Polyester for profile extrusion and/or pipe extrusion

Patent metadata

Field	Value
Publication number	US-2019203037-A1
Application number	US-201716330501-A
Country	US
Kind code	A1
Filing date	Aug 28, 2017
Priority date	Sep 14, 2016
Publication date	Jul 4, 2019
Grant date	—

Abstract

Thermoplastic molding compositions containing
A) from 29 to 99.99% by weight of a polyester, B) from 0.01 to 10% by weight of an ionomer composed of at least one copolymer of B 1 ) from 30 to 99.9% by weight of ethylene B 2 ) from 0 to 60% by weight of 1-octene or 1-butene or propylene or a mixture of these and B 3 ) from 0.01 to 70% by weight of functional monomers, where the functional monomers are selected from the group of the carboxylic acid groups, carboxylic anhydride groups, carboxylic ester groups and mixtures of these, where component B) has been neutralized to an extent of at least 20% with alkali metal ions, based on 100% by weight of A) and B), and C) from 0 to 70% by weight of other additional substances, where the sum of the % by weight values for A) to C) is 100%, for use in the production of cable sheathing or optical-conductor sheathing via blow molding, profile extrusion, and/or pipe extrusion.

First claim

1 . A thermoplastic molding composition comprising, as essential components,
A) from 29 to 99.99% by weight of a polyester, B) from 0.01 to 10% by weight of an ionomer composed of at least one copolymer of
B 1 ) from 30 to 99.9% by weight of ethylene
B 2 ) from 0 to 60% by weight of 1-octene or 1-butene or propylene or a mixture of these, and
B 3 ) from 0.01 to 70% by weight of functional monomers, where the functional monomers are selected from the group of the carboxylic acid groups, carboxylic anhydride groups, carboxylic ester groups, and mixtures of these,
where component B) has been neutralized to an extent of at least 20% with alkali metal ions, based on 100% by weight of A) and B), and C) from 0 to 70% by weight of other additional substances, where the sum of the % by weight values for A) to C) is 100%, for use in the production of cable sheathing or optical-conductor sheathing via blow molding, profile extrusion, and/or pipe extrusion.

2 . The composition for use according to claim 1 , where the alkali metal of component B) comprises sodium or potassium or of a mixture of these.

3 . The composition for use according to claim 1 , where the intrinsic viscosity (IV) of component A) in accordance with ISO 1628 is at least 140 ml/g.

4 . The composition for use according to claim 1 , where the carboxy end group content of component A) is from 10 to 50 meq/kg of polyester.

5 . The composition for use according to claim 1 , where component B) has been neutralized to an extent of at least 50%.

6 . The composition for use according to claim 1 , where component B 3 ) comprises an ethylenically unsaturated mono- or dicarboxylic acid or of a functional derivative of such an acid.

7 . The composition for use according to claim 1 , where component B 3 ) comprises acrylic acid, methacrylic acid, maleic anhydride, maleic acid, or fumaric acid, or of a (meth)acrylate having from 1 to 18 C atoms.

8 . The use according to claim 1 , where component B) comprises
B 1 ) from 35 to 89.95% by weight of ethylene B 2 ) from 10 to 60% by weight of 1-octene or 1-butene or propylene or a mixture of these and B 3 ) from 0.05 to 50% by weight of functional monomers according to claim 1 .

9 . The composition for use according to claim 1 , where component B) comprises
B 1 ) from 50 to 98% by weight of ethylene B 2 ) from 0 to 50% by weight of 1-octene or 1-butene or propylene or a mixture of these and B 3 ) from 2 to 50% by weight of functional monomers according to claim 1 .

10 . A cable sheathing or optical-conductor sheathing obtained according to the thermoplastic molding composition according to claim 1 .

Assignees

• Basf Se

Inventors

• Kniesel Simon
• Klenz Rainer

Classifications

• H01B3/441

  from alkenes · CPC title

• H01B3/421

  Polyesters · CPC title

• C08L67/02 Primary

  Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title

• C08L2203/206

  use in coating or encapsulating of electronic parts · CPC title

• H01B3/447

  from acrylic compounds · CPC title