Supercharge Your Innovation With Domain-Expert AI Agents!

Method for producing chlorinated propylene-containing polymer

A technology of a propylene polymer and a manufacturing method, which is applied in the manufacturing field of propylene-containing polymers, can solve the problems of high resin polarity, reduced chlorine utilization rate, long phase separation time, etc.

Active Publication Date: 2014-08-27
TOYOBO CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, pressure management is required from the point of view of the need to release the generated by-product hydrogen chloride gas to the outside of the system, and the chlorine utilization rate cannot be lowered inevitably from the point of view of releasing chlorine gas as hydrogen chloride gas to the outside of the system
[0006] Chlorination using a mixture of a chlorine-based solvent and water as listed in 4) above can easily secure a large amount of chlorine, but there is a problem that when the hydrochloric acid phase and the chlorine-based solvent phase separate after the chlorination reaction, the chlorine The polarity of the resin in the solvent is high, and it takes a long time for phase separation

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

[0065] In a 5000L glass-lined reaction tank, add 300kg of isotactic polypropylene (MFR at 230°C: 14g / min, melting point: 165°C) synthesized using Ziegler-Natta Catalyst, and 3,100kg of chloroform And deionized water 420kg, airtight.

[0066] While stirring the liquid in the reaction tank to disperse it, heating was started in the reaction tank, and chlorine gas was introduced at a rate of 80 kg / hour while heating. When the temperature in the tank reaches 115°C, the heating of the reaction tank is stopped but chlorine gas is continuously introduced, and the temperature in the tank is kept at 95-120°C by the heat of reaction. The maximum pressure in the reaction tank reaches 0.6MPa. The introduction of chlorine gas was stopped at the stage when 276 kg of chlorine gas was introduced after 3 hours and 30 minutes from the start of introduction of chlorine gas. After the liquid was continuously stirred for 10 minutes, 1.8 kg of a water-insoluble epoxy group-containing compound bis...

Embodiment 2

[0071] The same operation as in Example 1 was carried out except that 0.2 kg of oxygen was introduced before chlorine was introduced. The obtained chlorinated polypropylene had a chlorine content of 30.1%, and a weight average molecular weight of 140,000.

Embodiment 3

[0073] Except using isotactic propylene-ethylene copolymer (propylene:ethylene=97:3 molar ratio, MFR 2g / min, melting point 125°C) polymerized by a metallocene catalyst and introducing 3kg of oxygen before introducing chlorine, the same method as in Example 1 Do the same. The obtained chlorinated polypropylene had a chlorine content of 30.0%, and a weight average molecular weight of 95,000.

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
epoxy equivalentaaaaaaaaaa
epoxy equivalentaaaaaaaaaa
epoxy equivalentaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for producing a chlorinated propylene-containing polymer, which comprises the step of chlorinating the propylene-containing polymer in a mixed solution of a chlorinated solvent and water. Compared with the existing method, the method is An improved manufacturing method for more efficiently obtaining target objects. Specifically, the present invention is a method for producing a chlorinated propylene-containing polymer, which is characterized in that it includes the following steps: (1) polymerizing at least one propylene-containing polymer of polypropylene and propylene-α-olefin copolymer Disperse the product in a mixed solution containing chloroform and water to obtain a dispersion liquid; (2) under airtight, while heating the above dispersion liquid at a temperature below 130°C, introduce chlorine gas into the above dispersion liquid, by Step 2 of chlorinating the above-mentioned propylene-containing polymer; (3) step 3 of separating a chloroform-containing phase after adding a water-insoluble epoxy group-containing compound to the reaction liquid obtained in step 2 and standing still; and (4) Step 4 of obtaining a chlorinated propylene-containing polymer by distilling off chloroform from the chloroform-containing phase.

Description

technical field [0001] The present invention relates to a process for the manufacture of chlorinated propylene-containing polymers. Chlorinated propylene-containing polymers are represented by chlorinated polypropylene and chlorinated propylene-α-olefin copolymers. These polymers are used as adhesive components (adhesive components) for polypropylene substrates in coatings. , inks, adhesives and other purposes are widely used. Background technique [0002] Conventionally, known methods for chlorinating propylene-containing polymers (such as polypropylene) include: 1) a method of chlorinating polypropylene in a solid phase; 2) a method of suspending polypropylene in water for chlorination; 3) A method of chlorinating polypropylene by dissolving only in a chlorine-based solvent (such as chloroform), and 4) A method of chlorinating polypropylene by dispersing and dissolving it in a mixture of a chlorine-based solvent (such as chloroform) and water. [0003] However, the above...

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): C08F8/22C08F10/06
CPCC08F10/06C08F8/22C08L23/28
Inventor 矶本贤一郎
Owner TOYOBO CO LTD
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