Process for the preparation of polymerizable polyurethane elastomers
    1.
    发明授权
    Process for the preparation of polymerizable polyurethane elastomers 失效
    制备可聚合聚氨酯弹性体的方法

    公开(公告)号:US4334034A

    公开(公告)日:1982-06-08

    申请号:US231836

    申请日:1981-02-05

    CPC分类号: C08G18/6705 C08G18/675

    摘要: A process for the preparation of polymerizable, primarily linear thermoplastic polyurethane elastomers with acrylate side groups comprising reacting an organic polyisocyanate with a mixture of(a) an acrylate diol having a molecular weight of 146 to 3000,(b) an organic polyhydroxyl compound other than those of paragraph (a) having a molecular weight between 400 and 5000, and(c) a chain extender selected from the group consisting of diols, diamines, aminoalcohols, and triols, having molecular weights between 61 and 400, water, and mixtures thereofwherein the ratio of isocyanate to active hydrogen containing groups is from 0.8:1 to 1.2:1 and wherein 1.4 to 1.8 moles of organic polyisocyante, 0 to 15 moles of component (c) and 0.3 to 6 moles of component (a) are used per mole of component (b). The polymerizable polyurethane elastomers may be used for the manufacture of molded parts, laminates, adhesives, coatings, magnetic tapes, and other articles.

    摘要翻译: 一种制备具有丙烯酸酯侧基的可聚合的主要线性的热塑性聚氨酯弹性体的方法,包括使有机多异氰酸酯与(a)分子量为146至3000的丙烯酸酯二醇和(b)有机多羟基化合物的混合物 段落(a)分子量在400和5000之间的那些,和(c)分子量在61和400之间的选自二醇,二胺,氨基醇和三醇的增链剂,水及其混合物 其中异氰酸酯与含活性氢的基团的比例为0.8:1至1.2:1,并且其中使用1.4至1.8摩尔有机聚异氰酸酯,0至15摩尔的组分(c)和0.3至6摩尔的组分(a) 每摩尔组分(b)。 可聚合的聚氨酯弹性体可用于制造模制件,层压材料,粘合剂,涂料,磁带和其它制品。

    Process of making a magnetic recording media
    3.
    发明授权
    Process of making a magnetic recording media 失效
    制作磁记录媒体的过程

    公开(公告)号:US4310565A

    公开(公告)日:1982-01-12

    申请号:US150181

    申请日:1980-05-15

    CPC分类号: G11B5/7021

    摘要: A process for the manufacture of magnetic recording media, comprising a non-magnetic base and, applied thereto, one or more magnetizable layers, consisting of an anisotropic magnetic material finely dispersed in an organic binder, wherein the binder contains at least 40% of an aqueous ionomeric polyurethane dispersion which at 50.degree. C. forms films having a modulus of elasticity of from 50 to 700 N/mm.sup.2 and a DIN No. 53,157 pendulum hardness of from 20 to 110 s, the corresponding values of the modulus and hardness at room temperature being more than 3.5 times higher.

    摘要翻译: 一种用于制造磁记录介质的方法,包括非磁性基底,并施加于其上,由可分散在有机粘合剂中的各向异性磁性材料组成的一个或多个可磁化层,其中所述粘合剂含有至少40%的 水性离聚物聚氨酯分散体,其在50℃下形成弹性模量为50-700N / mm2的薄膜和DIN编号53,157摆锤硬度为20至110秒,相应的室温模量和硬度值 温度高出3.5倍以上。

    Magnetic recording media
    8.
    发明授权
    Magnetic recording media 失效
    磁记录媒体

    公开(公告)号:US4357378A

    公开(公告)日:1982-11-02

    申请号:US234708

    申请日:1981-02-17

    IPC分类号: C09D5/23 G11B5/702 B32B3/02

    摘要: The invention relates to magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment and a special binder mixture. This binder mixture consists essentially of 20 to 90 percent by weight of an elastomeric polyurethane which is soluble in a volatile organic solvent, is practically free of isocyanate groups and has been obtained from a linear, aliphatic polyester or polyether and a diisocyanate of 6 to 24 carbon atoms, and of 10 to 80 percent by weight of a vinyl chloride copolymer which contains 50 to 90 percent by weight of vinyl chloride units and 10 to 50 percent by weight of units of one or more diesters of maleic acid with an alcohol of 1 to 3 carbon atoms, or of the reaction product of this binder mixture with a polyisocyanate of 6 to 50 carbon atoms. Magnetic coatings containing such a binder mixture are distinguished by improved surface hardness coupled with improved orientability of the magnetic particles, as a result of which such recording media are particularly suitable for modern video- and audio-recording instruments.

    摘要翻译: 本发明涉及包含非磁性基底的磁记录介质,并且在其上施加基于细分磁性颜料和特殊粘合剂混合物的牢固粘附的磁性涂层。 该粘合剂混合物基本上由20至90重量%的可溶于挥发性有机溶剂的弹性体聚氨酯组成,实际上不含异氰酸酯基团,并且由线性脂族聚酯或聚醚和6至24的二异氰酸酯获得 和10至80重量%的氯乙烯共聚物,其含有50至90重量%的氯乙烯单元和10至50重量%的一种或多种马来酸二醇与醇的共聚物1 或者该粘合剂混合物与6至50个碳原子的多异氰酸酯的反应产物。 含有这种粘合剂混合物的磁性涂层的特征在于改进的表面硬度以及磁性颗粒的改进的取向性,结果这种记录介质特别适用于现代的视频和音频记录仪器。

    Method and apparatus for initiating a weighing operation
    10.
    发明授权
    Method and apparatus for initiating a weighing operation 失效
    用于启动称重操作的方法和装置

    公开(公告)号:US5567918A

    公开(公告)日:1996-10-22

    申请号:US200439

    申请日:1994-02-23

    IPC分类号: G01G23/37 G01G19/22 G01G19/52

    CPC分类号: G01G23/3707

    摘要: A method and apparatus for initiating a weighing scale operation, including a quick start program operable either by the tare key of the weighing scale or by the application of a load to the load-receiving member of the scale to by-pass a start-up test program, and to connect directly a weighing program to a display, thereby to avoid the display and confirmation of a start-up test program. Upon the reenergization of the signal processing unit following a power failure, the test program is automatically displayed on the display device.

    摘要翻译: 一种用于启动称重操作的方法和装置,包括可通过称重秤的皮重键操作的快速启动程序,或者通过向秤的负载接收构件施加负载来旁路启动 测试程序,并将称重程序直接连接到显示器,从而避免启动测试程序的显示和确认。 在电源故障后信号处理单元重新通电时,测试程序自动显示在显示设备上。