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Surface protection film and propylene copolymer composition for surface protection film

A surface protection film, propylene copolymer technology, used in film/sheet adhesives, synthetic resin layered products, layered products, etc. problems such as low force, and achieve the effect of sufficient transparency, excellent anti-blocking, and excellent pull-out

Active Publication Date: 2017-03-01
PRIME POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the method of this publication, although it can be applied to parts of some applications, the adhesive force is low and the transparency is not sufficient, so the application of the adherend is limited.

Method used

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  • Surface protection film and propylene copolymer composition for surface protection film
  • Surface protection film and propylene copolymer composition for surface protection film
  • Surface protection film and propylene copolymer composition for surface protection film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0084] In the preparation of the solid catalyst component (A1), any electron donating compound (c) can be used as needed. These electron donating compounds (c) are usually organic compounds containing oxygen, nitrogen, phosphorus or sulfur, for example, amines, amides, ketones, nitriles, phosphines, esters, ethers, and thioethers can be cited , Alcohols, thioesters, acid anhydrides, acid halides, aldehydes, organic acids, organic silicon compounds with Si-OC bonds.

[0085] Specifically, for example, aromatic phthalate diesters such as diethyl phthalate, dibutyl phthalate, diisobutyl phthalate, and dihexyl phthalate can be preferably exemplified , Dimethyldimethoxysilane, diethyldiethoxysilane, diphenyldimethoxysilane, cyclohexylmethyldimethoxysilane, di-tert-butyldimethoxysilane, diiso Organosilicon compounds such as butyldimethoxysilane, diisopropyldimethoxysilane, dicyclohexyldimethoxysilane, and dicyclopentyldimethoxysilane.

[0086] As a preparation method of the solid catal...

Embodiment

[0166] Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited by these examples.

[0167] The measuring methods of physical properties in the examples and comparative examples are as follows.

[0168] (1) MFR (melt flow rate)

[0169] MFR is measured in accordance with ASTM D1238 (230°C or 190°C, load 2.16 kg).

[0170] (2) Room temperature n-decane soluble part (D sol )

[0171] 200 ml of n-decane was added to 5 g of a sample of the final product (that is, the propylene-based random block polymer of the present invention), and the mixture was heated at 145°C for 30 minutes to dissolve. It takes about 3 hours to cool down to 20°C and let stand for 30 minutes. After that, the precipitate (hereinafter referred to as the n-decane insoluble part: D insol ). The filtrate was added to approximately 3 times the amount of acetone, and the components dissolved in n-decane were separated out (precipitate (A)). The pr...

manufacture example 1

[0192] [Production Example 1] (Production of propylene-ethylene block copolymer)

[0193] (1) Preparation of magnesium compounds

[0194] The reaction tank with a stirrer (inner volume of 500 liters) is fully replaced with nitrogen, 97.2 kg of ethanol, 640 g of iodine and 6.4 kg of magnesium metal are added, and the reaction is carried out under reflux conditions while stirring until there is no more hydrogen in the system, and a solid is obtained. Shape reaction product. The reaction liquid containing the solid reaction product is dried under reduced pressure to obtain the target magnesium compound (support for the solid catalyst).

[0195] (2) Preparation of solid catalyst components

[0196] Into a reaction tank with a stirrer (inner volume 500 liters) fully replaced with nitrogen, 30 kg of the above-mentioned magnesium compound (not crushed), 95 liters of purified heptane (n-heptane), 4.4 liters of silicon tetrachloride and o-benzene were added 6.0 liters of di-n-butyl dicarboxy...

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Abstract

The present invention provides a propylene copolymer containing 75 wt% to 97 wt% of a specific propylene-ethylene block copolymer (A) and 3 wt% to 25 wt% of a specific ethylene-based elastomer (B). A film composed of the composition (where the total of (A) and (B) is 100% by weight) is a surface protection film as a surface layer, and the above-mentioned propylene copolymer composition suitable for producing the surface protection film. According to the present invention, it is possible to provide a surface protection film having a surface layer that has less damage to an adherend due to fewer fish eyes, has sufficient transparency, has excellent functionality as a surface protection film, and can be used without using a release film. Furthermore, it is also excellent in blocking resistance when it is wound up into a roll and stored, and it is excellent in the pull-out property at the time of use of a roll film.

Description

Technical field [0001] The present invention relates to a surface protective film and a propylene copolymer composition for surface protective film. Specifically, the present invention relates to a propylene copolymer composition suitable for production of a surface layer of a surface protective film and a surface protective film composed of the composition. Background technique [0002] The surface protection film is usually a laminated film having a surface layer on one side and an adhesive layer on the other side, and the adhesive layer is attached to an adherend for use. The surface protection film has applications such as building materials and optical parts. For example, various optical films (for example, diffusion films, polarizing films, retardation films, etc.) incorporated in liquid crystal displays and plasma displays may be stored with surface protection films attached to them. In addition, if it is a transparent surface protection film, it may be attached to the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/00B32B27/32C09J7/02
CPCB32B27/32C08L53/00C09J7/243C09J2423/166C08L23/08
Inventor 木村笃太郎尾留川淳藤井澄明
Owner PRIME POLYMER CO LTD
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