Addition cross-linking two-component silicon material containing rigid and/or bulky groups annd having a high flexural strength and E-modul

摘要

A two-component dental material cross-linked by addition such as hydrosilylation comprises at least one compound (A) having at least two vinyl groups in the molecule; at least one organohydrogen silicon compound (B); and at least one catalyst. At least one of (A) or (B) comprises a first structural unit comprising at least one voluminous or rigid group and a second structural unit comprising at least two alkenyl-functional or hydrogen-functional silyl units. A two-component, dental material cross-linked by addition such as hydrosilylation comprises at least one compound (A) having at least two vinyl groups in the molecule; at least one organohydrogen silicon compound (B); and at least one catalyst. At least one of (A) or (B) comprises a first structural unit comprising at least one voluminous or rigid group and a second structural unit comprising at least two alkenyl-functional or at least two hydrogen-functional silyl units of formula -Si(R 1>)(R 2>)-CH=CH 2 or -Si(R 3>)(R 4>)H. The second structural unit is bound to the first structural unit either directly; by way of an oxygen atom; by way of a spacer group; or by way of a spacer group bound to the first structural unit by way of an oxygen atom. R 1> and R 2>alkyl, (alkyl)aryl, aralkyl (all optionally halogenated), alkenyl, cyanoalkyl, siloxy, cycloalkyl or cycloalkenyl; and R 3> and R 4>H or R 1>.