Granted Patent
B2
US 7,273,838 · App. 10/963,269 · Granted Sep 25, 2007
Laundry detergent formulation including dirt suspending agent comprising benzalkonium chloride and isobutylene-maleic anhydride
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Abstract
A laundry detergent formulation includes a dirt suspending agent which is a blend of an anionic material, such as an anionic polymer, and a quaternary ammonium salt. This suspending agent prevents redeposition of dirt which is removed from clothing by a laundry detergent from redepositing onto cleaned clothes during the wash cycle, while allowing it to be removed completely during the rinse cycle.
Claims (2)
1. A dirt suspending agent for use in a laundry detergent formulation which comprises a blend of (a) isobutylene-maleic anhydride copolymer and (b) benzalkonium chloride wherein the molar ratio of component a to component b (a:b) is in a range from 50:50 to 80:20.
2. A laundry detergent formulation including the dirt suspending agent of claim 1 .
Assignments (4)
RELEASE OF PATENT SECURITY AGREEMENT
Recorded Mar 18, 2013
From: THE BANK OF NOVA SCOTIA
To: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; AQUALON COMPANY; ISP INVESTMENTS INC.; HERCULES INCORPORATED
Reel/Frame 030025/0320 →
PATENT RELEASE
Recorded Sep 19, 2011
From: JPMORGAN CHASE BANK, N.A. (F/K/A THE CHASE MANHATTAN BANK)
To: ISP CAPITAL, INC.; ISP CHEMICAL PRODUCTS, INC.; VERONA, INC.
Reel/Frame 026930/0774 →
SECURITY AGREEMENT
Recorded Sep 16, 2011
From: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; HERCULES INCORPORATED; AQUALON COMPANY; ISP INVESTMENT INC.
To: THE BANK OF NOVA SCOTIA, AS ADMINISTRATIVE AGENT
Reel/Frame 026918/0052 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Oct 12, 2004
From: SHAH, PURVITA; JUREK, MICHAEL J.
To: ISP INVESTMENTS INC.
Reel/Frame 015923/0078 →