发明授权
US5266408A Magnetic recording media 失效
磁记录媒体

Magnetic recording media
摘要:
Magnetic recording media consist of a nonmagnetic substrate and one or more magnetizable layers bonded thereon and based on a polyurethane binder, the binder consisting of not less than 50% by weight of a branched polyurethane elastomer having sulfonate groups and possessing urea groups at the chain ends.
公开/授权文献
信息查询
0/0