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

A kind of preparation method of high regularity polybutene-1 powder

A high-specificity, polybutene technology, applied in the field of polybutene-1 powder and its preparation, can solve the problems of long polybutene-1 crystal transformation period and the like

Active Publication Date: 2017-06-16
HEBEI UNIV OF TECH
View PDF12 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the purposes of the present invention is to provide a method for preparing high isotactic polybutene-1 powder for the deficiencies of the current technology, and the second purpose of the present invention is to solve the problem of long polybutene-1 crystal transformation period

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 preparation method of high regularity polybutene-1 powder
  • A kind of preparation method of high regularity polybutene-1 powder
  • A kind of preparation method of high regularity polybutene-1 powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1), preparation of catalytic components

[0048] (1) Vacuumize a 250ml three-necked flask, replace it with argon three times, add 3g (0.032mol) of anhydrous magnesium chloride under an argon atmosphere, 85ml (0.44mol) of inert solvent n-decane, 0.4g (0.0027mol) of phthalic anhydride mol), 35ml (0.22mol) of isooctyl alcohol, the system was heated up to 100°C for 2h, and naturally cooled to room temperature under the protection of argon to obtain alcohol and compound.

[0049] (2) Vacuumize the 500ml five-neck bottle, replace it with argon for 3 times, and add 50ml TiCl 4 , cooling down to -30°C--20°C in an ice-salt bath, drop the above-prepared alcohol compound into the five-necked bottle, and complete the dropwise addition within 2 hours.

[0050] (3) heat up to 80°C, keep warm for 2h,

[0051] (4) Remove the upper liquid after standing for 20 minutes. At this time, the temperature of the system is basically room temperature. Add 50ml of TiCl at this temperature 4 C...

Embodiment 2

[0057] (1), preparation of catalytic components

[0058] (1) Vacuumize a 250ml three-necked flask, replace it with argon three times, add 3g (0.032mol) of anhydrous magnesium chloride under an argon atmosphere, 85ml (0.44mol) of inert solvent n-decane, 0.4g (0.0027mol) of phthalic anhydride mol), 35ml (0.22mol) of isooctyl alcohol, the system was heated up to 100°C for 2h, and naturally cooled to room temperature under the protection of argon to obtain alcohol and compound.

[0059] (2) Vacuumize the 500ml five-neck bottle, replace it with argon for 3 times, and add 50ml TiCl 4 , cooling down to -30°C--20°C in an ice-salt bath, drop the above-prepared alcohol compound into the five-necked bottle, and complete the dropwise addition within 2 hours.

[0060] (3) heat up to 80°C, keep warm for 2h,

[0061] (4) Remove the upper liquid after standing for 20 minutes. At this time, the temperature of the system is basically room temperature. Add 50ml of TiCl at this temperature 4 C...

Embodiment 3

[0067] In a 2L stainless steel autoclave, after the system was replaced with nitrogen three times, 2.3ml of 1mol / L triethylaluminum solution was added successively under nitrogen protection (the solvent is n-hexane, the same as in the following examples), methylcyclohexyldimethoxy 0.075 mmol of silane, 20 mg of the supported Ziegler-Natta catalyst prepared in Example 1 (0.0076 mmol of titanium), 25 mg of lanthanum stearate and 25 mg of stearic acid, 473 g of propylene in liquid phase, pre-polymerized at 50° C. for 10 min. After the reaction, empty the propylene in the kettle, add 150g of butene-1 monomer, hydrogen 0.10MPa, polymerize at a constant temperature of 25°C for 8h, remove unreacted monomer by flash evaporation, and obtain polybutene-1 with a particle size of 0.1-3mm powder (such as figure 1 ), the catalyst activity is 4599g / g Cat, and the bulk density is 0.30g / cm 3 , the isotacticity of the polymer is 95.3%, the molecular weight distribution is 6.8, the polypropylen...

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
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of high-isotacticity polybutene-1 powder. The method comprises the following steps: sequentially adding a cocatalyst solution, an outer electron donor, a main catalyst, an assistant compound and a liquid-phase alpha-olefin into a tank reactor, prepolymerizing at 10-90 DEG C for 10-120 minutes, evacuating olefin gas, charging butylene-1 monomer and molecular weight regulator hydrogen gas, polymerizing at -10-90 DEG C for 1-20 hours, and carrying out flash evaporation on the unreacted monomer to obtain the high-isotacticity polybutene-1 powder. The polymerization method for synthesizing high-isotacticity polybutene-1 and powder thereof is simple in technique and easy to operate. The prepolymerization method solves the problem of difficulty in controlling the form of the polybutene-1 in the common catalytic polymerization method, and improves the problem of long crystal form transition period of the polybutene-1.

Description

[0001] Technical field: [0002] The invention relates to a polybutene-1 powder with high isotacticity and a preparation method thereof. [0003] technical background: [0004] High isotactic polybutene-1 has the characteristics of toughness, wear resistance, no scaling, high temperature resistance, non-toxicity, and excellent impact resistance. Compared with metal materials, the energy consumption of polybutene-1 pipes per unit volume is only 1 / 8-1 / 4 of steel and aluminum respectively; compared with other polyolefin materials, polybutene-1 can be used in Long-term use at 80-90°C, the upper limit of the service temperature can reach 110°C, it is an excellent material for hot water pipes. [0005] The traditional preparation method of high isotactic polybutene-1 includes gas phase method and liquid phase method. The gas phase polymerization process of polybutene-1 is usually carried out by gas phase fluidized bed process. As well as the Chinese patent CN 102040693 A, the buten...

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): C08F210/08C08F210/06C08F4/649
Inventor 刘宾元董小芳刘智博张莉杨敏崔晓鹏张广林
Owner HEBEI UNIV OF TECH
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