Organotin containing hyperbranched polysiloxane structure and preparation method therefor

Patent metadata

Field	Value
Publication number	US-9951188-B2
Application number	US-201515328008-A
Country	US
Kind code	B2
Filing date	May 28, 2015
Priority date	Jul 23, 2014
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A method of preparing an organotin containing hyperbranched polysiloxane structure includes the following steps: (1) by weight, 0.5-1.5 portions of hyperbranched polysiloxane with reactive functional groups is dissolved in 50-100 portions of an alcohol solvent, to obtain a solution A; (2) by weight, 0.5-0.9 portions of a tin-based initiator and 50-100 portions of the alcohol solvent are mixed to obtain a solution B, wherein said tin-based initiator is selected from dihydroxy butyl tin chloride, butyl tin trichloride, and dibutyl tin dichloride; and (3) dropping the solution B into the solution A at the temperature of 0° C.-60° C., reacting for 3-6 h, filtering and drying to obtain the organotin containing hyperbranched polysiloxane structure.

First claim

What is claimed is:

1. A method of preparing an organotin containing hyperbranched polysiloxane structure comprising the following steps:
(1) by weight, 0.5-1.5 portions of hyperbranched polysiloxane with reactive functional groups is dissolved in 50-100 portions of an alcohol solvent, to obtain a solution A;
(2) by weight, 0.5-0.9 portions of a tin-based initiator and 50-100 portions of the alcohol solvent are mixed to obtain a solution B, wherein said tin-based initiator is selected from dihydroxy butyl tin chloride, butyl tin trichloride, and dibutyl tin dichloride; and
(3) dropping the solution B into the solution A at the temperature of 0° C.-60° C., reacting for 3-6 h, filtering and drying to obtain the organotin containing hyperbranched polysiloxane structure.

2. The method according to claim 1 , wherein said hyperbranched siloxane with active functional groups has a molecular weight of 3500 to 9312, and the active functional groups are selected from an amino group, an epoxy group, a vinyl group, and a combination thereof.

3. The method according to claim 1 , wherein said alcohol solution is isopropanol, ethanol, or a combination thereof.

4. An organotin containing hyperbranched polysiloxane structure obtained by the method according to claim 1 .

Assignees

• Univ Soochow

Inventors

• Gu Aijuan
• Wang Yuanzhen
• Liang Guozheng
• Yuan Li

Classifications

• C08G77/398 Primary

  containing boron or metal atoms · CPC title

• C08G77/18

  to alkoxy or aryloxy groups · CPC title

• C08G77/26

  nitrogen-containing groups · CPC title

• C08G79/12 Primary

  a linkage containing tin · CPC title