Polymers having acid and amide moieties, and uses thereof

Patent metadata

Field	Value
Publication number	US-9493598-B2
Application number	US-201113640915-A
Country	US
Kind code	B2
Filing date	Apr 13, 2011
Priority date	Apr 14, 2010
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

Polymers are described that are polymerized from at least one reactive vinyl monomer having acid functionality or a salt thereof, and at least one reactive vinyl monomer having amide functionality. These polymers have a molecular weight from about 500 Da to about 15,000 Da; and may additionally comprise one or more solvent adducts. These polymers may be included in compositions that find use in oilfield applications, such as for inhibition and/or prevention of gas hydrates and/or corrosion.

First claim

What is claimed is:

1. A polymer polymerized from at least one reactive vinyl monomer having acid functionality or a salt thereof wherein said reactive vinyl monomer and functionality is selected from the group consisting of: vinyl sulfonic acids, acrylamido hydrocarbyl sulfonic acids, vinyl phosphonic adds, acrylamido hydrocarbyl phosphonic acids, salts thereof, and blends thereof, and at least one reactive vinyl monomer having amide functionality wherein said vinyl monomer having amide functionality is vinyl caprolactam, wherein the polymer has a molecular weight from about 500 Da to about 15,000 Da.,
said polymer comprising at least one solvent adduct covalently bonded to the polymer in intermediate positions present in an amount from about 0.1% to about 20% by weight of the polymer,
wherein said solvent adduct is obtained from a glycol ether, 2 butoxyethanol, or blends thereof, and said polymer is synthesized in said solvent.

2. The polymer according to claim 1 that is a random, block, graft, or alternating polymer.

3. The polymer according to claim 1 wherein said reactive vinyl monomer containing acid functionality or salt thereof is present from about 0.1% to about 99.9% by weight.

4. The polymer according to claim 1 wherein said vinyl sulfonic acid is selected from the group consisting of: ethenesulfonic acid, 1-propene-1-sulfonic acid, 2-propene-1-sulfonic acid, 2-butene-1-sulfonic acid, 1-butene-1-sulfonic acid, 3-butene-1-sulfonic acid, 3-allyloxy-2-hydroxy-1-propane-sulfonic acid, 3-sulfopropyl acrylate, 2-sulfoethyl acrylate, salts thereof, and blends thereof.

5. The polymer according to claim 1 wherein said acrylamido hydrocarbyl sulfonic acid is selected from the group consisting of: 2-acrylamido-2-methyl propane sulfonic acid, 2-acrylamido-2-ethyl propane sulfonic acid, 2-acrylamido-2-propyl propane sulfonic acid, 2-methacrylamido-2-methyl propane sulfonic acid, 2-methacrylamido-2-ethyl propane sulfonic acid, 2-methacrylamido-2-propyl propane sulfonic acid, N-methyl-2-acrylamido-2-methyl propane sulfonic acid, N-methyl-2-acrylamido-2-ethyl propane sulfonic acid, N-methyl-2-acrylamido-2-propyl propane sulfonic acid, N-methyl-2-methacrylamido-2-methyl propane sulfonic acid, N-methyl-2-methacrylamido-2-ethyl propane sulfonic acid, N-methyl-2-methacrylamido-2-propyl propane sulfonic acid, 2-acrylamido-1-butane sulfonic acid, 2-acrylamido-1-pentane sulfonic acid, 2-acrylamido-1-hexane sulfonic acid, 2-methacrylamido-1-butane sulfonic acid, 2-methacrylamido-1-pentane sulfonic acid, 2-methacrylamido-1-hexane sulfonic acid, 2-acrylamido-1-heptane sulfonic acid, 2-methacrylamido-1-heptane sulfonic acid, N-methyl-2-acrylamido-1-butane sulfonic acid, N-methyl-2-methacrylamido-1-butane sulfonic acid, N-methyl-2-acrylamido-1-pentane sulfonic acid, N-methyl-2-methacrylamido-1-pentane sulfonic acid, N-methyl-2-acrylamido-1-hexane sulfonic acid, N-methyl-2-methacrylamido-1-hexane sulfonic acid, N-methyl-2-acrylamido-1-heptane sulfonic acid, N-methyl-2-methacrylamido-1-heptane sulfonic acid, salts thereof, and blends thereof.

