Wanhua Chemical applied for a patent for halogen-free flame-retardant polyester polyol. The patented technology can improve the flame-retardant performance.

News on December 13, 2023, according to the announcement of the State Intellectual Property Office, Wanhua Chemical Group Co., Ltd. applied for a patent titled “A halogen-free flame-retardant polyester polyol, preparation method and its “Application in Rigid Polyurethane Foam”, publication number CN117209734A, application date is September 2023. The patent abstract shows that the present invention…