Method for preparing rosin-based IPDI (isophorone diisocyanate)-type polyurethane prepolymers  

Inventor(s)（发明人）: YU CAILI; BIAN FENG; ZHANG FAAI; XU JIANBEN

Priority number(s)（专利检索号）: CN20161138982 20160313

Abstract of  CN105646822 (A)：

The invention discloses a method for preparing rosin-based IPDI (isophorone diisocyanate)-type polyurethane prepolymers. The method includes carrying out addition reaction by the aid of rosin and acrylic acid to obtain acrylic acid rosin with two carboxyl groups; carrying out reaction by the aid of the acrylic acid rosin and glycidyl methacrylate to obtain rosin-based polyhydric alcohol; carrying out chemical reaction by the aid of the rosin-based polyhydric alcohol and isophorone diisocyanate (IPDI) to obtain the rosin-based IPDI-type polyurethane prepolymers. The method has the obvious advantages that the rosin-based IPDI-type polyurethane prepolymers are made of the rosin which is a natural renewable resource, and the reaction is carried out on the rosin and a series of substances such as the acrylic acid, so that the rosin-based IPDI-type polyurethane prepolymers can be obtained, the rosin is wide in application, and the rosin-based IPDI-type polyurethane prepolymers hopefully have an excellent application prospect in the fields of paint, adhesive and the like.