Polypropylene composition and polypropylene film

A polypropylene composition and polypropylene technology, applied in the field of polypropylene film, can solve the problems of poor mechanical strength, etc., and achieve the effects of increased crystallization temperature, good compatibility, and improved mechanical strength

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantage that the mechanical strength of the existing polypropylene film will becom...

Method used

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  • Polypropylene composition and polypropylene film
  • Polypropylene composition and polypropylene film
  • Polypropylene composition and polypropylene film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The present invention does not specifically limit the water content in the alcohol corresponding to the alkoxy group in the preparation process of the above-mentioned alkoxy magnesium compound. In order to make the obtained alkoxy magnesium compound have more excellent performance, moisture content is required. The less the content, the better. Generally, the water content in the alcohol corresponding to the alkoxy group needs to be controlled below 1000 ppm, preferably below 200 ppm.

[0048] According to the present invention, the inert atmosphere is known to those skilled in the art, preferably nitrogen atmosphere and / or argon atmosphere. In addition, the preparation of the magnesium alkoxide compound usually uses an inert solvent as a reaction medium. Wherein, the inert solvent can be C 6 -C 10 At least one of alkanes or aromatics, preferably at least one of hexane, heptane, octane, decane, benzene, toluene, xylene and their derivatives.

[0049] According to the...

Embodiment 1

[0119] This example is used to illustrate the polypropylene composition and polypropylene film provided by the present invention and the preparation method thereof.

[0120] (1) Preparation of polypropylene:

[0121] A. Preparation of titanium-containing solid catalyst component: After fully replacing the 16L pressure-resistant reactor with a stirrer with nitrogen, then add 10L ethanol, 300mL of 2-ethylhexanol, 11.2g iodine, 8g Magnesium chloride and 640g of magnesium powder were stirred and mixed evenly, and the system was heated to 75°C for reflux reaction while stirring, and the reaction was stopped until no hydrogen gas was discharged. The obtained reaction product was washed with 3L of ethanol, filtered, and dried to obtain dialkoxymagnesium with an average particle diameter D50 of 30.2 μm, a particle size distribution index SPAN of 0.81, and m of 0.015. Take 650g of the above dialkoxymagnesium, 3250mL of toluene, and 65mL of 2-isopropyl-2-isopentyl-1,3-dimethoxypropane ...

Embodiment 2

[0133] This example is used to illustrate the polypropylene composition and polypropylene film provided by the present invention and the preparation method thereof.

[0134] (1) Preparation of polypropylene:

[0135] A, preparation of titanium-containing solid catalyst component: (same as Example 1);

[0136] B, test device: (same as embodiment 1);

[0137] C. Test conditions:

[0138] Step (1) pre-polymerization: the reaction pressure is 2.5MPa, the reaction temperature is 10°C, and the reaction time is 12 minutes; the feeding amount of titanium-containing solid catalyst component and triethylaluminum is 0.4g / hour and 0.058mol / hour respectively Hour, the propylene feed rate is 10 kilograms / hour, obtains the propylene prepolymer that prepolymerization multiple is 100 gram polymer / gram catalyst;

[0139] Step (2) Gas-phase polymerization: The reaction temperature is 91°C, the reaction pressure is 2.3 MPa, and the reaction time is 60 minutes. The propylene prepolymer obtained...

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Abstract

The invention provides a polypropylene composition and a polypropylene film prepared from the polypropylene composition. The polypropylene composition comprises polypropylene filler and a nucleating agent; the molecular weight distribution index of the polypropylene is 2.5-5.5, and the polymer tail index PIHT in molecular weight distribution width is greater than 1.9. The mechanical strength of the polypropylene film is high.

Description

technical field [0001] The present invention relates to a polypropylene composition and a polypropylene film. Background technique [0002] Polypropylene resin has been widely used for its excellent mechanical properties, optical properties, light weight and high price. In particular, biaxially oriented polypropylene (BOPP) film can be used in many fields such as packaging, compounding, and printing due to its advantages such as soft quality, high transparency, non-toxicity, good water resistance, and high mechanical strength. [0003] In recent years, in order to improve the performance of BOPP films and broaden the uses of products, people often achieve this by filling various functional fillers into the film polypropylene matrix. For example, CN101676324A discloses a special masterbatch for biaxially stretched polypropylene film pearlescent synthetic paper, which contains 27-40% by weight of polypropylene resin, 58-70% by weight of functional filler, 0.2-0.5% by weight o...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08F110/06C08F4/649C08F4/646C08F4/654C08F4/651
CPCC08F110/06C08K3/22C08K3/26C08K5/1345C08K13/02C08K2003/2237C08K2003/265C08K2201/005C08K2201/011C08L2203/16C08L2205/24C08L2207/10C08L2314/02C08F4/6494C08F4/646C08F4/6465C08F4/6546C08F4/651C08L23/12
Inventor 高达利邹浩张师军徐萌于鲁强王良诗郭梅芳张丽英
Owner CHINA PETROLEUM & CHEM CORP
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