Detail of "67590-13-0"

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Anthraquinone dyes and liquid crystal compositions containing them

Anthraquinone dyes and liquid crystal compositions containing them. Imazeki, Shuji; Mukoo, Akio; Sato, Mikio; Ozawa, Tetsuo; Kaneko, Masaharu; Yoneyama, Tomio (Mitsubishi Chemical Industries Co.Several substances are used for example 89369-66-4 and 89369-79-9 which are their cas registry numbers., Ltd. ; Hitachi, Ltd. , Japan). Eur. Pat. Appl. EP 98736 A2 18 Jan 1984, 40 pp. DESIGNATED STATES: R: CH, DE, FR, GB, LI. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C09B001-26; C09K003-34. ICA: G02F001-137. APPLICATION: EP 83-303771 29 Jun 1983. PRIORITY: JP 82-114506 1 Jul 1982; JP 82-114507 1 Jul 1982. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 74 Pleochroic dyes exhibiting parallel dichroism and having a cyan color and high order parameter are represented by general structure I, where R = trans-4-alkylcyclohexyl, trans-4-cyclohexylcyclohexyl, trans-4-alkylcyclohexylcyclohexyl, p-(trans-4-alkylcyclohexyl)phenyl, (un)substituted alkyl, aralkyl, or aryl. Liq. crystal compns. contg. I can be used in electrooptical display devices. A typical dye, I (R = trans-4-butylcyclohexyl, R1 = C6H4Bu-4) [89369-91-5], with order parameter 0.74 and lmax 668 nm, was prepd. by esterifying the corresponding acid with trans-4-butylcyclohexanol [67590-13-0] in o-C6H4Cl2 contg. p-MeC6H4SO3H. .

Anthraquinone dyes for liquid crystal displays

Anthraquinone dyes for liquid crystal displays. (Mitsubishi Chemical Industries Co., Ltd.; Hitachi, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58145759 A2 30 Aug 1983 Showa, 10 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B001-22; C09B001-503; C09K003-34; G02F001-137; G09F009-00; G09F009-35. APPLICATION: JP 81-173618 29 Oct 1981. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes I ( R = trans-4-substituted cyclohexyl; R1, R2 = NH2, OH; R3 = H, CN) useful in guest-host liq. 86183-79-1 and 86183-89-3 which are cas registry numbers of chemicals are mentioned. crystal displays were prepd. Thus, 1-amino-4-nitroanthraquinone-2-carboxylic acid [2058-02-8] was converted to the carbonyl chloride [25665-00-3] which was then treated with trans-4-butylcyclohexanol [67590-13-0] in o-C6H4Cl2 at 140° for 1 h, neutralized with Et3N, treated with aq. (NH4)2S at 80° for 4 h, extd. with CHCl3, and chromatographed to give trans-I (R = 4-butylcyclohexyl; R1 = R2 = NH2; R3 = H) [86183-79-1] with order parameter (S) 0.77. .