HELLA GmbH & Co has patented a novel polycarbonate polyol with unique properties for polyurethane elastomers. The polyol has an OH number of 40 to 80 mg KOH/g and specific functionality, offering improved stability and mechanical properties for demanding applications. GlobalData’s report on HELLA GmbH & Co 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 HELLA GmbH & Co, was a key innovation area identified from patents. HELLA GmbH & Co's grant share as of February 2024 was 49%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11926701B2) discloses a polycarbonate polyol with specific characteristics, including an OH number of 40 to 80 mg KOH/g and a mean functionality of 1.9 to 2.2. The polyol is obtained through a reaction involving various components such as a,w-alkanediol, polytetrahydrofuran, diethylene glycol, and carbonyl components like diaryl carbonates or COCl2. The patent also details the process for preparing this polycarbonate polyol, involving a two-stage process with specific conditions and ratios of components to achieve the desired properties.
Furthermore, the patent covers the use of the polycarbonate polyol in creating NCO prepolymers with specific NCO content, which can then be utilized in producing polyurethane elastomers or polyurethaneurea elastomers. These elastomers find applications in various technical components like roll coatings, shoe press blankets, seals, conveyor belts, and more. The patent also outlines methods for preparing roll coating materials or shoe press blankets using the polyurethane elastomers, as well as the composition of the elastomers obtained by reacting the NCO prepolymers with aliphatic diols or aromatic diaminic chain extenders. Overall, the patent provides a detailed insight into the composition, preparation, and applications of the polycarbonate polyol and its derivatives in the field of polyurethane elastomers.
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