Patent Number: 8,822,621

Title: Method for producing (hydroxymethyl)polysiloxanes

Abstract: A method for producing (hydroxymethyl)polysiloxanes of the general formula I (SiO.sub.4/2).sub.k(R.sup.1SiO.sub.3/2).sub.m(R.sup.1.sub.2SiO.- sub.2/2).sub.p(R.sup.1.sub.3SiO.sub.1/2).sub.q[O.sub.1/2--(SiR.sup.2.sub.2- --X--Y--).sub.aSiR.sup.2.sub.2--CH.sub.2--OH].sub.s[O.sub.1/2H].sub.t formula I, includes reacting silanol-containing organosiloxanes of the general formula II (SiO.sub.4/2).sub.k(R.sup.1SiO.sub.3/2).sub.m(R.sup.1.sub.2SiO.sub.2/2).s- ub.p(R.sup.1.sub.3SiO.sub.1/2).sub.q[O.sub.1/2H].sub.r formula II with cyclic or acyclic compounds that include at least one unit of the general formula III Z--[O--CH.sub.2--SiR.sup.2.sub.2].sub.n--Y formula III

Inventors: Daiss; Jurgen Oliver (Munchen, DE), Cremer; Jens (Munchen, DE), Fritz-Langhals; Elke (Ottobrunn, DE), Jungermann; Steffen (Munchen, DE)

Assignee: Wacker Chemie AG

International Classification: C08G 77/16 (20060101)

Expiration Date: 9/02/12018