news on november 26, 2023, according to the announcement of the state intellectual property office, shandong yinuowei polyurethane co., ltd. applied for a project called "a low-temperature and stain-resistant polyurethane sole resin and its preparation "methods and applications", publication number cn117106154a, application date is october 2023.
the patent abstract shows that the present invention discloses a low-temperature and stain-resistant polyurethane shoe sole resin and its preparation method and application, which belongs to the technical field of polyurethane resin. the technical solution is: composed of a component and b component, wherein: a component consists of polyester polyol, hydroxyl-terminated siloxane, polyester polymer polyol, chain extender, foaming agent, catalyst, hair it is composed of foaming agent. component b is composed of polyester polyol, polyether polyol, hydroxyl-terminated siloxane, isocyanate and phosphoric acid. the mass ratio of component a to component b is 100:(65-95). the invention introduces a siloxane structure into the polyurethane system, so that the shoe sole has the performance of low temperature resistance and dirt resistance.
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