A novel high-efficiency bio-based phosphite antioxidant and preparation method thereof

A technology of ester antioxidant and base phosphorous acid, applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., can solve problems such as hazards and restrictions, and achieve high molecular weight, Excellent thermal stability and excellent oxidation resistance
CN108530485BActive Publication Date: 2020-06-02SHANDONG LINYI SUNNY WEALTH CHEM CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG LINYI SUNNY WEALTH CHEM CO LTD
Publication Date
2020-06-02

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Abstract

The invention discloses a novel efficient biology-based phosphite ester antioxidant and two preparation methods thereof. The structural formula of the antioxidant is as shown in the specification. Thepreparation methods are characterized in that cardanol is subjected to hydrogenation to obtain 3-pentadecyl-phenol, and the 3-pentadecyl-phenol, phosphorus trichloride and quaternary pentane are allowed to have esterification reaction under certain reaction conditions to obtain the biology-based phosphite ester antioxidant. The novel efficient biology-based phosphite ester antioxidant has the advantages that the antioxidant does not contain nonyl phenol and is large in molecular weight, green, environmentally friendly and safe; due to the fact that the antioxidant contains two trivalent phosphorus, each trivalent phosphorus contains three P-O bonds, and P is positively trivalent, the antioxidant can combine with instable components in polymer to generate oxide, and the antioxidant is goodin effect.
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Description

technical field

[0001] The invention relates to an antioxidant for polymer materials, in particular to a novel high-efficiency bio-based phosphite antioxidant and a preparation method thereof. Background technique

[0002] During processing and long-term use, polymers are susceptible to light and heat, oxidized by oxygen in the air, lose mechanical properties, discoloration, cracks, loss of gloss and other changes, and the appearance becomes unattractive. Antioxidants need to be added to improve the processing stability and long-term stability of the polymer. Antioxidants are such a class of chemical substances, when only a small amount exists in the polymer system, they can delay or inhibit the oxidation process of the polymer, thereby preventing the aging of the polymer and prolonging its service life, also known as "Anti-aging agent".

[0003] The types of antioxidants are: hindered phenol antioxidants, phosphite antioxidants, thio antioxidants, etc.

[0004] Phosphite...

Claims

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