Fibrillated polymer compositions and methods of their manufacture

Patent metadata

Field	Value
Publication number	US-10400080-B2
Application number	US-201615556690-A
Country	US
Kind code	B2
Filing date	Mar 16, 2016
Priority date	Mar 16, 2015
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

The disclosure is directed to polymer compositions comprising a matrix polymer component comprising a crystalline or semi-crystalline polymer; and a fibrillated fluoropolymer, a fibrillated fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof. Methods of preparing and using these polymer compositions, as well as articles comprising the polymer compositions, as also described.

First claim

What is claimed:

1. A polymer composition consisting of:
a matrix polymer component consisting of polybutylene terephthalate, polyethylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, or a combination thereof
0.1 wt. % to 15 wt. %, based on the weight of the polymer composition, of a fibrillated fluoropolymer consisting of styrene acrylonitrile copolymer encapsulated polytetrafluoroethylene; and
an additional additive component consisting of one or more fillers, lubricants, pigments, dyes, colorants, UV stabilizers, antioxidants, plasticizers, anti-static agents, or blowing agents,
wherein the composition has a complex viscosity, measured at a 0.1 rad/sec, of between 4500 Pa·s and 70,000 Pa·s, measured at a temperature of between 230° C. and 260° C., or
wherein the composition has an extensional viscosity of between 11,000 and 90,000 Pa·s at a maximum Henky strain of 2.0 at a strain rate of 1s −1 , measured at a temperature of between 230° C. and 260° C.

2. The polymer composition of claim 1 , wherein the matrix polymer component is polybutylene terephthalate.

3. The polymer composition of claim 1 , wherein the matrix polymer component is polyethylene terephthalate.

4. The polymer composition of claim 1 , comprising 1 wt. % to 10 wt. %, based on the weight of the polymer composition, of the fibrillated fluoropolymer.

5. The polymer composition of claim 1 , having a tensile modulus of greater than 2450 MPa to 3000 MPa.

6. The polymer composition of claim 1 , having a notched impacted strength of greater than 3.5 KJ/m 2 to 10 KJ/m 2 .

7. An article comprising the composition of claim 1 .

8. The article of claim 7 , produced using a process comprising foaming, sheet forming, or pipe extrusion.

9. A method comprising subjecting a polymer composition of claim 1 to a process comprising foaming, sheet forming, or pipe extrusion.

Assignees

• Sabic Global Technologies Bv

Inventors

• Ramakrishnan Vaidyanath
• Gaggar Satish Kumar
• Bihari Malvika
• CUSTODIO Frederico Marques Ferreira
• Goossens Johannes Martinus Dina

Classifications

• C08L77/00

  Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers · CPC title

• C08L65/00

  Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain (C08L7/00 - C08L57/00, C08L61/00 take precedence); Compositions of derivatives of such polymers · CPC title

• C08J9/141

  Hydrocarbons · CPC title

• C08G2261/512

  Hole transport · CPC title

• C08J9/0061

  characterized by the use of several polymeric components · CPC title