Biorrestoration material and denture material available therefrom

摘要

A biorestoration material similar to a rubber elastic material and a shear modulus of 1.0 × 10 4 Pa to 9.99 × 10 9 Pa at 23 ° C and a rubber hardness of 1 to 90 measured at 23 ° C ± 1.5 ° C using hardness tester type C, wherein the Knoop hardness after polymerization is 10 or more measured after 24 hours storage in water at 50 ° C using a hardness tester and a load of 25 g, comprising: a) 14.5 to 62.5% by weight of a polymer, wherein the polymer is a homopolymer or copolymer in which a core of polymer particles of crosslinked polyalkyl (meth) acrylate is composed and a shell of PMMA or PEMA, and wherein the polymer has an average molecular weight b) from 10.0 to 37.5% by weight of a polymerizable monomer selected from methyl methacrylate (MMA), ethyl (meth) acrylate, (meth) acrylic acid butyl ester, from 100,000 to 1,000,000 and an average particle diameter of 1 to 100 μm it, 2-hydroxyethyl methacrylate (2-HEMA), ethylene glycol di (meth) acrylate (EG), triethylene glycol di (meth) acrylate (TG), trimethylolpropane trimethacrylate (TMPT), reaction compositions of phosphonyl chloride and 2-hydroxyethyl methacrylate (PPZ) and 2 , 2-bis [4-methacryloxyphenyl] propane di (meth) acrylate (D-2.6E), c) 10.0 to 60.0 wt% of a silane-treated colloidal silica uniformly dispersing in urethane (meth) acrylate wherein the colloidal silica has an average particle diameter (primary particles) of 1 to 85 nm and wherein the colloidal silica having a silane compound represented by the general formula (I) is YnSiX4-n (I) in which Y is a hydrocarbon radical or a vinyl-polymerizable reactive group, X represents a hydrolyzable group and n represents a numerical value of 1, 2 or 3, and d) a polymerization initiator.