Platinum complex catalyst and its preparation method and use

Abstract

The invention discloses a platinum complex catalyst as well as a preparation method and an application thereof, and relates to the field of platinum complex catalysts. The platinum complex catalyst comprises p-hydroxy benzaldehyde, citric acid, chloroplatinic acid hexahydrate and isopropyl alcohol, wherein a mole ratio of p-hydroxy benzaldehyde to citric acid to chloroplatinic acid hexahydrate is (1.2-1.3): (0.8-1): 1. The catalyst can be used for catalyzing hydrosilylation, particularly used for catalyzing hydrosilylation of allyl glycidyl ether and trimethoxy silane and used for synthesizing KH-560. On the basis of a Speier catalyst, a proper amount of p-hydroxy benzaldehyde and citric acid is added, compared with a conventional platinum complex catalyst, the platinum complex catalyst can maintain higher catalytic activity, shorten the induction period of the reaction, improve the catalytic efficiency of the reaction and increase the yield of KH-560 simultaneously when used for synthesizing KH-560, and in terms of trimethoxy silane, the yield is up to 91.2%.

Description

technical field [0001] The invention relates to the field of platinum complex catalysts, in particular to a platinum complex catalyst and its use in synthesizing KH-560, and a preparation method of the platinum complex catalyst. Background technique [0002] The chemical name of KH-560 is γ-glycidyl etheroxypropyl trimethoxysilane, which is a silane coupling agent with a wide range of uses. The molecule of KH-560 contains epoxy groups, which are highly reactive and easy to cross-link with other compounds. Therefore, KH-560 can improve the mechanical strength of composite materials and improve the humidity of integrated circuit materials and printed circuit boards. State of the electrical insulation properties, which are widely used in plastics, coatings, adhesives and other fields. [0003] The catalyst used in the existing method for synthesizing KH-560 is mainly a transition metal Pt (platinum) complex, such as Speier catalyst and Karstedt catalyst. [0004] The Speier c...

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Problems solved by technology

[0004] The Speier catalyst has high selectivity when catalyzing the hydrosilylation reaction of olefins containing active functional groups, but the activity of the catalyst is low, resulting in a longer induction period of the reaction and a lower reaction rate.

[0005] The Karstedt catalyst has higher activity, but due to the gelation of the catalyst, a variety of side reactions accompany the hydrosilylation reaction, resulting in too many allyl glycidyl ether isomers, resulting in KH-560 low yield

Using the existing Karstedt catalyst to synthesize KH-560, the yield is only 72.85%

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