IP Library Granted Patent US 7,488,352
Granted Patent B2
US 7,488,352 · App. 10/539,001 · Granted Feb 10, 2009

Dry cleaning process

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Quick Facts
Patent No.
US 7,488,352
App. No.
10/539,001
Granted
Feb 10, 2009
Kind
B2
Abstract

A dry cleaning process for in-home dry cleaning comprising a dry cleaning step of contacting a laundry article stained with particulate soil with a dry cleaning composition wherein the liquor to cloth ratio (w/w) (LCR) is at most 20, and wherein the composition comprises a) a non-flammable, non-chlorine containing organic dry cleaning solvent; b) a cleaning effective amount of an acid surfactant.

Claims (13)

1. A dry cleaning process for in-home dry cleaning consisting of a dry cleaning step of contacting a laundry article stained with particulate soil with a low aqueous dry cleaning composition wherein the liquor to cloth ratio (w/w) (LCR) is at most 20,

wherein said composition comprises

a) a non-flammable, non-chlorine containing organic dry cleaning solvent;

b) from 0.05 to 0.9% by weight of an acid surfactant; and a subsequent step of rinsing the articles with only clean dry cleaning solvent comprising

0 to 0.0001 wt. % of a surfactant;

0 wt.% of water;

0 to 50 wt. % of a cosolvent and

a non-flammable, non-chlorine containing organic dry cleaning solvent.

2. A dry cleaning according to process for in-home dry cleaning according to claim 1 wherein the low aqueous dry cleaning composition comprises 0.01 to 10 wt. % of water.

3. A dry cleaning process for in-home dry cleaning according to claim 2 wherein the low aqueous dry cleaning composition comprises from 0.01 to 0.8 wt. % of the acid surfactant.

4. A dry cleaning process for in-home dry cleaning according to claim 1 whereby said liquid to cloth ratio (w/w) is at most 10.

5. A dry cleaning process for in-home dry cleaning according to claim 2 wherein the water to cloth ratio (w/w) during the low aqueous dry cleaning step is less than 0.45.

6. A dry cleaning process according to claim 1 wherein the non-flammable, non-chlorine containing organic dry cleaning solvent is selected from the group consisting of the isomers of nonafluoromethoxybutane, nonafluoroethoxybutane and decafluoropentane, octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, decamethyl tetrasiloxane, dodecamethyl pentasiloxane and mixtures thereof.

Assignments (7)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 9, 2017
From: THE SUN PRODUCTS CORPORATION
To: HENKEL IP & HOLDING GMBH
Reel/Frame 041937/0131 →
RELEASE OF SECURITY INTEREST Recorded Sep 14, 2016
From: JPMORGAN CHASE BANK, N.A.
To: THE SUN PRODUCTS CORPORATION
Reel/Frame 040027/0272 →
SECURITY AGREEMENT Recorded Mar 27, 2013
From: THE SUN PRODUCTS CORPORATION
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 030100/0687 →
RELEASE BY SECURITY PARTY AS PREVIOUSLY RECORDED ON REEL 029816 FRAME 0362 Recorded Mar 25, 2013
From: U.S. BANK NATIONAL ASSOCIATION
To: SPOTLESS HOLDING CORP.; SPOTLESS ACQUISITION CORP.; THE SUN PRODUCTS CORPORATION (F/K/A HUISH DETERGENTS, INC.)
Reel/Frame 030080/0550 →
SECOND LIEN GRANT OF SECURITY INTEREST IN PATENT RIGHTS Recorded Feb 14, 2013
From: SPOTLESS HOLDING CORP.; SPOTLESS ACQUISITION CORP.; THE SUN PRODUCTS CORPORATION (F/K/A HUISH DETERGENTS, INC.)
To: U.S. BANK NATIONAL ASSOCIATION
Reel/Frame 029816/0362 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 11, 2009
From: CONOPCO, INC.
To: THE SUN PRODUCTS CORPORATION
Reel/Frame 023208/0767 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2006
From: EVERS, JOHANNES MARIA WILHELMUS; GOEDHART, MACHIEL; KERPELS, FREDDIE; VAN KRALINGEN, CORNELIS GERHARD; OVERDEVEST, PIETER EVERHARDUS MARIA; REINHOUDT, HANK ROBERT; VRIESWIJK, KARIN
To: UNILEVER HOME & PERSONAL CARE USA, DIVISION OF CONOPCO, INC.
Reel/Frame 017405/0759 →