IP Library › Granted Patent US 6,902,727
Granted Patent B2
US 6,902,727 · App. 10/411,452 · Granted Jun 7, 2005

Biocidal mixture of 2-propenal-releasing polymer and isothiazolones

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Quick Facts
Patent No.
US 6,902,727
App. No.
10/411,452
Granted
Jun 7, 2005
Kind
B2
Abstract

A synergistic biocidal composition comprising a mixture of 2-propenal polymer (APC) and 5-chloro-2-methyl-4-isothiazoline-3-one (CIT) and 2-methyl-4-isothiazoline-3-one (MIT).

Claims (11)

1. A microbial composition to control the growth of a microorganism selected from the group consisting of bacteria, fungi, yeast and algae comprising a synergistically microbiocidally effective mixture consisting of 2-propenal polymer or copolymer (APC), and 5-chloro-2-methyl-4-isothiazoline-3-one (CIT) and 2-methyl-4-isothiazoline-3-one (MIT).

2. The composition of claim 1 , wherein the weight ratio of APC to CIT/MIT is from about 5,000:1 to about 1:1.

3. The composition of claim 1 , wherein the weight ratio of APC to CIT/MIT is from about 500:1 to about 1:1.

4. The composition of claim 1 , wherein the weight ratio of APC to CIT/MIT is from about 30:1 to about 1:1.

5. The composition of claim 1 , wherein a glycol carrier is employed.

6. The composition of claim 5 , wherein the carrier is propylene glycol.

7. The composition of claim 5 , wherein the carrier is ethylene glycol.

8. A method of controlling the growth of bacteria, yeast, fungi and algae in an aqueous formulation which comprises adding to said aqueous formulation a synergistically effective amount of a mixture consisting of 2-propenal polymer or copolymer (APC), and 5-chloro-2-methyl-4-isothiazoline-3-one (CIT) and 2-methyl-4-isothiazoline-3-one (MIT).

9. The method of claim 8 , wherein the weight ratio of APC to CIT/MIT is from about 5,000:1 to about 1:1.

10. The method of claim 8 , wherein the weight ratio of APC to CIT/MIT is from about 500:1 to about 1:1.

11. The method of claim 8 , wherein the weight ratio of APC to CIT/MIT is from about 30:1 to about 1:1.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 14, 2015
From: ISP INVESTMENTS INC.
To: TROY TECHNOLOGY II, INC.
Reel/Frame 036329/0802 →
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 →