Polymer composition and heat-shrinkable article

Patent metadata

Field	Value
Publication number	US-10035910-B2
Application number	US-201615361805-A
Country	US
Kind code	B2
Filing date	Nov 28, 2016
Priority date	May 28, 2014
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A polymer composition is disclosed. The polymer composition comprises 30 to 40% by weight of a polyester-based thermoplastic elastomer, 15 to 25% by weight of an ethylene acrylic elastomer, and an organic phosphorus-based flame retardant comprising a metal salt of a dialkyl phosphinate.

First claim

What is claimed is:

1. A polymer composition, comprising:
30 to 40% by weight of a polyester-based thermoplastic elastomer;
15 to 25% by weight of an ethylene acrylic elastomer; and
an organic phosphorous-based flame retardant comprising a metal salt of a dialkyl phosphinate.

2. The polymer composition of claim 1 , wherein the polyester-based thermoplastic elastomer comprises a copolymer of polybutylene terephthalate and polyalkylene-ether glycol.

3. The polymer composition of claim 1 , wherein the metal salt is aluminium diethyl phosphinate.

4. The polymer composition of claim 1 , wherein the ethylene acrylic elastomer comprises a terpolymer of ethylene, methyl acrylate, and a cure site monomer.

5. The polymer composition of claim 1 , wherein the organic phosphorous-based flame retardant is 15 to 25% by weight of the composition.

6. The polymer composition of claim 1 , further comprising an antihydrolysis agent.

7. The polymer composition of claim 6 , wherein the antihydrolysis agent is an aromatic polymeric carbodiimide.

8. The polymer composition of claim 1 , further comprising a stabilizing agent.

9. The polymer composition of claim 8 , wherein the stabilizing agent is an aromatic amine type antioxidant.

10. The polymer composition of claim 1 , further comprising a plasticizer.

11. The polymer composition of claim 10 , wherein the plasticizer is a polyester adipate.

12. The polymer composition of claim 1 , further comprising a radiation crosslinking agent.

13. The polymer composition of claim 12 , wherein the radiation crosslinking agent is triallyl cyanurate (TAC), triallyl isocyranurate (TAIC), triallyl trimellitate, triallyl trimesate, tetrallyl pyromellitate, the diallyl ester of 1,1,3,-trimethyl-5-carboxy-3-(4-carboxyphenyl)indene, trimethylolpropane trimellitate (TMPTM), pentaerythritol trimethacrylate, tri(2-acryloxyethyl) isocyanurate, tri(2-methacryloxyethyl) trimellitate, or a combination thereof.

14. The polymer composition of claim 1 , further comprising a smoke suppressant.

15. The polymer composition of claim 14 , wherein the smoke suppressant is zinc borate.

16. A heat shrinkable article, comprising:
a tube or molded part formed from a polymer composition comprising 30 to 40% by weight of a polyester-based thermoplastic elastomer, 15 to 25% by weight of an ethylene acrylic elastomer, and an organic phosphorous-based flame retardant comprising a metal salt of a dialkyl phosphinate.

17. The heat shrinkable article of claim 16 , wherein the tube is an electrically insulating tube.

18. A cable, comprising:
a sheathing or jacket formed from a polymer composition comprising 30 to 40% by weight of a polyester-based thermoplastic elastomer, 15 to 25% by weight of an ethylene acrylic elastomer, and an organic phosphorous-based flame retardant comprising a metal salt of a dialkyl phosphinate.

Assignees

• Tyco Electronics Ltd Uk

Inventors

• Kurup Sreeni

Classifications

• H01B3/447

  from acrylic compounds · CPC title

• H01B7/295

  using material resistant to flame · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title

• C08L23/0869

  with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters · CPC title

• H01B3/307

  Other macromolecular compounds · CPC title