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

Silanized polymer and preparation method and application thereof

A technology of silylation and polymer, which is applied in the field of silylation polymer and its preparation, can solve the problems of increased viscosity, high reactivity of amino group and NCO group, gelation, etc., achieve high end-capping rate and controllable reaction process , the effect of high molecular weight

Inactive Publication Date: 2019-04-16
ZHEJIANG XINAN CHEM INDAL GROUP
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can obtain high-molecular-weight polymers, the disadvantage of the reaction is that the amino group and NCO group have high reactivity, and are prone to a sharp increase in viscosity and even gelation.

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
  • Silanized polymer and preparation method and application thereof
  • Silanized polymer and preparation method and application thereof
  • Silanized polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Add 748.2g of monoallyl polyether alcohol (m=85, n=0, molecular weight about 4988) (0.15mol) to a 2L four-necked flask with a thermometer inserted, at 120°C, -0.090Mpa~-0.1Mpa vacuum Dehydration under pressure for 2h. After cooling down to room temperature, add 2.3g of 5000ppm (based on platinum content) Castel catalyst, stir and mix for 10-15min, heat up to 80°C, add dropwise 23.1g of trimethoxyhydrosilane (95% purity, 0.18mol), The reaction was stirred for 6-8 hours, and the slight excess of organosiloxane was removed under reduced pressure. Under the protection of inert gas, add 0.16g of dibutyltin dilaurate to the four-necked flask, mix and stir evenly, heat up to 80°C, add 20.96g (0.08mol) H 12 MDI was kept at 80°C for 5 hours to obtain the silylated polymer of the present invention.

[0081] The structure of the product was detected by infrared spectroscopy, and the analysis spectrum was as follows figure 1 , 2200cm -1 The near-NCO stretching vibration peak di...

Embodiment 2

[0085] Add 864.2g of monoallyl polyether alcohol (m=148, n=0, molecular weight about 8642) (0.10mol) into a 2L four-necked flask with a thermometer inserted, at 120°C, -0.090Mpa~-0.1Mpa vacuum Dehydration under pressure for 2h. After cooling down to room temperature, add 5.3g of 5000ppm (based on platinum content) Castel catalyst, stir and mix for 10-15min, heat up to 85°C, add dropwise 15.41g of trimethoxyhydrosilane (95% purity, 0.12mol), The reaction was stirred for 6-8 hours, and the slight excess of organosiloxane was removed under reduced pressure. Under the protection of inert gas, add 0.18g of dibutyltin dilaurate to the four-necked flask, mix and stir evenly, raise the temperature to 90°C, add 13.36g (0.051mol) H 12 MDI was kept at 90°C for 5 hours to obtain the silylated polymer of the present invention.

[0086] The structure of the product was detected by infrared spectroscopy, and the analysis spectrum was as follows image 3 As shown, 2200cm -1 The near-NCO s...

Embodiment 3

[0090] Add 864.2g of monoallyl polyether alcohol (m=148, n=0, molecular weight about 8642) (0.10mol) into a 2L four-necked flask with a thermometer inserted, at 120°C, -0.090Mpa~-0.1Mpa vacuum Dehydration under pressure for 2h. After cooling down to room temperature, add 5.3g of 5000ppm (based on platinum content) Castel catalyst, stir and mix for 10-15min, heat up to 90°C, add 12.85g of methyl dimethoxysilyl hydrogen (95% purity, 0.12 mol), stirred and reacted for 6-8 hours, and the slight excess of organosiloxane was removed under reduced pressure. Under the protection of inert gas, add 0.36g of dibutyltin dilaurate to the four-necked flask, mix and stir evenly, heat up to 80°C, add 11.34g (0.051mol) isophorone diisocyanate (IPDI), and keep warm at 90°C for reaction 5h to obtain the silylated polymer of the present invention.

[0091] The structure of the product was detected by infrared spectroscopy, and the analysis spectrum was as follows Figure 4 As shown, 2200cm -1...

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 provides a silanized polymer with the structure shown in the formula I. The viscosity of the polymer is low, and the polymer is conductive to addition of fillers in a sealant formula toimprove the mechanical properties. The process is easy to control, gelatinization does not easily occur, and the polymer can be applied to sealants and binders. Please see the formula in the description.

Description

technical field [0001] The invention relates to the technical field of sealants / adhesives, in particular to a silanized polymer and its preparation method and application. Background technique [0002] The silanized polymers used in building sealants are mainly silane-modified polyethers and silane-modified polyurethanes. This new type of hybrid polymer can be cured by moisture, and the elastic sealant / adhesive prepared by it is environmentally friendly. , low staining, good finishing performance, good weather resistance and durability, excellent bonding performance, convenient sizing operation and other advantages, and gradually replaced the traditional silicone sealant and PU polymer. [0003] At present, commercial silylated polymers mainly include MS polymer (MS) from KANEKA in Japan, STP series polymers from Wacker in Germany, and KERILON series polymers from RISUN POLYMER in China. thing. [0004] The preparation technology of silylated polymer is mainly based on the...

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): C08G18/50C08G18/73C08G18/75C09J175/08C09J11/04C09J11/06C08G65/336
CPCC08G18/5096C08G18/73C08G18/755C08G18/758C08G65/336C08G2650/04C08K2003/265C08K2201/011C09J11/04C09J11/06C09J175/08C08K13/06C08K3/346C08K3/26C08K3/36C08K5/12C08K5/1345
Inventor 金培玉朱瑞华徐璐方淑琴刘继
Owner ZHEJIANG XINAN CHEM INDAL GROUP
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