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

Organic fluorine-silicone-polyurethane block copolymer synthesizing method

A technology of block copolymer and polyurethane is applied in the field of synthesis of organofluorosilicon-polyurethane block copolymer, which can solve the problems of complex preparation method and high cost, and achieve the effect of avoiding the synthesis process.

Inactive Publication Date: 2016-06-08
QINGDAO UNIV OF SCI & TECH
View PDF10 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method is complex and expensive

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
  • Organic fluorine-silicone-polyurethane block copolymer synthesizing method
  • Organic fluorine-silicone-polyurethane block copolymer synthesizing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Under nitrogen protection, 2.63 g of diphenylmethane diisocyanate was added to the reaction flask, stirred, and a mixed solution containing 200 g of solvent and 100 g of α,ω-aminopropyl polymethyltrifluoropropyl siloxane was added dropwise at room temperature, and the mixture was added dropwise. After finishing, pre-polymerize for 2h, use 1 HNMR and HG / T2409-1992 "Determination of Isocyanate Group Content in Polyurethane Prepolymers" two methods to accurately determine the -NCO content in prepolymers, and then gradually add quantitative chain extender ethylenediamine to ensure -NH 2 The molar content is equal to the molar content of -NCO in the prepolymer, the reaction is continued for 6 hours, the temperature is raised to 120° C. to remove the solvent, and the organofluorosilicon-polyurethane block copolymer is obtained.

Embodiment 2

[0031] The procedure described in Example 1 was repeated, except that 1,6-hexamethylene diisocyanate was 1.77 g.

Embodiment 3

[0033] The procedure described in Example 1 was repeated, except that isophorone diisocyanate was 2.33 g.

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 relates to an organic fluorine-silicone-polyurethane block copolymer synthesizing method. The method includes prepolymerizing alpha, omega-amino-hydrocarbon poly-fluorosilicone and diisocyanate in solvent, adding chain extender into prepolymer for extending chain, and removing the solvent to obtain the organic fluorine-silicone-polyurethane block copolymer. With the organic fluorine-silicone-polyurethane block copolymer, molecular structure design and performance control can be realized according to chain length of the poly-fluorosilicone and the structure of the diisocyanate, and chain segments of the poly-fluorosilicone have the features of excellent water resistance, low surface performance and others. The polyurethane chain segments are excellent in thermal stability and wear resistance. The organic fluorine-silicone-polyurethane block copolymer synthesizing method has great application potential in antifouling coatings, leather, textiles, papermaking and modification of fiber surfaces.

Description

technical field [0001] The invention belongs to the technical field of organosilicon polymers, and particularly relates to a method for synthesizing an organofluorosilicon-polyurethane block copolymer. Background technique [0002] Silicone-polyurethane block copolymers are a promising class of polymer materials. The organofluorosilicon-polyurethane block copolymer synthesized with polyfluorosiloxane as the soft segment has both the excellent properties of polyfluorosiloxane and polyurethane, not only has extremely low surface energy, but also has good properties. Low temperature flexibility, water resistance, dielectric properties, surface enrichment, etc., can not only overcome the shortcomings of poor mechanical properties of polyfluorosiloxane, but also make up for the lack of weather resistance of polyurethane. , papermaking, fiber processing and other fields have huge application potential. [0003] At present, there are two main methods for synthesizing the silicone...

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 Applications(China)
IPC IPC(8): C08G18/66C08G18/61C08G18/32C08G18/10
CPCC08G18/10C08G18/61C08G18/3228
Inventor 刘月涛朱丹高传慧王传兴武玉民
Owner QINGDAO UNIV OF SCI & TECH
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