Supercharge Your Innovation With Domain-Expert AI Agents!

Comb-type ultra-high molecular weight polymer and synthesis method thereof

A technology of ultra-high molecular weight and synthesis method, applied in the field of comb-type ultra-high molecular weight polymers and synthesis, can solve the problems such as the reports of comb-type alkyl methacrylate or comb-type alkyl acrylate, etc. Intelligent assembly line operation, smooth process, avoid the effect of explosion

Pending Publication Date: 2022-04-01
长春市兆兴新材料技术有限责任公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many reports on the preparation of comb-shaped polymers by living controllable polymerization methods, but there are no reports on comb-shaped alkyl methacrylates or comb-shaped alkyl acrylates.

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
  • Comb-type ultra-high molecular weight polymer and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment provides a kind of synthetic method of comb type ultra-high molecular weight polymethyl methacrylate, and concrete steps are as follows:

[0038](1) Preparation of comb-type halide initiator: weigh according to styrene: allyl 2-bromoisobutyrate: allyl isobutyrate: azobisisobutylcyanide mass ratio=100:12:110:0.8 Mix the reagents, add 500g of toluene solvent into a 1000mL reaction bottle, blow nitrogen gas, start stirring, and raise the temperature to 85°C, slowly add the mixed reagents dropwise, after the dropwise addition, keep the reaction at constant temperature for a period of time, spin Steam off the toluene to obtain powdered styrene and 2-bromoallyl isobutyrate copolymer, which is the comb-type halide initiator, and its N=10;

[0039] (2) Preparation of comb-shaped high-molecular-weight polymethyl methacrylate seeds: first take 100 g of methyl methacrylate that has been processed under reduced pressure distillation, and pass through nitrogen...

Embodiment 2

[0042] The present embodiment provides a kind of synthetic method of comb type ultra-high molecular weight polymethyl methacrylate, and concrete steps are as follows:

[0043] (1) Preparation of the comb-type halide initiator: take by weighing each Mix the reagents, add 500g of toluene solvent into a 1000mL reaction bottle, blow nitrogen gas, start stirring, and raise the temperature to 85°C, slowly add the mixed reagent dropwise, after the dropwise addition, keep the reaction at constant temperature for a period of time, and spin out the toluene , the powdered styrene and 2-bromo allyl propionate copolymer is the comb-type halide initiator, and its N=15;

[0044] (2) Preparation of comb-shaped high-molecular-weight polymethyl methacrylate seeds: first take 100 g of methyl methacrylate that has been processed under reduced pressure distillation, and pass through nitrogen to remove oxygen for later use. In a 1000 mL three-necked reaction flask, add 500 g of ethyl acetate , sti...

Embodiment 3

[0047] The present embodiment provides a kind of synthetic method of comb type ultra-high molecular weight polymethyl methacrylate, and concrete steps are as follows:

[0048] (1) preparation of comb type halide initiator: with embodiment 1 step (1);

[0049] (2) the preparation of comb type high molecular weight polymethyl methacrylate seed: with embodiment step 1 (2)

[0050] (3) Synthesis of comb-type ultra-high molecular weight polymethyl methacrylate: get 120g comb-type high-molecular-weight polymethyl methacrylate seed solution, wherein, comb-type high-molecular-weight polymethyl methacrylate content is 20g, in nitrogen Under protection, transfer to a 2L reaction kettle with a double planetary mixer, stir with nitrogen, adjust the temperature to 80°C, wait for reflux in the condenser tube, slowly add 1500g of methyl methacrylate monomer dropwise, and the dropping speed is the same as that in the condenser tube It is advisable for the reflux to be stable. While adding d...

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 comb-type ultra-high molecular weight polymer and a synthesis method, the molecular weight of the synthesized polymer can be controlled, firstly, a comb-type halide initiator is prepared, N side chain ends of the comb-type halide initiator all contain organic halides capable of initiating polymerization reaction, the method comprises the following steps: preparing a comb-type halide initiator, preparing a polymer seed with high relative molecular weight by using the comb-type halide initiator through a solution polymerization method, initiating a monomer by using the polymer seed to form a polymer with ultra-high molecular weight, and the comb-type polymer contains N side chains, so that the molecular weight of the comb-type polymer is N times of that of a linear ultra-high molecular weight polymer. The molecular weight or molecular morphology is too large, so that the material is more suitable for preparation of some devices requiring strength and hardness or surface modification of some devices; the process is smooth and suitable for large-scale industrial production, and the weight-average molecular weight of the comb-type ultra-high molecular weight polymer prepared by the method is higher than 10,000,000.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and in particular relates to a comb-shaped ultrahigh molecular weight polymer and a synthesis method. Background technique [0002] Comb polymers are a type of polymers with a special structure that have only started in recent years. They are shaped like a comb and consist of a main chain and N side chains. Comb polymers with long main chains and short side chains are very similar to branched polymers in performance, with poor fluidity, but comb polymers are more regular than branched polymers. This type of comb polymer is more used for some functional additives, such as surfactants, adsorbents, adhesives, etc. The performance of comb polymers with short main chains and long side chains is closer to that of Linear polymers have relatively good fluidity, and comb polymers with short main chains and long side chains are also mainly used in some functional additives. So far, they have been r...

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): C08F263/02C08F257/02C08F220/24C08F220/22C08F220/14C08F220/18C08F230/08C08F2/06C08F2/02
Inventor 韩兆让
Owner 长春市兆兴新材料技术有限责任公司
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