Polymer, method for producing polymer and polymer flocculant

Patent metadata

Field	Value
Publication number	US-11261276-B2
Application number	US-201816196611-A
Country	US
Kind code	B2
Filing date	Nov 20, 2018
Priority date	May 31, 2016
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

Provided is a polymer flocculant which is capable of controlling the structure of a polymer that is a copolymerization product of a monomer (a) having a structure derived from formula (I) in each molecule and a water-soluble unsaturated monomer (b) having a polymerizable unsaturated bond in each molecule, and which has a branched or cross-linking structure, and is excellent in water-solubility and water dispersibility,

In formula (I), R 1 and R 2 are respectively a linear or branched functional group configured of atoms selected from the group consisting of carbon not having a carbon-carbon unsaturated bond, oxygen, nitrogen, and hydrogen; W is a non-metal element of the group 15; X and Y are each a linear or branched functional group configured of atoms selected from the group consisting of carbon, oxygen, nitrogen, and hydrogen, and each have at least one carbon-carbon unsaturated bond, provided that X and Y have different structures; and Z is a chlorine ion, a bromine ion, or an iodine ion.

First claim

The invention claimed is:

1. A copolymer, comprising, in polymerized form:
a cross-linkable monomer (a) of formula (II),

R 10 and R 11 independently being a linear or branched alkyl group comprising 1 to 6 carbon atoms, R 7 being H or a methyl group, R 8 being O or NH, R 9 being C n H 2n with n being in a range of 1 to 6, R 12 being H, a methyl group, or an alkyl ester group having a linear, branched, or cyclic structure comprising 1 to 6 carbon atoms, and Z is a chlorine ion, a bromine ion, or an iodine ion; and
a water-soluble unsaturated monomer (b) having a polymerizable unsaturated bond in the molecule,
wherein, in the copolymer, units from the monomer (a) are in a range of from 0.001 to 1.0% by mass with respect to 100% by mass of units from the monomer (b), and
wherein, when a viscosity of the copolymer is measured by a rotatory viscometer, at a temperature of 25° C. and a rotation rate of 60 rpm, as an aqueous solution of 0.5 mass %, the viscosity is greater than or equal to 5 mPa·s and less than or equal to 10000 mPa·s.

2. A polymer flocculant, comprising:
the copolymer of claim 1 .

3. A paper strengthening agent, comprising:
the copolymer of claim 1 .

4. A method for producing a polymer flocculant including the copolymer of claim 1 , the method comprising:
dissolving the cross-linkable monomer (a) and the water-soluble unsaturated monomer (b) in water; and
polymerizing the cross-linkable monomer (a) and the water-soluble unsaturated monomer (b) dissolved in water in a homogeneous system.

5. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

6. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

7. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

8. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

9. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

10. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

11. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

12. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

13. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

14. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

15. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

16. The copolymer of claim 1 , wherein the cross-linkable monomer (a) of formula (II) comprises

wherein Z is chloride and/or bromide.

17. A copolymer, comprising, in polymerized form:
a cross-linkable monomer (a) of a formula

wherein Z is chloride and/or bromide; and
a water-soluble unsaturated monomer (b) having a polymerizable unsaturated bond in the molecule,
wherein, in the copolymer, units from the monomer (a) are in a range of from 0.001 to 1.0% by mass with respect to 100% by mass of units from the monomer (b).

18. A polymer flocculant, comprising:
the copolymer of claim 17 .

19. A paper strengthening agent, comprising:
the copolymer of claim 17 .

Assignees

• Mitsubishi Chem Corp

Inventors

• MUKUNOKI Kazunori
• Hattori Toshiaki
• SUWABE Shin
• Mori Yasuharu

Classifications

• B01D21/01

  using flocculating agents (for purifying water C02F1/52; for liquid radioactive waste G21F9/10) · CPC title

• C02F2103/28

  from the paper or cellulose industry · CPC title

• C08F20/34

  Esters containing nitrogen {, e.g. N,N-dimethylaminoethyl (meth)acrylate} · CPC title

• C02F1/56

  Macromolecular compounds · CPC title

• C08F220/56

  Acrylamide; Methacrylamide · CPC title