A kind of synthetic method of styrene-modified dicyclopentadiene hydrogenation resin

A technology of dicyclopentadiene and hydrogenated resin, which is applied in the field of preparation of styrene-modified resin, can solve problems such as difficult to characterize, difficult to determine the composition of batch feeding, and difficult to produce consistent hot resin products, etc., reaching the price Moderate, low double bond content, reduce equipment investment costs and operating costs

Active Publication Date: 2020-05-29
王金书
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the recycle from thermal polymerization, the presence of AMS in combination with the unreacted olefinic material produced from DCPD makes it difficult to characterize the recycle composition, which in turn makes the composition of subsequent batches poorly defined, resulting in the use of recycled Difficulty producing a consistent hot resin product when cycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Polymerization: Dry the 10L reactor, take analytically pure styrene: dicyclopentadiene (produced by Shandong Yuhuang Chemical Co., Ltd., batch number 20150305, mass fraction 85%): cyclohexane = 1:10:10, add after drying The 10L reactor was replaced with nitrogen for several times to remove the oxygen in the reactor, and the stirring paddle was started to heat the raw materials, thermally polymerized at 240°C for 2-6h, cooled down to room temperature, and the dicyclopentadiene resin liquid was obtained for use.

[0031] Hydrogenation: add an appropriate amount of catalyst to the reaction kettle, replace the oxygen in the reaction kettle with hydrogen several times, start the stirring paddle to heat the raw material, raise the temperature to 160°C, feed hydrogen, increase the pressure to 5MPa, and the hydrogenation temperature is 200°C, the reaction React for 2-6h under the condition of pressure of 5MPa. The above-mentioned catalyst is a nickel-supported catalyst, and the...

Embodiment 2

[0034] Polymerization: Dry the 10L reactor, take analytically pure styrene: dicyclopentadiene (produced by Shandong Yuhuang Chemical Co., Ltd., batch number 20150305, mass fraction 85%): cyclohexane = 1:10:10, add after drying The 10L reactor was replaced with nitrogen several times to remove the oxygen in the reactor, and the stirring paddle was started to heat the raw materials, thermally polymerized at 260°C for 2-6h, cooled down to room temperature, and dicyclopentadiene resin liquid was obtained for later use.

[0035] Hydrogenation: add an appropriate amount of catalyst to the reaction kettle, replace the oxygen in the reaction kettle with hydrogen several times, start the stirring paddle to heat the raw material, raise the temperature to 160°C, feed hydrogen, increase the pressure to 5MPa, and the hydrogenation temperature is 200°C, the reaction React for 2-6h under the condition of pressure of 5MPa. The above-mentioned catalyst is a nickel-supported catalyst, and the m...

Embodiment 3

[0038] Polymerization: Dry the 10L reactor, take analytically pure styrene: dicyclopentadiene (produced by Shandong Yuhuang Chemical Co., Ltd., batch number 20150305, mass fraction 85%): cyclohexane = 1:10:10, add after drying The 10L reactor was replaced with nitrogen several times to remove the oxygen in the reactor, and the stirring paddle was started to heat the raw materials, and the thermal polymerization reaction was carried out at 280°C for 2-6h, and cooled down to room temperature to obtain a dicyclopentadiene resin liquid for later use.

[0039] Hydrogenation: add an appropriate amount of catalyst to the reaction kettle, replace the oxygen in the reaction kettle with hydrogen several times, start the stirring paddle to heat the raw material, raise the temperature to 160°C, feed hydrogen, increase the pressure to 5MPa, and the hydrogenation temperature is 200°C, the reaction React for 2-6h under the condition of pressure of 5MPa. The above-mentioned catalyst is a nick...

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PUM

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Abstract

The invention relates to the field of preparation of styrene modified resin, and particularly discloses a synthesis method of styrene modified dicyclopentadiene hydrogenation resin. The synthesis method is characterized by including the steps: mixing styrene, dicyclopentadiene and solvents, and performing thermal polymerization reaction on mixture to prepare dicyclopentadiene modified resin liquid; adding catalysts into the dicyclopentadiene modified resin liquid, and performing hydrogenation reaction on mixture to obtain the styrene modified dicyclopentadiene hydrogenation resin. The used catalysts are moderate in price, recyclable and low in hydrogenation temperature and reaction pressure, the resin and the catalysts are easily separated, investment cost and operation cost of the devicesare greatly reduced, the resin is low in double-bond content, shallow in chromaticity, moderate in aromatic content and good in heat stability and oxidation stability.

Description

[0001] (1) Technical field [0002] The invention relates to the field of preparation of styrene-modified resins, in particular to a synthesis method of styrene-modified dicyclopentadiene hydrogenation resins. [0003] (2) Background technology [0004] There are a large number of by-product C5 fractions in the process of petroleum cracking to produce ethylene, and the proportion of cyclopentadiene and dicyclopentadiene in the C5 fractions reaches 20-30%. Now that the separation process of C5 fraction has matured, how to make full use of the separated dicyclopentadiene to increase the added value of the industry has become a new research direction. [0005] Dicyclopentadiene can be polymerized to prepare bicyclic resins, which are thermoplastic hydrocarbon resins with relatively low number-average molecular weights, and are usually used as tackifiers, adhesives, hot-melt adhesives, pressure-sensitive adhesive tapes, Ink printing and rubber etc. However, dicyclopentadiene petr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/04C08F232/08C08F212/08C08F240/00
CPCC08F8/04C08F232/08C08F240/00C08F212/08
Inventor 徐龙坤庞飞郭春平袁本福王荣光王中亚王辉侯红霞王建伟王胜伟
Owner 王金书
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