Solution comprising an associative polymer and a cyclodextrin polymer

Patent metadata

Field	Value
Publication number	US-11708481-B2
Application number	US-201816772737-A
Country	US
Kind code	B2
Filing date	Dec 13, 2018
Priority date	Dec 13, 2017
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

A solution including an associative polymer, a cyclodextrin polymer, and a solvent is provided. The associative polymer is a powder in the absence of the solvent. Additionally, a method of making down an associative polymer powder to form a solution is provided. The method includes blending a mixture of the powder, a cyclodextrin polymer, and a solvent to yield the solution, wherein the powder includes particles having been dry-cut to a median particle size of from about 200 microns to about 10,000 microns. Additionally, a powder product is provided. The powder product includes from about 80 wt. % to about 99.9 wt. % associative polymer; and from about 0.1 wt. % to about 20 wt. % of a cyclodextrin polymer.

First claim

The invention claimed is:

1. A solution comprising:
(a) an associative polymer,
(b) a cyclodextrin polymer, and
(c) a solvent,

wherein the associative polymer is of formula AP 3 :

wherein E is one or more associative monomer unit(s), E″ is a mole percentage value of from about 0.005 to about 10, F is one or more additional monomer unit(s), F″ is a mole percentage value of from about 0.005 to about 90, G is one or more monomer unit(s) derived from a monomer of Formula I, G″ is a mole percentage value of from about 10 to about 99.99, H is one or more piperidine-2,6-dione unit(s), and H″ is a mole percentage value of from about 0 (i.e., trace amounts) to about 10,

wherein Formula I is:

wherein R 1 is H or C 1 -C 4 alkyl, and each R 2 is independently H or an organic group.

2. The solution of claim 1 , wherein the associative polymer has a weight average molecular weight of from about 10 kDa to about 20,000 kDa.

3. The solution of claim 1 , wherein the cyclodextrin polymer comprises a cyclodextrin monomer unit selected from α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, or a combination thereof.

4. The solution of claim 1 , wherein the cyclodextrin polymer comprises a cyclodextrin monomer unit selected from any one or more of methyl, ethyl, propyl, vinyl, propenyl, acetyl, hydroxypropyl, and hydroxyethyl derivatives of α-cyclodextrin, β-cyclodextrin and γ-cyclodextrin, or a combination thereof.

5. The solution of claim 1 , wherein the molar ratio of the sum total cyclodextrin monomer units in the cyclodextrin polymer to the sum total of associative monomer units in the associative polymer is from about 1:1 to about 50:1, optionally wherein the solvent is water.

6. The solution of claim 1 , wherein the solution comprises from about 0.1 wt. % to about 10 wt. % of the associative polymer.

7. A powder product comprising:
from about 80 wt. % to about 99.9 wt. % associative polymer powder; and
from about 0.1 wt. % to about 20 wt. % of a cyclodextrin polymer,
wherein the associative polymer powder comprises an associative polymer of formula AP 1 :

wherein E is one or more associative monomer unit(s), F is one or more additional monomer unit(s), G is one or more monomer unit(s) derived from a monomer of Formula I, H is optionally present and is one or more piperidine-2,6-dione unit(s),
wherein the one or more piperidine-2,6-dione(s) are formed upon cyclization of an acrylamide nitrogen of the monomer unit derived from a monomer of Formula I (“G”) on a carbonyl of the additional monomer unit (“F”),
wherein Formula I is:

wherein R 1 is H or C 1 -C 4 alkyl, and each R 2 is independently H or an organic group.

8. The powder product of claim 7 comprising:
from about 90 wt. % to about 99 wt. % associative polymer powder; and
from about 1 wt. % to about 10 wt. % of the cyclodextrin polymer.

9. The powder product of claim 7 , wherein H is not present, and the associative polymer is of the formula AP 2 :

wherein E is one or more associative monomer unit(s), E′ is a mole percentage value of from about 0.005 to about 10, F is one or more additional monomer unit(s), F′ is a mole percentage value of from about 0.005 to about 90, G is one or more monomer unit(s) derived from a monomer of Formula I, and G′ is a mole percentage value of from about 10 to about 99.99.

10. The powder product of claim 7 , wherein H is present, and the associative polymer is of the formula AP 3 :

wherein E is one or more associative monomer unit(s), E″ is a mole percentage value of from about 0.005 to about 10, F is one or more additional monomer unit(s), F″ is a mole percentage value of from about 0.005 to about 90, G is one or more monomer unit(s) derived from a monomer of Formula I, G″ is a mole percentage value of from about 10 to about 99.99, H is one or more piperidine-2,6-dione unit(s), and H″ is a mole percentage value of from about 0 (i.e., trace amounts) to about 10.

11. The powder product of claim 7 , wherein the associative polymer has a weight average molecular weight of from about 10 kDa to about 20,000 kDa.

12. The powder product of claim 7 , wherein the cyclodextrin polymer comprises a cyclodextrin monomer unit selected from α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, or a combination thereof.

13. The powder product of claim 7 , wherein the molar ratio of the sum total cyclodextrin monomer units in the cyclodextrin polymer to the sum total of associative monomer units in the associative polymer is from about 1:1 to about 50:1.

Assignees

• Ecolab Usa Inc

Inventors

• Huang Heqing
• Wei Mingli
• Huang Xiaodong
• Yuan Jianwei
• Jordan David
• Cheng Weiguo

Classifications

• C08L5/16 Primary

  Cyclodextrin; Derivatives thereof · CPC title