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Flame-retardant polyester composition

A composition and polymer technology, applied in the field of flame retardant polyester composition, can solve the problems of lack of good flame retardancy of thin sheets and the like

Inactive Publication Date: 2007-01-10
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogen-free flame retardants such as phosphorus and nitrogen based compounds can also be used, but they lack good flame retardancy for flakes

Method used

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  • Flame-retardant polyester composition
  • Flame-retardant polyester composition

Examples

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Embodiment Construction

[0007] According to one embodiment, a composition comprises a polyester such as polybutylene terephthalate; a nitrogen-containing flame retardants; phosphinates of formula I and / or diphosphonates of formula II and / or polymers thereof as described below; and charred polymers.

[0008] Preferred polyesters are obtained by copolymerization of a diol component and an acid component comprising at least about 70 mole percent, preferably at least about 80 mole percent, of terephthalic acid or a polyester-forming derivative thereof. The preferred diol (butanediol) component may contain up to about 30 mol%, preferably up to about 20 mol%, of another glycol such as ethylene glycol, propylene glycol, 2-methyl-1,3-propanediol, hexamethylene glycol Alcohols, decanediol, cyclohexanedimethanol, neopentyl glycol, etc., and mixtures comprising at least one of the above diols. A preferred acid component may contain up to about 30 mol%, preferably up to about 20 mol%, of another acid such as is...

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PUM

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Abstract

A composition, comprising: a poly(butylene terephthalate); a nitrogen-containing flame retardant selected from the group consisting of triazines, guanidines, cyanurates, isocyanurates, and mixtures comprising at least one of the foregoing nitrogen-containing flame retardants; a phosphinates or diphosphinates; and a charring polymer.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 60 / 530147, filed December 17, 2003, the entire contents of which are incorporated herein by reference. Background technique [0003] Thermoplastic polyester compositions, such as poly(alkylene terephthalates), possess important characteristics including strength, toughness, high gloss, and solvent resistance. Polyesters are therefore useful materials for many applications, from automotive parts to electrical and electronic devices. Because of its widespread use, especially in electronic applications, it is desirable to provide flame retardancy to polyesters. A specific set of rules that are generally accepted and used as standards for flame retardancy are specified by Underwriters Laboratories, Inc. . Bulletin 94 lays down certain rules by which materials are rated for their self-extinguishing properties. Another set of rules that is generally accepted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08K3/00C08K5/31C08K5/3492C08K5/5313C08L67/00C09K23/00C08L61/06C08L67/02C08L71/12C08L79/08C08L81/04C08L81/06
CPCC08L61/06C08K5/5313C08L81/04C08K3/0058C08L71/12C08K5/0066C08K5/34924C08L81/06C08K5/31C08K5/3492C08K5/34928C08L67/02C08L79/08C08K3/016C08L2666/14C08L67/00C08K3/00C08K5/51
Inventor G·德维特
Owner SABIC GLOBAL TECH BV
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