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Chlorinated polypropylene (CPP)
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Chlorinated polypropylene (CPP)
Product Description
Product Introduction
Chlorinated polypropylene is a thermoplastic resin obtained by chlorinating and modifying polypropylene. It appears as a white, amorphous solid, a white or pale yellow powder, or yellow to pale yellow granules. Chlorinated polypropylene is non‑toxic and soluble in halogenated hydrocarbons, toluene, and other solvents. Depending on its chlorine content, its melting point typically ranges from 80 to 160°C, while its decomposition temperature lies between 70 and 160°C. Products with low chlorine levels begin to decompose slowly above 40°C, and at temperatures exceeding 70°C, the decomposition rate becomes extremely rapid. It finds extensive applications in the coatings (primarily composite inks) and adhesives industries.
Scope of Application
Due to its excellent adhesion to polypropylene surfaces, CPP also exhibits strong bonding to a variety of materials, including polyethylene, paper, and lead‑based films. Coupled with its favorable properties—such as high hardness, good abrasion resistance, salt‑water resistance, and aging resistance—it is widely used in the printing ink, plastic, and metal‑bonding industries. In particular, it is extensively employed in the production of printing inks for composite materials in the packaging sector, such as double‑layer PP films, PP–paper laminates, and PP–aluminum composites. Additionally, CPP finds limited applications as a pigment carrier in coatings and as a water‑repellent agent. Moreover, because chlorinated polypropylene contains chlorine atoms along its polymer backbone, it is also utilized to some extent as a flame retardant.
Main Technical Parameters
Application areas
Application areas: composite inks, flexible packaging inks, automotive coatings, adhesives
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