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

Catalyst for use in ternary polymerization of norbornene, maleic anhydride and cyclohexene and ternary polymerization method

A cyclohexene ternary and norbornene technology, which is applied in the field of maleic anhydride, norbornene, and cyclohexene ternary copolymerization, can solve the problems of low copolymer yield, unreached yield, long reaction time, etc. , to achieve the effect of high copolymer yield, low reaction temperature and high catalytic efficiency

Inactive Publication Date: 2012-10-03
NINGBO UNIVERSITY OF TECHNOLOGY
View PDF2 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing norbornene, maleic anhydride, acrylic acid ester or styrene copolymers are mainly synthesized by free radical polymerization, and the reaction time is long and the yield of the copolymer is obtained in the synthesis process catalyzed by metal complexes. Inferior disadvantages
If a Ni / Al metal complex is used to catalyze the copolymerization of norbornene and tert-butyl methacrylate, the yield does not reach 10% after about 8 hours of polymerization

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 20 ml of tetrahydrofuran, 0.01 mol of ferric chloride, 0.10 mol of 8-hydroxyquinoline, and 0.10 mol of triethylaluminum to a one-mouth glass bottle that has been evacuated several times and baked with nitrogen. Keep the temperature constant for 30 minutes, and then obtain the iron complex catalyst after cooling.

Embodiment 2

[0029] In a single-necked glass bottle that has been evacuated several times and baked with nitrogen, add 20 ml of anisole, 0.01 mol of ferric chloride, 0.08 mol of α,α,-bipyridine and 0.10 mol of triisobutylaluminum, Keep the temperature in a water bath at 50°C for 30 minutes, and then obtain the iron complex catalyst after cooling.

[0030] Add 0.024 moles of bicyclic 1-methylbicyclo[2,2,1]hept-2-ene, 0.024 moles of maleic anhydride, and 0.024 moles of 3-methylcyclohexene into a 25ml nitrogen-filled single-port polymerization bottle, and add 5ml of toluene was dissolved. Take 1% of the above-mentioned catalyst according to the total weight of norbornene, maleic anhydride and cyclohexene, and inject it into the above-mentioned mixture with a syringe. Put it into a constant temperature water tank, and react at 70° C. for 2 hours. The product was poured into methanol solution containing 5% hydrochloric acid to precipitate the terpolymer of norbornene, maleic anhydride and cyc...

Embodiment 3

[0032] Add 20 ml of 1,4-dioxane, 0.01 mol of ferric chloride, 0.07 mol of phenanthroline and 0.08 mol of triethylzinc into a single-mouthed glass bottle that has been evacuated several times and baked with nitrogen. , keep the temperature in a water bath at 50°C for 20 minutes, and after cooling, the iron complex catalyst is obtained.

[0033] Add 0.024 moles of bicyclic 5-methylbicyclo[2,2,1]hept-2-ene, 0.024 moles of maleic anhydride, and 0.024 moles of 4-methylcyclohexene into a 25ml nitrogen-filled single-port polymerization bottle, and add 5ml of toluene was dissolved. Take 0.1% of the above catalyst according to the total weight of norbornene, maleic anhydride and cyclohexene, and inject it into the above mixture with a syringe. Put it into a constant temperature water bath, and react at 60° C. for 2 hours. The product was poured into methanol solution containing 5% hydrochloric acid to precipitate the terpolymer of norbornene, maleic anhydride and cyclohexene. The pre...

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 a catalyst for use in ternary polymerization of norbornene, maleic anhydride and cyclohexene and a ternary polymerization method. The catalyst is characterized by being prepared by using a method comprising the following steps of: dissolving ferric trichloride, a ligand and an alkyl metal compound into a first solvent, putting into a dry single-mouth glass bottle in an inert atmosphere, sealing a bottleneck with a latex tube, preserving heat in a water bath of 50 DEG C for 20-30 minutes, and cooling to obtain an iron complex catalyst; adding norbornene, maleic anhydride and cyclohexene into a dry single-mouth glass bottle in an inert atmosphere, adding a second solvent into the single-mouth glass bottle, dissolving, and sealing the bottleneck; adding the iron complex catalyst into the single-mouth glass bottle, and reacting at the constant temperature of 40-100 DEG C for 2-3 hours; and precipitating an obtained reaction product, washing and drying to obtain a norbornene-maleic anhydride-cyclohexene terpolymer. The catalyst provided by the invention can be used for catalyzing polymerization under the normal pressure at a low temperature, and the copolymer yield is high.

Description

technical field [0001] The present invention relates to the field of polymer synthesis, specifically a catalyst for ternary copolymerization of norbornene, maleic anhydride and cyclohexene and the use of the catalyst for ternary copolymerization of norbornene, maleic anhydride and cyclohexene Methods. Background technique [0002] Polynorbornene is a special polymer with excellent mechanical properties, heat resistance, solubility in organic solvents and transparency, and can be used for 193nm ultraviolet lithography. The main disadvantages of polynorbornene are poor brittleness, poor viscosity and low molecular weight. After inserting maleic anhydride and cyclohexene into the main chain of polynorbornene, it can improve the cohesiveness and solubility of the polymer, so that it has a high glass transition temperature and improves its fragility in film formation , and can reduce the absorbance of the material itself, this copolymer can be used as a photoresist material in ...

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): C08F232/08C08F222/06C08F232/04C08F4/70
Inventor 房江华高浩其胡敏杰肖勋文杨建平
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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