Prepn process of 2,2'-methylene bis (4-methyl-6-tert-butyl phenol)

A technology of tert-butylphenol and methylene bis, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problem of strong corrosiveness, increase the post-processing process and preparation cost, and does not involve the stability of resin catalysts. Sexual issues etc.
CN1506345AInactive Publication Date: 2004-06-23CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2004-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to the preparation process of 2,2'-mehtylene bis(4-methyl-6-tert-butyl phenol). The present invention adopts macroporous strong acid cationic exchange resin, zeolite with SiO2 / Al2O3 molar ratio of 15-100, or heteropolyacid or other solid acid as catalyst; and formal and 2-tert-butyl-4-cresol as material, with the catalyst amount being 10-80 wt% of 2-tert-butyl-4-cresol. The reaction is performed at the temperature of 40-100 deg.c for 1-5 hr, and the reaction resultant is filtered, distilled and refined to obtain the product. The process of the present invention has the features of simple post-reaction treatment, high product yield, high product quality, no corrosion to the apparatus and high catalyst stability.
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Description

technical field

[0001] The invention relates to a method for preparing 2,2'-methylene bis(4-methyl-6-tert-butylphenol). Background technique

[0002] 2,2'-Methylene bis (4-methyl-6-tert-butylphenol), the trade name is antioxidant 2246, the English name is: 2,2'-Methylenebis (4-methyl-6-tert- Butylphenol), molecular formula is: C 23 h 32 o 2 , is a general-purpose powerful bisphenol antioxidant. Antioxidant 2246 is a good non-polluting antioxidant, which has excellent inhibitory effects on aging caused by oxygen and heat and cracks caused by sunlight, and has high thermal stability, good anti-oxidation effect, and no pollution , no coloring, no frosting, good oil solubility, no volatilization loss, no effect on rubber vulcanization and plasticity, no destabilizing effect on latex, widely used in natural and various synthetic rubber, resin, polyethylene (PE) , polypropylene (PP), polyoxymethylene, chlorinated polyether, polyurethane and oth...

Claims

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