Hongchang Chemical s a low-VOCs alcohol water-soluble PVP modified polyurethane resin and its preparation method and application was authorized by the State Intellectual Property Office

A few days ago, Guangdong Hongchang Chemical Co., Ltd. applied for the invention patent “A low-VOCs alcohol water-soluble PVP modified polyurethane resin and its preparation method and application” authorized by the State Intellectual Property Office, patent number: ZL 202111565055.3. According to the invention, the company successfully developed the HC68 series alcohol water-soluble ink, which was…