公开(公告)号：JPH08165264A

公开(公告)日：1996-06-25

申请号：JP30877994

申请日：1994-12-13

Applicant: TOSOH CORP

Inventor： KOBASA MASAHIRO ,  SAKKA HIDEO

IPC: C07C41/16 ,  C07C43/225 ,  C08K5/06 ,  C09K21/08

Abstract: PURPOSE: To provide the subject new compound excellent in thermal coloration- resistant stability and useful as a flame retardant for synthetic resins. CONSTITUTION: This new compound, 2,2-Bis-(3,5-dibromo-4-n-propoxyphenyl) propane is obtained by reacting (A) 2,2-bis-(3,5-dibromo-4-hydroxyphenyl) propane with (B) a n-propyl halide in the presence of a hydrogen halide-removing reagent. The component B includes n-propyl chloride and n-propyl bromide and is preferably used in an amount of 2 molar times that of the component A. The new compound has a bromine content of 50wt.%, a melting point of 82-83 deg.C, and a a 50wt.% reduction temperature of 272 deg.C with a thermobalance as a thermal stability index. The new compound is preferably added in an amount of 2-40 pts. per 100 pts. of the resin.

公开(公告)号：JPH07165634A

公开(公告)日：1995-06-27

申请号：JP30794893

申请日：1993-12-08

Applicant: TOSOH CORP

Inventor： TAKASU YASUHITO ,  SAKKA HIDEO

IPC: C07C17/08 ,  C07C17/38 ,  C07C17/395 ,  C07C17/42 ,  C07C22/04

Abstract: PURPOSE:To provide a simple purification process for getting beta- bromoethylbenzene having high purity in high yield. CONSTITUTION:Crude beta-bromoethylbenzene produced by the reaction of styrene with hydrogen bromide is treated with iron or zinc oxide in a single solvent or a mixed solvent and the by-product is removed from the treated product.

公开(公告)号：JPH06184017A

公开(公告)日：1994-07-05

申请号：JP34031192

申请日：1992-12-21

Applicant: TOSOH CORP

Inventor： SAKKA HIDEO ,  TAKASU YASUHITO

IPC: B01J20/08 ,  C07C17/08 ,  C07C17/38 ,  C07C17/389 ,  C07C22/04

Abstract: PURPOSE:To provide a simple process for removing alpha-bromoethylbenzene and other by-products from beta-bromoethylbenzene. CONSTITUTION:beta-Bromoethylbenzene produced by reacting styrene with hydrogen bromide in the presence of a radical initiator is purified with an activated alumina having acidity or basicity.

公开(公告)号：JPH04270236A

公开(公告)日：1992-09-25

申请号：JP5307791

申请日：1991-02-26

Applicant: TOSOH CORP

Inventor： SAKKA HIDEO ,  EGUCHI HISAO

IPC: C07C41/36 ,  C07C41/22 ,  C07C41/34 ,  C07C43/225

Abstract: PURPOSE:To separate and recover bis[3,5-dibromo-4-dibromopropoxy) phenyl]propane as powder useful as flame retardant from a solution obtained by production process thereof. CONSTITUTION:A solution of bis[3,5-dibromo-4-2,3-dibromopropoxy) phenyl]propane obtained in a production process therefor is dripped in hot water containing a polyoxyalkylene sorbitan fatty acid ester, and bis[3,5- dibromo-4-2,3-dibromopropoxy)phenyl]propane is recovered as powder dispersed into water while simultaneously distilling away a solvent.

