Synthesis method of phosphonate-group polysiloxane
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A technology of polysiloxane-based synthesis method, which is applied in the field of organosilicon polymer synthesis, can solve the problems of polysiloxane-containing phosphate-based polysiloxane performance effects, limited research on synthesis methods, and restrictions on wide application, etc. The effect of high ester group content, controllable content and mild reaction conditions
Active Publication Date: 2016-06-08
SHANDONG UNIV
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The silicone flame retardant compounded with ordinary epoxy has the advantages of good impact resistance and other advantages, but this reactivity is introduced into a small number of polymers that are only suitable for epoxy resins, which greatly limits its wide application.
[0012] In summary, a large number of studies on the properties of polysiloxane containing phosphonate groups have been reported at home and abroad, but there are not many studies on the synthesis method. Due to the limitation of synthesis technology, the performance of polysiloxane containing phosphate groups is also limited. affected
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[0015] Technical scheme of the present invention is as follows:
[0016] A kind of synthetic method containing phosphonate group polysiloxane, comprises steps as follows:
[0017] Under the condition of using solvent or not using solvent, mix polysiloxane containing amino group with alkyl phosphite and aldehyde and ketone compound, and introduce phosphine group into polysiloxane through Kabachnik-Fields reaction through catalyst Among the siloxane molecules, polysiloxanes containing phosphine groups are prepared.
[0018] The synthetic route of the present invention is as follows:
[0019]
[0020] Among them: n, m are integers.
[0021] According to the present invention, preferably, the molar ratio of polysiloxane containing amino groups, alkyl phosphite and aldehydes and ketones is 1: (1.5-2): (1.5-2);
[0022] Preferably, the reaction temperature is 20-30°C;
[0023] Preferably, the reaction time is 3-5 hours.
[0024] According to the present invention, preferably...
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Abstract
The invention relates to a synthesis method of phosphonate-group polysiloxane. The phosphonate-group polysiloxane is prepared by carrying out Kabachnik-Fields reaction on amino polysiloxane, alkyl phosphite and aldehyde ketones. The method has the advantage of mild and controllable reaction conditions. The prepared phosphonate-group polysiloxane has the advantages of high phosphonate content, controllable content and the like, and is hopeful to be widely used in the fields of fabric finishing, lubrication, emulsions, flame retardancy and the like.
Description
technical field [0001] The invention relates to a method for synthesizing polysiloxane containing phosphonate groups, and belongs to the field of organosilicon polymer synthesis. Background technique [0002] Silicone polymer materials have many unique and valuable properties, such as high and low temperature resistance, weather resistance, aging resistance, electrical insulation, ozone resistance, water repellency, flame retardancy, physiological inertness, etc., which are incomparable and incomparable to other organic polymer materials. As an alternative, it has been widely used in aerospace, electronics, light industry, chemical industry, textile, machinery, construction, agriculture, transportation, medical and health, people's daily life, etc., and has become an important part of the national economy. And essential new polymer materials. [0003] According to different hydrophilic groups, silicone polymers can be divided into four types: anionic, cationic, zwitterionic...
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