Accelerator of platinum catalyst for hydrosilylation, preparation method and application thereof

A technology of hydrosilylation and accelerator, which is applied in the field of accelerators of platinum catalysts for hydrosilylation of olefins, can solve the problems of low catalytic activity and selectivity of the catalyst, and achieve easy control, good reproducibility and good catalytic effect. Effect

Inactive Publication Date: 2010-10-06
HANGZHOU NORMAL UNIVERSITY
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a catalyst for olefin hydrosilylation plati

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
  • Accelerator of platinum catalyst for hydrosilylation, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1: Modification of polyethylene glycol 200 (modified at one end) as an accelerator

[0026] Weigh 10.0g polyethylene glycol 200 (0.05mol) and 5.4g (0.055mol) maleic anhydride into a flask with a magnetic stirrer, heat to 80°C, stir and react for 5h, separate, and put the product After drying in a vacuum drying oven at 40°C for 24 hours, an accelerator, that is, the accelerator according to the present invention, is obtained.

[0027] Take 1.0 g of the above accelerator, add 1 ml of chloroplatinic acid tetrahydrofuran solution (containing 0.00026 g of chloroplatinic acid), and stir evenly to obtain a catalyst system with a platinum mass content of 0.01%.

[0028] Weigh 0.4g of the above catalyst, 9.6g (0.1mol) of styrene and 18.0g (0.11mol) of triethoxyhydrosilane in a 100ml single-necked flask, react for 1h in a silicone oil bath at 60℃, cool, and pass the product through GC -MS detection showed that the styrene conversion rate was 99.8%, and the β-addition product se...

Example Embodiment

[0035] Example 2: Polyethylene glycol 200 modification (double-end modification) as an accelerator

[0036] Weigh 10.0g polyethylene glycol 200 (0.05mol) and 10.8g (0.11mol) maleic anhydride into a flask with a magnetic stirrer, heat to 80°C, stir and react for 5h, separate, and put the product After drying in a vacuum drying oven at 40°C for 24 hours, an accelerator, that is, the accelerator according to the present invention, is obtained.

[0037] Take 1.0 g of the aforementioned accelerator, add 1 ml of chloroplatinic acid tetrahydrofuran solution (containing 0.00026 g of chloroplatinic acid), and stir evenly to obtain a catalyst system with a platinum mass content of 0.01%.

[0038] Weigh 0.4g of the above catalyst, 9.6g (0.1mol) of styrene and 18.0g (0.11mol) of triethoxyhydrosilane in a 100ml single-necked flask, react for 1h in a silicone oil bath at 60℃, cool, and pass the product through GC -MS detection showed that the styrene conversion rate was 100%, and the β-addition p...

Example Embodiment

[0044] Example 3: Polyethylene glycol 400 modified (modified at one end) as an accelerator

[0045] Weigh 20.0g polyethylene glycol 400 (0.05mol) and 5.4g (0.055mol) maleic anhydride into a flask with a magnetic stirrer, heat to 80°C, stir and react for 4h, separate, and put the product After drying in a vacuum drying oven at 40°C for 24 hours, an accelerator, that is, the accelerator according to the present invention, is obtained.

[0046] Take 1.0 g of the above accelerator, add 1 ml of chloroplatinic acid tetrahydrofuran solution (containing 0.00026 g of chloroplatinic acid), and stir evenly to obtain a catalyst system with a platinum mass content of 0.01%.

[0047] Weigh 0.4g of the above catalyst system, 9.6g (0.1mol) of styrene and 18.0g (0.11mol) of triethoxyhydrosilane in a 100ml single-necked flask, and react for 1h in a silicone oil bath at 60°C. After cooling, the product GC-MS detected that the styrene conversion rate was 98.4%, and the β-addition product selectivity wa...

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 synthesizing an alkoxy silane monomer, relating to an accelerator of a platinum catalyst for hydrosilylation, which is carboxyl-containing or ethylenic bond-carboxyl-containing modified polyethylene glycol obtained by reaction of polyethylene glycol or methoxy polyethylene glycol with anhydride. The invention also provides a preparation method for the accelerator and an application thereof. The preparation method for the accelerator comprises the following step of modifying the polyethylene glycol or methoxy polyethylene glycol molecular monomer by using anhydride at the temperature of between 20 and 150 DEG C. The accelerator serving as an auxiliary agent is used for establishing a catalyst system for addition reaction of unsaturated olefin and hydrogenalkoxysilane by platinum catalysis, and solves the technical problems that the conventional catalyst has poor catalytic activity and low selectivity.

Description

technical field [0001] The invention belongs to the field of synthesis of alkoxysilane monomers, and relates to a promoter for platinum catalysts, in particular to a promoter for olefin hydrosilylation platinum catalysts, a preparation method and application thereof. Background technique [0002] As we all know, alkoxysilane is a very important intermediate in the organosilicon industry. Alkoxysilane is usually prepared by addition reaction of unsaturated olefin and hydrogen-containing silane. Hydrosilylation reaction plays an important role in organic silicon synthesis chemistry, and is one of the most important ways to synthesize functional organic silicon monomers, silane coupling agents, functional organic silicon compounds and polymers. The most critical technology in the hydrosilylation reaction is the selection and preparation of the catalyst. The hydrosilylation of olefins usually directly uses chloroplatinic acid as the catalyst. Homogeneous catalysts have the char...

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): B01J31/06B01J31/28C07F7/18
Inventor 白赢彭家建厉嘉云蒋剑雄来国桥
Owner HANGZHOU NORMAL UNIVERSITY
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