公开(公告)号：JPH03153662A

公开(公告)日：1991-07-01

申请号：JP29249789

申请日：1989-11-13

Applicant: TOSOH CORP

Inventor： SAKKA HIDEO ,  SHIMIZU SADAMI ,  EGUCHI HISAO ,  KUBO MASAJI

IPC: B01J23/04 ,  B01J27/232 ,  C07B61/00 ,  C07C315/04 ,  C07C317/22

Abstract: PURPOSE:To produce the high-purity title compound in high yield without using an oxidizing agent by adding a certain amount of bromine and inorganic metal base to bis(4-hydroxyphenyl)solfone to carry out reaction when bis(4- hydroxyphenyl)sulfone is brominated in a mixed solvent of water and alcohol. CONSTITUTION:When bis(4-hydroxyphenyl)sulfone (hereinafter referred to as BPS) expressed by formula I is brominated with bromine, the reaction is carried out by adding bromine of 4.0-5.0mol and inorganic metal salt of 2.0-4.0 gram equivalent based on 1mol BPS to BPS to provide the bis(4-hydroxy-3,5- dibromophenyl)sulfone (hereinafter referred to as TBS) expressed by formula II. The reaction is industrially advantageous without requiring addition of an oxidizing agent and high purity and high yield is attainable in a short time. TBS is utilized as a flameretardant and raw material for flame-retardant of polyolefin-resin, etc., without special purification process.

公开(公告)号：JP2007238480A

公开(公告)日：2007-09-20

申请号：JP2006060856

申请日：2006-03-07

Applicant: Tosoh Corp ,  東ソー株式会社

Inventor： SAKKA HIDEO ,  KAGAWA TAKUMI

IPC: C07D207/26 ,  B01J31/02 ,  B01J31/26 ,  B01J37/04 ,  B01J37/08 ,  C07B53/00 ,  C07B61/00 ,  C07C29/143 ,  C07C33/22 ,  C07C35/36

CPC classification number: Y02P20/52

Abstract: PROBLEM TO BE SOLVED: To provide a method for stably preparing optically active alcohols with high optical purity, by establishing and standardizing a method for analyzing the purity of an industrially useful, optically active lactam alcohol derivative. SOLUTION: The optically active lactam alcohol derivative of formula (1) (wherein R 1 and R 2 are each a hydrogen atom, a methyl group, an ethyl group, an alkyl group, a methoxy group, an ethoxy group, an alkoxy group, a phenyl group, a substituted phenyl group, a trifluoromethyl group or a halogen atom; and m and n are each an integer of 0-5) having purity of 98% or above determined by an HPLC analysis is prepared and used in an asymmetric reduction. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 待解决的问题：为了提供稳定地制备光学纯度高的光学活性醇的方法，通过建立和标准化用于分析工业上有用的光学活性的内酰胺醇衍生物的纯度的方法。 解决方案：式（1）的光学活性内酰胺醇衍生物（其中R SB 1和R SB 2各自为氢原子，甲基，乙基 烷基，甲氧基，乙氧基，烷氧基，苯基，取代的苯基，三氟甲基或卤素原子; m和n各自为0-5的整数），其纯度为 通过HPLC分析测定的98％或以上制备并用于不对称还原。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2001031408A

公开(公告)日：2001-02-06

申请号：JP20518799

申请日：1999-07-19

Applicant: TOSOH CORP

Inventor： SAKKA HIDEO

IPC: C01B25/24

Abstract: PROBLEM TO BE SOLVED: To obtain a flame retardant having high flame retardance by compounding zinc ethylenediamine phosphate with magnesium. SOLUTION: Zinc magnesium ethylenediamine phosphate is expressed by the formula [(a) is 0.01 to 0.8]. The compound is obtained by mixing an aqueous solution of ethylenediamine with the aqueous solution of zinc magnesium phosphate obtained by dissolving zinc and magnesium in phosphoric acid. Therein, the magnesium/zinc molar ratio, the phosphoric acid/(zinc + magnesium) molar ratio, and the ethylenediamine /(zinc + magnesium) are preferably 0.01 to 4, 1 to 2, and 0.5 to 1.0, respectively. The mixing time is preferably several minutes to several hours, and the mixing temperature is desirably 0 to 50 deg.C. The zinc magnesium ethylenediamine phosphate is crystallized at pH 3 to 8. After the pH is adjusted, the solution is stirred at 0 to 50 deg.C for 3 to 24 hours to age the crystals, which are washed, subjected to a solid liquid separation treatment, and then dried. The obtained flame retardant preferably in an amount of 150 to 300 pts.wt. is compounded with 100 pts.wt. of a resin to obtain the flame- retardant resin.

