Thermoplastic polymer blends comprising dynamically crosslinked polyurethane in an olefin polymer matrix

Patent metadata

Field	Value
Publication number	US-9334395-B2
Application number	US-200913513400-A
Country	US
Kind code	B2
Filing date	Dec 11, 2009
Priority date	Dec 11, 2009
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

Compatibilized blends comprising a first phase comprising a thermoplastic olefin polymer and a second phase comprising a crosslinked, thermoplastic polyurethane are provided. The first phase is a continuous phase and the second phase can be co-5 continuous with the first phase, or dispersed as a non-continuous phase in the first phase. The blends further include a phenolic resole resin which at least partially crosslinks the thermoplastic polyurethane and acts as a compatibilizer for the olefin polymer and the thermoplastic polyurethane.

First claim

The invention claimed is:

1. A compatibilized blend comprising:
(a) a continuous phase comprising a thermoplastic olefin polymer matrix; and
(b) a dispersed phase comprising domains of a thermoplastic polyurethane crosslinked with a phenolic resole resin dispersed as a discontinuous phase in the continuous phase, the phenolic resole resin having the following structure:

wherein n and m=0-15, R′ is an H atom or a CH 2 OH group and R is an alkyl group.

2. The blend of claim 1 , in which the thermoplastic olefin polymer is a non-polar olefin polymer.

3. The blend of claim 1 further comprising at least one flame retardant.

4. The blend of claim 1 further comprising at least one additional compatibilizer.

5. The blend of claim 1 comprising 5 to 75 weight percent thermoplastic olefin polymer, based on the total weight of the blend, 5 to 75 weight percent thermoplastic polyurethane, based on the total weight of blend, and 0.1 to 10 weight percent phenolic resole resin, based on the total weight of blend.

6. The blend of claim 1 , in which the thermoplastic olefin polymer is an ethylene-based polymer.

7. An article comprising the blend of claim 1 .

8. A method of making the compatibilized blend of claim 1 , the method comprising mixing the thermoplastic olefin polymer, the thermoplastic polyurethane and the phenolic resole resin and crosslinking the thermoplastic polyurethane with the phenolic resole resin with continuous mixing.

9. The method of claim 8 , further comprising mixing a functionalized olefin compatibilizer with the thermoplastic olefin polymer, the thermoplastic polyurethane and the phenolic resole resin.

Assignees

• Sun Yabin
• Tai Xiang Yang
• Fan Li Qiang
• Dow Global Technologies Llc

Inventors

• Sun Yabin
• Tai Xiang Yang
• Fan Li Qiang

Classifications

• C08L2666/16

  Addition or condensation polymers of aldehydes or ketones according to C08L59/00 - C08L61/00; Derivatives thereof · CPC title

• C08L23/02 Primary

  not modified by chemical after-treatment · CPC title

• C08L2207/062

  HDPE · CPC title

• C08L75/04

  Polyurethanes · CPC title

• C08L23/26

  modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876) · CPC title