公开(公告)号：US4454282A

公开(公告)日：1984-06-12

申请号：US477196

申请日：1983-03-21

申请人： Richard L. Bradshaw ,  Samuel J. Falcone ,  Alexander Simonetti

发明人： Richard L. Bradshaw ,  Samuel J. Falcone ,  Alexander Simonetti

IPC分类号： G11B5/708 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/706 ,  G11B5/712 ,  G11B5/842 ,  B32B5/16 ,  C08L75/04 ,  C09D11/00

CPC分类号： G11B5/70636 ,  Y10S428/90

摘要： A stable, non-agglomerating, magnetic recording coating ink, for use in coating a flexible non-magnetic substrate, is made by a two-step process which first mixes finely divided chromium dioxide particles with water and a polymeric surfactant/dispersant agent which has as its major functionality in a side chain, carboxylic acid, as a free acid, ester or amide thereof, and of a relatively low number average molecular weight in the range 500 to 20,000. Only after the particles are dispersed in this slurry is water-based polyurethane binder added to the slurry, as the second step in the process, to form the final ink.

摘要翻译： 用于涂覆柔性非磁性基材的稳定的非附聚磁记录涂料油墨是通过两步法制备的，该方法首先将细碎的二氧化铬颗粒与水和聚合物表面活性剂/分散剂混合， 作为其侧链中的主要官能团，羧酸作为游离酸，其酯或酰胺，并且具有在500至20,000范围内的相对低的数均分子量。 只有在颗粒分散在该浆料中之后，将水性聚氨酯粘合剂加入到浆料中，作为该方法的第二步，形成最后的油墨。