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公开(公告)号：US11708485B2
公开(公告)日：2023-07-25
申请号：US16984867
申请日：2020-08-04
Applicant: Ecolab USA Inc.
Inventor： Suresh R. Sriram , Ramasubramanyam Nagarajan
Abstract: Described herein are treated polymers comprising a polyacrylamide homopolymer or a copolymer thereof having at least 30 mol % acrylamide residue content and a weight average molecular weight in the range of 1×105 g/mol to 1×108 g/mol, and 0.1 wt % to 10 wt % of a C1-C6 alkyl ricinoleate based on the weight of the mixture of polymer and alkyl ricinoleate. The polymers are in powder form and include less than about 30 wt % water based on the powder weight. The treated polymer powders dissolve rapidly in water and develop very little or even no insoluble gel upon diluting with water, even when the water is produced water or connate. The treated polymer solutions are useful for in-the-field rapid dilution for applications such as papermaking, flocculation, beneficiation, wastewater treatment, and enhanced oil recovery.
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公开(公告)号：US11629304B2
公开(公告)日：2023-04-18
申请号：US17525105
申请日：2021-11-12
Applicant: ECOLAB USA INC.
Inventor： Suresh R. Sriram , Nestor U. Soriano, Jr. , Karina Eureste
IPC: C10L1/232 , C07D207/404 , C10L10/04 , C10L10/08
Abstract: Lubricity additives for hydrocarbon fuels are provided according to formula I: wherein n is 1 or 0; each Q is independently selected from oxygen and sulfur; each R is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted; and L is a linking group comprising 0-20 carbons which may be substituted or unsubstituted and may optionally comprise catenary heteroatoms. Fuel mixtures comprising a hydrocarbon fuel; and a lubricity additive according to the present disclosure are also provided. Methods of making lubricity additives comprise reacting an alkenyl succinic anhydrides (ASA's) with certain bisamides or bisthioamides.
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公开(公告)号：US20220154089A1
公开(公告)日：2022-05-19
申请号：US17525105
申请日：2021-11-12
Applicant: ECOLAB USA INC.
Inventor： Suresh R. Sriram , Nestor U. Soriano, JR. , Karina Eureste
IPC: C10L1/232 , C07D207/404 , C10L10/04 , C10L10/08
Abstract: Lubricity additives for hydrocarbon fuels are provided according to formula I: wherein n is 1 or 0; each Q is independently selected from oxygen and sulfur; each R is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted; and L is a linking group comprising 0-20 carbons which may be substituted or unsubstituted and may optionally comprise catenary heteroatoms. Fuel mixtures comprising a hydrocarbon fuel; and a lubricity additive according to the present disclosure are also provided. Methods of making lubricity additives comprise reacting an alkenyl succinic anhydrides (ASA's) with certain bisamides or bisthioamides.
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公开(公告)号：US20210040306A1
公开(公告)日：2021-02-11
申请号：US16984867
申请日：2020-08-04
Applicant: Ecolab USA Inc.
Inventor： Suresh R. Sriram , Ramasubramanyam Nagarajan
Abstract: Described herein are treated polymers comprising a polyacrylamide homopolymer or a copolymer thereof having at least 30 mol % acrylamide residue content and a weight average molecular weight in the range of 1×105 g/mol to 1×108 g/mol, and 0.1 wt % to 10 wt % of a C1-C6 alkyl ricinoleate based on the weight of the mixture of polymer and alkyl ricinoleate. The polymers are in powder form and include less than about 30 wt % water based on the powder weight. The treated polymer powders dissolve rapidly in water and develop very little or even no insoluble gel upon diluting with water, even when the water is produced water or connate. The treated polymer solutions are useful for in-the-field rapid dilution for applications such as papermaking, flocculation, beneficiation, wastewater treatment, and enhanced oil recovery.
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公开(公告)号：US20200338571A1
公开(公告)日：2020-10-29
申请号：US16921021
申请日：2020-07-06
Applicant: Ecolab USA Inc.
Inventor： Jianjun Liu , Suresh R. Sriram , Kevin O'Brien , Daniel N.T. Hay
IPC: B03D1/016
Abstract: Improved sparge compositions for reverse froth flotation separation and uses thereof, and improved methods of reverse froth flotation are described. Described are sparge compositions comprising collectors and beneficiating agents, the collectors comprising sulfonated fatty acids and/or salts thereof, and the beneficiating agents comprising a hydroxy fatty acid composition. The sparge compositions are suitably used in the reverse froth flotation to separate phosphate beneficiary from ores comprising phosphate and dolomite, calcite, silicate, and/or other gangues. The disclosed compositions and methods exhibit improved separation of phosphate from such ores.
