Toluene diisocyanate manufacturer Knowledge [Antioxidant supply] Preparation and production process steps of antioxidant 245-Shanghai Beite Chemical Co., Ltd.

[Antioxidant supply] Preparation and production process steps of antioxidant 245-Shanghai Beite Chemical Co., Ltd.

Image keywords

It is understood that Antioxidant 245 is in the form of white powder with a melting point of 81°C. It is a hindered phenolic antioxidant, odorless, low volatility, and has good Excellent color stability and extraction resistance to prevent thermo-oxidative degradation of materials during synthesis, processing and end use.

The preparation and production process steps of antioxidant 245 are as follows:

1. Raw material preparation: The raw materials for synthetic antioxidant 245 mainly include phenol, formaldehyde, Sulfuric acid and sodium hydroxide, etc. These raw materials require careful processing and preparation to ensure purity and quality during synthesis.

2. Condensation reaction: First, add phenol and formaldehyde into the reaction kettle in a certain proportion, heat and control the reaction temperature and time to cause a condensation reaction between the two. The condensation reaction is a key step in the synthesis of antioxidant 245 and needs to be carried out under appropriate conditions to ensure the purity and yield of the product.

3. Oxidation reaction: react the product obtained by the condensation reaction with an oxidant to oxidize it into the target product antioxidant 245. The oxidation reaction needs to be carried out under appropriate temperature and pressure conditions, and the reaction must be controlled time to ensure product quality.

4. Crystallization and separation: Crystallize and filter the reaction mixture to obtain a solid product, which is then washed and dried to finally obtain a pure antioxidant 245 product.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.allhdi.com/archives/12644

author:

Previous article
Next article
Contact Us

Contact us

+86 - 152 2121 6908

Online consultation: QQ交谈

E-mail: sales@newtopchem.com

Working hours: Monday to Friday, 9:00-17:30, closed on holidays
Follow wechat
Scan wechat and follow us

Scan wechat and follow us

Back to top
Home
E-mail
Products
Search