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

A kind of non-tin catalyzed silane-modified polyether sealant and preparation method thereof

A silane-modified polyether, non-tin-catalyzed silane technology, applied in polyether adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problem of neglecting the control of sealant curing speed and surface drying time. , to achieve the effect of moderate curing speed and surface drying time, conducive to construction and good adhesion

Active Publication Date: 2021-11-23
COLLTECH DONGGUAN BONDING TECH CO LTD
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Through the introduction of the above-mentioned prior art, it can be understood that the catalysts of most silane-modified polyether sealants on the market are tin-containing catalysts, and most of the improvement of sealant performance is in its adhesion and mechanical properties, while Neglected control of sealant curing speed and tack free time

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 non-tin catalyzed silane-modified polyether sealant and preparation method thereof
  • A kind of non-tin catalyzed silane-modified polyether sealant and preparation method thereof
  • A kind of non-tin catalyzed silane-modified polyether sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0058] The structure of silane modified polyether polymer is as follows:

[0059]

[0060] Put the pre-treated allyl-terminated polyether with a molecular weight of 12000 (Hangzhou Danwei Technology Co., Ltd., AEA series) and methyldimethoxysilane into a four-necked flask at a molar ratio of 1:2, and then add 15ppm chlorine Platinum acid catalyst, feed nitrogen and start stirring, heat up to 80°C and react for 5 hours. After the reaction, reduce the pressure to -0.09MPa, and evaporate under reduced pressure at 80°C for 0.5 hours to prepare silane-modified polyether polymer Ⅰ .

preparation example 2

[0062] The structure of silane modified polyether polymer is as follows:

[0063]

[0064] Put the pretreated allyl-terminated polyether with a molecular weight of 12000 (Hangzhou Danwei Technology Co., Ltd., AEA series) and trimethoxysilane into the four-necked flask according to the molar ratio of 1:2, and then add 15ppm chloroplatinic acid catalyst , feed nitrogen and start stirring, heat up to 80°C and react for 5 hours. After the reaction, reduce the pressure to -0.09MPa, and evaporate under reduced pressure at 80°C for 0.5 hour to prepare silane-modified polyether polymer II.

preparation example 3

[0066] The structure of silane modified polyether polymer is as follows:

[0067]

[0068] Dehydrate and degas 100 parts of polyethylene glycol with a molecular weight of 16000 under vacuum conditions at 110°C for 2 hours, cool down to 60°C, and add isocyanate propylmethyldimethoxysilane in sequence (so that the molar ratio of isocyanate to hydroxyl is 1:1), triethylamine (accounting for 0.1% of the mass of polyethylene glycol), high-purity nitrogen gas was introduced as a reaction protective gas, stirred evenly, and reacted at 90°C for 1 hour to obtain silane-modified polyether polymer III .

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 discloses a non-tin catalyzed silane-modified polyether sealant. The raw material for preparing the silane-modified polyether sealant includes a silane-modified polyether polymer with a mass fraction of 50-80%. The silane-modified The polyether polymer is a combination of two or more. The raw materials for preparing the silane-modified polyether sealant of the present invention also include polyhydroxy polymers and / or polyamino polymers, the polyhydroxy polymers are selected from polyacrylic acid polyols, and the polyamino polymers are selected from polyamino polyethers. The silane-modified polyether sealant provided by the invention is non-tin catalyzed, non-toxic and tasteless; the product has a moderate dry time and a good curing depth, which is beneficial to construction; and has good adhesion to various substrates, especially metal substrates. It is very suitable for mainstream electronic products now.

Description

technical field [0001] The invention belongs to the technical field of industrial sealant materials, and in particular relates to a non-tin-catalyzed silane-modified polyether sealant and a preparation method thereof. Background technique [0002] Nowadays, with the rapid development of high technology, mainstream electronic products such as mobile phones, tablet computers, and Bluetooth headsets have entered our daily life with their vigorous vitality, changing our work, study, and lifestyle. As electronic products become more and more refined and convenient, the corresponding electronic product materials and assembly technologies are also being introduced. At present, the more common electronic product materials on the market are mainly plastics, alloys and composite materials. Among them, plastics generally use high molecular polymer materials, such as polyethylene (PE), polypropylene (PP), polycarbonate (PC), modified polystyrene (ABS), polymethyl methacrylate (PMMA) an...

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): C09J171/02C09J11/04C08G65/336
CPCC08G65/336C08K2003/2241C08K2003/265C08K2201/011C09J11/04C09J171/02C08L71/02C08K13/04C08K7/26C08K3/26C08K3/22
Inventor 何培林蔡伟黄成生
Owner COLLTECH DONGGUAN BONDING TECH CO LTD
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