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Patent Agency Ranking
公开(公告)号：US20220287161A1
公开(公告)日：2022-09-08
申请号：US17686810
申请日：2022-03-04
Applicant: Ecolab USA Inc.
Inventor： Suresh R. Sriram
Abstract: Described are graphite-containing electrodes comprising zirconium-based coatings, which slow the loss of material from the electrodes when used at high temperatures, for example when used in arc furnaces between 1000 and 2000° C. The zirconium-based coating may be disposed on a graphite-containing surface of the electrode, or on a pre-coating disposed on a surface of the electrode. The zirconium-based coatings include one or more zirconium compounds such as zirconia. Also described are compositions and methods to coat graphite-containing electrodes with zirconium-based coating compositions.
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公开(公告)号：US11359135B2
公开(公告)日：2022-06-14
申请号：US16984782
申请日：2020-08-04
Applicant: Ecolab USA Inc.
Inventor： Suresh R. Sriram , Ramasubramanyam Nagarajan
Abstract: Water-in-oil lattices of water soluble polymers and methods of using the same are presented. The lattices are made, used, and stored having about 15 wt % to 70 wt % polymer solids and further include one or more alkyl ricinoleates. We have found that C1-C6 alkyl ricinoleates added to such lattices facilitate rapid and complete dilution to less than or equal to 1 wt % polymer solids in a continuous water phase. In particular under conditions wherein the water source used to invert the latex is provided at low temperature (−10° C. to 10° C.), or includes a high level of total dissolved solids, or is both low temperature and high total dissolved solids.
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公开(公告)号：US10737281B2
公开(公告)日：2020-08-11
申请号：US15989283
申请日：2018-05-25
Applicant: Ecolab USA Inc.
Inventor： Jianjun Liu , Suresh R. Sriram , Kevin O'Brien , Daniel N.T. Hay
Abstract: Improved sparge compositions for reverse froth flotation separation and uses thereof, and improved methods of reverse froth flotation are described. Described are sparge compositions comprising collectors and beneficiating agents, the collectors comprising sulfonated fatty acids and/or salts thereof, and the beneficiating agents comprising a hydroxy fatty acid composition. The sparge compositions are suitably used in the reverse froth flotation to separate phosphate beneficiary from ores comprising phosphate and dolomite, calcite, silicate, and/or other gangues. The disclosed compositions and methods exhibit improved separation of phosphate from such ores.
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公开(公告)号：US12187970B2
公开(公告)日：2025-01-07
申请号：US18121301
申请日：2023-03-14
Applicant: ECOLAB USA INC.
Inventor： Suresh R. Sriram , Nestor U. Soriano, Jr. , Karina Eureste
IPC: C10L10/04 , C07D207/404 , C10L1/232 , C10L10/08
Abstract: Lubricity additives for hydrocarbon fuels are provided according to formula I: wherein n is 1 or 0; each Q is independently selected from oxygen and sulfur; each R is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted; and L is a linking group comprising 0-20 carbons which may be substituted or unsubstituted and may optionally comprise catenary heteroatoms. Fuel mixtures comprising a hydrocarbon fuel; and a lubricity additive according to the present disclosure are also provided. Methods of making lubricity additives comprise reacting an alkenyl succinic anhydrides (ASA's) with certain bisamides or bisthioamides.
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公开(公告)号：US20230220290A1
公开(公告)日：2023-07-13
申请号：US18121301
申请日：2023-03-14
Applicant: ECOLAB USA INC.
Inventor： Suresh R. Sriram , Nestor U. Soriano, JR. , Karina Eureste
IPC: C10L1/232 , C07D207/404 , C10L10/04 , C10L10/08
CPC classification number: C10L1/232 , C07D207/404 , C10L10/04 , C10L10/08 , C10L2200/0469 , C10L2200/0446
Abstract: Lubricity additives for hydrocarbon fuels are provided according to formula I:
wherein n is 1 or 0; each Q is independently selected from oxygen and sulfur; each R is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted; and L is a linking group comprising 0-20 carbons which may be substituted or unsubstituted and may optionally comprise catenary heteroatoms. Fuel mixtures comprising a hydrocarbon fuel; and a lubricity additive according to the present disclosure are also provided. Methods of making lubricity additives comprise reacting an alkenyl succinic anhydrides (ASA's) with certain bisamides or bisthioamides.
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