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Composite heat resisting antioxidant for polyolefin and its production process and application

An antioxidant, polyolefin technology, applied in the fields of fine chemicals and polymer materials, can solve problems such as accelerated aging

Inactive Publication Date: 2007-11-07
广东国望精细化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In order to solve the above problems, the purpose of the invention is to provide a new polyolefin high-efficiency heat-resistant oxidation composite antioxidant and its production process and application, aiming at solving the problem of rapid degradation caused by high heat encountered in the aging process of polyolefin
And solve the aging acceleration problem caused by the presence of metal ions

Method used

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  • Composite heat resisting antioxidant for polyolefin and its production process and application
  • Composite heat resisting antioxidant for polyolefin and its production process and application
  • Composite heat resisting antioxidant for polyolefin and its production process and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The component contents in the following formulations are all calculated by weight percentage.

[0052] Formula 1 of new polyolefin high-efficiency heat-resistant and oxidation-resistant compound antioxidant:

[0053] Tetra[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 60%;

[0054] Pentaerythritol bis-diphosphite bis(2,4-di-tert-butylphenyl) 20%;

[0055] 1,2-bis(2-hydroxybenzoyl) hydrazine; Disalicylic hydrazide 20%.

[0056] Formula 2 of new polyolefin high-efficiency heat-resistant and oxidation-resistant composite antioxidant:

[0057] n-octadecyl β-(4-hydroxy-3,5-di-tert-butylphenyl)propionate 40%;

[0058] Pentaerythritol bisphosphite di(stearyl alcohol) 30%;

[0059] N,N'-Diacetylthiodipropionyldihydrazine 30%.

[0060] New Polyolefin Efficient Thermal Oxidation Composite Antioxidant Formula 3:

[0061] 2,2'-methylenebis(4-methyl-6-tert-butylphenol) 30%;

[0062] Tris(2,4-di-tert-butylphenyl)phosphite 60%;

[0063] Bis(3,5...

Embodiment 2

[0073] Embodiment 2 (application in PP products)

[0074] TINUVIN783 (produced by Ciba Refined Chemical Company, referred to as 783) whose light stabilization effect is significantly lower than that of CHIMASSORB 944 (produced by Ciba Refined Chemical Company, referred to as 944) and the new polyolefin high-efficiency heat-resistant oxidation composite antioxidant AO of the present invention are used together In polypropylene, compared with the composite system of CHIMASSORB 944, TINUVIN 622 (produced by Ciba Refined Chemical Company, referred to as 622) and general antioxidant IRGANOX B-215 (produced by Ciba Refined Chemical Company, referred to as B-215), the Photo-oxidative aging properties and thermo-oxidative aging properties.

[0075] Using PP (domestic model as F1002) powder as the base resin, add 0.3% 622 / 0.15% B-215 (1 # ), 0.3% 944 / 0.15% B-215 (2 # ), 0.3%783 / 0.15AO (3 # ), and then add 0.1% calcium stearate. Put each additive and base resin in a high-speed mixer...

Embodiment 3

[0082] Embodiment 3 (at PE functional shed film)

[0083] Using 944, 783, 622 respectively with the new polyolefin high-efficiency heat-resistant oxidation composite antioxidant AO of the present invention, common composite antioxidant B-215, according to the current production formula of agricultural polyethylene functional shed film, blowing test film.

[0084] The formulations and artificial accelerated aging tests of the six test shed films are shown in Table 6 and Table 7, respectively.

[0085] 1 #

[0086] Irradiation time / hr

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Abstract

The present invention relates to composite heat resisting antioxidant for polyolefin and its production process and application. The composite heat resisting antioxidant consists of hindered phenol antioxidant 20-75 wt%, phosphate antioxidant 20-75 wt%, and chelating metal component containing at least bisamide-metal ion chelating structure 5-50 wt%, and is prepared through physical mixing and airflow crushing. The composite heat resisting antioxidant is applied in polyolefin product and can raise the ageing resisting performance of polyolefin product, especially greenhouse film, greatly.

Description

technical field [0001] The invention relates to the fields of fine chemical industry and polymer materials, in particular to a heat-resistant oxidation compound antioxidant and its production process and application Background technique [0002] Polymer materials, whether natural or synthetic, are prone to oxidation reactions. Such oxidation reactions can alter many important properties even at very low oxidative conversions of polymers. For example, if an oxidation reaction can cause chain scission in a linear polymer containing 10,000 units, then 100×10 -6 The conversion is sufficient to halve the molecular weight of the polymer. This will not only reduce some mechanical properties of the polymer such as tensile strength, and the surface will become rough, but also cause discoloration of plastic products. Oxidation reactions can occur at any point in the life cycle of polymers: during manufacturing and storage, during processing and the end-use of plastic products, espe...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08K5/524C08J5/18C08K5/13C08K5/17
Inventor 陈宇王朝晖
Owner 广东国望精细化学品有限公司
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