Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of organosilicon composition and reaction product and its preparation method and application

A technology of reaction products and compositions, applied in the direction of adhesive additives, non-polymer adhesive additives, coatings, etc., to achieve the effects of overcoming catalyst poisoning, reducing reaction costs, and good yellowing resistance

Active Publication Date: 2021-10-15
INST OF CHEM CHINESE ACAD OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, when component (a) is selected from silicone resins that can undergo hydrosilylation reactions, the hydrosilylation catalyst used contains Pt components, and the problem of high yellowness index of the product cannot be avoided

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
  • A kind of organosilicon composition and reaction product and its preparation method and application
  • A kind of organosilicon composition and reaction product and its preparation method and application
  • A kind of organosilicon composition and reaction product and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The photocurable silicone in this embodiment is prepared according to the following method:

[0054] (1) The linear polysiloxane containing H in the side group is used as a raw material, mixed evenly with the siloxane of the structure shown in the formula (I) and 4wt% photoinitiator 1173; the unsaturated polysiloxane shown in the formula (I) Hydrocarbyl compounds, R 1 for vinyl, R 2 , B 1 , B 2 , B 3 , B 4 Both are methyl, Z 1 ,Z 2 Both - OSiPh(Me) 2 , n is 5; the molar ratio of Si-H in the linear polysiloxane containing H in the side group to the vinyl group in the siloxane of the structure shown in formula (I) is 1.4:1;

[0055] (2) UV-cure the mixture of step (1) under the protection of an inert gas, the UV wavelength is 280nm, and the light intensity is 50 μW / cm 2 ;, the reaction time is 5min, and the photocurable silicone with a curing depth of 50nm is prepared.

Embodiment 2

[0057] On the basis of embodiment 1, the present embodiment is different in that: R 1 For ethynyl groups, 2 wt% antioxidant Irganox-1010 was added to the mixture, and other conditions remained unchanged, to obtain a photocurable silicone with a curing depth of 80 nm.

Embodiment 3

[0059] This example is based on Example 2, with the difference that 8 wt% of the defoamer BASF A10 is added to the mixture, and other conditions remain unchanged, to obtain a photocurable silicone with a curing depth of 100 nm.

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

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
depthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an organosilicon composition, a reaction product and a preparation method and application thereof. The composition comprises Si-H functional polysiloxane, a compound containing an unsaturated hydrocarbon group and a photoinitiator, and the photoinitiator is The free radical photoinitiator triggers the hydrosilylation reaction between the Si-H function in the composition and the unsaturated hydrocarbon group under the irradiation of the energy source. The photocurable silicone provided by the present invention utilizes ultraviolet rays to excite free radical photoinitiators during the curing process to realize the hydrosilylation reaction. The product has excellent optical and mechanical properties and a low yellow index, and the reaction does not use traditional Catalysts containing noble metal elements commonly used in hydrosilylation greatly reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic hybridization, and in particular relates to an organosilicon composition, a reaction product, a preparation method and an application thereof. Background technique [0002] The modification or curing of polysiloxane is usually achieved through higher temperature and longer time treatment, resulting in higher time cost and energy cost. Therefore, many researchers have begun to use rapid prototyping UV curing to complete the above reaction, which reduces the time cost of the reaction and reduces the burden on the environment. [0003] The ultraviolet light curing reaction of polysiloxane requires the selection of specific photosensitive groups, and the types of photosensitive polysiloxanes that are widely used are mainly polysiloxanes containing acrylate groups and epoxy groups. For the UV curing of polysiloxane containing acrylate group, it has high reactivity, fast reaction rate, no add...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/05
CPCC08J3/24C08J5/18C08J2383/05C09D183/04C09J11/06C09J183/04C09D7/63
Inventor 曹新宇尚欣欣马永梅张榕本方世璧张京楠郑鲲叶钢
Owner INST OF CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com