Organic polysiloxane containing multiple functional groups and preparation method thereof

Abstract

The invention discloses constitutional repeating units of an organic polysiloxane containing multiple functional groups, which is shown as right formula: in the formula, a, b and c are respectively the molar fractions of corresponding constitutional repeating units, wherein, 0<a<1, 0<b<1, 0<c<1 and p=1 to 200. The invention further discloses the preparation of the organic polysiloxane containing multiple functional groups. The organic polysiloxane containing multiple functional groups provided by the invention not only adds a new variety for organic polysiloxane compounds, but also provides anew choice for the occasion that organic polysiloxane additive-type flame retardant is utilized. In the invention, when the new structural organic polysiloxane containing multiple functional groups isprepared by the method, the selected raw material monomers are all environment-friendly and non-toxic, corrosive gas and toxic wastewater are not produced in the reaction process, thereby not only avoiding adverse impacts on the environment, but also avoiding a series of problems resulting in cost increasing, which are brought by later-stage wastewater treatment.

Description

technical field [0001] The invention relates to the technical field of polysiloxane containing multiple functional groups and its preparation, in particular to an organopolysiloxane containing multiple functional groups of flame retardant elements and a preparation method thereof. The organopolysiloxane prepared by the invention can be used as an additive flame retardant. Background technique [0002] Organopolysiloxanes are used in the field of flame retardancy due to their high thermal stability, environmental protection, and halogen-free. However, because the traditional organopolysiloxane only contains a single silicon as a flame retardant element, it can only be applied to polymers (such as polycarbonate) with relatively good carbon forming properties, so its application range is limited to a certain extent. . So people began to explore the polycondensation of silane monomers containing different functional groups to combine functional groups with different flame reta...

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Problems solved by technology

[0005] CN1631942 discloses the use of phosphorus oxychloride, amino-containing silane, low-molecular-weight hydroxysiloxane, etc. as raw materials to synthesize a flame retardant containing silicon, phosphorus, nitrogen and other flame-retardant elements, but the preparation of the flame retardant The phosphorus oxychloride used is a toxic substance, and the corrosive gas of hydrogen chloride will be released during the reaction process, and the wastewater treatment in the later stage is complicated, resulting in an increase in cost

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