Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for continuously producing hydrocarbon resins using molecular distillation technology

A hydrocarbon resin and molecular distillation technology, which is applied in the field of polymer materials and production automation, can solve the problems of reduced production efficiency, performance degradation, energy consumption, etc., and achieve the effects of efficient continuous production, shortened reaction time, and improved production efficiency

Active Publication Date: 2019-04-19
RACHEM CHINA CO LTD +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the normal-pressure boiling point of the oligomers in the resin is above 250°, it is often necessary to raise the temperature to 250°C or even 300°C to remove the oligomers by vacuum distillation in production, which not only consumes energy and reduces production efficiency, but also tends to It will lead to discoloration of the resin and decrease in performance; while the method of vacuum stripping needs to consume a large amount of water vapor, reduce production efficiency, and generate a large amount of waste water
In the prior art, it is often necessary to add terminator, lye, neutralize and wash Lewis acid, which will produce a large amount of waste water and pollute the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for continuously producing hydrocarbon resins using molecular distillation technology
  • A method for continuously producing hydrocarbon resins using molecular distillation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Prepare the reaction monomer mixture: the reaction monomer is a mixture of α-methylstyrene and styrene with a molar ratio of 1:1, and mix well;

[0050]Prepare the initiator dispersion system: the solid powdery boron trifluoride dimethyl carbonate complex (molecular weight 157.9, boron trifluoride accounts for 40% by weight of the boron trifluoride dimethyl carbonate complex), add toluene In the solvent, stir evenly, and the concentration of the initiator (boron trifluoride dimethyl carbonate complex) is 8.6mmol / L.

[0051] The flow rate of the reaction monomer is 10 ml / min, and the flow rate of the initiator dispersion system is 10 ml / min. The initiator concentration after mixing was 4.3mmol / L. The reaction temperature is 20°C, the reaction residence time is 30s, and then passes through the primary filter and the secondary filter, and flows into the thin film evaporator. The temperature of the thin film evaporator is 140°C, and the operating pressure is 300mbar. 70 °...

Embodiment 2

[0053] Prepare the reaction monomer mixture: the reaction monomer is a mixture of piperylene and cyclopentene with a molar ratio of 1:1, and mix well.

[0054] Prepare the initiator dispersion system: add solid powdery boron trifluoride acetonitrile complex (molecular weight 108.9, boron trifluoride accounts for 60% of the weight content of boron trifluoride acetonitrile complex) in toluene solvent, stir evenly, The concentration of the initiator (boron trifluoride acetonitrile complex) was 11.2 mmol / L.

[0055] The flow rate of the reaction monomer is 10 ml / min, and the flow rate of the initiator dispersion system is 10 ml / min. The initiator concentration after mixing was 5.6mmol / L. The reaction temperature is 15°C, the reaction residence time is 200s, and then passes through the primary filter and the secondary filter, and flows into the thin film evaporator. The temperature of the thin film evaporator is 130°C, and the operating pressure is 300mbar. 65.3 °, then enter the...

Embodiment 3

[0057] Prepare the reaction monomer mixture: the reaction monomer is a mixture of piperylene and styrene with a molar ratio of 1:1, and mix well;

[0058] Prepare the initiator dispersion system: add solid powdery boron trifluoride acetonitrile complex (molecular weight 108.9, boron trifluoride accounts for 60% of the weight content of boron trifluoride acetonitrile complex) into xylene solvent, stir well , the concentration of the initiator (boron trifluoride acetonitrile complex) was 9.8 mmol / L.

[0059] The flow rate of the reaction monomer is 10 ml / min, and the flow rate of the initiator dispersion system is 10 ml / min. The initiator concentration after mixing was 4.9 mmol / L. The reaction temperature is 18°C, the reaction residence time is 240s, and then passes through the primary filter and the secondary filter, and flows into the thin film evaporator. The temperature of the thin film evaporator is 150°C, and the operating pressure is 200mbar. 72.3°, then enter the short...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for continuously producing carbon-hydrogen resin by the aid of molecular distillation technologies. The method includes steps of (1), adding Lewis acid into solvents to prepare initiator dispersion systems; (2), uniformly mixing reactive monomers with one another, mixing the reactive monomers and the initiator dispersion systems in a micro-mixer with one another in a contact manner, carrying out reaction and carrying out continuous reaction in delay tubes after the reaction is carried out in the micro-mixer; (3), removing solid Lewis acid from products by the aid of filters; (4), allowing filtered products to flow into a film evaporator to respectively obtain light distillates and intermediate resin, directly feeding the resin into a product tank if a softening point of the resin is qualified, starting to granulate and package the resin if the softening point of the resin is qualified, or feeding the intermediate resin in a short-path distiller to carry out fractional distillation if the softening point of the resin is not qualified. The products at the step (3) are discharged from the delay tubes. The method has the advantages that the resin can be safely, reliably, efficiently and continuously produced by the aid of the method, the reaction time can be shortened to a great extent, and the production efficiency can be improved. The invention further discloses the carbon-hydrogen resin prepared by the aid of the method.

Description

technical field [0001] The invention relates to a method for continuously producing hydrocarbon resins by using molecular distillation technology, and belongs to the technical field of polymer materials and production automation. Background technique [0002] When producing aromatic hydrocarbon resins (such as C5 / C9 petroleum resins), since such resins have requirements on performance indicators such as softening point and color, such as application number CN201510057666.5, the title of the invention is "A Method for Improving the Performance of Petroleum Resin Products" Method", the application number is CN201310322381.0, the invention name is "Synthesis method of modified piperylene resin", the application number is CN200610030765.5, the invention name is "A Production Process of High-grade Piperylene Petroleum Resin" In the disclosed technical solutions, steps such as vacuum distillation and vacuum stripping are often required to remove oligomers in the resin so as to inc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/12C08F212/08C08F236/04C08F232/04C08F6/10C08F2/01
CPCC08F2/01C08F6/10C08F212/08C08F212/12C08F232/04C08F236/045C08L25/16C08L25/08C08L47/00C08L45/00
Inventor 李卞樊云峰
Owner RACHEM CHINA CO LTD