Methods for preparing COPNA resin using petrochemical aromatic oils and applications of COPNA resin

The preparation of COPNA resin by catalytic crosslinking-thermal shrinkage method solves the problem of efficient utilization of petrochemical aromatic oils, realizes the preparation of COPNA resin with high β resin content, enhances the utilization value of resources such as ethylene tar, and provides a preparation route for high value-added carbon materials.

CN116836370BActive Publication Date: 2026-06-30EAST CHINA UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA UNIV OF SCI & TECH
Filing Date
2023-06-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies fail to effectively utilize petrochemical aromatic oils such as ethylene tar, ethylene tar light components, ethylene tar heavy components, ethylene tar-to-diesel conversion, and ethylene tar-to-coated asphalt residues, leading to resource waste and environmental pollution, and failing to fully convert them into high-value-added carbon materials.

Method used

A catalytic crosslinking-thermal condensation method was adopted, in which petrochemical aromatic oil and crosslinking agent were crosslinked in a reactor, followed by thermal condensation. Unreacted oil and prepared COPNA resin were then separated by a separation tower and a dissolution tower. Finally, COPNA resin at different stages was separated by a filter to prepare B-COPNA resin with high β resin content.

Benefits of technology

This technology enables the efficient utilization of petrochemical aromatic oils, producing COPNA resin with high β-resin content. This resin can be used as an adhesive and plastic modifier, enhancing the utilization value of resources such as ethylene tar and providing a pathway for the preparation of high-value-added carbon materials.

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Abstract

This disclosure provides a method for preparing COPNA resin using petrochemical aromatic oil and the uses of the obtained COPNA resin. The method includes the following steps: a petrochemical aromatic oil crosslinking agent and a petrochemical aromatic oil raw material are subjected to a crosslinking reaction in a crosslinking reactor to obtain crosslinked aromatic oil; then, a condensation reaction is performed for thermal condensation; the condensed aromatic oil is fed into a primary separation tower for separation, with the bottom of the tower yielding reacted COPNA resin; the reacted COPNA resin and a resin solvent are fully dissolved in a dissolving tower, and then filtered through a primary filter to obtain C-COPNA resin and B-COPNA resin solution; the B-COPNA resin solution is mixed with a resin precipitant and fed into a settling tank to obtain a B-COPNA resin mixture; this mixture is then filtered through a secondary filter to obtain B-COPNA resin; the liquid phase product is then separated in a secondary separation tower, with the top of the tower yielding a regenerated resin solvent and the bottom yielding a regenerated resin precipitant. B-COPNA resin is used as a binder or plastic modifier.
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