MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202411014095 A) filed by Revalyu Resources Gmbh, Kleinostheim, Germany, on Feb. 27, 2024, for 'method for regeneration of polyester and recycling of polyester textile waste using a thermal treatment.'
Inventor(s) include Ajay Amrutkar; and Shivaji Minde.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "The invention relates generally to a recycling of polyesters such as polyethylene terephthalate (PET). The invention also relates to a process for producing a polyester the process comprising at least the following steps: a. providing a first polyester fragment; b. subjecting the first polyester fragment to a thermal treatment to obtain a second polyester fragment; c. contacting the second polyester fragment with an organic liquid to obtain a further polyester fragment; d. converting the further polyester fragment into a plurality of polyester solids. The first polyester fragment comprises a polyester polymer and a textile chemical. The second polyester fragment comprises less textile chemical than the first polyester fragment. The invention further relates to a polyester product obtainable by aforementioned process, a device for treating a polyester fragment and a use of polyester solids for a purpose such as de-esterification, an esterification, a fibre, a textile, a container, a film, or a combination of at least two thereof."
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