Flame retardant laser direct structuring materials

Patent metadata

Field	Value
Publication number	US-2018022917-A9
Application number	US-201313923782-A
Country	US
Kind code	A9
Filing date	Jun 21, 2013
Priority date	May 23, 2008
Publication date	Jan 25, 2018
Grant date	—

Abstract

Flame retardant thermoplastic compositions that are capable of being used in a laser direct structuring process. The compositions include a thermoplastic resin, a laser direct structuring additive, and a flame retardant. The compositions offer flame retardant characteristics while also substantially maintaining the mechanical properties of the base thermoplastic resin, such as the impact strength and/or HDT of the composition. The compositions can be used in a variety of applications such as personal computers, notebook and portable computers, cell phone and other such communications equipment.

First claim

What is claimed is:

1 . A thermoplastic composition, comprising:
a) from 15 to 85% by weight of a thermoplastic resin, wherein the thermoplastic resin comprises a poly(arylene ether), a poly(arylene ether)/polystyrene blend, or a combination comprising at least one of the foregoing resins; b) from 0.1 to 30% by weight of a laser direct structuring additive; and c) 20% or less by weight of a flame retardant; wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.6 mm (±10%).

2 . The composition of claim 1 , wherein the thermoplastic resin comprises poly(2,6-dimethyl-1,4-phenylene ether), a poly(2,6-dimethyl-1,4-phenylene ether)/polystyrene blend, or a combination comprising at least one of the foregoing resins.

3 . The composition of claim 1 , wherein the laser direct structuring additive is selected from a heavy metal mixture oxide spinel, a copper salt, or a combination including at least one of the foregoing laser direct structuring additives.

4 . The composition of claim 3 , wherein the laser direct structuring additive comprises copper chromium oxide spinel or copper hydroxide phosphate.

5 . The composition of claim 1 , wherein the flame retardant is selected from a phosphorus containing flame retardant, an organic compound containing phosphorus-nitrogen bonds, or a combination including at least one of the foregoing flame retardants.

6 . The composition of claim 1 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.2 mm (±10%).

7 . The composition of claim 1 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.0 mm (±10%).

8 . The composition of claim 1 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 0.8 mm (±10%).

9 . The composition of claim 1 , wherein the thermoplastic composition includes from 0.1 to 15 wt. % of the flame retardant.

10 . An article of manufacture comprising the composition of claim 1 .

11 . The article of claim 10 , wherein the article is selected from a personal computer, a notebook computer, a portable computers, a cell phone, or a personal digital assistant.

12 . A method of forming a thermoplastic composition comprising the step of:
blending in an extruder: a) from 15 to 85% by weight of a thermoplastic resin, wherein the thermoplastic resin comprises a poly(arylene ether), a poly(arylene ether)/polystyrene blend, or a combination comprising at least one of the foregoing resins; b) from 0.1 to 15% by weight of a laser direct structuring additive; and c) 20% or less by weight of a flame retardant; wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.6 mm (±10%).

13 . The method of claim 12 , wherein the thermoplastic resin comprises poly(2,6-dimethyl-1,4-phenylene ether), a poly(2,6-dimethyl-1,4-phenylene ether)/polystyrene blend, or a combination comprising at least one of the foregoing resins.

14 . The method of claim 12 , wherein the laser direct structuring additive is selected from a heavy metal mixture oxide spinel, a copper salt, or a combination including at least one of the foregoing laser direct structuring additives.

15 . The method of claim 14 , wherein the laser direct structuring additive comprises copper chromium oxide spinel or copper hydroxide phosphate.

16 . The method of claim 12 , wherein the flame retardant is selected from a phosphorus containing flame retardant, an organic compound containing phosphorus-nitrogen bonds, or a combination including at least one of the foregoing flame retardants.

17 . The method of claim 12 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.2 mm (±10%).

18 . The method of claim 12 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.0 mm (±10%).

19 . The method of claim 12 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 0.8 mm (±10%).

20 . The method of claim 12 , wherein the thermoplastic composition includes from 0.1 to 15 wt. % of the flame retardant.

21 . A thermoplastic composition, comprising:
a) from 15 to 85% by weight of a thermoplastic resin, wherein the thermoplastic resin comprises a polyamide resin; b) from 0.1 to 30% by weight of a laser direct structuring additive; and c) 20% or less by weight of a flame retardant; wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.6 mm (±10%).

22 . The composition of claim 21 , wherein the polyamide resin comprises polyamide-6, polyamide-6,6, polyamide-4,6, polyamide-11, polyamide-12, polyamide-6,10, polyamide-6,12, polyamide 6/6,6, polyamide-6/6,12, polyamide MXD,6, polyamide-6,T, polyamide-6,I, polyamide-6/6,T, polyamide-6/6,I, polyamide-6,6/6,T, polyamide-6,6/6,I, polyamide-6/6,T/6,I, polyamide-6,6/6,T/6,I, polyamide-6/12/6,T, polyamide-6,6/12/6,T, polyamide-6/12/6,I, polyamide-6,6/12/6,I, or a combination comprising at least one of the foregoing polyamide resins.

23 . The composition of claim 21 , wherein the laser direct structuring additive is selected from a heavy metal mixture oxide spinel, a copper salt, or a combination including at least one of the foregoing laser direct structuring additives.

24 . The composition of claim 23 , wherein the laser direct structuring additive comprises copper chromium oxide spinel or copper hydroxide phosphate.

25 . The composition of claim 21 , wherein the flame retardant is selected from a phosphorus containing flame retardant, an organic compound containing phosphorus-nitrogen bonds, or a combination including at least one of the foregoing flame retardants.

26 . The composition of claim 21 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.2 mm (±10%).

27 . The composition of claim 21 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 1.0 mm (±10%).

28 . The composition of claim 21 , wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a thickness of 0.8 mm (±10%).

29 . The composition of claim 21 , wherein the thermoplastic composition includes from 0.1 to 15 wt. % of the flame retardant.

30 . An article of manufacture comprising the composition of claim 21 .

31 . The article of claim 30 , wherein the article is selected from a personal computer, a notebook computer, a portable computers, a cell phone, or a personal digital assistant.

32 . A method of forming a thermoplastic composition comprising the step of:
blending in an extruder:
a) from 15 to 85% by weight of a thermoplastic resin, wherein the thermoplastic resin comprises a polyamide resin;
b) from 0.1 to 15% by weight of a laser direct structuring additive; and
c) 20% or less by weight of a flame retardant;
wherein a molded sample of the thermoplastic composition is capable of achieving UL94 V0 rating at a th

Assignees

• Sabic Global Technologies Bv

Inventors

• Li Yanjun Frank
• Meng Jiru
• Zou Xiangping David

Classifications

• C08L25/04

  Homopolymers or copolymers of styrene · CPC title

• C08K5/0066

  Flame-proofing or flame-retarding additives · CPC title

• B41M5/24

  Ablative recording, e.g. by burning marks; Spark recording {(marking by high energetic means, e.g. by laser otherwise than burning or ablative removal B41M5/26; materials or methods for recording or reproduction by optical means G11B7/00)} · CPC title

• C08K2003/2251

  of chromium · CPC title

• B41M5/267

  Marking of plastic artifacts, e.g. with laser · CPC title