Two-stage pre-polymerization! Sinopec secures new polyolefin catalyst patent

By SKYSEVEN Chemical Technical Team · 2026-09-23

Share:

Recently, Sinopec (600028) has been granted a new invention patent, with the patent name being Method for prepolymerization of polyolefin catalyst and its application, and polyolefin polymerization method, patent number CN202310735889.7, and authorization date September 4, 2026.

This patent belongs to the technical field of olefin polymerization, and its core innovation is the adoption of two-stage prepolymerization interaction process: first, the first polymerization monomer and the polyolefin catalyst composition complete the first-stage prepolymerization to prepare a prepolymerized catalyst slurry; then, the slurry and the second polymerization monomer carry out the second-stage prepolymerization.

A temperature difference is set between the two stages of reactions, and the temperature of the second-stage interaction is 0.5-70℃ higher than that of the first-stage. This solution can significantly alleviate the sector pain points of polymer breakage and substantial particle agglomeration during the production of polyolefin items.

Accelerated R&D: Sharp development in patent authorization volume within the year, continuous increase in R&D investment

Since the beginning of this year, the number of newly granted patents by Sinopec has reached 4,344, a year-on-year increase of 77.16%. The R&D investment has continued to increase, with the company's R&D expenses reaching 7.785 billion yuan in the first half of 2026, a year-on-year development of 25.85%, and the technological innovation efforts have continued to enhance.

Enterprise sci-tech foundation: Vast patent reserve, extensive manufacturing layout

According to Tianyancha data, China Petroleum & Chemical Corporation has a total of 271 foreign invested companies and has participated in 18,022 bidding projects cumulatively. In terms of intellectual property rights, the company holds 106 trademarks, 94,108 patents in total, 1,562 software copyrights, and also holds 41 administrative licenses. The huge patent reserve provides support to the industrialization of new materials and high-end chemical technologies.

Technical value: Optimized polyolefin catalyst helps the research of high-end chemical materials

Polyolefin is a core basic chemical material, and the catalyst prepolymerization process immediately affects the particle morphology and production stability of the product. The recently granted two-stage gradient prepolymerization patent specifically solves the problems of particle breakage and agglomeration, which is conducive to improving the production stability and product condition of polyolefin, and reflects Sinopec's continuous technological iteration in the polyolefin new material track.

Previous

The Lithium Hexafluorophosphate Market Remained Sable at a High Level in September

Next

On September 22, the average wear difference of cis -65.50 yuan/ton

Quick inquiry

Create

Inquiry Sent

We will contact you soon