Method for manufacturing non-toxic polyurethane and Non-toxic polyurethane and Method for manufacturing non-toxic polyurethane O-ring

摘要

The present invention is an invention for a non-toxic polyurethane manufacturing method, non-toxic polyurethane, non-toxic polyurethane O-ring manufacturing method. Specifically, the non-toxic polyurethane manufacturing method includes a polyol, a crosslinking agent, a toner and a curing agent mixed in a bath (S10); After the curing agent preparation step, a heating step of heating the curing agent (S12); Polymer preparation step (S20) mixed with an antifoaming agent and a tin-based ester catalyst; After the polymer preparation step, a preheating step of heating the polymer (S22); After the heating step and the preheating step, the polymerization step of polymerizing the curing agent and the polymer (S30); consists of the steps of.