公开(公告)号：WO1997023869A1

公开(公告)日：1997-07-03

申请号：PCT/US1996020124

申请日：1996-12-17

Applicant: IMATION CORP.

Inventor： IMATION CORP. ,  ARUDI, Ravindra, L. ,  KUMAR, Ramesh, C.

IPC: G11B05/702

CPC classification number: G11B5/7022 ,  G11B5/7021 ,  G11B5/7023 ,  G11B5/7026 ,  G11B5/7028

Abstract: The present invention provides magnetic recording media comprising a magnetic layer and optionally a backside coating provided on a substrate. At least one of the magnetic layer and the optional backside coating comprises a polymeric binder, wherein the polymeric binder is an electron beam radiation cross-linked matrix of ingredients comprising a binder polymer component and a polymeric radiation cross-linking agent. The polymeric radiation cross-linking agent comprises a plurality of (meth)acrylate-functional chain segments of formula (I), wherein B is a segment of the polymer backbone, X is a single bond or a divalent organic linking group, n has a value in the range from 2 to 6, and R is H or -CH3. The polymeric radiation cross-linking agent has a molecular weight of at least 4000 and has sufficiently high molecular flexibility to effectively cross-link the polymeric binder upon exposure of the polymeric radiation cross-linking agent to electron beam radiation.

Abstract translation: 本发明提供磁性记录介质，其包括磁性层和任选地设置在基底上的背面涂层。 磁性层和任选的背面涂层中的至少一个包括聚合物粘合剂，其中聚合物粘合剂是包含粘合剂聚合物组分和聚合物辐射交联剂的成分的电子束辐射交联基质。 聚合物辐射交联剂包括多个式（I）的（甲基）丙烯酸酯官能链段，其中B 1是聚合物主链的一部分，X 1是单键或二价有机 连接基团，n具有2至6的范围内的值，R 9为H或-CH 3。 聚合物辐射交联剂的分子量至少为4000，并且具有足够高的分子柔性，以便在将聚合物辐射交联剂暴露于电子束辐射时有效地将聚合物粘合剂交联。