PROBLEM TO BE SOLVED: To provide a radical polymerization catalyst which has a high chemical stability, can be easily handled, is highly active, hardly suffers from polymerization inhibition, and does not color or discolor a cured item an adhesive for dental use which imparts a high adhesive strength to both dentinum and enamelum, does not need a light irradiation operation, and is applicable to dental repair materials of both a photopolymerization type and a chemical polymerization type and a high-strength dental repair material free from coloration and discoloration.SOLUTION: This radical polymerization catalyst comprises an acidic compound (e.g. 11-methacryloxyundecane-1,1-dicarboxylic acid), a +IV-valent and/or +V-valent vanadium compound, and an arylborate compound (e.g. sodium tetraphenylborate). A composition for dental use containing the catalyst is also provided.COPYRIGHT: (C)2003,JPO【課題】 化学的安定性が高く取り扱いが容易で、活性が高く、重合阻害を受け難く、硬化体を着色させたり変色させたりすることのないラジカル重合触媒、および象牙質およびエナメル質双方に高い接着強度を与え、且つ光照射操作が不要であり、光重合型だけでなく化学重合型の歯科用修復材料に対しても適用可能な歯科用接着材、および着色や変色がなく高強度な歯科用修復材を提供する。【解決手段】 11-メタクリロキシウンデカン-1,1-ジカルボン酸のような酸性化合物、+IV価及び/又は+V価のバナジウム化合物、およびテトラフェニルホウ素ナトリウム等のアリールボレート化合物からなるラジカル重合触媒、および該ラジカル重合触媒を含んでなる歯科用組成物。
