High-strength linear low density polyethylene film resin and preparation method thereof

A linear low density, polyethylene film technology, applied in the field of polyethylene film resin, can solve the problems of high import price and high production cost, and achieve the effects of excellent anti-aging performance, low production cost and low melt index

Active Publication Date: 2014-02-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comonomer and molecular weight in the resin are the main factors affecting the strength of the film. LLDPE produced with hexene and octene as comonomers has better performance, but there is no large-scale production of hexene and octene in China at present. And the import price is more expensive, the production cost is too high

Method used

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  • High-strength linear low density polyethylene film resin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Base resin preparation

[0023] Materials for the production of ethylene butene copolymers are the following substances:

[0024] project purity% Water content 10 -6 CO content10 -6 o 2 content index ≥99.9 ≤1 ≤1 ≤1

[0025] 2) Catalyst: The amount of titanium-based catalyst added is 2.5kg / h, and the titanium-based catalyst commonly used in the industry is currently used;

[0026] project purity% Water content 10 -6 CO content10 -6 CH 3 OH content 10 -6 index ≥99.0 ≤100 ≤10 ≤10

[0027] project purity% Water content 10 -6 CO + CO 2 Content 10 -6 o 2 Content 10 -6 index ≥95.0 ≤5 ≤5 ≤10

[0028] The preparation method of ethylene butene copolymer:

[0029] The raw materials ethylene, 1-butene and hydrogen are respectively introduced into the gas-phase fluidized bed reactor, and the contents of 1-butene and hydrogen in the reaction vessel are adjusted, and a ti...

Embodiment 2

[0037] 1. Base resin preparation:

[0038] Raw materials for the production of ethylene butene copolymer:

[0039] project purity% Water content 10 -6 CO content10 -6 o 2 content index ≥99.9 ≤1 ≤1 ≤1

[0040] 2) Catalyst: The amount of titanium-based catalyst added is 2.8kg / h, and titanium-based catalysts commonly used in the industry are used.

[0041] project purity% Water content 10 -6 CO content10 -6 CH 3 OH content 10 -6 index ≥99.0 ≤100 ≤10 ≤10

[0042] project purity% Water content 10 -6 CO + CO 2 Content 10 -6 o 2 Content 10 -6 index ≥95.0 ≤5 ≤5 ≤10

[0043] The preparation method of ethylene butene copolymer:

[0044] The raw materials ethylene, 1-butene and hydrogen are respectively introduced into the gas-phase fluidized bed reactor, and the contents of 1-butene and hydrogen in the reaction vessel are adjusted, and a titanium-based dry powder catalyst is ad...

Embodiment 3

[0052] 1. Base Resin Preparation

[0053] Raw materials for the production of ethylene butene copolymerized polyethylene base resin:

[0054] project purity% Water content 10 -6 CO content10 -6 o 2 content index ≥99.9 ≤1 ≤1 ≤1

[0055] 2) Catalyst: The amount of titanium-based catalyst added is 2.8kg / h, and titanium-based catalysts commonly used in the industry are used.

[0056] project purity% Water content 10 -6 CO content10 -6 CH 3 OH content 10 -6 index ≥99.0 ≤100 ≤10 ≤10

[0057] project purity% Water content 10 -6 CO + CO 2 Content 10 -6 o 2 Content 10 -6 index ≥95.0 ≤5 ≤5 ≤10

[0058] The preparation method of ethylene butene copolymer:

[0059] The raw materials ethylene, 1-butene and hydrogen are respectively introduced into the gas-phase fluidized bed reactor, and the contents of 1-butene and hydrogen in the reaction vessel are adjusted, and a titanium-base...

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Abstract

The invention discloses a high-strength linear low density polyethylene film resin which is mainly prepared from the following raw materials in parts by weight: 99.7-99.85 parts of base resin, 0.02-0.06 part of antioxidant, 0.04-0.09 part of auxiliary antioxidant, 0.03-0.08 part of heat stabilizer and 0.03-0.08 part of antistatic agent. The invention also discloses a preparation method of the high-strength linear low density polyethylene film resin. The high-strength linear low density polyethylene film resin has the advantages of low melt index, high molecular weight and high strength, and is suitable for blowing repackaging films and agricultural films; and the product has the advantages of outstanding puncture resistance, excellent impact strength, excellent tearing strength and excellent aging resistance.

Description

technical field [0001] The invention relates to a polyethylene film resin, in particular to a high-strength linear low-density polyethylene film resin, and also relates to a preparation method of the linear low-density polyethylene film resin. Background technique [0002] Linear low density polyethylene (LLDPE for short) is non-toxic, tasteless, odorless milky white particles with a density of 0.918-0.935g / cm 3 . Compared with LDPE, it has the advantages of high strength, good toughness, high rigidity, good heat resistance and cold resistance, and also has good environmental stress cracking resistance, puncture resistance, impact resistance, tear resistance and other properties. , and acid, alkali, organic solvents, etc., widely used in the production of agricultural film, packaging film, composite film, pipe, hollow container, injection molded parts, cable insulation layer, etc. [0003] In the packaging film and agricultural film application of linear polyethylene resin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08F210/16B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08F210/16C08J5/18C08J2323/08C08K5/00C08K5/098C08K5/1345C08K5/17C08K5/526C08K2201/017C08L2203/16C08L23/0815C08F210/08C08F2500/08C08F2500/26
Inventor 苏肖群蔡伟梁戈庆增利梁胜彪莫益燕岑静芸马宇罡
Owner CHINA PETROLEUM & CHEM CORP
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