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Film or laminate comprising ethylene resin or ethylene resin composition

A technology of vinyl resin and resin composition, which is applied in the field of laminates, can solve the problems of difficult film bubble stability, extrusion load, etc., and achieve the effect of excellent mechanical strength, excellent sealing strength, and excellent balance of tear strength

Active Publication Date: 2011-09-07
MITSUI CHEM INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve such problems, compositions of ethylene-based polymers obtained using metallocene catalysts and high-pressure low-density polyethylene (Patent Documents 1 and 2), ethylene-based polymers produced by specific catalysts (Patent Documents 3 to 6), but it is difficult to effectively obtain vinyl resins with excellent moldability such as bubble stability in blow molding, neck-in / stretch fluctuation in T-die molding, and low extrusion load, as well as excellent mechanical strength

Method used

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  • Film or laminate comprising ethylene resin or ethylene resin composition
  • Film or laminate comprising ethylene resin or ethylene resin composition
  • Film or laminate comprising ethylene resin or ethylene resin composition

Examples

Experimental program
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Embodiment

[0206] Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited by these examples. Among the analysis methods and evaluation methods of vinyl resins used in the present invention, methods not described above are as follows.

[0207] [m1] Number average molecular weight (Mn), Z average molecular weight (Mz), ratio of weight average molecular weight to number average molecular weight (Mw / Mn), ratio of Z average molecular weight to weight average molecular weight (Mz / Mw)

[0208] Number average molecular weight (Mn), Z average molecular weight (Mz), ratio of weight average molecular weight to number average molecular weight (Mw / Mn), ratio of Z average molecular weight to weight average molecular weight (Mz / Mw), using GPC produced by Waters / V2000, measure according to the following operations. Shodex AT-G was used for the guard column, two pieces of AT-806 were used for the analytical column, the column tempe...

manufacture example 1

[0283] [Preparation of solid content (S-1)]

[0284] In a reactor with an inner volume of 260 liters, the silicon dioxide (SiO 2 : Average particle size: 12 µm) 10 kg was suspended in 90.5 liters of toluene, and then cooled to 0 to 5°C. To this suspension, 45.5 liters of a toluene solution of methylaluminoxane (3.0 mmol / ml in terms of Al atoms) was added dropwise over 30 minutes. At this time, the temperature in the system was maintained at 0 to 5°C. After continuing the reaction at 0-5°C for 30 minutes, the temperature was raised to 95-100°C in about 1.5 hours, and the reaction was continued at 95-100°C for 4 hours. Thereafter, the temperature was lowered to normal temperature, and the supernatant was removed by decantation. After washing the solid content obtained by the above operation twice with toluene, toluene was added to make the total amount 129 liters, and a toluene slurry of the solid content (S-1) was prepared. A part of the obtained solid content and a researc...

manufacture example 2

[0296] [Manufacturing example 2]~[Manufacturing example 4]

[0297] [polymerization]

[0298] In Production Example 1, except that the polymerization conditions were changed to those shown in Table 1, an ethylene-based polymer was obtained in the same manner as in Production Example 1 (see Table 1). Using the obtained ethylene-based polymer, a measurement sample was prepared in the same manner as in Production Example 1. Table 5 and Table 10 show the results of physical property measurement and extrusion lamination molding using this sample.

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PUM

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Abstract

The present invention provides a film including, in at least a part thereof, a layer comprising an ethylene-based resin, which is a copolymer of ethylene and an alpha-olefin of 4 to 10 carbon atoms, and satisfies the following requirements (1) to (5) at the same time or an ethylene-based resin composition containing the resin; (I) the melt flow rate at 190 DEG C under a load of 2.16 kg is in the range of 0.1 to 50 g / 10 min, (II) the density is in the range of 875 to 970 kg / m<3>, (III) the ratio of a melt tension at 190 DEG C to a shear viscosity at 200 DEG C and an angular velocity of 1.0 rad / sec is in the range of 1.00*10<-4> to 9.00*10<-4>, (IV) the sum of the number of methyl branches and the number of ethyl branches, each number being based on 1000 carbon atoms and measured by<13>C-NMR, is not more than 1.8, and (V) the zero shear viscosity [eta 0 (P)] at 200 DEG C and the weight-average molecular weight (Mw) as measured by a GPC-viscosity detector method (GPC-VISCO) satisfy the following relational formula (Eq-1): 0.01*10<-13>*Mw<3.4><=eta 0<=4.5*10<-13>*Mw<3.4>...(Eq-1).

Description

technical field [0001] The present invention relates to a film comprising at least a part of a layer composed of an vinyl resin or an vinyl resin composition containing the resin, and a film having a layer composed of a vinyl resin or a vinyl resin composition containing the resin and an olefin resin A laminate of layers other than the constituent layers. Background technique [0002] Vinyl resins are molded by various molding methods and used for various purposes. Depending on these molding methods and uses, the properties required of vinyl resins also vary. For example, in T-die molding, when a cast film is formed, neck-in occurs in which film ends shrink toward the center. In order to suppress neck-in to a minimum, it is necessary to select a vinyl resin having a large melt tension despite a small molecular weight as the vinyl resin. The same characteristics are required to prevent sag or breakage in blow molding, or to prevent bubble sloshing or breakage in blown film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F210/16C08F4/646C08F4/6592B32B27/32C08J5/18
Inventor 铃木雅生佐藤康雄明石崇弘田崎力松原真也坂东秀树
Owner MITSUI CHEM INC
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