A kind of v-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate and preparation method thereof

A technology of dimethylsiloxane polyoxyethylene ether and dimethylsiloxane, which is applied in the field of polymer synthesis, can solve the problems of high price, unfavorable research and promotion of high-performance associative thickeners, etc. The raw materials are easily available, which is beneficial to industrial production and commercial promotion and application, and the effect of reducing production costs

Active Publication Date: 2021-02-23
SICHUAN TEXTILE SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate and its preparation method, which solves the problem of the existing high-performance associative thickener preparation. Need to use exclusive monopoly and expensive behenyl polyoxyethylene ether methacrylate (BEM), which is not conducive to the research and promotion of high-performance associative thickeners.

Method used

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  • A kind of v-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate and preparation method thereof
  • A kind of v-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate and preparation method thereof
  • A kind of v-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Add 0.75 parts of 1,1,1,3,5,5,5-heptamethyltrisiloxane, 10.0 parts of octamethylcyclotetrasiloxane, 0.1 part of solid superacid SO 4 -2 / TiO 2 , raise the temperature to 70°C for 4 hours, continue to heat up to 160°C after filtration, and keep it under the condition of vacuum degree -0.09Mpa for 2h to remove the low boilers, that is, to obtain the side hydrogen-containing polysiloxane oligomer intermediate, which contains The value of m in the hydrogen polysiloxane oligomer intermediate is 20, and the value of n is 20. The raw material composition and reaction conditions for the preparation of the hydrogen polysiloxane oligomer intermediate are detailed in Table 1.

[0042] Add 3.2 parts of the obtained pendant hydrogen-containing polysiloxane oligomer intermediate, 2.4 parts of allyl alcohol polyoxyethylene ether APEG2000, and 100 mg / Kg of chloroplatinic acid catalyst (relative reactant), react at 120 ° C for 4 h to obtain V Shaped polydimethylsiloxane-polyethylene g...

Embodiment 2

[0047] Add 0.75 parts of 1,1,1,3,5,5,5-heptamethyltrisiloxane, 1.0 parts of octamethylcyclotetrasiloxane, 0.03 parts of solid superacid SO 4 -2 / ZrO 2 , raise the temperature to 80°C for 2 hours, continue to heat up to 160°C after filtration, and keep it under the condition of vacuum degree -0.09Mpa for 2h to remove the low boilers, that is, to obtain the side hydrogen-containing polysiloxane oligomer intermediate, which contains The value of m in the hydrogen polysiloxane oligomer intermediate is 2, and the value of n is 2. See Table 1 for the raw material composition and reaction conditions for the preparation of the hydrogen polysiloxane oligomer intermediate.

[0048] Add 5.2 parts of the obtained pendant hydrogen-containing polysiloxane oligomer intermediate, 1.0 part of allyl alcohol polyoxyethylene ether APEG1000, 50 mg / Kg of chloroplatinic acid catalyst (relative reactant), and react at 80 ° C for 6 h to obtain V Shaped polydimethylsiloxane-polyethylene glycol capped...

Embodiment 3

[0052] Add 0.75 parts of 1,1,1,3,5,5,5-heptamethyltrisiloxane, 8.0 parts of octamethylcyclotetrasiloxane, 0.04 parts of solid superacid SO 4 -2 / Fe 2 o 3 , heated up to 60°C for 4h reaction, continued to heat up to 160°C after filtration, and kept for 2h under the condition of vacuum degree -0.09Mpa to remove low boilers, that is, to obtain the side hydrogen-containing polysiloxane oligomer intermediate, which side contains The value of m in the hydrogen polysiloxane oligomer intermediate is 16, and the value of n is 16. The raw material composition and reaction conditions for the preparation of the hydrogen polysiloxane oligomer intermediate are detailed in Table 1.

[0053] Add 2.6 parts of the obtained side hydrogen-containing polysiloxane oligomer intermediate, 2.4 parts of allyl alcohol polyoxyethylene ether HPEG2400, 40mg / Kg of vinylsiloxane-platinum complex (relative reactant), in React at 100°C for 4 hours to obtain a V-shaped polydimethylsiloxane-polyethylene glyco...

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Abstract

The invention discloses a V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate, which comprises hydrophobic V-shaped polydimethylsiloxane, hydrophilic polyethylene glycol and reactive unsaturated double bonds. The preparation method includes preparing a hydrogen-containing polysiloxane oligomer intermediate by cationic ring-opening polymerization of octamethylcyclotetrasiloxane and 1,1,1,3,5,5,5-heptamethyltrisiloxane; preparing a V-shaped polydimethylsiloxane-polyethylene glycol block copolymer by hydrosilylation of the hydrogen-containing polysiloxane oligomer intermediate and allyl alcohol polyoxyethylene ether; and preparing the V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate by esterification of the V-shaped polydimethylsiloxane-polyethylene glycol block copolymer and acrylic monomers. The V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate containing 2 hydrophobic polysiloxane segments can be used for preparing an emulsion type alkali-soluble thickener, and thus the hydrophobic association strength is improved, and the thickening performance of the prepared alkali-soluble thickener is improved after use.

Description

technical field [0001] The invention relates to the technical field of polymer synthesis, in particular to a V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate and a preparation method thereof. Background technique [0002] Polyether silicone oil is an amphiphilic block or graft copolymer with polyether (polyethylene glycol or polypropylene glycol) and polysiloxane chain segments linked by chemical bonds. The polysiloxane part on the molecular chain of polyether silicone oil has extremely low surface tension, weak intermolecular force and organic high and low temperature resistance, and the two non-polar methyl groups on the Si—O bond make polysiloxane Alkane molecular chains have excellent hydrophobic properties. The polyether part is mainly composed of polyethylene glycol, polypropylene glycol or polyethylene glycol and polypropylene glycol, and has a chemical structure similar to nonionic surfactants (C 2 h 4 O) a (C 3 h 6 O) b The chemical structure,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/46
CPCC08G77/46
Inventor 樊武厚黄玉华韩丽娟蒲宗耀梁娟罗艳辉蒲实
Owner SICHUAN TEXTILE SCI RES INST
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