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

PROPYLENE-ETHYLENE-alpha-OLEFIN COPOLYMER, PROPYLENE POLYMER COMPOSITION AND USE THEREFOR

An olefin copolymer and polymer technology, applied in coatings, adhesives, etc., can solve the problems of insufficient performance of propylene-based polymers, exudation of propylene-based polymer components, deterioration of surface characteristics of molded bodies, etc., and achieve appearance retention. Excellent effect, excellent tack resistance, excellent whitening resistance

Pending Publication Date: 2021-12-21
MITSUI CHEM INC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the use of propylene-based polymer compositions containing such propylene-based polymers is expanding, but the performance of the currently used propylene-based polymers is not sufficient, and propylene-based polymer components with low molecular weight and low crystallinity are generated at high temperatures. Bleeding, elution into oil, etc., and become a major factor in the deterioration of the surface properties of the molded article at high temperature, the deterioration of heat resistance, etc.
[0004] Patent Document 1 describes that when a film (sheet) formed of a propylene-based resin composition is exposed to 60°C, the appearance changes due to exudation of low-molecular-weight components, etc.

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
  • PROPYLENE-ETHYLENE-alpha-OLEFIN COPOLYMER, PROPYLENE POLYMER COMPOSITION AND USE THEREFOR
  • PROPYLENE-ETHYLENE-alpha-OLEFIN COPOLYMER, PROPYLENE POLYMER COMPOSITION AND USE THEREFOR
  • PROPYLENE-ETHYLENE-alpha-OLEFIN COPOLYMER, PROPYLENE POLYMER COMPOSITION AND USE THEREFOR

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0181]

[0182] This composition can be mixed by various known methods, such as Henschel mixer, V-blender, ribbon mixer, drum mixer, kneading extruder, etc. method, or use a single-screw extruder, twin-screw extruder, kneader, Banbury mixer, etc. to melt and knead, thereby preparing. Moreover, granulation, pulverization, etc. may be performed as needed.

[0183] When performing the aforementioned mixing and kneading, each component to be blended may be added at one time or may be added in stages.

[0184] "Pellets"

[0185] The pellet according to one embodiment of the present invention contains the aforementioned copolymer (A) or the aforementioned present composition.

[0186] The shape, size, etc. of the pellets are not particularly limited, and can be appropriately selected according to the intended use.

[0187] The pellets can be produced by melting and granulating the above-mentioned copolymer (A) with a mixer such as a Banbury mixer, a roll, or an extruder. The i...

Embodiment

[0212] Hereinafter, the present invention will be described using examples, but the present invention is not limited to these examples.

[0213]

[0214] Propylene·ethylene·α-olefin copolymer (A):

[0215] Propylene·ethylene·α-olefin copolymers (A-1) to (A-5) obtained in the production examples described later were used.

[0216] Propylene-ethylene copolymer (PER):

[0217] Propylene / ethylene copolymers (PER-1) to (PER-3) obtained in Production Examples described later were used.

[0218] ・Propylene polymer (B):

[0219] (B-1); homopolypropylene ((Prime Polymer Co., Ltd., Prime Polypro F107, MFR (230°C, 2.16kg load) = 7g / 10min, melting point = 163°C, mmmm fraction = 96% )

[0220] (B-2); Atactic polypropylene ((Prime Polymer Co., Ltd., Prime Polypro F227, ethylene content = 3.0 mol%, MFR (230° C., 2.16 kg load) = 7 g / 10 minutes, melting point = 150 ℃, mmmm fraction = 96%)

[0221] (B-3); homopolypropylene ((Prime Polymer Co., Ltd., Prime Polypro J106, MFR (230°C, 2.16k...

manufacture example

[0228] As a catalyst for polymerization, diphenylmethylene (3-tert-butyl-5-ethylcyclopentadienyl) (2,7-di tert-Butylfluorenyl) zirconium dichloride, as a cocatalyst, using methylaluminoxane (manufactured by Tosoh Finechem Corporation, 0.3 mmol in terms of aluminum), using continuous polymerization equipment, ethylene used as a raw material in a hexane solution , propylene and 1-butene were polymerized to obtain six kinds of propylene·ethylene·α-olefin copolymers (A-1) to (A-5).

[0229] The physical property values ​​of the obtained copolymers (A-1) to (A-5) were measured by the following methods. The results are shown in Table 1.

[0230] [Production example of propylene-ethylene copolymer (PER)]

[0231] Propylene-ethylene copolymers (PER-1) to (PER-3) were obtained in the same manner as in the production example of the aforementioned copolymer (A) except that the raw materials were changed to ethylene and propylene.

[0232] The physical property values ​​of the obtained...

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
enthalpy of fusionaaaaaaaaaa
enthalpy of fusionaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

One embodiment of the present invention pertains to a propylene-ethylene-alpha-olefin copolymer, a propylene polymer composition, an adhesive resin composition, a pellet, a molded article, a non-oriented film, a sheet, an injection molded article, a blow-molded article or a vehicle component. Said copolymer satisfies requirements (I)-(V): (I) the content of a propylene-derived constituent unit (i) is 50-92 mol%, the content of an ethylene-derived constituent unit (ii) is 5-20 mol% and the content of a C4-20 alpha-olefin-derived constituent unit (iii) is 3-30 mol% (the total of constituent units (i)-(iii) is 100 mol%); (II) the mm fraction calculated according to 13C-NMR is 85% or higher; (III) 0.9<=MOE / (2MO*ME)<=1.5 (wherein MOE is the mole fraction relative to all dyads of the total of the propylene-ethylene chains and the C4-20 alpha-olefin-ethylene chains, MO is the total of the mole fractions of the propylene and the C4-20 alpha-olefin, and ME is the mole fraction of the ethylene); (IV) the MFR is 1-3g / 10 minutes; (V) the melting point measured according to DSC is less than 100 DEG C or no melting peak is observed.

Description

technical field [0001] One embodiment of the present invention relates to a propylene·ethylene·α-olefin copolymer, a propylene polymer composition, an adhesive resin composition, a pellet, a molded product, an unstretched film, a sheet, an injection molded product, a blown Molded moldings or automotive parts. Background technique [0002] In recent years, propylene-based polymers containing propylene as a main component have been known as soft materials made of polyolefins that are excellent in flexibility, heat resistance, and transparency, and are environmentally compatible and hygienic. [0003] At present, the use of propylene-based polymer compositions containing such propylene-based polymers is expanding, but the performance of the currently used propylene-based polymers is not sufficient, and propylene-based polymer components with low molecular weight and low crystallinity are generated at high temperatures. The problem of oozing and elution into oil and the like is...

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): C08F210/06C08L23/08C08L23/12C08L23/14
CPCC08F210/06C08L23/14C08L23/0815C09J123/14C09J123/12C09J123/0815C08L2205/025C08L2205/03C08L2203/16C08F4/65927C08F4/65912C08L23/12C08L23/08C08F210/16C08F2500/27C08F2500/15C08F2500/03C08F2500/12C08F2500/34C08F210/08C08F2500/36C08L23/142C09D123/142
Inventor 水间贵大奥达也神谷希美野田公宪中村哲也江川真甲斐祐贵保谷裕
Owner MITSUI CHEM INC
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