申请人:Mitsui Toatsu Chemicals, Incorporated
公开号:US04997874A1
公开(公告)日:1991-03-05
An aqueous suspension of a multivalent-metal-modified salicylic acid resin, which is suitable for use in the production of color-developing sheets for pressure-sensitive recording paper sheets, contains a specific multivalent-metal-modified salicylic acid resin at the first-mentioned resin. Fine particles of the specific multivalent-metal-modified salicylic acid is dispersed in an aqueous solution of a dispersant composed of at least one compound selected from the group consisting of: (a) water-soluble anionic high-molecular compounds composed of polyvinyl alcohol derivatives containing sulfonic acid groups in their molecules, and salts thereof, (b) acrylamide-modified polyvinyl alcohols, and (c) water-soluble anionic high-molecular compounds composed of polymers or copolymers comprising particular styrenesulfonic acid derivatives as their essential components. The aqueous dispersion is prepared by finely grinding the specific multivalent-metal-modified salicylic acid in the aqueous solution of the dispersant.
一种多价金属改性水杨酸树脂的水性悬浮液,适用于生产压敏记录纸张的色发展片,其中包含第一提到的特定多价金属改性水杨酸树脂。特定多价金属改性水杨酸的细微粒子分散在由至少一种化合物组成的分散剂的水溶液中,所述化合物选自以下组:(a)由聚乙烯醇衍生物组成的水溶性阴离子高分子化合物,其分子中含有磺酸基团及其盐,(b)丙烯酰胺改性聚乙烯醇,以及(c)由特定苯乙烯磺酸衍生物组成的高分子化合物或共聚物,作为其基本组分。水性分散液是通过在分散剂的水溶液中细磨特定多价金属改性水杨酸制备的。