Patent · US Expired

Particulate foam control agents and their use

US5767053A · kind A · utility

9Cited by

6References

18Claims

0Family size

Assignee

Dow Corning S.A. · BE

Inventors

Pierre Germain · Berkeley, US
Bernhard Ernst Gold · Rheydt, DE
Jan Hoogland · Grants Pass, US
Bertrand Louis Julien Lenoble · Hellebecq, BE
Mark Prince · Overijse, BE

Key dates

Filing date	Dec 20, 1995
Grant date	Jun 16, 1998
Priority date	—
Expiry date	Dec 20, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D17/0034
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of making a particulate foam control agent comprising 0.001 to 30 parts of silicone antifoam, 45 to 99 parts of a zeolite and 0 to 30 parts of a binder, preferably of a polycarboxylate-type, able to release at least some antifoam from the zeolite in the first 10 minutes of a washing cycle comprises depositing from 0.1 to 500% of the silicone antifoam of an organic surfactant onto the zeolite not later than depositing the silicone antifoam, at least 1 part of surfactant being used per 100 parts of the foam control agent. Also covered are detergent compositions and some foam control agents.

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