6. The polymer according to claim 1 wherein said acrylamido hydrocarbyl phosphonic acid is selected from the group consisting of: 2-acrylamido-2-methyl propane phosphonic acid, 2-acrylamido-2-ethyl propane phosphonic acid, 2-acrylamido-2-propyl propane phosphonic acid, 2-methacrylamido-2-methyl propane phosphonic acid, 2-methacrylamido-2-ethyl propane phosphonic acid, 2-methacrylamido-2-propyl propane phosphonic acid, N-methyl-2-acrylamido-2-methyl propane phosphonic acid, N-methyl-2-acrylamido-2-ethyl propane phosphonic acid, N-methyl-2-acrylamido-2-propyl propane phosphonic acid, N-methyl-2-methacrylamido-2-methyl propane phosphonic acid, N-methyl-2-methacrylamido-2-ethyl propane phosphonic acid, N-methyl-2-methacrylamido-2-propyl propane phosphonic acid, 2-acrylamido-1-butane phosphonic acid, 2-acrylamido-1-pentane phosphonic acid, 2-acrylamido-1-hexane phosphonic acid, 2-methacrylamido-1-butane phosphonic acid, 2-methacrylamido-1-pentane phosphonic acid, 2-methacrylamido-1-hexane phosphonic acid, 2-acrylamido-1-heptane phosphonic acid, 2-methacrylamido-1-heptane phosphonic acid, N-methyl-2-acrylamido-1-butane phosphonic acid, N-methyl-2-methacrylamido-1-butane phosphonic acid, N-methyl-2-acrylamido-1-pentane phosphonic acid, N-methyl-2-methacrylamido-1-pentane phosphonic acid, N-methyl-2-acrylamido-1-hexane phosphonic acid, N-methyl-2-methacrylamido-1-hexane phosphonic acid, N-methyl-2-acrylamido-1-heptane phosphonic acid, N-methyl-2-methacrylamido-1-heptane phosphonic acid, salts thereof, and blends thereof.

7. The polymer according to claim 1 wherein said reactive vinyl monomer containing amide functionality is present from about 0.1% to about 99.9% by weight.

8. A composition comprising the polymer according to claim 1 .

9. The composition according to claim 8 further comprising at least one additive selected from the group consisting of: gas hydrate inhibitors, corrosion inhibitors, rheology modifiers, wax inhibitors, solvents, biocides, emulsifiers, demulsifiers, surfactants, shale-swell inhibitors, defoamers, scale inhibitors, cementing fluids, fluid loss additives, drilling fluids, viscosifiers, and blends thereof.

10. The composition according to claim 8 wherein said polymer is selected from the group consisting of: poly(N-vinyl-2-caprolactam-co-vinyl phosphoric acid), poly(N-vinyl-2-caprolactam-ter-N-vinyl-2-pyrrolidone-ter-vinyl phosphonic acid), poly(N-vinyl-2-caprolactam-co-2-acrylamido-2-methyl propane sulfonic add), poly(N-vinyl-2-caprolactam-ter-N-vinyl-2-pyrrolidone-ter-2-acrylamido-2-methyl propane sulfonic add), salts thereof, and blends thereof.

11. A method for preventing the formation of gas hydrates, or for reducing the growth of gas hydrates, or for reducing the tendency of gas hydrates to agglomerate in a fluid comprising water and at least one hydrate-forming guest molecule, said method comprising contacting said fluid with a composition comprising the polymer according to claim 1 .

12. The method according to claim 11 wherein said polymer is present in an amount from about 0.01% to about 5% based on weight of said water present in said fluid.

13. A method for preventing or reducing corrosion of materials comprising iron in contact with a fluid, said method comprising contacting said fluid with a composition comprising the polymer according to claim 1 .

14. The method according to claim 13 wherein said polymer is present in an amount from about 0.1 ppm to about 5000 ppm based on said fluid.

15. The polymer according to claim 1 , wherein the polymer has the structure set out below:

wherein m and n independently range from about 500 Da to about 15,000 Da.

16. The polymer according to claim 1 , wherein the polymer has the structure set out below:

wherein m and n independently range from about 500 Da to about 15,000 Da.

17. The polymer according to claim 1 , wherein the polymer has the structure set out below:

wherein m and n independently range from about 500 Da to about 15,000 Da.

Assignees

• Musa Osama M
• Lei Cuiyue C
• Isp Investments Llc

Inventors

• Musa Osama M
• Lei Cuiyue C

Classifications

• C09K15/30

  containing heterocyclic ring with at least one nitrogen atom as ring member · CPC title

• C08F226/06 Primary

  by a heterocyclic ring containing nitrogen · CPC title

• C09K8/52

  Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning · CPC title

• C08F230/02

  containing phosphorus · CPC title