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
View PDF13 Cites 16 Cited by
  • 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

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
  • 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

Example Embodiment

[0066] Example 1

[0067] The C9 fraction, a byproduct of ethylene cracking, was subjected to vacuum distillation at a vacuum of -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 boiling point of 180- Fraction B at 230°C has a depolymerization residence time of 3.5 hours. Fraction B is prepolymerized at room temperature with 0.3wt% boron trifluoride ether catalyst for 1.5 hours, then the catalyst is removed with a mixture of calcium hydroxide and methanol, and fraction C with a boiling point of 180-230°C is obtained by rectification.

[0068] Put the above fraction C into a stirred reactor, slowly add 1.5wt% of boron trifluoride ether catalyst at a temperature of -5°C, adding time for 1 hour, and then heat and hold at 25°C for 1.5 Calcium hydroxide with 3 times the weight of the catalyst and methanol accounting for 1 / 3 of the mass of calcium hydroxide were added i...

Example Embodiment

[0073] Example 2

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

[0075] Put the above fraction C into a stirred reactor, slowly add 1.0wt% of boron trifluoride ether catalyst at 0°C temperature, adding time for 1 hour, and then heat and polymerize at 25°C for 2 hours. A polymerization solution is obtained; 3 times the weight of calcium hydroxide of the catalyst is added into the polymerization solution, an...

Example Embodiment

[0080] Example 3

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

[0082] Put the above fraction C into a stirred reactor, slowly add 0.8wt% of boron trifluoride ether catalyst at a temperature of 5°C, adding time for 1 hour, and then heat and polymerize at 25°C for 2 hours. A polymerization solution is obtained; 3 times the weight of calcium hydroxide of the catalyst is added into the polymerizati...

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 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

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
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap