Detail of "95235-30-6"

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Method for preparation of 4-hydroxy-4'-isopropoxydiphenylsulfone: Method for preparation of 4-hydroxy-4'-isopropoxydiphenylsulfone. Baek, Seong In; Kim, Ji Yeong (Kolon Ind. Inc., S. Korea). Repub. Korean Kongkae Taeho Kongbo KR 2002022157 A 27 Mar 2002, No pp. given (Korean). (Korea, Republic Of). CODEN: KRXXA7. CLASS: ICM: C07C315-04. APPLICATION: KR 2000-54794 19 Sep 2000. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) A method for prepg. 75-26-3 and 95235-30-6 are cas registry numbers of chemicals which are used as reagents here. 4-hydroxy-4'-isopropoxy di-Ph sulfone represented by the formula 1 is provided to employ cheap reactants and to simplify the reaction process, thereby improving the industrial use. The method comprises the step of debenzylating the compd. represented by the formula 2 by using an alkali metal to obtain 4-hydroxy-4-isopropoxy di-Ph sulfone represented by the formula 1, wherein R is a nitro group or a halogen atom. The compd. of the formula 2 is obtained by reacting the compd. of the formula 3 with 2-bromopropane, wherein R is a nitro group or a halogen atom. The debenzylation is carried out by using an alkali metal and a solvent consisting of an alc. of C1-C4 and water, the alkali metal is added in the form of NaOH, KOH or Ca(OH)2, and 1-2 equiv of an alkali metal is added. .

Thermal recording material with near-IR absorbability: Thermal recording material with near-IR absorbability. Tsugawa, Hiroaki (Nippon Kayaku Kk, Japan). Jpn. Kokai Tokkyo Koho JP 08300826 A2 19 Nov 1996 Heisei, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: B41M005-30. 95235-30-6 and 80-09-1 which are cas registry numbers are also used here. APPLICATION: JP 1995-137531 12 May 1995. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 25 The material includes a thermally coloring layer contg. dyes and developers and coloring in an integrated 2-dimensional code pattern, where the coloring region has near-IR absorbability. Preferably, the near-IR absorbability may be provided with a coloring compd. I (R1-3 = H, C1-5 alkyl; X1-4 = halo). The material shows high reliability and security, useful for POS systems. .