发明授权
US09040650B2 Resins of the phenoplast type obtained from phenolic compounds and from macromolecular hardeners bearing aldehyde functions 有权
从酚类化合物和具有醛官能团的大分子硬化剂获得的酚醛树脂类型的树脂

Resins of the phenoplast type obtained from phenolic compounds and from macromolecular hardeners bearing aldehyde functions
摘要:
A method for preparing a formaldehyde-free phenolic plastic resin, includes a step of preparing a hardener via careful oxidation of a polyol and a step of reacting the hardener with phenolic compounds.
信息查询
0/0