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

Polycarbodiimide crosslinking agent, its preparation method, application, and composition containing it

A polycarbodiimide and cross-linking agent technology, applied in organic chemistry, coating, etc., can solve problems such as low reactivity, poor substrate adhesion, and coating hardness that cannot meet the requirements, and meet equipment requirements Low cost, low cost, good alcohol resistance

Active Publication Date: 2022-06-28
SHANGHAI LANGYI FUNCTIONAL MATERIALS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the water-soluble polycarbodiimide crosslinking agent has low reactivity, the hardness of the coating after crosslinking cannot meet the requirements, and the adhesion of substrates such as PET is not good. And provide a kind of polycarbodiimide crosslinking agent and its preparation method, application, composition containing it

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
  • Polycarbodiimide crosslinking agent, its preparation method, application, and composition containing it
  • Polycarbodiimide crosslinking agent, its preparation method, application, and composition containing it
  • Polycarbodiimide crosslinking agent, its preparation method, application, and composition containing it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Add 1000g of hexamethylene diisocyanate (HDI) into a 5L three-necked flask, protect it with nitrogen gas, add 2g of 3-methyl-1-phenyl-2-phosphene-1-oxide (MPPO), and keep at 160°C The reaction was carried out for 8 hours to obtain a HDI prepolymer (0.99mol) with a degree of polymerization of about 5. The temperature of the system was lowered to 120° C., 235 g (1.99 mol) of butoxyethanol was added, and the reaction was carried out for 2 hours. The NCO value of the system dropped to 0, and 1016 g of polycarbodiimide compound was obtained. Get 76g diisooctyl sulfonate sodium succinate and dissolve and disperse in 1524g propylene glycol methyl ether acetate (solubility parameter is 9.4), join in the polycarbodiimide compound while stirring, after stirring for 1h, the solid content obtained is 40 % translucent liquid, which is the final highly reactive water-soluble polycarbodiimide crosslinker A.

Embodiment 2

[0081] Add 1000g of isophorone diisocyanate (IPDI) into a 5L three-necked flask, protect it with nitrogen gas, add 2g of 3-methyl-1-phenyl-2-phosphene-1-oxide (MPPO), at 160°C After 12 hours of reaction, an IPDI prepolymer (0.75 mol) with a degree of polymerization of about 5 was obtained. The temperature of the system was lowered to 120° C., 179 g (1.51 mol) of butoxyethanol was added, and the reaction was carried out for 2 hours. The NCO value of the system dropped to 0, and 1014 g of polycarbodiimide compound was obtained. Get 76g of diisooctyl sulfonate sodium succinate and dissolve and disperse it in 1521g of propylene glycol methyl ether acetate (solubility parameter is 9.4), join in the polycarbodiimide compound while stirring, after stirring for 1h, the solid content is 40 % translucent liquid, which is the final highly reactive water-soluble polycarbodiimide crosslinker B.

Embodiment 3

[0083] Add 1000g of dicyclohexylmethane diisocyanate (HMDI) to a 5L three-necked flask, protect it with nitrogen gas, add 2g of 3-methyl-1-phenyl-2-phosphene-1-oxide (MPPO), and heat at 160°C The reaction was carried out for 24 hours to obtain a HMDI prepolymer (0.63mol) with a degree of polymerization of about 5. The temperature of the system was lowered to 120° C., 150 g of butoxyethanol (1.27 mol) was added, and the reaction was carried out for 2 hours. The NCO value of the system dropped to 0, and 996 g of polycarbodiimide compounds were obtained. Get 75g diisooctyl sulfonate sodium succinate and dissolve and disperse in 1494g propylene glycol methyl ether acetate, join in the polycarbodiimide compound while stirring, obtain the translucent liquid that solid content is 40% after stirring 1h, That is the final highly reactive water-soluble polycarbodiimide crosslinker C.

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
thicknessaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polycarbodiimide crosslinking agent, its preparation method, application and composition containing it. The polycarbodiimide crosslinking agent comprises a compound shown in formula (1) and a water-soluble organic solvent; wherein: in the compound shown in formula (1), R 1 It is a divalent aliphatic hydrocarbon group with 1-18 carbon atoms or a divalent alicyclic hydrocarbon group with 3-13 carbon atoms, R 2 It is a divalent aliphatic hydrocarbon group with 1-10 carbon atoms, R 3 is H, an alkyl group with 1-5 carbon atoms or an alkoxy group with 1-5 carbon atoms, and n is 1-10. The polycarbodiimide crosslinking agent provided by the present invention has high reactivity at room temperature, can quickly crosslink and solidify, and has broad application prospects in the field of water-based coatings / adhesives.

Description

technical field [0001] The invention relates to a polycarbodiimide crosslinking agent, its preparation method, application and composition containing it. Background technique [0002] In recent years, with the strengthening of my country's environmental protection and the successive introduction of "oil to water" policies, water-based resins have developed rapidly. Compared with traditional solvent-based resins, although water-based resins have many advantages, some of their defects, such as low degree of crosslinking, poor mechanical properties, weak adhesion to certain substrates, unsatisfactory solvent resistance, and water resistance, are also disadvantages. restricted its development. Therefore, water-based resins are often used together with water-based crosslinking agents to improve their performance. As we all know, aziridine and carbodiimide are two crosslinking agents that can react with carboxyl groups. Aziridine has high reactivity, but short pot life and high...

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): C08G18/02C09D133/04C09D7/63C09D7/65C07C267/00
CPCC08G18/025C09D133/04C09D7/63C09D7/65C07C267/00C08K5/29C08L79/00
Inventor 唐晓峰丁群董建廷张文彬
Owner SHANGHAI LANGYI FUNCTIONAL MATERIALS
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