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Polypropylene resin: formula analysis, composition analysis. Professional testing agency – team of experienced experts – precise analysis services – advanced instrumentation. Zhebo Testing Technology Services – Zhejiang University branch – 0571-87359461. http://www.zhebochem.com. Zhebo Testing offers [testing of the properties of various fine chemicals and polymer materials, composition analysis, formula reconstruction, process analysis]. Led by doctors from renowned universities and research institutions, along with professional analysis experts. Keywords: polypropylene resin, formula analysis, composition analysis. Polypropylene resin is a resin synthesized through the copolymerization of polyacrylate and methacrylate compounds as well as other olefinic monomers. By selecting different resin structures, formulas, production processes, and solvent compositions, it is possible to create acrylic resins with varying types, properties, and applications. Acrylic resins can be further divided into thermoplastic acrylic resins and thermosetting acrylic resins, based on differences in their structure and film-forming mechanisms. Thermoplastic acrylic resins do not undergo further cross-linking during the film-forming process; as a result, they have a high relative molecular weight. They offer good light and color retention, resistance to water and chemicals, fast drying times, and are easy to apply. They are also suitable for reapplication and repair work. When used in the production of aluminum powder coatings, they contribute to good whiteness and precise positioning of the aluminum powder. Thermoplastic acrylic resins are widely used in industries such as automobiles, electrical appliances, machinery, and construction. Thermosetting acrylic resins are those that contain certain functional groups in their structure; during paint formulation, these functional groups react with those present in amino resins, epoxy resins, polyurethanes, etc., to form a network structure. Thermosetting resins generally have a relatively low molecular weight. Thermosetting acrylic coatings exhibit excellent fullness, gloss, hardness, solvent resistance, weather resistance, and do not change color or turn yellow when baked at high temperatures. The most important application is in combination with amino resins to produce amino-acrylic topcoats, which are currently widely used in products such as automobiles, motorcycles, bicycles, and coiled steel. The main absorption peak of polypropylene resin for light lies outside the range of the solar spectrum; therefore, the acrylic resin paint produced possesses excellent light resistance and performance against outdoor aging. At the same time, polypropylene resin is harmful to the human body; skin contact can cause skin irritation, discomfort, and rashes ； Eye contact can cause eye irritation, tearing, or blurred vision ； Inhaling this product can cause irritation of the upper respiratory tract, coughing and discomfort, or unspecified unpleasant symptoms such as nausea, headache or weakness ； Ingesting this product can cause specific uncomfortable symptoms such as nausea, headache, or weakness. Therefore, special care is required when using it. The analysis of polypropylene resin products generally involves techniques such as infrared spectroscopy (FTIR), nuclear magnetic resonance (1H NMR), mass spectrometry (MS), X-ray diffraction analysis (XRD), ICP-MS, X-ray fluorescence spectroscopy, and ion chromatography. Through these testing methods, it is possible to effectively analyze the formulation of polypropylene resin, gain a detailed understanding of the functions of its components, which facilitates research and development efforts by various companies and helps them keep track of market trends. Relying on Zhejiang University’s academic strengths and its team of analytical experts, Zhebo Testing possesses a variety of analytical methods and has accumulated extensive experience in the analysis of chemical products. It uses professional, reliable, and comprehensive separation and testing techniques to conduct qualitative identification and quantitative analysis of unknown substances, providing a scientific basis for formulating adjustments in research and production, developing new products, and improving manufacturing processes. Additionally, it can offer technical support for follow-up actions based on customers’ needs.