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High Rigid Linear Low Density Polyethylene Injection Molding Resin

A linear low-density, polyethylene technology, applied in the field of polymer materials, can solve the problems of no UV aging resistance, low weather resistance and rigidity, and poor resin uniformity in the comprehensive performance of blends, etc., to achieve excellent UV resistance Effect of aging resistance, good resin uniformity

Active Publication Date: 2016-08-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyethylene provided by the invention is mixed from different components, and the resin uniformity and comprehensive performance are poor; and it does not have UV aging resistance
[0007] Since large-scale products such as waste bins, some furniture, storage tanks and road barriers are mostly used outdoors, the resin is required to have good UV aging resistance and high rigidity. At present, LLDPE injection molding special materials in the domestic market have weather resistance and rigidity Manufacturers generally use the method of blending and modifying LLDPE resin with light stabilizers and inorganic fillers to improve the anti-ultraviolet aging performance and rigidity of the resin, which improves the anti-ultraviolet aging performance and rigidity of the material to a certain extent. Rigidity, but reduces the comprehensive physical properties of the material such as fluidity and toughness. Generally, the comprehensive properties of the blend and the uniformity of the resin are poor

Method used

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  • High Rigid Linear Low Density Polyethylene Injection Molding Resin
  • High Rigid Linear Low Density Polyethylene Injection Molding Resin
  • High Rigid Linear Low Density Polyethylene Injection Molding Resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-rigidity linear low-density polyethylene injection molding resin is prepared from the following materials in parts by weight:

[0037] Linear Low Density Polyethylene 100 parts

[0038] Light stabilizer 944 0.1 parts

[0039] Light stabilizer 119 0.1 parts

[0040] Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate 0.05 parts

[0041] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.10 parts

[0042] Zinc stearate 0.08 parts

[0043] 0.10 parts of oleic acid amide;

[0044] After the above materials are mixed, the high rigidity linear low density polyethylene injection molding resin is obtained after granulation and packaging.

[0045]The above linear low density polyethylene is prepared by the following method: using ethylene as raw material, 1-butene as comonomer, hydrogen as chain transfer agent, SLC-S catalyst, diethylaluminum chloride and tri-n-hexylaluminum As a cocatalyst, it is polymerized by Unipol gas phase process...

Embodiment 2

[0049] A high-rigidity linear low-density polyethylene injection molding resin is prepared from the following materials in parts by weight:

[0050] Linear Low Density Polyethylene 100 parts

[0051] Poly[1-(2'-hydroxyethyl)-2.2.6.6-tetramethyl-4-hydroxypiperidine succinate] 0.2 parts

[0052] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.05 parts

[0053] Tris(2,4-di-tert-butylphenyl)phosphite 0.1 part

[0054] Hydrotalcite 0.02 part

[0055] Erucamide 0.10 parts;

[0056] After the above materials are mixed, the high rigidity linear low density polyethylene injection molding resin is obtained after granulation and packaging.

[0057] The above linear low density polyethylene is prepared by the following method: using ethylene as raw material, 1-butene as comonomer, hydrogen as chain transfer agent, SLC-S catalyst, diethylaluminum chloride and tri-n-hexylaluminum As a cocatalyst, it is polymerized by the Unipol gas phase process; th...

Embodiment 3

[0061] A high-rigidity linear low-density polyethylene injection molding resin is prepared from the following materials in parts by weight:

[0062] Linear Low Density Polyethylene 100 parts

[0063] Light stabilizer 944 0.15 parts

[0064] 1,3,5,tris(3,5-di-tert-butyl,4-hydroxybenzyl)-s-triazine-2,4,6-(1H,3H,5H)trione 0.10 parts

[0065] Tris(2,4-di-tert-butylphenyl)phosphite 0.05 part

[0066] Zinc stearate 0.1 parts

[0067] 0.08 part of polyvinylidene fluoride resin;

[0068] After the above materials are mixed, the high rigidity linear low density polyethylene injection molding resin is obtained after granulation and packaging.

[0069] The above linear low density polyethylene is prepared by the following method: using ethylene as raw material, 1-butene as comonomer, hydrogen as chain transfer agent, SLC-S catalyst, diethylaluminum chloride and tri-n-hexylaluminum As a cocatalyst, it is polymerized by the Unipol gas phase process; the process parameters and the amou...

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Abstract

The invention relates to a high-rigid linear low-density polyethylene injection moulding resin which is prepared from following substances including, by weight, 100 parts of linear low-density polyethylene, 0.15-0.3 parts of a photo-stabilizing agent, 0.05-0.15 parts of an anti-oxygen agent, 0.02-0.10 parts of a halogen absorbing agent, and 0.05-0.10 parts of a rheology modifier. The linear low-density polyethylene is prepared from a following method comprising a step of polymerization through a Unipol gas-phase technology with ethylene as a raw material, 1-butylene as a co-polymer monomer, hydrogen as a chain transfer agent, SLC-S as a catalyst and diethylaluminium chloride and tri-n-hexylaluminium as co-catalysts. The high-rigid linear low-density polyethylene injection moulding resin is good in resin uniformity, rigid-flexible balanced performance and processability, has an excellent anti-ultraviolet light aging property and is mainly used in injection moulding of outdoor products.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-rigidity linear low-density polyethylene injection molding resin. Background technique [0002] Injection molding is one of the largest molding applications of LLDPE (Linear Low Density Polyethylene), LLDPE injection molding resin has superior toughness and low temperature impact strength, and is commonly used in the production of waste bins, household appliances, toys, refrigerators, lids for various containers It can also be used as bulky products such as storage tanks and road barriers; in addition, it can also be used for shirt adhesive interlining, carpet underlayment, metal coating, blending modification, etc. [0003] Patents CN100420711C, CN1976957B, CN101283036, CN102197081A, CN101048456B provide injection molding polyethylene blends and compositions. But none of these patents relates to high rigidity LLDPE injection molding resins for outdo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/00C08K13/02C08L27/18C08L27/16C08L27/20C08F210/02
CPCC08F210/02C08K2201/014C08L23/0815C08L2201/08C08L2205/03C08L2205/035C08L79/04C08K5/00C08K5/34926C08K5/3435C08K5/1345C08K5/098C08K5/20C08F210/08C08K13/02C08K5/526C08K3/34C08L27/16C08K5/3492C08K5/132C08K5/3475C08L27/18
Inventor 陈枫徐振明傅勇杜雪娟许秋康梅利胡庆云笪文忠
Owner CHINA PETROLEUM & CHEM CORP
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