Preparation method for polypropylene grafted maleic anhydride with high graft ratio and low odor

A polypropylene grafting and maleic anhydride technology is applied in the field of preparing polypropylene grafting maleic anhydride, which can solve the problems of low reactivity and achieve the effects of improving compatibilization, increasing quantity and light odor.

Inactive Publication Date: 2015-12-09
ZHEJIANG JAVA SPECIALTY CHEM CO LTD
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the system of melt-grafting PP with maleic anhydride, due t

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

Example Embodiment

[0044] Example 1

[0045] (1) Put 500 grams of PP and 500 grams of carbon five petroleum resin into the reaction kettle, evacuate, heat up to 190-230 degrees, vacuum impurity removal for 1 to 2 hours;

[0046] (2) Stop vacuuming, pass in nitrogen, add 20 grams of maleic anhydride, and stir until PP and maleic anhydride are mixed;

[0047] (3) After the temperature stabilizes at 170~190 degrees, start to add 4 grams of 2,5-dimethyl-2,5-di-tert-butylperoxide hexane and 20 grams of styrene mixture dropwise, time control 10~ 30min;

[0048] (4) After the dripping is completed, continue to pass nitrogen to react for 30-60 minutes;

[0049] (5) After the reaction is completed, keep the reaction temperature, slowly vacuumize to remove unreacted impurities, and control the time within 1~2h;

[0050] (6) After the impurity removal is completed, use nitrogen to press the material into a single screw extruder for extrusion and pelletizing to obtain the product.

Example Embodiment

[0051] Example 2

[0052] (1) Put 750 grams of PP and 250 grams of C9 petroleum resin into the reaction kettle, evacuate, heat up to 190-230 degrees, vacuum impurity removal for 1 to 2 hours;

[0053] (2) Stop vacuuming, pass in nitrogen, add 15 grams of maleic anhydride, and stir until PP and maleic anhydride are mixed;

[0054] (3) After the temperature stabilizes at 170~190 degrees, start to add 4 grams of 2,5-dimethyl-2,5-di-tert-butylperoxide hexane and 20 grams of styrene mixture dropwise, the time is controlled 10~ 30min;

[0055] (4) After the dripping is completed, continue to pass nitrogen to react for 30-60 minutes;

[0056] (5) After the reaction is completed, keep the reaction temperature, slowly vacuumize to remove unreacted impurities, and control the time within 1~2h;

[0057] (6) After the impurity removal is completed, use nitrogen to press the material into a single screw extruder for extrusion and pelletizing to obtain the product.

Example Embodiment

[0058] Example 3

[0059] (1) Add 900 grams of PP and 100 grams of carbon five petroleum resin into the reaction kettle, evacuate, heat up to 190-230 degrees, and vacuum impurity for 1-2 hours;

[0060] (2) Stop vacuuming, pass in nitrogen, add 15 grams of maleic anhydride, and stir until PP and maleic anhydride are mixed;

[0061] (3) After the temperature stabilizes at 170-190 degrees, start to add 4 grams of 2,5-dimethyl-2,5-di-tert-butylperoxide hexane and 25 grams of styrene mixture dropwise, time control 10~ 30min;

[0062] (4) After the dripping is completed, continue to pass nitrogen to react for 30-60 minutes;

[0063] (5) After the reaction is completed, keep the reaction temperature, slowly vacuumize to remove unreacted impurities, and control the time within 1~2h;

[0064] (6) After the impurity removal is completed, use nitrogen to press the material into a single screw extruder for extrusion and pelletizing to obtain the product.

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 preparation method for polypropylene grafted maleic anhydride with a high graft ratio and low odor. The method comprises the following steps: adding double-bond-containing petroleum resin with a concentration of 1% to 50% into a system, then adding an auxiliary monomer styrene and modifying a composite material of polypropylene and the petroleum resin with maleic anhydride under the action of an initiator with temperature controlled to be 170 to 230 DEG C; and removing unreacted impurities in the system through vacuumization. A compatibilizing agent with a high graft ratio and low odor can be prepared by utilizing the method in the invention. The prepared polypropylene grafted maleic anhydride compatibilizing agent can improve bonding strength between polypropylene and inorganic fillers like calcium carbonate, glass fiber and mica, thereby enhancing tensile strength, thermal deformation temperature and the like of polypropylene.

Description

Technical field: [0001] The invention relates to the technical field of polymer material processing, in particular to a method for preparing polypropylene grafted maleic anhydride with high grafting rate and low odor. Background technique: [0002] As a general-purpose plastic, polypropylene is famous for its large output, wide range of applications, and high quality and low price. However, polypropylene is non-polar and crystalline, which makes it poorly compatible with polar polymers, inorganic fillers, and reinforcing materials. When blending and compounding, it is necessary to add a compatibilizer to reduce the interfacial tension. Grafting polypropylene, introducing appropriate polar branched chains on the molecular chain, utilizing the polarity and reactivity of the branched chains, improving its performance deficiencies and adding new properties at the same time. Therefore, graft modification is a simple and effective method to expand the application of polypropylene...

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
IPC IPC(8): C08F291/00C08F289/00C08F255/02C08F222/06C08F212/08
Inventor 徐力群宋玉奎彭文平
Owner ZHEJIANG JAVA SPECIALTY CHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap