Articles and structures with colorable anti-static polyetherimide blends

Patent metadata

Field	Value
Publication number	US-12227648-B2
Application number	US-202218562984-A
Country	US
Kind code	B2
Filing date	May 27, 2022
Priority date	May 28, 2021
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

Disclosed herein are polymer compositions comprising from about 1 wt. % to about 99 wt. % of a polyetherimide resin; from about 1 wt. % to about 70 wt. % of a crystalline polyester resin; from about 0.1 wt. % to about 50 wt. % of an inherently dissipative polymer; and from about 0.001 wt. % to about 10 wt. % of a transesterification inhibitor. The combined weight percent value of all components does not exceed about 100 wt. %, and all weight percent values are based on the total weight of the polymer composition. The polymer composition may exhibit a surface resistivity of from 1×109 ohms to 9×1010 ohms when measured in accordance with ASTM D257.

First claim

The invention claimed is:

1. A polymer composition comprising:
from about 40 wt. % to about 80 wt. % of a polyetherimide resin;
from about 1 wt. % to about 40 wt % of a crystalline polyester resin;
from about 15 wt. % to about 45 wt. % of an inherently dissipative polymer; and
from about 0.001 wt. % to about 10 wt. % of a transesterification inhibitor,
wherein the polymer composition exhibits a surface resistivity of from 1×10 9 ohms to 9×10 10 ohms when measured in accordance with ASTM D257 and a volume resistivity of from 1×10 8 to 9×10 9 ohms cm in accordance with ASTM D257, and
wherein the combined weight percent value of all components does not exceed about 100 wt. %, and all weight percent values are based on the total weight of the polymer composition.

2. The polymer composition of claim 1 , wherein the polyetherimide resin has a flow rate of from about 8 cm 3 /10 min to about 20 cm 3 /10 min at 340° C./5.0 kg.

3. The polymer composition of claim 1 , wherein the crystalline polyester resin comprises polybutylene terephthalate, polyethylene terephthalate, or 1,4-cyclohexanedimethyl-1,4-cyclohexanedicarboxylate), or a combination thereof.

4. The polymer composition of claim 1 , wherein the inherently dissipative polymer is ion-doped.

5. The polymer composition of claim 1 , wherein the inherently dissipative polymer comprises a nylon-based multi-block copolymer doped with ions.

6. The polymer composition of claim 1 , wherein the inherently dissipative polymer has a surface resistivity of about 1×10 7 when tested in accordance with ASTM D257.

7. The polymer composition of claim 1 , wherein the transesterification inhibitor comprises mono zinc phosphate, a mixture of mono- and di-stearyl acid phosphate, or a combination thereof.

8. The polymer composition of claim 1 , wherein the polymer composition exhibits an L* color value of at least about 80 when measured on a spectrophotometer with D65 illumination in a 10° observer in reflection mode.

9. The polymer composition of claim 1 , wherein the polymer composition is free of or substantially free of carbon fiber, conductive carbon black, graphite, graphene, carbon nanotubes and carbon nano-structure.

10. The polymer composition of claim 1 , wherein the polymer composition further comprises an additional crystalline polymer comprising polyethylene or polypropylene.

11. The polymer composition of claim 1 , wherein the polymer composition further comprises an impact modifier.

12. The polymer composition of claim 1 , wherein the polymer composition exhibits a heat deflection temperature of at least 140° C. when tested in accordance with ASTM D648 at 0.45 MPa and a specimen thickness of 3.2 mm.

13. The polymer composition of claim 1 , wherein the composition further comprises an optical brightening agent.

14. The polymer composition of claim 1 , wherein the polymer composition further comprises an additive.

15. The polymer composition of claim 1 , wherein the polyetherimide is an aromatic polyetherimide.

16. The polymer composition of claim 1 , wherein the composition comprises from about 40 wt. % to about 75 wt. % of the polyetherimide resin.

17. The polymer composition of claim 1 , wherein the composition comprises from about 45 wt. % to about 80 wt. % of the polyetherimide resin.

18. The polymer composition of claim 1 , wherein the composition comprises from about 1 wt. % to about 20 wt. % of the crystalline polyester resin.

19. The polymer composition of claim 1 , wherein the composition comprises from about 15 wt. % to about 35 wt. % of the inherently dissipative polymer.

Assignees

• Shpp Global Tech Bv

Inventors

• Jiang Xiaoming
• Zheng Yun
• Cheng Yunan

Classifications

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L2203/20

  use in electrical or conductive gadgets · CPC title

• C08G73/1071

  Wholly aromatic polyimides containing oxygen in the form of ether bonds in the main chain · CPC title

• C08L79/08 Primary

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title