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Method for preparing cold-polymerized indene resin with high softening point and light color

A high softening point, indene resin technology, applied in application, coating, ink, etc., can solve the problems of unable to meet the high-end market demand, unable to obtain high-quality performance resin products, resin hue, poor compatibility, etc.

Active Publication Date: 2012-10-24
HENGHE MATERIALS & SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal polymerization process of C9 petroleum resin has the advantages of simple process, high conversion rate and output, and stable product performance. Its main defect is that it is impossible to obtain high-quality resin products. High-end market demand, generally only used in alkyd paint and rubber mixing and other fields, the product added value is low

Method used

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  • Method for preparing cold-polymerized indene resin with high softening point and light color
  • Method for preparing cold-polymerized indene resin with high softening point and light color
  • Method for preparing cold-polymerized indene resin with high softening point and light color

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The by-product C9 fraction of ethylene cracking is rectified under vacuum at -0.085MPa to intercept fraction A with a boiling point of 180-230°C, and then depolymerized and rectified in a depolymerization reactor at 0.10MPa and 240°C to obtain a fraction A with a boiling point of 180-230°C. Fraction B at 230°C had a depolymerization residence time of 3.5 hours. Fraction B was prepolymerized with 0.3wt% boron trifluoride ether catalyst at room temperature for 1.5 hours, then the catalyst was removed with a mixture of calcium hydroxide and methanol, and fraction C with a boiling point of 180-230°C was obtained by rectification.

[0068] Put the above-mentioned fraction C into a stirred reactor, slowly add boron trifluoride ether catalyst accounting for 1.5wt% of the total material mass at a temperature of -5°C for 1 hour, and then heat-preserve and polymerize at 25°C for 1.5 hours, to obtain a polymerization liquid; drop into the above-mentioned polymerization liquid into...

Embodiment 2

[0074] The by-product C9 fraction of ethylene cracking is rectified under vacuum at -0.085MPa to intercept fraction A with a boiling point of 180-230°C, and then depolymerized and rectified in the depolymerization reactor at 0.10MPa and 230°C to obtain a fraction A with a boiling point of 180-230°C. Fraction B at 230°C had a depolymerization residence time of 5 hours. Fraction B was prepolymerized with 0.3wt% boron trifluoride ether catalyst at room temperature for 1.5 hours, then the catalyst was removed with a mixture of calcium hydroxide and methanol, and fraction C with a boiling point of 180-230°C was obtained by rectification.

[0075]Put the above fraction C into a stirred reactor, slowly add boron trifluoride diethyl ether catalyst accounting for 1.0wt% of the total material mass at 0°C for 1 hour, and then heat-preserve and polymerize at 25°C for 2 hours, Obtain the polymerization liquid; drop into the above-mentioned polymerization liquid the calcium hydroxide of 3 t...

Embodiment 3

[0081] The by-product C9 fraction of ethylene cracking is rectified under vacuum at -0.085MPa to intercept the fraction A with a boiling point of 180-230°C, and then depolymerized and rectified in the depolymerization reactor at 0.08MPa and 230°C to obtain a fraction A with a boiling point of 180-230°C. Fraction B at 230°C had a depolymerization residence time of 6 hours. Fraction B was prepolymerized with 0.3wt% boron trifluoride ether catalyst at room temperature for 1.5 hours, then the catalyst was removed with a mixture of calcium hydroxide and methanol, and fraction C with a boiling point of 180-230°C was obtained by rectification.

[0082] Put the above-mentioned fraction C into a stirred reactor, slowly add boron trifluoride ether catalyst accounting for 0.8wt% of the total material mass at a temperature of 5°C, and add it for 1 hour, and then heat-preserve and polymerize at 25°C for 2 hours, Obtain the polymerization liquid; drop into the above-mentioned polymerization...

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Abstract

The invention relates to a method for preparing a cold-polymerized indene resin with high softening point and light color. The method comprises a step of intercepting a fraction A having a boiling point of 180 to 230 DEG C from a C9 fraction which is a byproduct of ethene pyrolysis; a step of getting a fraction B through removing most DCPD, DMCPD, CPD-MCPD dimers by depolymerizing in a depolymerization reactor at atmospheric pressure; a step of getting a fraction C through pre-polymerizing the fraction B by a Friedel-Crafts catalyst at room temperature; a step of getting a polymerization solution by polymerizing at 10 to 45 DEG C in which the fraction C is used as raw materials and boron trifluoride ether or gas boron trifluoride is used as a catalyst; a step of getting a resin solution through removing the catalyst by using a mixture of calcium hydrate and methanol or ethanol; and a step of getting the cold-polymerized indene resin through removing a solvent by distillation under a reduced pressure. The method is simple in technology and mild in reaction condition, and the prepared indene resin has high softening point and light color, and is applicable in the fields of high-grade paint, printing ink, printing, etc.

Description

technical field [0001] The invention belongs to the field of preparation of cold polyindene resin, in particular to a preparation method of high softening point light color cold polyindene resin. Background technique [0002] Petroleum resin is a solid or viscous liquid polymer with relatively low molecular weight, which is obtained by polymerizing the by-product C5 / C9 fraction of the ethylene plant as the main raw material. According to the monomer and molecular structure of the resin, it can be roughly divided into aromatic petroleum resin, aliphatic petroleum resin and alicyclic petroleum resin. [0003] Aromatic petroleum resin, also known as C9 petroleum resin, is obtained by polymerizing the above-mentioned ethylene by-product C9 distillate as a raw material. The raw material for its production is mainly the cracked C9 distillate oil produced by the ethylene plant, accounting for about 10% to 20% of the ethylene production. The distillate has complex components and is...

Claims

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Application Information

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IPC IPC(8): C08F240/00C08F6/08C09D157/02C09D11/10C09D11/108
Inventor 孙向东王斌徐迪静陈碧芬
Owner HENGHE MATERIALS & SCI TECH CO LTD
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