公开(公告)号：US6017431A

公开(公告)日：2000-01-25

申请号：US102772

申请日：1998-06-23

申请人： David J. Augustini ,  Victor G. Corrigan ,  William D. Cook ,  Alan J. Kaylo

发明人： David J. Augustini ,  Victor G. Corrigan ,  William D. Cook ,  Alan J. Kaylo

IPC分类号： A01N33/08 ,  C09D5/44 ,  C09D201/00 ,  C09D201/02 ,  C25D13/06 ,  C25D13/10

CPC分类号： C09D5/4492

摘要： Electrodepositable coating composition bath is prepared and maintained to reduce the growth of bacteria in and around the bath. The composition has dispersed in an aqueous medium a resinous phase, said composition having a pH of at least 5, said resinous phase having basic nitrogen groups which are at least partially neutralized with an acid of the formula: ##STR1## wherein R is hydrogen or an alkyl group with one to four carbon atoms. The amount of this acid to neutralize the cationic resinous phase can be an initial amount greater than 90 of the milliequivalents of sulfamic acid based on the total milliequivalents of neutralizing acid in the bath for the electrodeposition coating of articles in the bath. Also, the bath is maintained by post addition of sulfamic acid to a level of greater than 80 weight percent of the milliequivalents of neutralizing acid when the bath has less than or greater than 90 weight percent of the milliequivalents of neutralizing acid in the bath as sulfamic acid.

摘要翻译： 制备并保持电沉积涂料组合物浴以减少浴中和周围细菌的生长。 所述组合物在水性介质中分散有树脂相，所述组合物的pH值至少为5，所述树脂相具有碱性氮基，其至少部分用下式的酸中和：其中R是氢或烷基 具有一至四个碳原子。 用于中和阳离子树脂相的酸的量可以是基于在浴中的物品的电沉积涂层的浴中的中和酸的总毫克数的大于90毫克的氨基磺酸的初始量。 此外，当浴中含有少于或大于90重量％的中和酸的90重量％时，通过将氨基磺酸酸添加至大于中等酸的毫当量的80重量％的水平来保持浴， 酸。