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Preparation method of C5/C9 hydrocarbon resin

A technology for hydrogenating petroleum resins and petroleum resins, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc. The effect of improving compatibility and reducing energy consumption in production

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

AI Technical Summary

Problems solved by technology

Hydrogenated petroleum resin is light in color (close to colorless), odorless and tasteless, has excellent oxidation resistance, heat resistance, and UV resistance. It is the main choice to replace most existing petroleum resin applications. The main defect is that the resin saturation increases , Compatibility with EVA, SIS, SBS and other polar resins is significantly reduced

Method used

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  • Preparation method of C5/C9 hydrocarbon resin
  • Preparation method of C5/C9 hydrocarbon resin
  • Preparation method of C5/C9 hydrocarbon resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0081] The following table 8 is the embodiment of preparing C5 / C9 petroleum resin, the raw material is Pd / Al 2 o 3 The processes of catalyst selective hydrogenation, Friedel-Crafts catalyst pretreatment and subsequent catalyst removal, raw material rectification to remove oligomers, solvent dilution, and resin polymerization liquid catalyst removal are as follows:

[0082] (1) Prepare C5 / C9 petroleum resin polymerization raw material D from three raw materials A, B, and C;

[0083] (2) After dehydrating the above-mentioned polymerization raw material D through a 4A molecular sieve packed tower, use Pd / Al 2 o 3 The catalyst is selectively hydrogenated to remove alkynes, then add Friedel-Crafts catalyst and pre-polymerize at room temperature for 0.5-1.5 hours, then remove the catalyst with a mixture of calcium hydroxide and methanol, and obtain polymerization raw materials with a boiling point of 25-180°C after distillation Fraction E;

[0084] (3) Thermally prepolymerizing ...

Embodiment 7～10

[0090] Table 9 is an example of the hydrogenation process in the method of the present invention. The C5 / C9 petroleum resin liquid used in Examples 7 to 10 is prepared by the polymerization process in Example 2, and is removed by vacuum distillation in the post-hydrogenation treatment. The solvent and oligomer process technology is:

[0091] (1) The above resin solution is dehydrated by electro-desalting, and then passed through active Al 2 o 3 solid bed;

[0092](2) The C5 / C9 petroleum resin liquid after the above pretreatment is dissolved in a diluting solvent, and hydrogenation reaction is carried out in the presence of a modified Pd catalyst to obtain a hydrogenated diluted resin liquid;

[0093] (3) Remove the solvent and oligomers from the above-mentioned hydrogenated diluted resin liquid through a vacuum rectification tower with an operating pressure of -0.075 ~ -0.090 MPa and a temperature of 220 ° C to obtain C5 / C9 hydrogenated petroleum resin .

[0094] The hydro...

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Abstract

The invention relates to a preparation method of C5 / C9 hydrocarbon resin. The method comprises the following steps of: mixing piperlene fraction, crude isoamylene fraction and C9 fraction, pre-polymerizing the mixture at 180 to 230 DEG C, and finally polymerizing the mixture under the catalyzing of a gaseous boron trifluoride catalyst to obtain C5 / C9 hydrocarbon resin liquid; performing electrolytic desalting and dehydrating on the resin liquid, preprocessing the resin liquid through an active Al2O3 solid bed layer prior to hydrogenising, and then catalyzing and hydrogenising the resin liquid through a Pd / Zns / Al2O3 catalyst with ethyl methyl cyclohexane serving as solvent, and finally performing decompression and rectification on the resin liquid to remove the solvent and oligomer to obtain the C5 / C9 hydrocarbon resin. The C5 / C9 hydrocarbon resin prepared by the method based on hydrogenising has the advantages of light color, moderate softening point and high compatibility with most polarity resin, and can be widely used in the field of adhesives.

Description

technical field [0001] The invention belongs to the field of petroleum resin modification, in particular to a preparation method of C5 / C9 hydrogenated petroleum resin. Background technique [0002] Petroleum resin is a solid or viscous liquid medium and low molecular weight polymer obtained by polymerizing the by-products C5 and C9 fractions of ethylene plants as the main raw materials. 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] C5 / C9 copolymerized petroleum resin is a petroleum resin category obtained by polymerization of aliphatic C5 fraction and alicyclic C9 fraction under certain process conditions. Due to the chain link characteristics in its molecule, the performance of this kind of resin has both the respective performances of C5 resin and C9 resin: compared with C9 petroleum resin, this kind of resin has good compatibility wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F8/04C08F4/14B01J27/045
Inventor 孙向东王斌李爱元彭振博
Owner HENGHE MATERIALS & SCI TECH CO LTD
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