., Ltd.

Yuya Yamamoto

Tatsuya Ori

Tamaki Otsuki

Takashi Yamamoto

Akari Yamamoto

Asami Okuda

Masami Arata

Haruka Nishitani

The present invention improves the long-term storage stability of an organoborane-Lewis base complex. First composite particles of the present invention include particles of an organic polymer (B), and an organoborane-Lewis base complex (A) contained in the particles. Second composite particles of the present invention include particles of an inorganic compound (B'), and an organoborane-Lewis base complex (A) adsorbed on the particles.

Composite particles, kit, material, and method for producing composite particles

The present invention improves the long-term storage stability of a polymerizable composition including an organoborane and a polymerizable monomer. A polymerizable composition includes (A) an organoborane, (B) an acidic group-free polymerizable monomer, and (C) a stabilizer for the organoborane (A), the composition being such that when the composition, after being allowed to stand at 45&#xb0; C. for 48 hours, is analyzed with an E-type viscometer at a temperature of 25&#xb0; C. and a rotational speed of 50 rpm, the ratio of the viscosity after the standing to the viscosity before the standing (viscosity after standing/viscosity before standing) is less than 100.

Polymerizable composition and kit, and polymerization initiator

A dental curable composition has a curing time of 30 seconds to 120 minutes and includes a compound having an acidic group in the molecule (A), a polymerizable monomer (B), an organic amine compound (C) and a sulfur-containing reducing compound (D). In the dental curable composition, the content of the component (A) is 0.01 to 80 parts by weight, the content of the component (B) is 21 to 99.8 parts by weight, the content of the component (C) is 0.01 to 30 parts by weight and the content of the component (D) is 0 to 30 parts by weight. The composition may be cured at a relatively low temperature close to the body temperature without using a peroxide-based polymerization initiator, and has good sealing properties and adhesion.

Dental curable composition and kit for such dental curable composition

Growing community of inventors

Moriyama, Japan

Yuya Yamamoto