Polyketone resin composition and polyketone resin molded article

Patent metadata

Field	Value
Publication number	US-10844220-B2
Application number	US-201716314825-A
Country	US
Kind code	B2
Filing date	Dec 27, 2017
Priority date	Dec 27, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

The present invention relates to a polyketone resin composition and a polyketone resin molded article produced by using the composition, and particularly to a polyketone resin and a polyketone resin molding which comprise a predetermined content of polyketone and polyalkylene carbonate and thus have enhanced melt stability of polyketone.

First claim

The invention claimed is:

1. A polyketone resin composition comprising:
100 parts by weight of polyketone; and
1 part by weight or more and less than 100 parts by weight of polyalkylene carbonate with respect to 100 parts by weight of the polyketone,
wherein the polyalkylene carbonate includes a repeating unit represented by Chemical Formula 2:

wherein, in Chemical Formula 2,
R 1 to R 4 are each independently hydrogen, a linear or branched alkyl group having 1 to 20 carbon atoms, aryl group having 6 to 20 carbon atoms, an alkenyl group having 1 to 20 carbon atoms or a cycloalkyl group having 3 to 20 carbon atoms; at least two of R 1 to R 4 are optionally connected to each other to form a cycloalkyl group having 3 to 10 carbon atoms; and
m is an integer of 10 to 1,000.

2. The polyketone resin composition according to claim 1 , wherein the polyketone includes at least one repeating unit represented by Chemical Formula 1:

wherein, in Chemical Formula 1,
R is a linear or branched alkylene having 1 to 10 carbon atoms; an arylene having 3 to 10 carbon atoms; an alkylether having 1 to 10 carbon atoms; an arylether having 3 to 10 carbon atoms; an alkylester having 2 to 10 carbon atoms; or an arylester having 4 to 10 carbon atoms, and
n is an integer of 10 to 1000.

3. The polyketone resin composition according to claim 1 , wherein the polyketone is an aliphatic polyketone including ethylene, propylene, isopropylene, or butylene units.

4. The polyketone resin composition according to claim 1 , wherein the polyketone is a binary copolymer or a ternary copolymer.

5. The polyketone, resin composition according to claim 1 , wherein the polyketone has a weight average molecular weight of 10,000 to 1,000,000 g/mol.

6. The polyketone resin composition according to claim 1 , wherein the polyalkylene carbonate has a weight average molecular weight of 10,000 to 1,000,000 g/mol.

7. The polyketone resin composition according to claim 1 , wherein the polyalkylene carbonate is at least one selected from the group consisting of polyethylene carbonate, polypropylene carbonate, polypentene carbonate, polyhexene carbonate, polyoctenecarbonate, polycyclohexene carbonate and a copolymer thereof.

8. The polyketone resin composition according to claim 1 , wherein the composition further comprises 1 to 30 parts by weight of polylactide with respect to 100 parts by weight of the polyketone.

9. The polyketone resin composition according to claim 8 , wherein the polylactide has a weight average molecular weight of 10,000 to 1,000,000 g/mol.

10. The polyketone resin composition according to claim 1 , wherein the composition has a viscosity increase rate of 10% or less within 300 seconds when exposed to a temperature condition of 240° C.

11. A polyketone resin molded article which is produced using the polyketone resin composition of claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Park Seung Young
• Kim Sung-Kyoung

Classifications

• C08L73/00 Primary

  Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups C08L59/00 - C08L71/00; Compositions of derivatives of such polymers · CPC title

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08L67/04

  Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence) · CPC title

• C08G64/02

  Aliphatic polycarbonates · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title