MUMBAI, India, Feb. 6 -- Intellectual Property India has published a patent application (202541121270 A) filed by Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, on Dec. 3, 2025, for 'multifunctional properties of light weight polypropylene dual nano-hybrid composites system after novel step wise hydrothermal aging.'

Inventor(s) include Nanoth, Rasana; Leena, Snaha; and Karingamanna, Jayanarayanan.

The application for the patent was published on Feb. 6, under issue no. 06/2026.

According to the abstract released by the Intellectual Property India: "The present disclosure relates to a hybrid nanocomposite comprises: 98 to 99 % w/w of a polymer matrix; 0.5 to 1 % w/w of a metal carbide nanofiller; and 0.5 to 1 % w/w of a carbon-based nanofiller. The present disclosure also relates to a method of preparation of a hybrid nanocomposite by mixing 98 to 99 % w/w of a polymer matrix with 0.5 to 1 % w/w of a metal carbide nanofiller and 0.5 to 1 % w/w of a carbon-based nanofiller to obtain a homogeneously mixed blend which is processed by extrusion to obtain an extrudate strands. The extrudate strands are pelletized to obtain a composite pellets and molding the composite pellets by injection molding to form a hybrid nanocomposite. The hybrid nanocomposite of the present disclosure shows superlative mechanical and viscoelastic properties. The hybrid nanocomposite of the present disclosure incorporates ceramic-based tungsten carbide and carbon-based graphene nanofillers within the polypropylene matrix, which induces an annealing effect after hydrothermal aging promoting the formation of new crystals. The unique synergism and mechanism retain the multifunctional properties of light weight PP composite system even after aging, distinguishing the hybrid system described herein."

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