Phenoxymethyldisilane and its preparation method

Abstract

The invention discloses phenoxylmethyl siloxane shown as the formula (I) and a preparation method of phenoxylmethyl siloxane. The preparation method of the compound comprises the following steps of: taking raw materials according to the mole ratio of helium atoms in high-boiling-point chlorosilane waste liquid to phenol being 1: (1-1.5); adding phenol into a reactor, and dropwise adding the high-boiling-point chlorosilane waste liquid into the reactor at the temperature of 40 DEG C; after the dropwise adding operation is ended, heating to 60-100 DEG C, and reacting for 8-13h until no HCl is discharged; and carrying out reduced pressure distillation on the reacted materials, removing byproducts distilled at the temperature lower than 170 DEG C and incompletely-reacted phenol, and then, collecting a fraction, i.e., phenoxylmethyl siloxane as a product distilled at the temperature of 230-260 DEG C. The high-boiling-point chlorosilane waste liquid as an industrial waste is used as the raw material, and obtained phenoxylmethyl siloxane has good thermal stability, oxidation resistance and a high flash point and is suitable for hydraulic oil, diffusion pump oil and conduction oil. The formula of phenoxylmethyl siloxane is shown as (RO)nSi-Si(CH3)6-n (I).

Description

technical field

[0001] The invention belongs to a silicon compound and a method for preparing the silicon compound by mainly using waste, and relates to a phenoxymethyldisilane and a preparation method thereof. The phenoxymethyldisilane compound obtained by the invention can be applied to heat-resistant and oxidation-resistant heat-conducting oils. Background technique

[0002] Silicone monomers (methylchlorosilane, phenylchlorosilane, vinylchlorosilane, etc.) are the basis for the development of the entire silicone material industry, and the production of methylchlorosilane is the backbone of the development of the silicone industry. At present, the industrial production of organosilicon mainly adopts the direct synthesis of copper catalyzed chloroform and silicon powder to prepare methylchlorosilane, while organosilicon chemical industry produces organosilicon products by direct method, and a large amount of by-products (15% of the total output) are also produced. ~25%), ...