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Polymer type phosphatic fire retardant, preparation method and usage

A flame retardant and polymer technology, applied in the field of polymer-type phosphorus-containing flame retardants and their preparation, can solve problems such as difficulty in adding, and achieve the effects of excellent flame retardant effect, excellent durability, and difficult migration.

Active Publication Date: 2005-01-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the organic phosphorus-based flame retardants are oily, and it is difficult to add them in the process of polymer processing. Generally, they can only be used in polyurethane foam, soft PVC, transformer oil, cellulose resin, natural and synthetic rubber.

Method used

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  • Polymer type phosphatic fire retardant, preparation method and usage
  • Polymer type phosphatic fire retardant, preparation method and usage

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Add 1 mole of phenylphosphonic dichloride, 1 mole of 9,10-dihydro-9-oxa-10-phosphophenanthrene-hydroquinone (hereinafter referred to as ODOP-HQ), and 0.01 mole of calcium chloride In a reaction kettle with a stirrer and a thermometer, feed nitrogen gas and stir to raise the temperature to 160°C for 1 hour; then raise the temperature to 250°C for 3 hours; Precipitate in diethyl ether, filter and vacuum-dry to obtain a white crystalline product. The yield was 99%, and the melting temperature was 200°C.

Embodiment 2

[0023] Add 1 mole of naphthylphosphonodibromide, 1 mole of ODOP-HQ, and 0.05 moles of calcium chloride into a reaction kettle equipped with a stirrer and a thermometer, feed in nitrogen and stir to raise the temperature to 180°C for 2 hours; then raise the temperature to 250°C Reaction at ℃ for 4 hours; after cooling, add 250ml of benzyl alcohol to dissolve it completely, then pour into 8 times the volume of anhydrous methanol to precipitate, filter and vacuum dry to obtain a white powder product. The yield was 98%, and the melting temperature was 220°C.

Embodiment 3

[0025] Put 1 mole of phenylphosphonodibromide, 1.1 moles of ODOP-HQ, and 0.02 moles of zinc chloride into a reaction kettle equipped with a stirrer and a thermometer, feed in nitrogen and stir to raise the temperature to 160°C for 1 hour; then raise the temperature to 250°C React at ℃ for 5 hours; after cooling, add 150ml of tetrachloroethane to dissolve it completely, then pour it into 7 times the volume of anhydrous ether to precipitate, filter and vacuum dry to obtain a white crystalline product. The yield was 95%, and the melting temperature was 200°C.

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Abstract

A fire retardant is a sort of polymer prepared from phenyl, naphthol or alkyl substituted benzene ring chlorine atom and bromine atom with melting temperature of 185-200 deg.C. A method for preparing the polymer is disclosed and the prepared polymer can be used as fire resisting additive for polyester, eurelon, epoxy etc.

Description

1. Technical field [0001] The invention belongs to the technical field of polymer-type phosphorus-containing flame retardants, in particular to a polymer-type phosphorus-containing flame retardant and a preparation method thereof, and the flame retardant can be used as polyester resin, polyamide, epoxy resin and Use of a halogen-free phosphorus-containing flame retardant additive for an unsaturated resin. 2. Background technology [0002] Most of the existing polymers such as polyester, epoxy resin and other engineering plastics are not flame retardant, which limits their use in aerospace, vehicles, Wider applications in entertainment venues, electronic and electrical home decoration, and protective clothing for special industries. At present, adding flame retardants to modify them is one of the important ways to endow these polymer materials with excellent flame retardancy, which also makes the research on flame retardants very active. [0003] There are many kinds of fla...

Claims

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Application Information

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IPC IPC(8): C08G79/04C08L63/00C08L67/00C08L77/00
Inventor 王玉忠班大明常玉龙赵国明杨冰
Owner SICHUAN UNIV
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