Patent · US Expired

Defoamer containing liquid polybutene

US3959175A · kind A · utility

28Cited by

5References

16Claims

0Family size

Inventors

Richard L. Smith · Macedonia, US
Joseph W. Johns, Jr. · Bennettsville, US

Key dates

Filing date	Sep 11, 1974
Grant date	May 25, 1976
Priority date	—
Expiry date	Sep 11, 1994

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D19/0404
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An organic defoamer comprising a mixture of polybutene plus at least one predominantly hydrophobic material having a relatively high melting point. A defoaming composition comprising a mixture of polybutene, at least one predominantly hydrophobic material having a relatively high melting point, and a normally hydrophilic material whose surface is rendered hydrophobic.

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