Patent · US Active

Silicone antifoam particles

US8461221B2 · kind B2 · utility

1Cited by

6References

15Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Richard Becker · Burghausen, DE
Herbert Siegl

Key dates

Filing date	May 5, 2010
Grant date	Jun 11, 2013
Priority date	—
Expiry date	May 20, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D17/06
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Antifoam particles contain: (A) porous copolymers of urea or melamine or a mixture thereof with an alkanal, and (B) a silicone antifoam composition which is liquid at 0° C. The invention also provides pulverulent antifoam agents which comprise antifoam particles and optionally further carrier materials.

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