Reference

Halogenated alkylphenolphthaleins

Halogenated alkylphenolphthaleins. Nakajima, Keiji; Nakamura, Michie (Dainichiseika Color and Chemicals Mfg. Co., Ltd., Japan). Japan. Kokai JP 53058534 26 May 1978 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B011-08. APPLICATION: JP 76-133807 9 Nov 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 79, 80 I (R, R2 = C1-3 alkyl; R1 = Br, Cl, I), pH indicators, were prepd. For example, thymolphthalein [125-20-2] in EtOH was brominated with Br to give I (R = Me, R1 = Br, R2 = Me2CH) [67607-54-9] whose aq. soln. initiates coloration (blue) at pH 8.8 and completes the coloration at pH 9.4.

Molding color sets

Molding color sets. (Kawajima, Seiji, Japan). Jpn. Kokai Tokkyo Koho JP 59112084 A2 28 Jun 1984 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: D06P005-00. APPLICATION: JP 82-222710 19 Dec 1982. DOCUMENT TYPE: Patent CA Section: 43 (Cellulose, Lignin, Paper, and Other Wood Products) Section cross-reference(s): 42, 44 Moldings contg. coloring agents (e.g., pH indicators) or coloring aids (e.g., pH regulators) are treated with media contg. coloring agents or coloring aids to develop or change colors. Thus, colorless wood, fiber, or paper dolls were coated with aq. ethylene glycol (I) and dried. A red soln. contg. EtOH 100, I 10, and phenolphthalein [77-09-8] 0.5 part, a yellow soln. contg. EtOH 100, I 10, and p-nitrophenol [100-02-7] 0.2 part, and a blue soln. contg. EtOH 100, I 10, and thymolphthalein [125-20-2] 0.5 part were mixed in ratio 3:1:2 and painted on the hair, eyes, and eyebrows. The red soln. was painted on the lips and the 3 solns. were mixed in various ratios and painted on the clothes. Colorless parts were formed when coated with a soln. contg. water 100, citric acid [77-92-9] 15, and I 10 parts.