US 11,299,409 B2Granted

Polymer compositions and methods of use

AssigneesKemira Oyj, Chevron U.S.A. Inc.

InventorsLogan Jackson, Thomas J. Lynch, Ronald Robinson, Frances Fournier, Hong Yang, Sukhjit Aujla, Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, David Espinosa, Taimur Malik

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Abstract

Provided herein are liquid polymer (LP) compositions comprising an acrylamide (co)polymer, as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of acrylamide (co)polymer of from about 50 to about 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in dewatering, clarification, flocculation and/or thickening applications, and the like.

Claims15

Dependent claims

A method comprising:

inverting a liquid polymer (LP) composition in an aqueous fluid to provide an inverted polymer solution having a concentration of synthetic (co)polymer of from 50 to 15,000 ppm;
wherein the LP composition comprises (i) one or more hydrophobic liquids, (ii) one or more synthetic (co)polymers, (iii) one or more emulsifying surfactants having an HLB value of from 2 to 10, (iv) one or more inverting surfactants, and (v) water present in an amount of less than 10% by weight based on the total weight of all the components of the LP composition;
wherein the inverted polymer solution has a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter;
and
contacting a process water stream with the inverted polymer solution, wherein the process water stream comprises one or more contaminants, the one or more contaminants comprising solids, silt, metal particles, emulsifiers, cleaners, soaps, solvents, or a combination thereof, and wherein the contacting is effective to dewater, flocculate, clarify, thicken, or coagulate the process water stream.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/781,893Filed 7 Dec 2016 · us provisional application
Priority: 8 Dec 2015
Published: US 2020/0165778 A128 May 2020
Granted: 12 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C02F 1/56
Using organic material: macromolecular compounds
C02F 11/147
With addition of chemical agents: using organic substances
C08F 220/06
Acids; Metal salts or ammonium salts thereof: acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
C08J 3/03
Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques: in aqueous media

Family

Application62/264,703Us provisional application · filed 8 Dec 2015
US 2020/0165778 A1Pre-grant publication · published 28 May 2020
US 11,299,409 B2This patent

From the US filing history. Foreign family members aren’t listed.

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