Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polymerized organic silicon flame-retardant charring agent polymer and preparation method thereof

A technology of organosilicon and char-forming agent, applied to polymeric organosilicon flame-retardant char-forming agent polymer and preparation thereof, silicon-based flame-retardant char-forming agent polydimethyl silicate resorcinol ester polymer and its preparation In the field of preparation, it can solve the problems of poor processing performance, low decomposition temperature, easy water absorption, etc., and achieve the effects of excellent flame retardant effect, low volatility and large molecular weight.

Active Publication Date: 2015-06-24
HUZHOU RUIGAO NEW MATERIALS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pentaerythritol and pentaerythritol phosphate are carbon-forming agents that have been used and tried by people, but most of the above-mentioned char-forming agents have the disadvantages of high polarity, easy water absorption, low decomposition temperature and poor processability.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymerized organic silicon flame-retardant charring agent polymer and preparation method thereof
  • Polymerized organic silicon flame-retardant charring agent polymer and preparation method thereof
  • Polymerized organic silicon flame-retardant charring agent polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]Example 1 In a 250ml four-necked bottle equipped with a stirrer, a thermometer and a condensing tube, and a drying tube at the top of the condensing tube, replace the air in the bottle with nitrogen, and add 5.50 g (0.05 mol) of resorcinol Phenol, 110ml dichloroethane and 10.1g (0.1mol) triethylamine, dropwise add 6.45g (0.05mol) dimethyldichlorosilane, control the reaction temperature with the rate of addition not higher than 30 ℃, be warmed up to 65°C, heat preservation reaction for 10 hours, then dropwise add 0.04g of methanol as an end-capping agent, heat preservation reaction for 0.5h; lower the temperature to below 30°C, then add 30ml of distilled water to wash twice, separate the liquid, and wash the obtained dichloroethane layer with 6g Dry over anhydrous sodium sulfate, filter, and distill off the filtrate under reduced pressure to remove dichloroethane to obtain resorcinol polydimethylsilicate with a yield of 92.8%.

Embodiment 2

[0041] Example 2 In a 250ml four-necked bottle equipped with a stirrer, a thermometer and a condenser tube, and a drying tube on the top of the condenser tube, the air in the bottle was replaced with nitrogen, and 5.50g (0.05mol) of benzenediol was added. Phenol, 80ml toluene and 11.11g (0.11mol) triethylamine, add dropwise 6.45g (0.05mol) dimethyldichlorosilane, control the reaction temperature with the rate of addition not higher than 30°C, and raise the temperature to 70°C after dropping, Insulate and react for 7 hours, then add 0.05g of methanol dropwise as an end-capping agent, and insulate for 0.5h; lower the temperature to below 30°C, then add 30ml of distilled water to wash twice, separate the layers, and dry the obtained toluene layer with 7g of anhydrous magnesium sulfate , filtered, and the filtrate was distilled off toluene under reduced pressure to obtain resorcinol polydimethylsilicate. Yield: 93.9%, weight average molecular weight: 8314, number average molecular...

Embodiment 3

[0042] Example 3 In a 250ml four-necked bottle equipped with a stirrer, a thermometer and a condenser tube, and a drying tube on the top of the condenser tube, replace the air in the bottle with nitrogen, and add 5.50 g (0.05 mol) of m-phthalide Phenol, 90ml xylene and 11.11g (0.11mol) triethylamine, add dropwise 6.45g (0.05mol) dimethyldichlorosilane, control the reaction temperature with the dropping rate not higher than 30°C, and raise the temperature to 50°C after dropping , heat preservation reaction for 12 hours, then add 0.04g of methanol dropwise as an end-capping agent, heat preservation reaction for 0.5h; lower the temperature to below 30°C, then add 40ml of distilled water to wash twice, separate the liquid, and wash the obtained xylene layer with 9g of anhydrous sodium sulfate After drying and filtering, the filtrate was distilled off under reduced pressure to remove xylene to obtain resorcinol polydimethylsilicate with a yield of 92.6%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
decomposition temperatureaaaaaaaaaa
dispersityaaaaaaaaaa
dispersityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a polymerized organic silicon flame-retardant charring agent polymer and a preparation method thereof, and in particular relates to a flame-retardant charring agent, namely polydimethyl resorcinol silicate and a preparation method. The structure of the polymer is as shown in a formula below (as shown in specification), wherein n ranges from 30 to 80. The preparation method comprises the following steps: in an organic solvent, in the presence of triethylamine, reacting resorcinol with equal molar of dimethyl silane dihalide; or reacting sodium resorcinol with equal molar of dimethyl silane dihalide, and carrying out purifying treatment so as to obtain polydimethyl resorcinol silicate. The polydimethyl resorcinol silicate disclosed by the invention is high in molecular weight, high in decomposition temperature, good in compatibility with materials, free from migration, good in char forming characteristic, and suitable to be used as a flame-retardant charring agents of polyolefin, polyester, polyamide, epoxy resin, unsaturated resin and the like; and the preparation method is simple in production process, low in cost and easy to implement industrial production.

Description

technical field [0001] The invention relates to a polymerized organic silicon flame-retardant char-forming agent polymer and a preparation method thereof, in particular to a silicon-based flame-retardant char-forming agent polydimethylsilicate resorcinol ester polymer and a preparation method thereof. The polymer is suitable for use as a flame-retardant char-forming agent for polyolefins, polyesters, polyamides, epoxy resins, unsaturated resins, etc. Background technique [0002] Adding flame retardants to materials is an effective way to overcome the problem of flammability of synthetic polymer materials. However, because polymer materials generally have the property of three states, that is, when the material is burned at a high temperature, it will flow or drip into a liquid, which will move with the flame and cause secondary combustion. In order to solve the dripping problem of synthetic materials, the most effective method is to add a char-forming agent. The carbon fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/52C08G77/06C08L83/14C08L67/02C08L23/12
Inventor 王彦林董信杨海军
Owner HUZHOU RUIGAO NEW MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com