Organopolysiloxanes containing phosphonic groups, method for the production and use thereof

Abstract

The invention relates to new compounds of the formula, wherein R and Rare each independently hydrogen, a linear or branched Calkyl, Calkenyl or Calkynyl group, an aryl or Calkylaryl group or an optionally complex metal ion M/n wherein n is an integer from 1 to 8; the free valences of the silicate oxygen atoms are saturated by one or more of: silicon atoms of other groups of the formula, hydrogen, a linear or branched Calkyl group or by cross-linking bridge members RM(OR)Oor Al(OR)Oor RAl(OR)O; where Mis Si or Ti; Ris linear or branched Calkyl group; and Ris a linear or branched Calkyl group; k is an integer from 1 to 4 and q and m are integers from 0 to 2; such that m+k+q=4; and p is an integer from 1 to 3; and r is an integer from 1 to 2; or other known oxo metal bridging systems; x, y and z are integers such that the radio of x:y+z, varies from 0.00001 to 100,000 with the fragments [OSiCH(CHPO(OR)(OR))CHCHSiO]and [OSiCHCHPO(OR)(OR)]always present whilst the integer z varies from 0 to 200y. The compounds are useful as catalysts for a wide variety of reactions and have the advantages that they can be prepared in a one-pot reaction and have functional group losding can be tailored to be at a required level. In addition, the compounds have high chemical and thermal stability, fixed and rigid structures, are insoluble in organic solvents, high resistance to ageing, and can easily be purified and reused.