Electrostatic dissipative polyester TPU and compositions thereof

Patent metadata

Field	Value
Publication number	US-10000624-B2
Application number	US-201615277216-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Oct 15, 2009
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

The present invention relates to an electrostatic dissipative thermoplastic polyurethane composition made by reacting (a) at least one polyester polyol intermediate with (b) at least one diisocyanate and (c) at least one chain extender. The polyester polyol intermediate, may be derived from at least one dialkylene glycol and at least one dicarboxylic acid, or an ester or anhydride thereof. The invention further provides for methods of making said thermoplastic polyurethane composition, polymer blends containing said thermoplastic and polymer articles made from said thermoplastic.

First claim

We claim:

1. An electrostatic dissipative thermoplastic polyurethane composition made by reacting (a) at least one polyester polyol intermediate with (b) at least one diisocyanate and (c) at least one chain extender; and wherein the composition further comprises tri-n-butylmethylammonium bis-(trifluoroethanesulfonyl)imide.

2. The composition of claim 1 , wherein (a), the polyester polyol component, is substantially free of polyether polyols.

3. The composition of claim 1 , further comprising at least one base polymer.

4. The composition of claim 3 , wherein the base polymer comprises: a polyolefin; a styrenic; a thermoplastic polyurethane, a polyamide; an acrylic polymer; a polyvinylchloride, a chlorinated polyvinylchloride; a polyoxymethylene; a polyester; a polycarbonate; a polyphenylene oxide; polyphenylene sulfide; or combinations thereof.

5. A shaped polymeric article comprising the electrostatic dissipative thermoplastic polyurethane composition of claim 1 .

6. The polymeric article of claim 5 , wherein the article comprises: packaging materials for ESD sensitive semiconductor and electronic parts; durable or consumable parts for clean room equipment and applications; construction materials for clean rooms and datacenters; fibers; laminated sheets; conveyor belts; pharmaceutical products; medical devices; electronic components; separators for use in the construction of lithium-ion batteries; polymer electrolyte membranes for use in the construction of lithium-polymer batteries and fuel cells; or combinations thereof.

Assignees

• Lubrizol Advanced Mat Inc

Inventors

• Lu Qiwei
• Eckstein Yona
• Meltzer Donald A

Classifications

• H01M50/494

  Tensile strength · CPC title

• H01M50/489

  Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties · CPC title

• H01M50/414

  Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title

• C08L67/00

  Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers · CPC title

• C08L23/02

  not modified by chemical after-treatment · CPC title