Modified monomer and organic modified polysiloxane prepared thereby

A polysiloxane and organosilicon technology, applied in organic chemistry, silicon organic compounds, cosmetic preparations, etc., can solve the problems of unfavorable target product synthesis, many telomerization steps, low degree of polymerization, etc., and achieve a wide range of products , Strong designability and simple process

Active Publication Date: 2014-04-16
广州星业科技股份有限公司
View PDF8 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of its synthesis methods is the acid-catalyzed down-regulation polymerization of high hydrogen-containing silicone oil and cyclopolydimethylsiloxane mixture (DMC) or octamethylcyclotetrasiloxane (D4) into low-hydrogen silicone oil. There are many reaction steps, complicated operation, and the degree of polymerization is not high; the second synthesis method is to use hydrogen-containing double head, and/or) tetramethylcyclotetrasiloxane (D4H), and octamethylcyclotetrasiloxane (D4H), and octamethylcyclotetrasiloxane Siloxane (

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified monomer and organic modified polysiloxane prepared thereby
  • Modified monomer and organic modified polysiloxane prepared thereby
  • Modified monomer and organic modified polysiloxane prepared thereby

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0054] Example 1

[0055] Weigh 162.3g of stearyl alcohol and add it to a 500mL four-necked flask (the four-necked flask has a thermometer, a reflux device, a stirring device and nitrogen (N 2 ) introductory unit, where the return unit is interchangeable with the vacuum unit as required), N 2 Add 0.15g of tetramethylammonium hydroxide pentahydrate under the atmosphere, turn on the vacuum pump, control the vacuum at -0.08MPa, slowly heat up to 60 ℃ melt, after the melt, stir and dehydrate for 1h. After dehydration, release the vacuum, N 2 Under the atmosphere, use a reflux device instead, raise the temperature to 65°C, add 54.2 g of tetramethyldihydrodisiloxane dropwise within 1h, and after the dropwise addition, heat up to 70°C and react for 2h. After the reaction, the temperature was raised to 140° C., and the temperature was maintained for 1.5 h to decompose the catalyst to obtain the modified monomer.

Example Embodiment

[0056] Example 2

[0057] Weigh 145.47g palmitol and add it to a 500mL four-necked flask (the four-necked flask is equipped with a thermometer, reflux device, stirring device and N 2 Induction unit, where the return unit is interchangeable with the vacuum unit as required), N 2 Add 0.12g of tetramethylammonium hydroxide pentahydrate under the atmosphere, turn on the vacuum pump, control the vacuum at -0.095MPa, slowly heat up to 55 ℃ melt, after the melt, stir and dehydrate for 1.5h. After dehydration, release the vacuum, N 2 Under the atmosphere, use a reflux device instead, raise the temperature to 50°C, and dropwise add 52.7 g of tetramethyldihydrodisiloxane within 2h. After the reaction, the temperature was raised to 150° C., and the temperature was maintained for 1 h to decompose the catalyst to obtain the modified monomer.

Example Embodiment

[0058] Example 3

[0059] Weigh 200 g of polyether polyol (hydroxyl value 60 mg KOH / g) and add it to a 500 mL four-necked flask (the four-necked flask is equipped with a thermometer, reflux device, stirring device and N 2 Induction unit, where the return unit is interchangeable with the vacuum unit as required), N 2 Add 0.12g of tetramethylammonium hydroxide pentahydrate under the atmosphere, turn on the vacuum pump, control the vacuum at -0.09MPa, slowly heat up to 50 ° C melt, after the melt, stir and dehydrate for 2h. After dehydration, release the vacuum, N 2 Under the atmosphere, use a reflux device instead, raise the temperature to 80 °C, and add 13.2 g of 2,4,6,8-tetramethylcyclotetrasiloxane dropwise within 1 h. After the dropwise addition, the temperature is raised to 100 °C, and the reaction 1h. After the reaction, the temperature was raised to 160° C., and the temperature was maintained for 0.5 h to decompose the catalyst to obtain the modified monomer.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of fine chemical engineering production technologies, and discloses a modified monomer and organic modified polysiloxane prepared thereby. Firstly, dehydrogenation reaction is carried out on a monomer containing Si-H bond and a compound containing hydroxyl (-OH) so as to synthesize a modified monomer, then in the presence of a catalyst and/or end-capping reagent, equilibration reaction is carried out on the modified monomer and common organosilicone monomer so as to synthesize the organic modified polysiloxane. The prepared organic modified polysiloxane can be used as cosmetic additive, lubricant additive and brake oil additive. The preparation method is simple, is easy to operate and control, and less erodes the equipment; the prepared organic modified polysiloxane is well compatible with organic compounds and/or water soluble compounds, and also can be used as a reaction intermediate for synthesizing high molecular materials continuously, thus having extensive use.

Description

technical field [0001] The invention belongs to the technical field of fine chemical production, and in particular relates to a modified monomer and organic modified polysiloxane prepared from the modified monomer. Background technique [0002] Polydimethylsiloxane has many special properties such as hydrophobicity, interface activity, and thermal stability, and is widely used in industrial production, such as polyurethane foam stabilizers, emulsifiers, defoamers, and mold release agents. However, polydimethylsiloxane is poorly soluble in organic solvents and water, thus limiting the application of polydimethylsiloxane. By organically modifying polydimethylsiloxane, introducing oil-soluble and / or water-soluble organic groups into polysiloxane chain ends, and / or both ends, and / or side ends, can effectively solve this problem. One problem makes polydimethylsiloxane more widely used. [0003] The organic functional group is connected to the polydimethylsiloxane molecular chai...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G65/00C07F7/18C07F7/21C08G77/46C08G77/20C08G77/18A61K8/894A61K8/893C10M155/02
Inventor 谭意平孟巨光
Owner 广州星业科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap