Lignin-containing polymers and compositions including lignin-containing polymers

Patent metadata

Field	Value
Publication number	US-9914870-B2
Application number	US-201414762332-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Jan 22, 2013
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A composition includes an agent formed by grafting at least a first polymer with lignin and a component other than the agent, lignin or the at least a first polymer, wherein lignin has an affinity for the component. A method of dispersing a component in a matrix includes adding an agent to the matrix. The agent is formed by grafting at least a first polymer with lignin. The first polymer has an affinity for the matrix. Lignin has an affinity for the component. The component is other than the agent, lignin or the at least a first polymer. The method for includes contacting the matrix with the component.

First claim

What is claimed is:

1. A method of dispersing a component in a matrix, comprising: adding an agent to the matrix, the agent being formed by reacting at least one molecule of a first polymer comprising single terminal reactive group with a group on a lignin core comprising a single lignin particle to graft at least one chain of the first polymer onto the lignin core so that the agent comprises the lignin core and a corona comprising the at least one chain of the first polymer, the first polymer having an affinity for the matrix, lignin having an affinity for the component, wherein the component is other than the agent, lignin or the first polymer, and contacting the matrix with the component.

2. The method of claim 1 wherein the first polymer is formed via controlled radical polymerization.

3. The method of claim 1 wherein the first polymer is formed via atom transfer radical polymerization (ATRP), nitroxide-mediated polymerization (NMP), reversible addition fragmentation chain transfer (RAFT) and catalytic chain transfer (CCT), ring-opening polymerization (ROP) or ring-opening metathesis polymerization (ROMP).

4. The method of claim 1 wherein the matrix is a non-polymeric matrix.

5. The method of claim 4 wherein the non-polymeric matrix is a solid matrix, a liquid matrix or a multiphase matrix.

6. The method of claim 4 wherein the non-polymeric matrix is an aqueous matrix and the first polymer is a hydrophilic polymer or the non-polymeric matrix is an oleophilic matrix and the first polymer is a hydrophobic polymer.

7. The method of claim 6 wherein the matrix is an aqueous matrix and the first polymer is a hydrophilic polymer.

8. The method of claim 7 wherein the hydrophilic polymer is a polyalkylene oxide.

9. The method of claim 8 wherein the hydrophilic polymer is a polyethylene glycol.

10. The method of claim 7 wherein the matrix and the agent forms a dispersing agent for use in subterranean hydrocarbon recovery.

11. The method of claim 1 wherein the agent is formed by reacting a terminal reactive group of each of a plurality of the first polymer with one of a plurality of groups on the lignin core to graft a plurality of chains of the first polymer onto the lignin core so that the agent comprises the lignin core and the corona comprises the plurality of chains of the first polymer extending from the corona core.

Assignees

• Univ Carnegie Mellon

Inventors

• Washburn Newell R
• Chung Hoyong

Classifications

• C08H6/00

  Macromolecular compounds derived from lignin, e.g. tannins, humic acids · CPC title

• C09K8/588 Primary

  characterised by the use of specific polymers {(polymeric surfactants C09K8/584)} · CPC title

• C08F2438/01

  Atom Transfer Radical Polymerization [ATRP] or reverse ATRP · CPC title

• C08F291/04

  on to halogen-containing macromolecules · CPC title

• C08F251/02

  on to cellulose or derivatives thereof · CPC title