Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation process of polypropylene resin special for thin-wall injection molding, prepared resin and application

A polypropylene resin and preparation process technology, applied in the field of polypropylene resin, can solve the problems of unsatisfactory impact resistance, aging resistance and transparency, too many transition materials, etc., to expand the scope of product application, good transparency, Use effects that have a long storage time

Active Publication Date: 2022-04-15
WANHUA CHEM GRP CO LTD
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems in the prior art that there are too many transition materials in the process of producing polypropylene resin for thin-wall injection molding, and the impact resistance, aging resistance and transparency of the product are not ideal, the present invention proposes a preparation of a special polypropylene resin for thin-wall injection molding Process, resin produced and application

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
  • Preparation process of polypropylene resin special for thin-wall injection molding, prepared resin and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The preparation method of vinyl chloride butenyl glycine copolymer M1 is as follows:

[0059] Spray the anti-sticking agent into the 5L reactor, and vacuumize the reactor three times until the pressure of the reactor is -0.7MPa. Add 2000g vinyl chloride monomer, 2000g R-4-butenyl glycine, 2040g deionized water, 12g alcoholysis degree 88% polyvinyl alcohol, 15g alcoholysis degree 72% polyvinyl alcohol, 1g alcoholysis degree 55% polyvinyl alcohol, 0.5g cumyl peroxyneodecanoate, 1g tert-butyl peroxydecanoate, the temperature of the reactor was raised to 56.8° C., and the polymerization reaction was started. Observe the pressure drop of the system during the reaction. After 2.5 hours of reaction, add 20ml of defoamer P875567 (polyether modified silicone oil, purchased from Shanghai McLean Biochemical Technology Co., Ltd.). When the system pressure drop reaches 0.15MPa(G), add 1g to stop the compounding (antioxidant 1076:antioxidant 245=1:1), the reactor pressure was releas...

Embodiment 2

[0061] The preparation method of vinyl chloride butenyl glycine copolymer M2 is as follows:

[0062] Spray anti-sticking agent into the 5L reactor, vacuumize the reactor three times until the pressure of the reactor is -0.7MPa, add 2000g vinyl chloride monomer, 1800g R-4-butenylglycine, 2040g Deionized water, 10g alcoholysis degree 88% polyvinyl alcohol, 10g alcoholysis degree 72% polyvinyl alcohol, 1g alcoholysis degree 55% polyvinyl alcohol, 0.5g cumyl peroxyneodecanoate, 2g decyl peroxide Acetate tert-butyl ester, the temperature of the reactor was raised to 56.8°C, and the polymerization reaction was started. Observe the pressure drop of the system during the reaction. After 2.5 hours of reaction, add 20ml of defoamer P875567 (polyether modified silicone oil, purchased from Shanghai Macklin Biochemical Technology Co., Ltd.). When the system pressure drop reaches 0.18MPa(G), add 1g to stop the compounding (antioxidant 1076:antioxidant 245=1:1), the pressure of the reactor ...

Embodiment 3

[0064] The preparation method of vinyl chloride butenyl glycine copolymer M3 is as follows:

[0065] Spray anti-sticking agent into the 5L reactor, vacuumize the reactor three times until the pressure of the reactor is -0.7MPa, add 2000g vinyl chloride monomer, 2500g R-4-butenylglycine, 2040g Deionized water, 15g alcoholysis degree 88% polyvinyl alcohol, 20g alcoholysis degree 72% polyvinyl alcohol, 1g alcoholysis degree 55% polyvinyl alcohol, 0.5g cumyl peroxyneodecanoate, 1g decyl peroxide Acetate tert-butyl ester, the temperature of the reactor was raised to 56.8°C, and the polymerization reaction was started. Observe the pressure drop of the system during the reaction. After 2.5 hours of reaction, add 20ml of defoamer P875567 (polyether modified silicone oil, purchased from Shanghai McLean Biochemical Technology Co., Ltd.). When the system pressure drop reaches 0.2MPa(G), add 1g to stop the compounding (antioxidant 1076:antioxidant 245=1:1), the pressure of the reactor wa...

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
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation process of polypropylene resin special for thin-wall injection molding, the prepared resin and application. According to the polypropylene resin preparation process, a three-reactor form is adopted, the first reactor is a stirred tank reactor, the hydrogen regulation performance of a catalyst is improved, the high melt index requirement is rapidly met in a first stirred tank, then the product sequentially enters a second reactor loop reactor and a third reactor gas phase fluidized bed reactor, and a three-step synthesis hydrogen regulation method is adopted in total; by adjusting the proportion of propylene, hydrogen and ethylene in the second reactor and the third reactor, the purpose of preparing the low-melt-index polypropylene powder is achieved, and the prepared polypropylene material product is wide in molecular weight distribution, stable in quality and good in fluidity and rigidity-toughness balance. The transparent nucleating agent, the dendritic dispersing type toughening agent, the vinyl chloride butenyl glycine copolymer, the antioxidant, the acid acceptor and the polypropylene powder are synergistically blended, so that the polypropylene resin with excellent comprehensive properties such as aging resistance, flame retardance and transparency is prepared.

Description

technical field [0001] The invention relates to a polypropylene resin, in particular to a preparation process of a special polypropylene resin for thin-wall injection molding, the obtained resin and its application. Background technique [0002] As one of the five general-purpose plastics, polypropylene has excellent mechanical properties, chemical corrosion resistance, low density, non-toxic and harmless, and is widely used in many production and living fields, such as automotive applications, packaging applications, household goods applications, storage applications, etc. In recent years, in the production of packaging products such as food preservation boxes and medicine boxes, and thin-wall containers such as storage boxes and lockers, the demand for polypropylene special materials for rapid thin-wall injection molding has been increasing. In terms of processing and molding technology and performance of thin-walled packaging container products, general-purpose polypropy...

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): C08F210/16C08F210/06C08F4/646C08F4/649C08L23/14C08L27/06C08K5/098C08K5/00
CPCC08F210/06C08F210/16C08L23/14C08L2205/24C08F210/02C08F4/6465C08F4/6494C08L27/06C08K5/098C08K5/0083
Inventor 喻啸晨李胜龙齐旺顺高晴晴徐彦龙张建新朱文俊李允升蓝程程严凯龙马帅张宏科
Owner WANHUA CHEM GRP CO LTD