公开(公告)号：JP2001011462A

公开(公告)日：2001-01-16

申请号：JP18521699

申请日：1999-06-30

Applicant: TOSOH CORP

Inventor： KONDO NORIHISA ,  SAKKA HIDEO

IPC: C09K21/12 ,  C07F3/06 ,  C07F19/00 ,  C08K3/02 ,  C08K3/32 ,  C08K5/3432 ,  C08K5/3492 ,  C08L101/00 ,  C08L101/16 ,  C09K21/02 ,  C09K21/04 ,  C09K21/10

Abstract: PROBLEM TO BE SOLVED: To impart a high degree of flame retardancy by compounding, in a resin, a piperazine skeleton-bearing amine-containing zinc phosphate. SOLUTION: The flame retardant consists of a piperazine skeleton-bearing amine-containing zinc phosphate of the general formula: [A][ZnaPbbOcHd] (wherein a is an integer of 1 to 2; b is an integer of 1 to 3; c is an integer of 4 to 12; d is an integer of 1 to 10; and A represents an amine having a piperazine skeleton). The piperazine skeleton-bearing amine A preferably includes, for example, piperazine, 2-methylpiperazine, N-methylpiperazine or the like. This flame retardant is prepared by mixing a zinc phosphate aqueous solution having a ratio by mole of phosphoric acid and zinc of 1.0 to 3.0 and an aqueous solution of a piperazine skeleton-bearing amine in an amount sufficient to provide a ratio by mole of the amine and zinc of 0.5 to 1.2, followed by adjusting the pH to 3 to 8 and aging. Subsequently, the mixture is subjected to solid-liquid separation, washing and drying. When the zinc phosphate aqueous solution and the aqueous solution of the piperazine skeleton-bearing amine are mixed, the temperature is preferably within a range of 0 to 50 deg.C.

公开(公告)号：JPH10158327A

公开(公告)日：1998-06-16

申请号：JP31665396

申请日：1996-11-27

Applicant: TOSOH CORP

Inventor： SAKKA HIDEO ,  KAGAWA TAKUMI

IPC: C08F8/20

Abstract: PROBLEM TO BE SOLVED: To obtain a brominated polystyrene in a good efficiency and in a high yield, and a white powder without a purifying process, and useful as a flame retarder, etc., by dripping a solution obtained by dissolving a polystyrene and a Lewis acid catalyst with an organic solvent, into a bromine chloride solution and reacting them. SOLUTION: This brominatied polystyrene is obtained by dripping a solution obtained by dissolving a polystyrene and preferably 0.1-20mol% (based on the charged polystyrene) one or more kinds of Lewis acid catalysts selected from a halogenated antimony, a halogenated titanium, a halogenated boron and a halogenated boron complex into a bromine chloride solution and reacting them.

公开(公告)号：JPH09227625A

公开(公告)日：1997-09-02

申请号：JP33932796

申请日：1996-12-19

Applicant: TOSOH CORP

Inventor： KAGAWA TAKUMI ,  SAKKA HIDEO

IPC: C08K3/22 ,  C08F8/20 ,  C08F12/00 ,  C08F12/08 ,  C08K3/24 ,  C08K3/26 ,  C08K3/34 ,  C08K3/40 ,  C08L101/00

Abstract: PROBLEM TO BE SOLVED: To obtain a brominated polystyrene for a flame retardant which gives a flame-retardant resin compsn. having a greatly improved processibility while retaining mechanical properties unobtainable with a conventional flame retardant by specifying the mol.wt. and to provide a flame retardant resin compsn. contg. the same. SOLUTION: This brominated polystyrene for a flame retardant has a wt. average mol.wt. of 5,000-15,000 and, when compounded with a synthetic resin, gives a flame-retardant resin compsn. Usually 100 pts.wt. synthetic resin is compounded with 5-50 pts.wt. this brominated polystyrene. A flame-retardant resin compsn. exhibiting flame-retardant properties and nondripping properties is obtd. e.g. by compounding 100 pts.wt. synthetic resin with 5-200 pts.wt. this brominated polystyrene, 5-200 pts.wt. glass fibers, 1-140 pts.wt. antimony trioxide or sodium antimonate, and 0.1-10 pts.wt. emulsion-polymn. Teflon.