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Hindered phenolic compound as well as preparation method and application thereof

A technology of hindered phenols and compounds, which is applied in the field of hindered phenols compounds and their preparation, can solve the problems of high cost and complex composition, and achieve the effects of good thermal stability, good compatibility, and excellent heat-oxidative aging resistance

Pending Publication Date: 2022-03-25
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composition of this scheme is complex and the cost is high. If a new type of antioxidant can be developed to endow polypropylene with excellent heat and oxygen aging resistance, it will have important research significance and application value.

Method used

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  • Hindered phenolic compound as well as preparation method and application thereof
  • Hindered phenolic compound as well as preparation method and application thereof
  • Hindered phenolic compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This example provides a hindered phenolic compound named β-(3,5-di-tert-butyl-4-hydroxyphenyl) behenyl propionate, which is prepared through the following process:

[0054] Add to the three-neck flask according to the material molar ratio n(β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate methyl ester):n(carbon behenyl alcohol)=1.02:1, and pass After the nitrogen gas is removed and the air is completely removed, vacuumize to control the vacuum degree below -80KPa. The temperature was raised, and the reduced pressure was stopped when the temperature reached 90°C. Under the protection of nitrogen, a catalyst (2wt% β-(3,5-di-tert-butyl-4-hydroxyphenyl)) was added, and the temperature was raised to 160°C for 5 hours. After the reaction, cool down to 50°C, add 95% ethanol solution, dissolve in a water bath at a constant temperature of 50°C, slowly stir in an ice-water bath and cool down to 0-4°C, crystallize out, filter and dry to obtain the reaction product β-(3,5 - behenyl...

Embodiment 2～9

[0061] This embodiment provides a series of polypropylene materials, and the parts by weight and performance test results of each component in the formula are shown in Table 2.

[0062] The formula (part) and performance test result of the polypropylene material that table 2 embodiment 2~9 provides

[0063]

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Abstract

The invention relates to a hindered phenol compound as well as a preparation method and application thereof. The hindered phenol compound is beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid docosyl alcohol ester. The hindered phenol compound provided by the invention has better thermal stability and better compatibility, has excellent thermo-oxidative aging resistance, and can be used as an antioxidant to be added into talcum powder modified polypropylene materials and other resin materials, and the obtained polypropylene materials have excellent thermo-oxidative aging resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a hindered phenolic compound and its preparation method and application. Background technique [0002] Polypropylene (PP) is a semi-crystalline thermoplastic with high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is the most common high One of the molecular materials, it is widely used in automotive interior parts or home appliance shell products. [0003] But polypropylene contains unstable tertiary carbon groups, which form tertiary carbon free radicals in the presence of heat, light or oxygen. Tertiary carbon free radicals are very active, causing chain scission and degradation of polypropylene molecular chains, leading to the aging of PP materials. For this reason, antioxidants must be added to delay or inhibit the aging process, thereby prol...

Claims

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Application Information

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IPC IPC(8): C07C69/732C07C67/03C08L23/12C08L23/14C08L23/08C08K5/134C08K3/34
CPCC07C69/732C08L23/12C08L23/14C08L2201/08C08L23/0815C08K5/1345C08K3/34
Inventor 苏娟霞陈平绪叶南飚杨波罗忠富卢朝亮吴亦建吴国峰陈延安
Owner KINGFA SCI & TECH CO LTD
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