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

Tung oil polyol based anionic polyurethane with post-crosslinking capacity and preparation method of anionic polyurethane

A tung oil polyol and anion technology is applied in the field of polymer materials to achieve the effects of being beneficial to industrial production and popularization and application, low reaction temperature, and improved thermal stability.

Active Publication Date: 2016-06-22
HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant literature report on the introduction of HTO into the soft segment region of polyurethane

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
  • Tung oil polyol based anionic polyurethane with post-crosslinking capacity and preparation method of anionic polyurethane
  • Tung oil polyol based anionic polyurethane with post-crosslinking capacity and preparation method of anionic polyurethane
  • Tung oil polyol based anionic polyurethane with post-crosslinking capacity and preparation method of anionic polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] After the reaction raw materials were fully dried, 19.2 g of isophorone diisocyanate (IPDI) and 13.2 g of hydroxylated tung oil were added to the four-necked bottle, and heated to 90° C. under nitrogen protection and stirring. When the NCO reached the theoretical value, Lower the temperature and add 35.89 g of polytetrahydrofuran diol (PTMG-2000) with a molecular weight of 2000 after drying and dewatering to continue the temperature rise reaction.

[0035] After the reaction in the previous step was completed, 3.97g of dimethylolpropionic acid (DMPA) was added to dissolve and cool down, then 11.97g of IPDI was added, and the temperature was slowly raised to 90°C for 2.5h. When the NCO reaches the theoretical value, cool the product with adjusted viscosity, add 2.99g of triethylamine, and after 20 minutes of neutralization, add distilled water and 2.96g of ethylenediamine, stir and mix at a high speed, so that the solid content of 30% can be obtained. Hydroxylated tung o...

Embodiment 2

[0036] Embodiment two: improve hydroxylated tung oil content

[0037] After the reaction raw materials are fully dried, add 10.9g of isophorone diisocyanate (IPDI) and 10.2g of hydroxylated tung oil, and heat to 90°C under nitrogen protection and stirring. When the NCO reaches the theoretical value, cool down and add dry water The polytetrahydrofuran glycol (PTMG) 21.6g that molecular weight is 1800 continues heating up reaction.

[0038] After the reaction in the previous step was completed, 2.41 g of dimethylolpropionic acid (DMPA) was added to dissolve and cool down, then 8.97 g of IPDI was added, and the temperature was slowly raised to 90°C for 2.5 hours. When the NCO reaches the theoretical value, cool the product with adjusted viscosity, add 1.81 g of triethylamine, neutralize for 20 minutes, add distilled water and 1.44 g of ethylenediamine, stir and mix at a high speed.

Embodiment 3

[0039] Embodiment three: reduce hydroxylated tung oil content

[0040] After the reaction raw materials are fully dried, add 7.98g of isophorone diisocyanate (IPDI) and 2.78g of hydroxylated tung oil, and heat to 90°C under nitrogen protection and stirring. When the NCO reaches the theoretical value, cool down and add dry water The polytetrahydrofuran diol (PTMG-2000) 27.38g that molecular weight is 2000 continues heating up reaction.

[0041] After the reaction in the previous step was completed, 3.05g of dimethylolpropionic acid (DMPA) was added to dissolve and cool down, then 6.17g of IPDI was added, and the temperature was slowly raised to 90°C for 2.5h. When the NCO reaches the theoretical value, cool the product with adjusted viscosity, add 2.3g of triethylamine, neutralize it for 20 minutes, add distilled water and 3.65g of ethylenediamine, stir and mix at a high speed.

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
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

The invention discloses tung oil polyol based anionic polyurethane with post-crosslinking capacity and a preparation method of anionic polyurethane and belongs to the technical field of polymer synthesis. According to the method, tung oil polyols or hydroxylated tung oil containing conjugated double bonds, dimethylolpropionic acid, PTMG, ethylenediamine, HMDI or isophorone diisocyanate and the like are taken as raw materials, the hydroxylated tung oil is introduced into a polyurethane soft-segment structure by controlling a feeding sequence, and a anionic polyurethane dispersion containing hydrophilic inner salt groups and the conjugated double bonds is prepared through triethylamine neutralization. A formed film after partial crosslinking of the double bonds has excellent water resistance and solvent resistance, compared with common anionic waterborne polyurethane containing no conjugated double bonds, waterborne polyurethane has better water resistance, alcohol resistance, tensile strength, modulus and thermal stability, and the mechanical properties of anionic polyurethane are improved along with increase of the hydroxylated tung oil content and the crosslinking density and can be regulated by changing the crosslinking degree.

Description

technical field [0001] The invention relates to ionic polyurethane, in particular to anionic polyurethane derived from tung oil polyol and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] The modern polymer material industry, including polyurethane, is developed on the basis of the petrochemical industry. To date, almost all polymers are derived from petrochemicals, and the vast majority of materials are not biodegradable. Therefore, seeking efficient, cheap, renewable and sustainable new resources, as well as exploring and researching environmentally friendly green materials, must become an important topic for human survival and development and to solve environmental pollution. [0003] Polyurethane is a kind of multi-block polymer composed of soft and hard segments with excellent comprehensive performance and strong hydrogen bond effect. It is widely used in various fields of industry, agriculture and daily life, and...

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): C08G18/66C08G18/48C08G18/36C08G18/34C08G18/32
CPCC08G18/0823C08G18/3228C08G18/348C08G18/36C08G18/4854C08G18/6681C08G18/6692C08G18/6696
Inventor 姜垒任志勇付阳马恒印任百霞张家祥曹继红朱诚身肖汉雄
Owner HIGH & NEW TECH RES CENT OF HENAN 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