Patent · US Expired

Surfactant foams and their use

US4284601A · kind A · utility

4Cited by

5References

15Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Dong M. Chay · Wilmington, US
David J. Haack · Wilmington, US

Key dates

Filing date	Aug 18, 1980
Grant date	Aug 18, 1981
Priority date	—
Expiry date	Aug 18, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01G31/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Aqueous foam compositions comprising water and a mixture of ammonium lauryl sulfate, methyl polyoxyethylene cocoamine chloride, dimethyl cocoamine oxide and polyvinyl alcohol are used to suppress the formation of fumes from fumable materials by covering the material with said compositions in the form of foam, thereby causing the material to react with the water to prevent fume release.

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