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
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  • 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

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  • 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...

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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

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Application Information

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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
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