Check patentability & draft patents in minutes with Patsnap Eureka AI!

Vinyl modified star-shaped polycaprolactone and synthesis method thereof

A polycaprolactone and vinyl technology, which is applied in the field of vinyl-modified star-shaped polycaprolactone and its synthesis, can solve the problem that the support of parts is difficult to dismantle, it is difficult to meet the personalized customization requirements of fine-structure medical devices, and the precision is low. and other problems, to achieve the effect of good degradability, good biocompatibility and high precision

Inactive Publication Date: 2018-12-07
WUHAN INSTITUTE OF TECHNOLOGY
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Medical devices made of polycaprolactone have been widely used clinically, but at present, traditional melt injection molding processing technology is mainly used to process polycaprolactone materials into products. On the one hand, the existing common polycaprolactone material structure There is no unsaturated double bond or triple bond group in it, and it cannot be processed by light-curing three-dimensional forming additive manufacturing technology. Although it can be processed by fused deposition forming additive manufacturing technology, it is difficult to remove the support of the part and the precision is low. , it is difficult to meet the personalized customization requirements of fine-structured medical devices

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
  • Vinyl modified star-shaped polycaprolactone and synthesis method thereof
  • Vinyl modified star-shaped polycaprolactone and synthesis method thereof
  • Vinyl modified star-shaped polycaprolactone and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take 15.16g ε-caprolactone (0.105mol), 0.0092g of glycerol (0.1mmol), 105μL stannous octoate in anhydrous toluene solution (0.1mol / L), and add them into a dry polymerization bottle with a magnet in sequence, Then remove the solvent under reduced pressure, and then pass argon, and repeat this 4 times, and finally react the vacuum-sealed polymerization bottle at a constant temperature (120°C) for 48 hours, then dissolve the product with 100mL of dichloromethane, and then use 500mL of ethanol / n-hexane Alkanes (v / v=1:1) were reprecipitated, filtered and dried in vacuo to obtain 13.35 g of three-armed star-shaped polycaprolactone as a white solid, with a yield of 88%.

[0036] Under the protection of nitrogen, dissolve 12g (0.1mmol) three-armed star-shaped polycaprolactone in 100mL of dehydrated tetrahydrofuran, and keep magnetic stirring under ice bath conditions, first add 10.1g (0.1mol, 13.9mL) Triethylamine, and then slowly add 9.1g (0.1mol, 8.2mL) of acryloyl chloride d...

Embodiment 2

[0038] Take 50.05g ε-caprolactone (0.347mol), 0.0136g of pentaerythritol (0.1mmol), and 17.4 μL of anhydrous toluene solution of stannous octoate (0.1mol / L), and add them successively to a dry polymerization bottle with a magnet, and then Remove the solvent under reduced pressure, and then pass argon, and repeat this 4 times. Finally, react the vacuum-sealed polymerization bottle at a constant temperature (140°C) for 72 hours, then dissolve the product with 200mL of dichloromethane, and then use 1000mL of ethanol / n-hexane (v / v=1:1) reprecipitated, filtered and dried in vacuo to obtain 40.05 g of four-armed star-shaped polycaprolactone as a white solid, with a yield of 80%.

[0039] Under the protection of argon, dissolve 10g (0.02mmol) of four-armed star-shaped polycaprolactone in 30mL of dehydrated tetrahydrofuran, and keep magnetic stirring under the condition of ice bath, first add 80.8g (0.8mol, 111.2mL ) triethylamine, and then slowly dropwise added 84g (0.8mol, 86.6mL) o...

Embodiment 3

[0041] Take 20.04g ε-caprolactone (0.139mol), 0.18g cyclohexyl alcohol (1mmol), and 695μL stannous octoate solution in anhydrous toluene (0.1mol / L), add them to a dry polymerization bottle with a magnet in turn, and then Remove the solvent under reduced pressure, and then pass argon, and repeat this 4 times. Finally, react the vacuum-sealed polymerization bottle at a constant temperature (160°C) for 24 hours, then dissolve the product with 150mL of dichloromethane, and then use 750mL of ethanol / n-hexane (v / v=1:1) reprecipitated, filtered and dried in vacuo to obtain 16.98 g of white solid six-armed star-shaped polycaprolactone with a yield of 84%.

[0042]Under the protection of nitrogen, dissolve 10g (0.5mmol) six-armed star-shaped polycaprolactone in 40mL of dehydrated tetrahydrofuran, and keep magnetic stirring under ice bath conditions, first add 1.516g (3.75mmol, 2.08mL) Triethylamine, and then slowly add 1.89g (15mmol) of acrylic anhydride dropwise, during the dropwise a...

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
molecular weight distributionaaaaaaaaaa
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

The invention relates to vinyl modified star-shaped polycaprolactone and a synthesis method thereof. The synthesis method comprises that polyol and a cyclic caprolactone monomer as raw materials undergo a ring-opening polymerization reaction under the catalysis of stannous octoate to produce a star-shaped polycaprolactone polymer material and the star-shaped polycaprolactone is subjected to end group modification so that vinyl modified star-shaped polycaprolactone is obtained. The vinyl modified star-shaped polycaprolactone can be used as a polymer material for photocuring stereoformation andfused deposition formation additional material preparation.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a vinyl-modified star-shaped polycaprolactone and a synthesis method thereof. Background technique [0002] The raw material used in the stereoscopic additive manufacturing technology (SLA) is a liquid photosensitive resin containing unsaturated bonds, and other materials can also be added to form a composite material. It uses the ultraviolet laser beam under the control of the computer to scan the layered sections of the computer model point by point, so that the resin thin layer in the scanned area undergoes photopolymerization or photocrosslinking reaction and then cured. When one layer is cured , move the workbench in the vertical direction to cover the surface of the previously cured resin with a new layer of liquid resin, scan and cure layer by layer, and finally obtain a 3D prototype. SLA technology has the advantages of high precision, good surface quality, stabl...

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): C08G63/91C08G63/08
CPCC08G63/912C08G63/08
Inventor 鄢国平鄢珈睿刘凡杜飞鹏王玉芳陈思吴江渝
Owner WUHAN INSTITUTE OF TECHNOLOGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com