Patent · US Active

Drycleaning method

US7575604B2 · kind B2 · utility

0Cited by

13References

13Claims

0Family size

Assignee

Lyondell Chemical Technology, L.P. · US

Inventors

Paul E. Galick · West Chester, US
Frank J. Liotta, Jr. · Downingtown, US
Mark A. Liepa · Exton, US

Key dates

Filing date	Oct 6, 2006
Grant date	Aug 18, 2009
Priority date	—
Expiry date	Oct 6, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D7/5027
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A drycleaning method is disclosed. The method uses a composition comprising 30 to 90 wt. % of a dipropylene glycol C3-C4 alkyl ether, 5 to 65 wt. % of one or more C10-C15 hydrocarbons, and 1 to 10 wt. % of water. The method combines acceptable stain removal with faster-than-expected evaporability, particularly at the elevated temperatures used in commercial drycleaning.

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