水杨酸 、 Zinc benzoate 、 碳酸氢铵 反应 1.5h,
以ground, thereby obtaining 79.5 g of a zinc-benzoate-modified product of the salicylic acid resin的产率得到ZINC-benzoate
参考文献:
名称:
Production process of multivalent metal-modified salicylic acid/styrene
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.
Production process of multivalent metal-modified salicylic acid/styrene
申请人:Mitsui Toatsu Chemicals, Incorporated
公开号:US04952648A1
公开(公告)日:1990-08-28
Disclosed herein are novel multivalent metal-modified salicyclic acid resins useful as color-developing agents for pressure-sensitive copying paper. They can each be produced by causing a salicyclic acid ester and a styrene derivative to undergo a Friedel-Crafts reaction in the presence of a strong acid catalyst, hydrolyzing the resulting salicylic acid ester resin, and then reacting the thus-obtained salicyclic acid resin with a multivalent metal salt.