Modified polylactic acid, polymeric blends and methods of making the same

Patent metadata

Field	Value
Publication number	US-9550892-B2
Application number	US-201314081073-A
Country	US
Kind code	B2
Filing date	Nov 15, 2013
Priority date	Feb 18, 2011
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

Polymeric compositions and processes of forming the same are discussed herein. The processes generally include contacting a polylactic acid with a reactive modifier selected from epoxy-functionalized polybutadiene, ionic monomer, and combinations thereof.

First claim

What is claimed is:

1. A polymeric composition comprising:
a polylactic acid;
a reactive modifier selected from epoxy-functionalized polybutadiene, ionic monomer, and combinations thereof; and
a polyolefin that exhibits a melt flow rate of less than about 6 dg/min.

2. The polymeric composition of claim 1 , wherein the polylactic acid is selected from poly(D-lactide), poly(L-lactide), poly(DL-lactide), and combinations thereof.

3. The polymeric composition of claim 1 , wherein the polylactic acid has a concentration of from about 2 wt. % to about 98 wt. % based on the total weight of the polymeric composition.

4. The polymeric composition of claim 1 , wherein the reactive modifier has a concentration of from about 2 wt. % to about 30 wt. % based on the total weight of the polymeric composition.

5. The polymeric composition of claim 1 , wherein the reactive modifier is an epoxy-functionalized polybutadiene oligomer.

6. The polymeric composition of claim 5 , wherein the epoxy-functionalized polybutadiene oligomer has a number average molecular weight in a range from about 500 g/mol to about 20000 g/mol.

7. The polymeric composition of claim 1 , wherein the reactive modifier is an ionic monomer.

8. The polymeric composition of claim 7 , wherein the ionic monomer is an organometallic salt having acrylate functional groups.

9. The polymeric composition of claim 1 , wherein the polyolefin is selected from polypropylene, polyethylene, copolymers thereof and combinations thereof.

10. The polymeric composition of claim 1 , wherein the polyolefin has a concentration of from about 2 wt. % to about 98 wt. % based on the total weight of the polymeric composition.

11. The polymeric composition of claim 1 , wherein the polyolefin exhibits a melt flow rate ranging from about 0.5 dg/min.

Assignees

• Fina Technology

Inventors

• Li Fengkui
• Ashbaugh John
• Rauscher David
• Dotter Robert

Classifications

• B29C49/0005

  characterised by the material · CPC title

• C08L23/12 Primary

  Polypropene · CPC title

• C08L23/10

  Homopolymers or copolymers of propene · CPC title

• B29C51/002

  characterised by the choice of material · CPC title

• B29C47/065

  Operations & Transport · mapped topic