Patent ID: 11925883
Assignee: WACKER CHEMIE AG
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  D | IPC B  C  D

Claim 10:
11. The defoamer formulation of claim 1, wherein the organopolysiloxane resin(s) (3) are MQ resins composed of units of formulae

SiO2 (Q units) and

R23SiO1/2 (M units),

wherein
the molar ratio of M units to Q units is in the range from 0.5 to 2.0, the MQ resins optionally also contain, in addition to the M units and Q units, R2SiO3/2 or (R3O)SiO3/2 (T) units or R22SiO2/2 (D) units in amounts of 0.01 to 20 mol %, based on the sum of all siloxane units, and the MQ resins may contain up to 10% by weight of free Si-bonded hydroxyl or alkoxy groups.