公开(公告)号：JPH10298021A

公开(公告)日：1998-11-10

申请号：JP799598

申请日：1998-01-19

申请人： JENERIC PENTRON INC

发明人： YANG ZHENYU ,  JIA WEITAO

IPC分类号： A61K6/00 ,  A61C13/00 ,  A61K6/083 ,  A61K6/884 ,  A61K6/893 ,  C08F222/20 ,  C09J4/00 ,  A61K6/08

摘要： PROBLEM TO BE SOLVED: To improve the abrasion resistance and the water-absorbing property of a composition used as a dental crown, a bridge material and a denture flooring material. SOLUTION: This composition is obtained by mixing (a) approximately 10-30 wt.% of a methacrylic acid ester oligomer, (b) approximately 65-90 wt.% of an ethoxylated dimethacrylic acid bisphenol A which has the structural formula of CH2 =C(CH3 )CO2 (C2 H4 O)x C6 H4 C(CH3 )2 C6 H4 (OC2 H4 )y O2 C(CH3 )=CH2 in which x+y is an integer of 1-20 and (C) approximately 0-40 wt.% of an ethoxylated monomer using as an eluent for decreasing the viscosity of the composition to make the total 100 wt.% by selecting specific proportions from respective content ranges of these components. By using this ethoxylated dimethacrylic acid bisphenol A, the relative amount of dimethacrylic acid ester oligomer is decreased. Further, the wettability of cured resin composition is improved by using the ethoxylated monomer. This composition is suitable for using for dental-filling substance adhesive and the like, and the improved water-absorbing property and the excellent abrasion resistance are obtained.