Patent ID: 7498363

Claim:
A two-component dental molding material comprising: a) at least one hydroxylsilyl-functional polyether a); b) at least one alkoxysilane b 1 ) of formula VI Si(OR 5 ) x R 6 y where x is a whole number between 1 and 4, y=4−x, R 5 , independent of one another, are alkyl, aryl, or acyl, and R 6 , independent of one another, are alkyl, alkenyl, aryl, acyl, (meth)acryloxy alkyl, amino(cyclo)alkyl, or amino acryl, or at least one polysilicic acid ester b 2 ) of formula VII (R 5 O) x1 R 7 y2 —Si—[O—Si(OR 5 ) 2 ] n —OSiR 7 y2 (OR 5 ) x2 where x 1 , x 2 , independent of one another, are whole numbers between 0 and 3, y 1 =3−x 1 , y 2 =3−x 2 , n is a whole number between 0 and 50, R 5 , independent of one another, are alkyl, aryl, or acyl, and R 7 , independent of one another, are alkyl, alkenyl, aryl, or acyl, or a combination of at least one alkoxysilane b 1 ) of formula VI and of at least one polysilicic acid ester b 2 ) of formula VII; C) at least one reinforcing filler c 1 ) having a BET surface of at least 50 m 2 /g or at least one non-reinforcing filler c 2 ) having a BET surface of less than 50 m 2 /g, or a combination of said at least one reinforcing filler c 1 ) and of said at least one non-reinforcing filler c 2 ); d) 0 to 3% by weight, referring to the total composition, of water d); and e) at least one condensation catalyst e), said two-component dental molding material comprising a first component A and a second component B, wherein component A comprises the alkoxysilane b 1 ) or the polysilicic acid ester b 2 ) or a combination of the alkoxysilane b 1 ) and of the polysilicic acid ester b 2 ), and the reinforcing filler c 1 ) or the non-reinforcing filler c 2 , and component B comprises the hydroxysilyl-functional polyether a), optionally the water d), the condensation catalyst e) and optionally the reinforcing filler c 1 ) or optionally the non-reinforcing filler c 2 ) or optionally a combination of the reinforcing filler c 1 ) and the non-reinforcing filler c 2 ), or wherein component A comprises the hydroxysilyl-functional polyether a), the reinforcing filler c 1 ) or the non-reinforcing filler c 2 ) or a combination of the reinforcing filler c 1 ) and the non-reinforcing filler c 2 ), and optionally the water d), and component B comprises the alkoxysilane b 1 ) or the polysilicic acid ester b 2 ) or a combination of the alkoxysilane b 1 ) and of the polysilicic acid ester b 2 ), the condensation catalyst, and optionally the reinforcing filler c 1 ) or optionally the reinforcing filler c 2 ) or optionally a combination of the reinforcing filler c 1 ) and the non-reinforcing filler c 2 ).