Selective hydrogenation catalyst, method for preparing hydrogenated petroleum resin and hydrogenated petroleum resin prepared therefrom, hot-melt pressure-sensitive adhesive

Abstract

The invention discloses a selective hydrogenation catalyst, a method for preparing hydrogenated petroleum resin and the hydrogenated petroleum resin obtained therefrom, and a hot-melt pressure-sensitive adhesive, relating to the field of petrochemical industry. Above-mentioned selective hydrogenation catalyst comprises active component and carrier; Active component comprises palladium, nickel, cobalt, copper and platinum; The mass of palladium accounts for 0.3-2% of catalyst mass, and the total mass of nickel, cobalt, copper and platinum accounts for catalyst mass The catalyst has a specific surface area of ​​100-400m 2 / g, the particle size is 2-100μm, and the palladium metal particle size is 1-5nm. The active component of the selective hydrogenation catalyst is more conducive to the adsorption of carbon-carbon double bonds, weakens the adsorption of benzene rings, and then reduces the loss rate of benzene rings. In addition, the hydrogenated petroleum resin prepared by the invention has the advantages of water-white color, good aging resistance, good compatibility with polymer elastomers, controllable hydrogenation selectivity and the like.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a selective hydrogenation catalyst, a method for preparing hydrogenated petroleum resin and the hydrogenated petroleum resin obtained therefrom, and a hot-melt pressure-sensitive adhesive. Background technique [0002] Using cyclopentadiene compounds as raw materials, petroleum resins can be obtained through thermal polymerization or cationic polymerization, and dicyclopentadiene petroleum resins are more common. Dicyclopentadiene petroleum resin is a light yellow to brown thermoplastic solid with a molecular weight between 300-3000 and can be used in road marking paint, adhesives and rubber modification. However, dicyclopentadiene petroleum resin has darker color, strong smell and poor aging resistance, so dicyclopentadiene hydrogenated petroleum resin has been gradually researched and developed. [0003] Hot-melt pressure-sensitive adhesives (HMPSA for short) prepared by ...

AI Technical Summary

Problems solved by technology

In the process of using dicyclopentadiene hydrogenated petroleum resin to prepare HMPSA, it was found that the compatibility of dicyclopentadiene hydrogenated petroleum resin with polymer elastomers was not good, and the cohesive energy of dicyclopentadiene petroleum resin was low , the prepared HMPSA has low stickiness, low peel strength, and poor application performance in the field of disposable sanitary products

[0004] In order to solve the above problems, researchers copolymerized aromatic hydrocarbons containing benzene rings with dicyclopentadiene to introduce highly polar benzene rings into the resin. In the process of hydrogenation and saturation of the double bond, the added benzene ring is very easy to be hydrogenated and saturated at the same time, resulting in the saturation of some of the more polar benzene rings into less polar six-membered rings, so the phase of the copolymerization hydrogenation resin Capacitance improvement is limited, and most of them have problems such as strict requirements on raw materials, high cost of raw materials, poor effect and unsuitable for large-scale continuous operation.

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