Flame retardant thermoplastic composition and articles comprising the same

A thermoplastic composition, the technology of the composition, applied in the mobile field, can solve problems such as adverse effects of physical properties

Active Publication Date: 2008-01-16
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other flame retardants such as magnesium hydroxide and aluminum trihydrate are known, ...

Method used

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  • Flame retardant thermoplastic composition and articles comprising the same
  • Flame retardant thermoplastic composition and articles comprising the same
  • Flame retardant thermoplastic composition and articles comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 10-15

[0159] Based on thermoplastic composition with BTPP, RDP, MPP and Mg(OH) 2 Melt blended in the amounts shown in Table 3, the thermoplastic composition comprised 42.6% by weight PPE, 32.0% by weight SEBS I, 21.4% by weight LLDPE, and 4.0% by weight polybutene, based on the total weight of the thermoplastic material. BTPP, RDP, MPP and Mg(OH) 2 The amounts are shown in parts / 100 parts thermoplastic composition (PPE+SEBSI+LLDPE+polybutene). The compositions were molded into 3.2 mm bars for the flammability test and tested as described in Examples 1-9.

[0160] table 3

[0161] Example

[0162] Examples 10-15 illustrate that the combination of organophosphates is beneficial in the flame retardant additive composition and that good flame retardancy (V1 and V0) can be obtained with this flame retardant additive composition.

Embodiment 16-19

[0164] 26% by weight of PPE, 25% by weight of SEBS I, 15.0% by weight of polyethylene copolymer (as shown in Table 4) and 2% by weight of polybutene of the total weight of the composition were mixed with BTPP in the amount shown in Table 4 , RDP, MPP and Mg(OH) 2 Melt mixing. BTPP, RDP, MPP and Mg(OH) 2 The amount of is shown in weight percent of the total weight of the composition. The compositions were molded into 2.0 mm bars for the flammability test and tested as described in Examples 1-9. In Example 19, one out of ten burns resulted in dripping at 20 seconds, giving a V2 rating.

[0165] Table 4

[0166] Example

[0167] Examples 16-19 illustrate that compositions containing significant amounts of polyolefin and comprising various polyethylene copolymers can achieve a V2 rating or better using a flame retardant additive composition.

Embodiment 20

[0169] 26 wt% PPE, 25 wt% SEBS I, 15.0 wt% EEA and 2 wt% polybutene with 8.0 wt% BTPP, 12.0 wt% RDP, 5.0 wt% melaminecyanurate and 7 wt% Mg(OH ) 2 Melt mixing, wherein all weight percents are based on the total weight of the composition. The compositions were molded into 2.0 mm bars for the flammability test and tested as described in Examples 1-9. The non-self-extinguishing of the composition demonstrates that the phosphate cannot be replaced by a phosphorus-free nitrogen-containing compound, further demonstrating the surprising synergistic relationship between the three components of the flame retardant additive composition.

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Abstract

A flame retardant additive composition comprising a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammomium polyphosphate, polyphosphoric acid amide and combinations of two or more of the foregoing; a metal hydroxide; and an organic phosphate. The flame retardant additive is useful in a wide range of thermoplastic compositions.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of U.S. Patent Application Serial No. 11 / 091,277, filed March 28, 2005, which is a continuation-in-part of U.S. Patent Application Serial No. 10 / 881,818, filed June 29, 2004 Continuation-in-Part, which claims priority to US Provisional Patent Application Serial No. 60 / 651,470, filed April 1, 2004, all of which are hereby incorporated by reference. Background of the invention [0003] The present application relates to flame retardant additive compositions, in particular, the present invention relates to flame retardant additive compositions for various thermoplastics. [0004] A wide variety of applications require flame retardant thermoplastic compositions. In addition to being flame retardant, the thermoplastic composition must often meet a number of criteria ranging from physical properties to appearance and environmental impact. In recent years, in order to meet many or al...

Claims

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Application Information

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IPC IPC(8): C08L71/12C08L23/00C08L53/00C08K3/22C08K3/32C08K5/521C08K5/52
Inventor 小阪一成李秀错姚维广
Owner SHPP GLOBAL TECH BV
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