Preparation method of organopolysiloxane resin

The technology of polysiloxane resin and organosilane is applied in the field of preparation of organopolysiloxane resin, which can solve the problems of poor process repeatability, long production cycle, poor environmental protection performance, etc., to simplify the production process and reduce labor intensity. , the effect of easy separation

Active Publication Date: 2016-08-31
GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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Problems solved by technology

[0013] The synthesis method patents of the above three organopolysiloxane resins all adopt the co-hydrolysis condensation route, which generally has complex processes, long production cycle, poor environmental performance, easy gelation, low yield, poor process reproducibility, Disadvantages such as high energy consumption

Method used

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  • Preparation method of organopolysiloxane resin
  • Preparation method of organopolysiloxane resin
  • Preparation method of organopolysiloxane resin

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Embodiment 1-21

[0052] The amount of reactants is listed in Table 1, and the reaction conditions are listed in Table 2. Add the silane monomer and type I acidic compound into the reactor, and after stirring for 15 minutes, add the type II acidic compound and type III acidic compound into the silane monomer. After stirring for 30 minutes, react at (reaction temperature) for a certain period of (reaction time). After cooling to room temperature, the reactant is washed and separated by aqueous sodium carbonate solution, and the upper layer is dried and filtered. The filtrate is at (distillation temperature) Distilled under reduced pressure to prepare polysiloxanes containing different functional units, the results are listed in Table 3.

[0053] Table 1: The charging amount (gram) of preparation raw material in each embodiment

[0054]

[0055] Continued Table 1

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[0057] Continued Table 1

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[0059]

[0060] Continued Table 1

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[0062]

[0063] The re...

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Abstract

The invention discloses a preparation method of organopolysiloxane resin. The preparation method includes the steps of (1), taking alkoxyorganosilane, an end-capping reagent and an acidic compound as preparation raw materials; (2), feeding the preparation raw materials with uniform stirring, wherein the feeding molar ratio of the end-capping reagent to the alkoxyorganosilane to the acidic compound is (0-40):1:(0.2-5); (3), adjusting the temperature at 40-150 DEG C at which condensation polymerization reaction is conducted for 2-20 hours; (4), terminating the condensation polymerization reaction, adjusting a reaction mixture to be neutral, and purifying a reaction product so as to obtain the organopolysiloxane resin. The preparation method of the organopolysiloxane resin has the advantages of environmental protection and no pollution during production, low energy consumption, short period, high product yield and the like and is more excellent in performance.

Description

technical field [0001] The invention relates to the field of polymer synthesis, in particular to a preparation method of organopolysiloxane resin. Background technique [0002] Organopolysiloxane is a new type of organosilicon polymer material. Its structure is composed of Si-O-Si main chain and organic functional substituents connected to silicon atoms. It has smoothness, high and low temperature resistance, hydrophobicity, insulation And other characteristics, widely used in electric power, electronics, construction, industrial additives, personal care products, medical accessories and many other fields. Its main constituent categories include silicone oil, silicone rubber, silicone resin and functionally modified derivatives of the three. [0003] The structure of organopolysiloxane can be split into four units: monofunctional unit (R 3 SiO 0.5 , referred to as M unit), two functional units (R 2 SiO, referred to as D unit), trifunctional unit (RSiO 1.5 , referred to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/06C08G77/08C08G77/28C08G77/18
CPCC08G77/06C08G77/08C08G77/18C08G77/28C08G77/34C08G77/70
Inventor 黄振宏陈贤惠伍锦枢戢欢刘润明
Owner GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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