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

A kind of polyalkylsiloxane-polyolefin block copolymer and its preparation method and application

A technology of polyalkylsiloxane and polyolefin block, which is applied in the field of polyalkylsiloxane-polyolefin block copolymer and its preparation, can solve the problem of wide molecular weight distribution, high temperature and inconsistent product structure of the copolymer. Ideal and other problems, to achieve the effect of good modification effect, easy structure and good compatibility

Active Publication Date: 2017-07-14
黄山永创科技包装有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature of the coupling reaction is higher (150°C), the molecular weight distribution of the copolymer is wider (PDI=5-6), and the control of the product structure is not ideal

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
  • A kind of polyalkylsiloxane-polyolefin block copolymer and its preparation method and application
  • A kind of polyalkylsiloxane-polyolefin block copolymer and its preparation method and application
  • A kind of polyalkylsiloxane-polyolefin block copolymer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) In a flask equipped with a stirrer, condensing reflux, and inlet pipe, add 24.42g (0.182mol) tetramethyldisiloxane (that is, R is methyl in formula 3, and m is 1), 18.2 g (0.165 mol) octadiene (CAS: 3710-30-3), 0.128 g (10 ppm) platinum catalyst and 100 ml toluene. After the device was filled with nitrogen atmosphere, it was heated to 40° C. and stirred for 5 h. After the stirring was completed, unreacted raw materials and toluene were distilled off under reduced pressure at a temperature of 40° C. to obtain 38 g of light yellow transparent polyalkylsiloxane.

[0037] (2) 8.5g (3.36mmol) of the polyalkylsiloxane obtained in step (1), 25.50g (6.72mmol) of polyethylene and 50ml of toluene were added to a flask equipped with a stirrer, condensing reflux device, and inlet pipe , when the device was filled with nitrogen atmosphere, heated to 110°C and stirred for 10h. After the device was cooled, the toluene was removed by suction filtration under reduced pressure, and...

Embodiment 2

[0039] Repeat the steps of Example 1, except that the siloxane polymer of formula 3 with m=10 (instead of tetramethyldisiloxane) is added in step (1), and the reaction temperature of the first step is 80°C. final polymer through 1 H-NMR and infrared spectroscopy confirmed that it is a block copolymer with polyalkyl hybrid siloxane segment and polyethylene segment. 1 H-NMR analysis determined that the polymer had a siloxane content of 37.3 wt%. The polyalkylhybridsiloxane-polyolefin block copolymer had an Mn of 13800 g / mol as determined by GPC analysis.

[0040] [Formula 3]

[0041]

Embodiment 3

[0043] Repeat the steps of Example 1, except that the siloxane polymer of formula 3 with m=20 is added in step (1), and the reaction temperature of the first step is 80°C. final polymer through 1 H-NMR and infrared spectroscopy confirmed that it is a block copolymer with polyalkyl hybrid siloxane segment and polyethylene segment. 1 H-NMR analysis determined that the polymer had a siloxane content of 46.3 wt%. The polyalkylhybridsiloxane-polyolefin block copolymer had an Mn of 15200 g / mol as determined by GPC analysis.

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 discloses a polyalkysiloxane-polyolefin segmented copolymer as well as a preparation method and an application thereof. The structure of the copolymer is shown in formula (I), wherein R is methyl or ethyl or C3-C8 alkyl or phenyl, k is an integer from 5 to 300, and m is an integer from 1 to 30, n is an integer from 2 to 10, and the average number of q is 5-30. The polysiloxane-polyethylene segmented copolymer is used as a polyolefin processing modifier and the flowing property and mechanical property of the product can be effectively improved.

Description

technical field [0001] The invention belongs to the field of processing modifiers, in particular to a polyalkylsiloxane-polyolefin block copolymer and its preparation method and application. Background technique [0002] Polysiloxane has a wide range of applications as processing modifiers, surface modifiers, and flame retardants. However, due to the incompatibility between polysiloxane and carbon-based materials, polysiloxane easily migrates to the surface and spreads out, which hinders its application in the plastics industry. [0003] Various proposals have been made to improve the compatibility between polysiloxanes and polyolefins. For example, Dow Corning Multibase siloxane masterbatch series products prepare siloxane masterbatch by blending high molecular weight polysiloxane and polyolefin carrier, which overcomes the shortcoming that polysiloxane easily migrates to the surface, and can be used as polysiloxane A processing aid for olefins. However, due to the incom...

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): C08G81/02C08L23/00C08L23/06C08L87/00
Inventor 范宏金震李伯耿张先伟朱世平
Owner 黄山永创科技包装有限公司
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