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Reactive flame retardant vinyl organosilicon caged thiophosphate compound, and preparation method and application thereof

A technology of vinyl silicone and reactive flame retardant, which is applied in the direction of organic chemistry, chemical instruments and methods, and compounds of Group 5/15 elements of the periodic table, etc., which can solve the problems of poor dispersion, affecting the mechanical properties of the matrix, and the amount of addition Large and other problems, to achieve the effect of good char formation, overcome the decline in mechanical properties, good char formation and anti-melt dripping

Pending Publication Date: 2021-01-29
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves upon existing methods for producing fire resistive materials such as polyvinyltriphenoxysulfonium (PST) which have been shown to cause environmental concerns due to their harmful chemicals released during combustion processes. These new techniques involve reacting certain types of halogen donors on silica gel particles together instead of adding them separately. However, these improvements were limited because they resulted only from single type of substance added at once rather than multiple ones combined simultaneously.

Problems solved by technology

The technical problem addressed in this patented text relates how to create an effective chemical agent called fluorescent fire retardancy (FRC) which combines two different types of substances - one being more efficient than another type at lower levels while still maintaining their original function when added together.

Method used

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  • Reactive flame retardant vinyl organosilicon caged thiophosphate compound, and preparation method and application thereof
  • Reactive flame retardant vinyl organosilicon caged thiophosphate compound, and preparation method and application thereof
  • Reactive flame retardant vinyl organosilicon caged thiophosphate compound, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 In a 250ml three-necked flask equipped with a stirrer, a thermometer, a reflux condenser and connected with a drying tube and a hydrogen chloride absorbing device at the top, add 0.10mol (19.60g) of cage-like pentaerythritol thiophosphate and 100ml of diethyl Glycol dimethyl ether, under the protection of nitrogen, raise the temperature to 60°C, start to drop 0.05mol (7.05g) methylvinyl dichlorosilane, after the drop, gradually raise the temperature to 140°C, keep the temperature for 10h, cool to room temperature , filtered, washed with 60ml of water until pH = 6-7, and dried to obtain a white solid vinyl silicone cage phosphorothioate with a yield of 85.2%.

Embodiment 2

[0042] Example 2 In a 250ml three-necked flask equipped with a stirrer, a thermometer, a reflux condenser and connected with a drying tube and a hydrogen chloride absorbing device at the top, add 0.105mol (20.58g) cage pentaerythritol thiophosphate and 110ml benzyl Ether, under the protection of nitrogen, the temperature was raised to 60 ° C, and 0.05 mol (7.05 g) of methyl vinyl dichlorosilane was added dropwise. 60ml of water was washed to pH = 6-7, and dried to obtain a white solid vinyl silicone cage phosphorothioate with a yield of 87.0%.

Embodiment 3

[0043] Example 3 In a 250ml three-necked flask equipped with a stirrer, a thermometer, a reflux condenser and connected with a drying tube and a hydrogen chloride absorbing device at the top, add 0.110mol (21.56g) cage-like pentaerythritol thiophosphate and 120ml tetrachlorohydrin Ethane, under the protection of nitrogen, heat up to 60°C, start to drop 0.05mol (7.05g) of methylvinyldichlorosilane, after dropping, gradually raise the temperature to 120°C, keep the temperature for 12h, cool to room temperature, filter, Wash with 70ml of water until pH = 6-7, and dry to obtain white solid vinyl organosilicon cage phosphorothioate with a yield of 90.1%.

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Abstract

The invention relates to a reactive flame retardant vinyl organosilicon cage-shaped thiophosphate compound as well as a preparation method and application thereof. The structure of the compound is shown in the specification. The preparation method comprises steps: in an organic solvent, enabling methyl vinyl dichlorosilane or methyl vinyl dimethoxysilane to react with 2 times of molar amount of cage phosphorothioate phosphorothioate, and performing purification treatment to obtain vinyl organosilicon caged thiophosphate. The compound disclosed by the invention is high in flame-retardant efficiency and good in charring property, can be used as a reactive flame retardant, and can be copolymerized with monomers or resins containing unsaturated double bonds, such as unsaturated resin, styrene,acrylate and vinyl acetate to form a body flame-retardant material; the reactive flame retardant vinyl organosilicon cage-shaped thiophosphate compound can also be used as an additive flame retardantfor flame-retardant charring agents of epoxy resin, polyester, polyurethane, polyolefin and other materials; the process is simple, equipment investment is low, and industrial production is easy to realize.

Description

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Claims

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Application Information

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Owner SUZHOU UNIV OF SCI & TECH
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