Patent ID: 11931673
Assignee: WACKER CHEMIE AG
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  D | IPC B  C  D

Claim 8:
9. The defoamer formulation of claim 1, wherein the silanol-containing organopolysiloxane(s) (4) are those of the formula

R′R42SiO—(SiR42O)nSiR42OH   (VIa),, wherein, R4 each is identical or different and represents a monovalent SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms, which may contain one or more nonadjacent oxygen atoms, and, R′ each is a hydrogen atom or an optionally substituted C1-C18-hydrocarbon radical which may contain one or more halogen, O, S or N atoms or one or more —C(═O)— or —C(═O)O— groups, and, n has integral values between 50 and 250.