Patent ID: 7582700
Filing Date: 2009-09-01
Classification: C08G,C08J,C08L

Abstract:
1. A process for preparing emulsions of highly viscous organopolysiloxanes having a viscosity of at least 10,000 mPa·s, comprising reacting siloxanes (1) comprising units of the formula where A each independently is a monovalent, Si—C-bonded radical having basic nitrogen, R is each independently a monovalent, optionally substituted hydrocarbon radical having from 1 to 18 carbon atoms per radical, R a each independently is 0 or 1, c each independently is 0, 1, 2 or 3 and d each independently is 0 or 1, with the proviso that the sum of a+c+d is ≦3 and, on average, at least one A radical and at least one R 1 radical where R 1 is a hydrogen atom are present per molecule, siloxanes (2) composed of units of the formula where R, R 1 , c and d are each as defined above, with the proviso that the sum of c+d is ≦3 and at least one R 1 radical where R 1 is a hydrogen atom are present per molecule, or a mixture of siloxanes (1) and (2), with silanes (3) of the formula where B each independently is a monovalent radical of the formula —CR R Y each independently is a monofunctional radical selected from the group consisting of the halogens, monosubstituted O and S atoms, and substituted N and P atoms, R e is 0, 1 or 2, in the presence of dispersion medium (4) and optionally emulsifiers (5).