A kind of bisphenol A synthetic resin catalyst and preparation method thereof

Abstract

The invention provides a bisphenol A synthetic resin catalyst and a preparation method thereof. It is a media with a pore size of 1-20 nm obtained by copolymerizing a third monomer with an unsaturated double bond and introducing a cross-linking degree of 2 to 8%. Porous white balls are used as the matrix, and then a mild sulfonation process is used for sulfonation. Finally, the resin is modified to obtain a high-strength strong acid mesoporous cationic resin catalyst with a pore size of 2-10nm. The mesopores on the catalyst in the present invention reduce the pressure difference between the material and the catalyst; the mesopores are conducive to the generation of bisphenol A and have less by-products; after the third monomer diallyl bisphenol A is added to the catalyst during polymerization, the inside of the resin The cross-linked structure is more stable, the compressive strength is increased, the affinity of the resin to phenol is increased, the swelling of the resin by phenol, acetone and other materials is reduced, and the destructiveness of the material to the resin is reduced. The catalyst of the present invention plays the role of a cocatalyst through the addition of a modifier, and improves the conversion rate of reaction raw materials phenol and acetone.

Description

technical field [0001] The invention relates to a bisphenol A synthetic resin catalyst and a preparation method thereof, in particular to a high-strength bisphenol A resin catalyst and a preparation method thereof. Background technique [0002] Bisphenol A is the abbreviation of diphenol-based propane, also known as 2,2-bis(4-hydroxyphenyl)propane. As an important organic chemical raw material, bisphenol A mainly produces polysulfone resin, polyphenylene ether resin, Polycarbonate, epoxy resin and other polymer materials are also used in fine chemical products such as plasticizers, flame retardants, antioxidants, heat stabilizers, rubber antioxidants, pesticides, coatings, etc. The demand for A is increasing day by day. In industry, fixed-bed reactors are basically used to produce bisphenol A. At present, because the bisphenol A production technology independently developed in China cannot meet the needs of the production process in terms of catalyst technology, the quality...

AI Technical Summary

Problems solved by technology

In industry, fixed-bed reactors are basically used to produce bisphenol A. At present, because the bisphenol A production technology independently developed in China cannot meet the needs of the production process in terms of catalyst technology, the quality is far from meeting the market demand. Bisphenol A production technology has been imported from abroad, but due to the monopoly of foreign companies on catalyst technology, they can only import high-priced resin catalysts. The localization of bisphenol A technology has been severely restricted. To improve the production capacity of bisphenol A in my country To produce high-quality bisphenol A products, it is necessary to produce a resin catalyst with excellent performance

[0003] In the reaction process of bisphenol A catalyzed by the resin catalyst bed, the flow direction of the mixed material in the fixed bed is vertical. When the material flows downward, the pressure drop through the resin catalyst bed is a big problem, which limits the reaction. The flow of substances and products ultimately hinders the formation of bisphenol A

Due to the swelling property of the resin itself, the resin is easily deformed by compression and the crushing of the resin is the main factor for the pressure drop, which limits the scope of use of the resin catalyst.

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