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

A kind of polypropylene composition and its preparation method and polymer film

A polypropylene composition and polymer film technology, which is applied in the field of propylene polymers, can solve the problems of low soluble content, excellent heat-sealing performance and mechanical performance cannot be achieved at the same time, etc., and achieves high specular gloss and high transparency. The effect of low temperature and heat sealing temperature

Active Publication Date: 2021-03-23
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects in the prior art that the content of soluble matter is low and the excellent heat-sealing properties and mechanical properties cannot be realized at the same time, the invention provides a polypropylene composition and its preparation method and polymer film. Good film transparency, high rigidity, low soluble content, low heat sealing temperature

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 polypropylene composition and its preparation method and polymer film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The present invention also provides a method for the preparation of a polypropylene composition, wherein the method comprises mixing a random copolymer and an optional coalescent, wherein by, in the presence of a Ziegler-Natta catalyst, polymerizing propylene, 1-butene and optionally ethylene to obtain the random copolymer;

[0029] When the total weight of propylene, 1-butene and ethylene is 100% by weight, the amount of 1-butene is 10-20% by weight, the amount of propylene is 80-90% by weight, and the amount of ethylene is 0-5% by weight .

[0030] According to the present invention, the amount of the Ziegler-Natta catalyst can be selected according to the total amount of monomers, for example, when the total weight of the propylene, 1-butene and ethylene is 100% by weight, the The Geller-Natta catalyst may be used in an amount of 0.01-0.05% by weight, preferably 0.02-0.03% by weight. In addition, the type of the Ziegler-Natta catalyst can be a conventional choice i...

Embodiment 1

[0055] This example is used to illustrate the polypropylene composition and its preparation method and polymer film provided by the present invention

[0056] (1) Preparation of polypropylene composition

[0057] The catalyst solid component purchased from Beijing Aoda Petrochemical Co., Ltd. was continuously added to 50m at a rate of 0.61g / h 3 In the continuous horizontal stirred-bed gas phase reactor, triethylaluminum was continuously added with a pump in an amount such that the molar ratio of aluminum in triethylaluminum to titanium in the catalyst solid component was Al / Ti=30. Subsequently, propylene, 1-butene and hydrogen were passed into the reactor to carry out the polymerization reaction, wherein the pressure in the reactor was 1.4 MPa, the temperature in the reactor was 65°C, and the pressure in the reactor was 1.4 MPa. Hydrogen / propylene weight ratio (H 2 / C 3 ) was 0.018, based on the total amount of propylene and 1-butene, the content of propylene was 88.0% by w...

Embodiment 2

[0063] This embodiment is used to illustrate the polypropylene composition provided by the invention and its preparation method and polymer film

[0064] Adopt the same method as Example 1 to prepare propylene polymer, the difference is that in step (1), based on the total amount of propylene and 1-butene, the content of propylene is 85% by weight, and the content of 1-butene The content is 15% by weight. During extrusion granulation, 0.1 gram of Antioxidant 1010, 0.1 gram of Antioxidant 168 and 0.03 gram of hydrotalcite were added.

[0065] The composition and properties of the obtained polypropylene compositions are listed in Table 1. The initial heat-sealing temperature, haze, light transmittance and specular gloss of the prepared polymer films are listed in Table 2.

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 relates to the field of a propylene polymer and discloses a polypropylene composition and a preparation method thereof, and a polymer film. The polypropylene composition comprises a random copolymer; in the random copolymer, the content of a structure unit from 1-butene is 10 to 20 percent by weight, the content of a structure unit from propylene is 80 to 90 percent by weight and thecontent of a structure unit from ethylene is 0 to 5 percent by weight when the total weight of the random copolymer is 100 percent by weight. In the polypropylene composition provided by the invention, the content of an N-hexane soluble substance is low; and the polymer film prepared by using the polypropylene composition has low initial heat sealing temperature, low haze, high light transmittance and high specular glossiness.

Description

technical field [0001] The invention relates to the field of propylene polymers, in particular to a polypropylene composition, a preparation method thereof, a polypropylene composition and a polymer film prepared by the method. Background technique [0002] Usually, the polypropylene material with better transparency is a homopolymer of propylene, a random copolymer of propylene and ethylene or a random copolymer of propylene and 1-butene, especially a random copolymer of propylene and ethylene and a random copolymer of propylene and 1-butene. Random copolymers of butene, due to the excellent optical properties, mechanical properties and packaging adaptability of polypropylene films, are currently widely used in food packaging containers and other fields. Polypropylene film can be prepared by unidirectional or biaxial stretching film processing technology. Regardless of whether it is used in the preparation process or as a package, the film should not contain too much solub...

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): C08L23/14C08F210/06C08F210/08C08F210/02
CPCC08F210/06C08J5/18C08J2323/14C08L23/14C08L2201/10C08L2203/162C08F210/08C08F210/02
Inventor 赵唤群钱鑫王素玉李国谷汉进陈锟张丁刘海成
Owner CHINA PETROLEUM & CHEM CORP
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