公开(公告)号：US06521702B1

公开(公告)日：2003-02-18

申请号：US09716741

申请日：2000-11-20

申请人： Jan Weikard ,  Erhard Lühmann ,  Dieter Erdmann ,  Wolfgang Fischer ,  Wolfgang Kremer

发明人： Jan Weikard ,  Erhard Lühmann ,  Dieter Erdmann ,  Wolfgang Fischer ,  Wolfgang Kremer

IPC分类号： C08J303

CPC分类号： C08G18/673 ,  C08G18/0823 ,  C08G18/6725 ,  C08G18/68 ,  C09D175/16 ,  Y10T428/31551 ,  Y10T428/31591

摘要： The present invention relates to a radiation-curable, aqueous polyurethane emulsion which is prepared by I) reacting A) 40 to 90 wt. % of an isocyanate-reactive component that contains a polyester acrylate containing hydroxyl groups and having an OH content of 40 to 200 mg KOH/g and optionally other isocyanate-reactive compounds other than B) and B) 0.5 to 20 wt. % of one or more monofunctional and/or difunctional isocyanate-reactive compounds that contain cationic or anionic groups, potential cationic or anionic or hydrophilic ether groups, with C) 10 to 50 wt. % of one or more diisocyanates and/or polyisocyanates, II) optionally converting any potential cationic or anionic groups into cationic or anionic groups by salt formation and III) forming a dispersion of the reaction product of A), B) and C) in water and reacting it with D) 0.1 to 10 wt. % of one or more diamines and/or polyamines, wherein the wt. % percentages of (A) to (D) add up to 100%, and the equivalent ratio of the sum of the isocyanate-reactive groups in (A) and (B) to the isocyanate groups in (C) is 0.8:1 to 1.25:1 and the reaction of components (A) and (B) with (C) is carried out such that 65 to 95% of the isocyanate groups in (C) react with the isocyanate-reactive groups of (A) and (B). The present invention also relates to a process of making these polyurethane emulsions and to substrates coated with the polyurethane emulsions.

摘要翻译： 本发明涉及可辐射固化的水性聚氨酯乳液，其通过以下方法制备：I）将40至90重量％ ％的异氰酸酯反应性组分，其含有含羟基并且OH含量为40至200mg KOH / g的聚酯丙烯酸酯和任选的除B）和B）外的其它异氰酸酯反应性化合物，和B）0.5至20wt。 含有阳离子或阴离子基团的潜在阳离子或阴离子或亲水醚基团的一种或多种单官能和/或二官能异氰酸酯反应性化合物的％，C）10至50wt。 ％的一种或多种二异氰酸酯和/或多异氰酸酯，II）任选地通过盐形成将任何潜在的阳离子或阴离子基团转化为阳离子或阴离子基团; III）在水中形成A），B）和C）的反应产物的分散体，以及 与D）反应0.1〜10重量％ ％的一种或多种二胺和/或多胺，其中wt。 （A）至（D）的百分比百分比加起来为100％，（A）和（B）中异氰酸酯反应性基团与（C）中异氰酸酯基团之和的当量比为0.8:1至 （A）和（B）与（C）的反应进行，使得（C）中的异氰酸酯基中的65〜95％与（A）和（B）的异氰酸酯反应性基团反应 ）。 本发明还涉及制备这些聚氨酯乳液和用聚氨酯乳液涂覆的基材的方法。

公开(公告)号：US4200886A

公开(公告)日：1980-04-29

申请号：US941048

申请日：1978-09-11

申请人： Hans-Georg Musmann ,  Wolf-Dieter Erdmann

发明人： Hans-Georg Musmann ,  Wolf-Dieter Erdmann

IPC分类号： H03M7/00 ,  H04B14/06 ,  H04N7/32 ,  H04N7/34 ,  H04N19/124 ,  H04N19/50 ,  H04N19/593 ,  H04N7/12

CPC分类号： H04N19/124 ,  H04N19/50 ,  H04N19/593

摘要： A method for transmitting video signals by differential pulse code modulation employing an adjustable quantizer which can be switched between different quantizing characteristics, by deriving the control criterion for switching the quantizer from the quantized prediction errors based on picture elements adjacent the picture element being quantized, providing the quantizer with a large number of available quantizing representative levels and employing a selected number of those levels, less than the total available, for each quantizing characteristic, and, omitting those representative quantizing levels of the quantizer, for which the spacing between the representative levels is less than twice the associated maximum permissible quantizing error belonging to the respective quantized prediction errors and providing representative levels at the outer ends of the quantizing characteristic instead of the omitted levels.

摘要翻译： 一种用于通过差分脉冲编码调制来传输视频信号的方法，该调制量化器可以在不同的量化特性之间切换，通过从量化的图像元素的量化预测误差导出用于切换量化器的控制标准，提供 量化器，其具有大量可用的量化代表级别，并且对于每个量化特征采用小于总可用数的那些级别的选定数量，并且省略量化器的代表量化级别，代表级别之间的间隔 小于属于相应量化预测误差的相关联的最大允许量化误差的两倍，并且在量化特性的外端提供代表性电平而不是省略的电平。