会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US4621008A
    • 1986-11-04
    • US662051
    • 1984-10-18
    • Yasufumi TakasugiOsamu KohmotoHiroshi SugiharaMasaharu Nishimatsu
    • Yasufumi TakasugiOsamu KohmotoHiroshi SugiharaMasaharu Nishimatsu
    • C09D5/23G11B5/725G11B5/72
    • G11B5/725Y10S428/90Y10T428/24975Y10T428/265Y10T428/2969
    • A magnetic recording medium for use in video and other applications is presented which comprises a substrate, a continuous thin magnetic layer of cobalt and at least one selected from nickel, chromium, and oxygen, preferably obliquely evaporated on the substrate, and a topcoat formed over the magnetic layer and made of a phosphate compound having the formula: ##STR1## where R is selected from the group consisting of substituted or unsubstituted alkyl radicals having 10 to 22 carbon atoms which may be saturated or have an unsaturated double bond in their backbone, and substituted or unsubstituted aryl, alkaryl, aralkyl and alkylarylalkyl radicals having 6 to 20 carbon atoms, andY.sup.1 and Y.sup.2 may be the same or different and selected from the group consisting of hydrogen atom, cations, and substituted or unsubstituted alkyl and aryl radicals, the alkyl radicals being saturated or having an unsaturated double bond in their backbone, and Y.sup.1 and Y.sup.2 may together represent a divalent cation.
    • 提出了用于视频和其他应用的磁记录介质,其包括基底,钴的连续薄磁性层和选自镍,铬和氧中的至少一种,优选在基底上倾斜蒸发,并形成在顶部 该磁性层由具有下式的磷酸酯化合物制成:其中R选自取代或未取代的具有10-22个碳原子的烷基,其可以在其主链中饱和或具有不饱和双键, 和具有6至20个碳原子的取代或未取代的芳基,烷芳基,芳烷基和烷芳基烷基,Y 1和Y 2可以相同或不同,并且选自氢原子,阳离子和取代或未取代的烷基和芳基, 烷基在其主链中饱和或具有不饱和双键,Y1和Y2可以一起代表二价阳离子。