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Triphosphate polyhedral oligomeric silsesquioxane flame retardant and preparation method thereof

A technology of silsesquioxane and triphosphate, applied in the field of flame retardants, can solve problems such as poor compatibility, and achieve the effects of stable performance, good thermal stability and high phosphorus content

Active Publication Date: 2015-04-08
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The polyphosphate phenyl ester in the polyphosphate flame retardant also has plasticizing properties, and its plasticization, flame retardancy, and thermal stability are superior to ordinary monophosphate esters. However, it is the same as other intumescent flame retardants. , poor compatibility with polymer matrix

Method used

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  • Triphosphate polyhedral oligomeric silsesquioxane flame retardant and preparation method thereof
  • Triphosphate polyhedral oligomeric silsesquioxane flame retardant and preparation method thereof
  • Triphosphate polyhedral oligomeric silsesquioxane flame retardant and preparation method thereof

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Embodiment

[0025] 1) Preparation of heptaphenyl diphenyl triphosphate polyhedral oligomeric silsesquioxane (Ⅲ):

[0026] Such as figure 1 As shown, the flame retardant provided by the invention: the synthetic route of heptaphenyl diphenyl triphosphate polyhedral oligomeric silsesquioxane (Ⅲ) is to use incompletely condensed heptaphenylsilyltriol silsesquioxane (I) undergo condensation reaction with diphenyl chlorophosphate (II) in anhydrous tetrahydrofuran to prepare heptaphenyl diphenyl triphosphate polyhedral oligomeric silsesquioxane (III).

[0027] The specific preparation process is:

[0028] Add incompletely condensed heptaphenylsilyltriol silsesquioxane (I), diphenyl chlorophosphate (II) and tetrahydrofuran in sequence in a three-necked flask to form a reaction system, stir the reaction system, heat it, reflux it, and pump it out. Filtrate, distill the filtrate to remove the solvent under reduced pressure, rinse with distilled water to pH ≈ 7, and then vacuum dry to obtain a lig...

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Abstract

The invention discloses a triphosphate polyhedral oligomeric silsesquioxane flame retardant and a preparation method thereof. The flame retardant has a structure shown in the specification; and the flame retardant is prepared by condensing heptaphenyl silanetriol silsesquioxane (which is not completely condensed) and diphenyl chlorophosphate in anhydrous tetrahydrofuran. The flame retardant provided by the invention has high relative molecular weight, high compatibility and heat stability with polymers and the capacity of fully exerting the advantages of silicon and phosphorus flame retardants, is simple in preparation method and stable in performance and has industrial application values.

Description

technical field [0001] The invention relates to a phosphorus-silicon composite flame retardant, in particular to a triphosphate multifaceted oligomeric silsesquipolysiloxane flame retardant and a preparation method thereof, belonging to the technical field of flame retardants. Background technique [0002] Phosphate flame retardants are the darling of organic halogen-free flame retardants, belonging to the category of intumescent flame retardants, and have achieved tremendous development in recent years. However, the monophosphate flame retardants widely used in the market at present, such as triphenyl phosphate and tricresyl phosphate, have the disadvantages of small relative molecular weight, high volatility, low thermal decomposition temperature, and easy occurrence of flame retardants during use. Migration from the material and loss of volatilization are deficient, therefore, they are not well applied. [0003] Polyphosphate flame retardants are a new type of environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/549C07F9/12
Inventor 袁章林王锦成李涛涛邵锦钟张涛曹付海张广建韦小凤
Owner SHANGHAI UNIV OF ENG SCI
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