Repsol has filed a patent for macroinitiators used in the synthesis of polymer polyols. The formula includes specific polyols, alkanediyl, and alkyl components. The invention aims to improve the process of obtaining dispersants for polymer polyol production. GlobalData’s report on Repsol gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Repsol, Photoelectrochemical water splitting was a key innovation area identified from patents. Repsol's grant share as of January 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
A recently filed patent (Publication Number: US20240010790A1) discloses a novel macroinitiator formula for use in the preparation of polymer polyols. The macroinitiator, as described in the claims, includes specific components such as polyols with defined molecular weights and hydroxyl groups, alkanediyl or alkenediyl groups, and alkyl or aryl substituents. The process for preparing the macroinitiator involves reacting a cyclic anhydride with an organic hydroperoxide and a haloformate. The patent also details a method for preparing a polymer polyol using the macroinitiator in combination with ethylenically unsaturated monomers like styrene and acrylonitrile, along with a chain transfer agent. The resulting polymer polyol can contain up to 60% of a dispersed polymer derived from the monomers, stabilized with a dispersant obtained in situ during the polymerization process.
Furthermore, the patent outlines specific weight proportions and ratios for the components involved in the polymer polyol preparation process, emphasizing the importance of controlled conditions for optimal results. The resulting polymer polyol, according to the claims, should have a relative viscosity lower than 20, determined following specific guidelines. The disclosed invention aims to provide a method for producing polymer polyols with tailored properties, suitable for various applications in industries such as coatings, adhesives, and sealants. The detailed description of the macroinitiator formula, preparation process, and polymer polyol characteristics offers valuable insights for researchers and manufacturers looking to innovate in the field of polyurethane chemistry and materials science.
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