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Stabilized flame retardant additives and their use

A flame retardant additive and additive technology, which is applied to stable flame retardant additives and their application fields, and can solve problems such as difficulty in achieving

Inactive Publication Date: 2006-06-14
ALBEMARLE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Note that the target temperature of 200°C for XPS and HIPS applications is more difficult to achieve for tetrabromocyclooctane and dibromoethyl-dibromocyclohexane than for the commonly used flame retardant hexabromocyclododecane

Method used

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  • Stabilized flame retardant additives and their use
  • Stabilized flame retardant additives and their use
  • Stabilized flame retardant additives and their use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Dynamic TGA analysis is carried out to the composition described in table 1, wherein tetrabromocyclooctane (SAYTEX  BC-48; Albemarle Corporation) is denoted by "BC-48" and PRATHERM EC-14 brominated epoxy oligomer (Dainippon Ink & Chemicals, Incorportated) is denoted by "EC-14". These TGA analyzes were performed in the range of 30-750°C with a temperature ramp rate of 10°C / min. Table 1 summarizes the results obtained in these tests, where the percentages of the mixture are by weight.

[0064] T°C weight loss %

Embodiment 2

[0066] The composition described in table 2 is carried out dynamic TGA test as described in embodiment 1, wherein tetrabromocyclooctane (SAYTEX  BC-48; Albemarle Corporation) is represented by "BC-48" and PRATHERM EP-16 brominated epoxy oligomer (Dainippon Ink & Chemicals, Incorporated) is represented by "EP-16". The results are summarized in Table 2, where the percentages of the mixture are based on weight.

[0067] T℃ weight loss

Embodiment 3

[0069] The process of Example 1 was repeated, using dibromoethyl-dibromocyclohexane represented by "BCL-462" (SAYTEX  BCL-462; Albemarle Corporation) and PRATHERMEP-16 brominated epoxy oligomer (represented by EP-16). The results are summarized in Table 3, where the percentages of the mixture used are by weight.

[0070] T°C weight loss

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Abstract

A flame retardant additive composition having high thermal stability comprising (A) tetrabromocyclooctane or dibromoethyl-dibromocyclohexane or both, and (B) a halogenated aromatic epoxide and / or a mixture of halogenated aromatic oligomers, the halogen atoms in (B) are chlorine or bromine or both, and the weight ratio of (A) / (B) is about 95 / 5 to about 60 / 40. Components (A) and (B) may be included to provide flame retardancy to various polymers, particularly styrenic polymers, including foamed or expandable styrenic polymers, crystalline styrenic polymers, Impact-modified styrenic polymers and crystalline styrenic polymers, mixtures of impact-modified styrenic polymers. In all cases, the thermal stability of component (A) is significantly improved by the coexistence of component (B).

Description

Background of the invention [0001] 1,2,5,6-tetrabromocyclooctane (hereinafter often referred to more simply as tetrabromocyclooctane) and 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (hereinafter often referred to more simply as dibromoethyl-dibromocyclohexane) is a useful flame retardant. Among the potential applications of these compounds are as flame retardants in injection molded styrenic polymers (e.g., crystalline polystyrene and HIPS), and as flame retardants in expanded or foamed styrenic polymer compositions such as EPS and XPS flame retardants in. Unfortunately, tetrabromocyclooctane and dibromoethyl-dibromocyclohexane are not thermally stable enough to prevent thermal degradation under some of the high temperature conditions encountered during compounding or molding of these polymeric products. [0002] To provide tetrabromocyclooctane or dibromoethyl-dibromocyclohexane formulations useful as flame retardant additives in injection molded styrenic polymers and expan...

Claims

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Application Information

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IPC IPC(8): C08K5/02C08G59/30C08K5/15C08K5/1515C08L25/00C08L25/02C08L63/00
CPCC08K5/02C08K5/1515C08L25/02C08K5/15C08L25/00C08L63/00
Inventor 达尼埃尔·F·古森斯阿瑟·G·麦克
Owner ALBEMARLE CORP
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