Sinopec has been granted an invention patent: “Antistatic polypropylene sheet and its fabrics, high-strength, high-impact antistatic polypropylene composite materials, as well as their manufacturing methods and applications””
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Sinopec has been granted a patent: “Antistatic polypropylene sheets and their fabrics, high-strength and high-impact-resistant antistatic polypropylene composite materials, as well as their preparation methods and applications”. According to Securities Star on November 13, 2025, data from the Tianyancha APP shows that Sinopec (600028) has newly obtained this patent. The patent title is “Antistatic polypropylene sheets and their fabrics, high-strength and high-impact-resistant antistatic polypropylene composite materials, as well as their preparation methods and applications”. The patent application number is CN202310485595.3, and the date of authorization was November 11, 2025. Patent abstract: This invention relates to the field of polypropylene materials, and discloses an antistatic polypropylene sheet, an antistatic polypropylene fabric, a high-strength, high-impact, antistatic polypropylene composite material, as well as its preparation methods and applications. This polypropylene sheet consists of layer A, along with layers B and B’ located on either side of layer A, resulting in a BAB structure’ ； Layer A contains homopolymeric polypropylene a, impact-resistant copolymeric polypropylene b, and conductive filler; Layer B and Layer B’ are the same or different, each containing conductive filler, random copolymeric polypropylene x, and thermal bonding enhancer y. The antistatic polypropylene composite material is obtained from the antistatic polypropylene sheet of the present invention through hot pressing, etc. This antistatic polypropylene composite material exhibits excellent mechanical properties; moreover, it has very good interlayer peel strength. Even at lower hot-pressing temperatures and within a wide range of hot-pressing temperatures, the interlayer peel strength of the resulting polypropylene composite material remains high.
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