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High-performance polymer resin with controllable melt viscosity, and preparation method thereof

A polymer resin and melt viscosity technology, which is applied in the field of petroleum resin products and its preparation, can solve problems such as the inability to meet the resin viscosity requirements, achieve the effect of small fluctuations, ensure stability, and prevent large fluctuations

Pending Publication Date: 2018-06-29
安徽同心新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the difficulty of large and fine adjustment of the resin viscosity by using the existing preparation method, so as to fail to meet the requirements of resin viscosity in different application fields, and to provide a high-performance polymer resin with controllable melt viscosity and its preparation method

Method used

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Examples

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preparation example Construction

[0030] A kind of preparation method of the high-performance polymeric resin with controllable melt viscosity of the present invention, comprises the following steps:

[0031] 1) With carbon five diolefins, monoolefins and styrenes as reaction raw materials, the mass ratio of carbon five diolefins: monoolefins: styrenes: solvent oil is (1~20): (1~15): (0 ~10): (1~15) Weigh the reaction raw materials and solvent oil respectively, and mix them evenly;

[0032] 2) First pump the solvent into the reaction kettle, and then add aluminum trichloride powder or liquid aluminum trichloride with a total mass of 0.6 to 3% of the reaction material as a catalyst;

[0033] 3) After the temperature in the reactor reaches the synthesis temperature of 50-90°C, use a metering pump to add the mixed materials into it by dropwise addition for reaction. The dropwise addition is completed within 0.5-2 hours, and the reaction pressure is controlled to be less than 1Mpa;

[0034] 4) The reaction time i...

Embodiment 1

[0038] 150 g of piperylene (trans-1,3-pentadiene: cis-1,3-pentadiene=1.54), 120 g of isopentene and 50 g of n-pentane were weighed and mixed uniformly. Then first add 100 g of n-pentane in the reactor, and then add 4 g of aluminum trichloride as a catalyst. After the reaction temperature reaches 55°C, use a metering pump to add the mixed materials dropwise, and control the dropwise addition within 30 minutes. After reacting for 1 h, the reaction product was washed 3 times with water. Then the obtained water-washed polymer solution was stripped and filtered under reduced pressure to obtain the final product, which had a softening point of 95°C, a Gardner color number of No. 2.5, and a melt viscosity of 80 cps at 200°C.

Embodiment 2

[0040] Weigh respectively 100g isoprene, 50g piperylene, 150g monoolefin (mass ratio isopentene: cyclopentene: n-pentene=3:1:1), 100g solvent (mass ratio n-pentane: heptane alkane=1:1) mixed evenly, in the reaction ingredients, trans-1,3-pentadiene:cis-1,3-pentadiene=0.12, isoprene:cis-1,3-pentadiene=2.24 . Then first add 100 g of n-pentane into the reactor, and then add 6 g of aluminum trichloride as a catalyst. After the reaction temperature reaches 60°C, use a metering pump to add the mixed materials dropwise, and control the dropwise addition within 60 minutes. After reacting for 0.5 h, the reaction product was washed 5 times with water. Then the resulting water-washed polymer solution was stripped and filtered under reduced pressure to obtain the final product, which had a softening point of 95°C, a Gardner color number of No. 3, and a melt viscosity of 200 cps at 200°C.

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Abstract

The invention discloses a high-performance polymer resin with a controllable melt viscosity, and a preparation method thereof, and belongs to the technical field of petrochemical industry. The methodcan realize the production of petroleum resin with an approaching softening point index and the controllable and adjustable melt viscosity by the adjustment of a technology, and concretely comprises the following steps: oil raw materials which include C5 diolefin, monoolefin, styrene and solvent oil are dropwise added into a reaction kettle, a Lewis acid catalyst is added, a reaction is carried out at a reaction temperature of 50-90 DEG C under a reaction pressure of below 1 Mpa for 0.5-4 h, and water washing and solvent removal are carried out after the reaction ends in order to obtain the final petroleum resin product. The obtained petroleum resin has a Gardner color of No.2 to No.5 color, a softening point of 70-104 DEG C and a melt viscosity at 200 DEG C of 40-300 cps. The petroleum resin with various different viscosities can be prepared in the invention to meet the needs of different application fields.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and more specifically relates to a petroleum resin product with a controllable melt viscosity index and a preparation method thereof. Background technique [0002] Petroleum resin is a kind of thermoplastic resin polymerized by the C5 and C9 fractions of the by-products in the ethylene cracking process as the main raw materials. Stable, good compatibility and so on. Among them, the physical properties of C5 petroleum resin, such as: softening point, chroma, melt viscosity, acid value, etc., are important factors affecting the application field of C5 petroleum resin, and the melt viscosity index of C5 petroleum resin is very important for its specific application . [0003] For example, the melt viscosity of C5 petroleum resin will affect the wettability of hot melt adhesive and pressure sensitive adhesive. Coating of pressure-sensitive adhesive; if its melt viscosity is too low,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00
CPCC08F240/00
Inventor 张素芳郭书成李昝牛凯高晓鹏赵建云蒋伟丽
Owner 安徽同心新材料科技有限公司
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