Patent · US Active

Silicone defoamer compositions

US9815003B2 · kind B2 · utility

0Cited by

9References

21Claims

0Family size

Assignee

Wacker Chemical AG · US

Inventors

Amitabha Mitra · Phillipsburg, US
Richard Becker · Burghausen, DE
John Richards · Warrington, US
Margaret Whitton · Jackson, US

Key dates

Filing date	Sep 28, 2015
Grant date	Nov 14, 2017
Priority date	—
Expiry date	Sep 28, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G77/80
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Defoamer compositions contain a) a two-stage hydrosilylation product of one or more M4HQ or M3HTphenyl starting materials with a hydrosilylatable composition containing α-methylstyrene, and then with a linear or branched organopolysiloxane bearing at least two hydrosilylatable groups; b) a silicone resin; and c) silica. The defoamers are particularly useful in machine laundering and dishwashing compositions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.