Dow Global Technolgoies LLC

Rohm and Haas Company

Ddp Specialty Electronic Materials Us, LLC

Christine McInnis

Terry Michael Williams

Paul O Schook

Usha Gandhi

Bei Yin

Kiran Pareek

Nigel G Watson

Stephen W King

Britt A Vanchura, Ii

Christine Mary Schultz

Peter Jasko, Iii

Robert Marquard

An aqueous composition comprising: (a) at least one 3-isothiazolone; and (b) at least one tertiary amine having three C-Chydroxyalkyl groups, wherein at least one of the hydroxyalkyl groups has a secondary hydroxyl group.

Stabilization of isothiazolones in aqueous compositions

This invention relates to improved water soluble, polyvinyl alcohol based film packaging. More particularly, this invention relates to the use of polyvinyl alcohol based films having a defined crystalline structure, in antimicrobial packaging applications.

Water soluble packaging

A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a Calkyl group. The second component is 4,4-dimethyloxazolidine. The weight ratio of the nonionic surfactant to 4,4-dimethyloxazolidine is from 1:0.0286 to 1:0.1143 or 1:0.32 to 1:0.9143.

Microbicidal composition

A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a mixture of C-Clinear alkyl groups. The second component is tris(hydroxymethyl)nitromethane. The weight ratio of the nonionic surfactant to tris(hydroxymethyl)nitromethane is from 1:0.16 to 1:1.8286.

A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a Calkyl group. The second component is 2-decylthioethylamine. The weight ratio of the nonionic surfactant to 2-decylthioethylamine is from 1:0.004 to 1:0.0137 or 1:0.016 to 1:0.4571.

A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a mixture of C-Clinear alkyl groups. The second component is 2-bromo-2-nitropropane-1,3-diol. The weight ratio of the nonionic surfactant to 2-bromo-2-nitropropane-1,3-diol is from 1:0.08 to 1:0.12 or 1:0.2 to 1:1.8286.

An aqueous microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a mixture of C-Clinear alkyl groups. The second component is a benzoate or sorbate salt. The weight ratio of the nonionic surfactant to the benzoate or sorbate salt is from 1:0.12 to 1:109.7646.

A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a Calkyl group. The second component is 2-methyl-4-isothiazolin-3-one. The weight ratio of the nonionic surfactant to 2-methyl-4-isothiazolin-3-one is from 1:0.005 to 1:1.3714.

An aqueous microbicidal composition having two components. The first component is a nonionic surfactant with structure: RO(CHCH(CH)O)(CHCHO)H, where Ris a Calkyl group. The second component is phenoxyethanol. The weight ratio of the nonionic surfactant to phenoxyethanol is from 1:1 to 1:18.2766.

Systems and methods for monitoring biofilm growth are provided. A method comprises supporting at least one coupon in a water reservoir, wherein the water reservoir feeds water into a tower interior, removing the at least one coupon from the water reservoir, and measuring a level of biofilm growth on the at least one coupon. The level of biofilm growth on the at least one coupon is predictive of a level of biofilm growth within the tower interior. Providing an indicator of predictive biofilm growth may allow measures to be taken to prevent biofilm growth in other sectors or areas of the tower.

Methods and systems for monitoring biofilm growth

An aqueous microbicidal composition having two components. The first component is 0.5-5 wt % of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one. The second component is 1-10 wt % of a nonionic surfactant comprising a C-Calkyl group, an average of 3-7 moles polymerized units of propylene oxide and an average of 5-12 moles polymerized units of ethylene oxide.

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Blue Bell, PA, United States of America

Christine McInnis