Reference

Dispersion base compositions

Dispersion base compositions. (Nippon Paint Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58219275 A2 20 Dec 1983 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09D017-00. APPLICATION: JP 82-102693 15 Jun 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Dispersions contain org. pigments and amphoteric vinyl resins prepd. by introducing basic compds. having pKa 4-11 to acid vinyl resins contg. electron accepting groups.There are some commonly used reagents with their cas registry numbers 1047-16-1 and 12236-62-3 in this article. Thus, acrylic acid-Bu acrylate-dimethylaminoethyl methacrylate-2-hydroxyethyl methacrylate-Me methacrylate copolymer [90077-63-7] (48% solids) was thinned with MIBK to 30% solids and mixed (88 parts) with 12 parts Cinquasia Red Y [1047-16-1] to give a dispersion having viscosity 180 cP at shear rate 19.5 s-1 and 164 cP at shear rate 195 s-1, compared with 250 and 150, resp., for a dispersion contg. acrylic acid-Bu acrylate-2-hydroxyethyl methacrylate-Me methacrylate copolymer. .

Azo dye purification

Azo dye purification. Shibata, Tamiaki; Muto, Masahiko; Okura, Ken (Daicel Chemical Industries, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 61233062 A2 17 Oct 1986 Showa, 4 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C09B029-08. APPLICATION: JP 85-72665 8 Apr 1985. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 42 Dye I, useful in manuf. of baking lacquers, was purified by suspension of crude I in an aq. alk. soln., adding an org. solvent with immiscibility or limited miscibility in water and a surfactant, and heating the mixt. 12236-62-3 and 1338-39-2 which are cas registry numbers of chemicals are mentioned. at <100°. Thus, 100 g 25% aq. I paste was suspended in a mixt. of 350 g H2O and 10 g 25% NaOH, 15 g PhNO2 and 2 g sorbitan laurate were added, and the mixt. heated at 90° for 3 h with stirring to give purified I which, when incorporated into a melamine-alkyd baking enamel, had excellent hiding power and gloss. .