ELECTRICAL TRACKING RESISTANCE COMPOSITIONS, ARTICLES FORMED THEREFROM, AND METHODS OF MANUFACTURE THEREOF

• US 20180044521A1
• Filed: 02/22/2016
• Published: 02/15/2018
• Est. Priority Date: 02/23/2015
• Status: Abandoned Application

• Current Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Original Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Inventors: Sheth, Kapil Chandrakant, Ramalingam, Hariharan, Mediratta, Gaurav
• Application Number:
  US15/551,340
• Publication Number:
  US 20180044521A1
• Time in Patent Office: Days
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/281 comprising polyimides
• CPC Class Codes: C08K 3/346 Clay
• CPC Class Codes: C08L 77/06 Polyamides derived from polyamines and polycarboxylic acids C08L77/10 takes precedence
• CPC Class Codes: C08L 79/08 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: H01B 3/301 Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen or carbon in the main chain of the macromolecule, not provided for in group H01B3/302
• CPC Class Codes: H01B 3/305 Polyamides or polyesteramides
• CPC Class Codes: H01B 3/306 Polyimides or polyesterimides
• CPC Class Codes: H01B 3/427 Polyethers

Abstract

A composition comprises, based on the total weight of the composition, 40 to 80 wt % of a polyetherimide; 10 to 50 wt % of talc; and 1 to 15 wt % of a polymer additive comprising a polyphthalamide, a poly(siloxane-etherimide) copolymer, aliphatic polyamide, or a combination comprising at least one of the foregoing; wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops determined according to ASTM D-3638-85.

Claims

1. A composition comprising, based on the total weight of the composition,to 80 wt % of a polyetherimide;

10 to 50 wt % of talc; and

1 to 15 wt % of a polymer additive comprising a polyphthalamide, a poly(siloxane-etherimide) copolymer, aliphatic polyamide, or a combination comprising at least one of the foregoing;

wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops determined according to ASTM D-3638-85.

2. The composition of claim 1, wherein the composition has a tensile strength greater than or equal to 65 MPa determined according to ASTM D638 and a tensile modulus greater than equal to 10,000 GPa determined according to ASTM D638.

3. The composition of claim 1, wherein the polyetherimide comprises units of the formula

4. The composition of claim 3, wherein R is a divalent group of the formula

5. The composition of claim 3, wherein R is m-phenylene and Q is isopropylidene.

6. The composition of claim 1, wherein the poly(siloxane-etherimide) copolymer comprises etherimide units of the formula

7. The composition of claim 6, wherein in the polysiloxane diamine, R′

is methyl, R⁴ is 1,3-propylene, and E is 5 to 100; and

wherein in the etherimide units, R is phenylene and Z is a residue of bisphenol A.

8. The composition of claim 1, wherein polyphthalamide comprises units of the formula

9. The composition of claim 8, wherein each G¹ is a 1,6-hexyl group.

10. The composition of claim 1, wherein the aliphatic polyamide comprises units of the formula

11. The composition of claim 1, wherein talc has a D95 of 2 to 6 micrometers.

12. The composition of claim 1 comprising, based on the total weight of the composition,to 70 wt % of a polyetherimide;

and

30 to 50 wt % of talc; and

1 to 15 wt % of a polymer additive comprising a polyphthalamide, a poly(siloxane-etherimide) copolymer, aliphatic polyamide, or a combination comprising at least one of the foregoing;

wherein the composition has;

a number of drops to tracking at 250 volts of greater than or equal to 50 drops determined according to ASTM D-3638-85;

a tensile strength greater than or equal to 50 MPa determined according to ASTM D638; and

a tensile modulus of greater than or equal to 10,000 GPa determined according to ASTM method D638.

13. The composition of claim 1, further comprising a processing aid, a heat stabilizer, an ultraviolet light absorber, a colorant, a flame retardant, or a combination comprising at least one of the foregoing.

14. The composition of claim 13, comprising, based on the total weight of the composition, from 0.0001 to 20 wt % of each additive present in the composition.

15. An insulating material comprising the composition of claim 1.

16. An article selected from a molded article, a thermoformed article, an extruded film, an extruded sheet, a layer of a multi-layer article, a substrate for a coated article, and a substrate for a metallized article made from the composition of claim 1.

17. An article made from the composition of claim 1, wherein the article is a solar apparatus, an electrical junction box, an electrical connector, an electrical vehicle charger, an outdoor electrical enclosure, a smart meter enclosure, a smart grid power node, a photovoltaic frame and a miniature circuit breaker.

18. A method of manufacture of an article, comprising molding, extruding, or casting the composition of claim 1 to form the article.

19. A method of controlling the tracking of an electrical current of an article of manufacture, the method comprising:

providing a composition of claim 1, and processing the composition to form an article of manufacture.

20. The method of claim 19, wherein the article is a solar apparatus, an electrical junction box, an electrical connector, an electrical vehicle charger, an outdoor electrical enclosure, a smart meter enclosure, a smart grid power node, a photovoltaic frame and a miniature circuit breaker.