Patents Assigned to BWA WATER ADDITIVES UK LIMITED
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Patent number: 10538442Abstract: The present invention relates to water treatment. In one embodiment there is provided a method of treating an aqueous system to inhibit growth of one or more micro-organisms therein and/or to reduce the number of live micro-organisms therein. The method comprises adding treatment agents to said aqueous system and wherein said treatment agents comprise: (a) a phosphonium compound; and (b) a halogen oxide compound.Type: GrantFiled: August 31, 2015Date of Patent: January 21, 2020Assignee: BWA WATER ADDITIVES UK LIMITEDInventor: Jeffrey Frank Kramer
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Patent number: 10480125Abstract: Embodiments of the present subject matter provide a biocidal composition comprising an aqueous mixture of (a) a phosphonium compound and (b) a polymeric ammonium compound, wherein the weight ratio of compound (a) to compound (b) is from 0.2:1 to 20:1, and wherein the phosphonium compound (a) has formula: wherein each R is independently a C1-C6 alkyl group which is unsubstituted or substituted by a cyano, hydroxyl, esterified hydroxyl or aryl group; R1 represents a C8-C18 alkyl group which is substituted or unsubstituted; and X represents either chlorine or bromine; and wherein the polymeric ammonium compound (b) comprises the repeat unit: wherein each R2 is independently a C1-C2 alkyl group which is substituted or unsubstituted; R3 represents a C2-C18 alkyl or alkenyl group which is substituted or unsubstituted; and R4 represents a C2-C18 alkyl or alkenyl group which is substituted or unsubstituted, a diethyl ether group, an isopropanol group, a N,N-dipropylurea group, or a 2-butene group.Type: GrantFiled: March 6, 2009Date of Patent: November 19, 2019Assignee: BWA WATER ADDITIVES UK LIMITEDInventors: Jeffrey Kramer, Suresh Patel, Sylvie Gascoigne
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Patent number: 10214684Abstract: The present invention relates to friction reducers and to well treatment fluids. In one embodiment there is provided a friction reducing composition comprising (a) a phosphonium compound and (b) a polymeric friction reducer. In a further embodiment there is provided a well treatment fluid comprising a phosphonium compound.Type: GrantFiled: September 30, 2015Date of Patent: February 26, 2019Assignee: BWA WATER ADDITIVES UK LIMITEDInventor: Jeffrey Frank Kramer
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Patent number: 10004233Abstract: The present invention relates to water treatment. In one embodiment there is provided a method of treating an aqueous system to inhibit growth of one or more micro-organisms therein and/or to reduce the number of live micro-organisms therein. The method comprises adding treatment agents to said aqueous system and wherein said treatment agents comprise: (a) a phosphonium compound; and (b) an oxazolidine compound.Type: GrantFiled: October 1, 2015Date of Patent: June 26, 2018Assignee: BWA Water Additives UK LimitedInventor: Jeffrey Frank Kramer
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Patent number: 9957173Abstract: The present invention relates to water treatment. In one embodiment there is provided a method of treating an aqueous system to inhibit growth of one or more micro-organisms therein and/or to reduce the number of live micro-organisms therein. The method comprises adding treatment agents to said aqueous system and wherein said treatment agents comprise: (a) a phosphonium compound; and (b) an nitro compound.Type: GrantFiled: October 8, 2015Date of Patent: May 1, 2018Assignee: BWA Water Additives UK LimitedInventors: Jeffrey Frank Kramer, Christy Colleen Wentworth
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Publication number: 20170327391Abstract: The present invention relates to water treatment. In one example, there is provided a method of treating an aqueous system to inhibit growth of one or more micro-organisms therein and/or to reduce the number of live micro-organisms therein. The method includes adding treatment agents to an aqueous system wherein said treatment agents include: (a) a phosphonium compound; and (b) a compound having formula: M(XO2)n wherein: M is a Group I or Group II metal; X is a halogen; and n is 1 or 2.Type: ApplicationFiled: May 12, 2016Publication date: November 16, 2017Applicant: BWA WATER ADDITIVES UK LIMITEDInventors: JEFFREY FRANK KRAMER, CHRISTY COLLEEN WENTWORTH