Patent ID: 6093841
Filing Date: 2000-07-25
Classification: C08G

Abstract:
A method for preparing nonreactive aminosilicone oils by base-catalyzed equilibration, which comprises:a) reacting in a first step,at least one organosilicon compound having the formula (I):(R).sub.a (R.sup.1 O).sub.3-a --Si--(CR.sup.2.sub.2).sub.m --(NR.sup.3 --(CR.sup.2.sub.2).sub.n).sub.p --NR.sup.3.sub.2 (I)wherein R independently of one another stands for univalent, saturated and/or unsaturated hydrocarbon groups with 1 to about 20 carbon atoms or aryl groups with about 6 to 20 carbon atoms, R.sup.1 independently of one another stands for univalent alkyl groups with 1 to about 4 carbon atoms, R.sup.2 independently of one another stands for saturated and/or unsaturated, substituted or unsubstituted or both, linear or cyclic hydrocarbon groups with 1 to about 30 carbon atoms or hydrogen, R.sup.3 independently of one another stands for alkyl, cycloalkyl, and/or aryl groups with 1 to about 20 carbon atoms or hydrogen or (R.sup.1 O).sub.a (R.sub.2).sub.3-a --Si--(CR.sup.2.sub.2).sub.m -- groups, and a stands for either 0 or 1, and in and n independently of one another assume values of 1 to 10, and p is either 0, 1, or 2, and/or its partial hydrolyzate, with at least one cyclic organosilicon compound of the formula (II):(R.sub.2 SiO).sub.x (II)wherein R has the meanings given above and x assumes average values between 3 and 10, in the presence of a basic catalyst andin the presence of at least one compound that has OH groups, with the maximum total fraction of OH groups in the first step being 75 mol-% based on the (R.sup.1 O) groups contained in the formula (I); andb) reacting a reaction mixture obtained in said first step a), in the presence of water, with at least one organosilicon compound having the formula (III)R.sub.3 SiO(SiR.sub.2).sub.z SiR.sub.3 (III)wherein R is as defined above and z has an average value between 0 and 1,000.