baber/WOPTO huggingface dataset:
Patent KR-20000005023-A (KR)
Title: Illumination system comprising microprisms with blocking means
Inventor: HOU JANPU
IPC: F21V7/00
Filed: 1997-03-21
Abstract: PURPOSE: The illumination system comprising microprisms with blocking means is to recycle reflected and misdirected light rays. CONSTITUTION: A reflector (150) at the light source (112) and an array of microprisms (122) having reflective elements (160) therebetween efficiently redirect errant light rays to increase the total available light output and improve efficiency. Both specular and diffuse reflective materials may be used in combination to enhance light output.
Patent KR-20000010656-A (KR)
Title: Leadframe for the assembly of an integrated circuit in an injection mounted housing
Inventor: HAUSER CHRISTIAN
IPC: G06K19/077
Filed: 1997-06-24
Abstract: PURPOSE: A lead frame for assembly of an integrated circuit is provided to prevent a formation of a plastic flash on a contact hole by using a resilience. CONSTITUTION: The lead frame (1) comprises a resilient member (6) which can be compressed by an injection molding tool (7a, 7b) when a housing (5) is being injection molded. As a result of the resilience member (6) thus produced, a contact face (3) of a lead (2) can be pressed against an interior wall (8) of the injection moulding tool (7a, 7b). Thereby, the following advantages are offered: the formation of a plastic flash on the contact face (3) is prevented, the lead (2) is anchored in he completed housing (5). There is no need for clamping pins inside the injection moulding tool (7a, 7b).
Patent KR-20000050562-A (KR)
Inventor: HONG JUN IL
IPC: G06F3/0354
Filed: 1999-01-12
Abstract: PURPOSE: A pen input apparatus of a portable information terminal and a recognition method of the same are provided for implementing a quick pen input signal process in a portable information terminal by providing a button to a pen input apparatus which is capable of judging whether a pen input signal is a character input mode or a GUI input mode. CONSTITUTION: When a certain operation is performed in a pen input apparatus(210), a signal corresponding to the operation is detected(S300). It is judged whether a signal inputted from a mode judgement button(211) of the pen input apparatus(210) is a character input mode or a GUI operation mode(S310). In the case of the character input mode, an application for a character recognition of the portable information terminal is driven for thereby converting the position information of the pen input apparatus(210) into a character information(S320).
Patent KR-19990072838-A (KR)
Title: 공기조화기
IPC: H02P1/30
Filed: 1999-02-23
Abstract: 본 발명은 공기조화기에 관한 것으로서,전력변환장치를 구성하는 스위칭소자의 파괴를 미연에 방지함과 동시에, 기동시의 진동을 낮게 억제할 수 있는 공기조화기를 제공하는 것으로, 출력주파수가 가변의 전력변환장치를 통하여 압축기를 구동함과 동시에 미리 정해진 주파수 범위 및 시간변화율로, 전력변환장치의 출력주파수를 공조부하에 따라 변화시키는 공기조화기에 있어서, 난방운전모드에서의 기동시에 상기 주파수 범위의 최저값 보다도 소정값만큼 낮은 기동주파수로부터, 상기 시간변화율 보다도 큰 변화율로, 주파수 범위의 최저값을 향하도록 전력변환장치의 출력주파수를 제어하는 제어수단을 구비한 것을 특징으로 하는 것이다.
Patent KR-20000056634-A (KR)
Inventor: KIM DONG O
IPC: H01L21/00
Filed: 1999-02-24
Abstract: PURPOSE: A pumping system of an equipment for manufacturing a semiconductor is provided to precisely control a pumping capability in a state of high vacuum and a low vacuum, thereby decreasing the fabrication time of a semiconductor device. CONSTITUTION: A pumping system of an equipment for manufacturing a semiconductor comprises: a chamber(100); a first line(220) connected to the chamber; a first pumping unit(210) for lowering a pressure of the chamber to a first pressure value through the first line; a second line(240) connected to the chamber; a second pumping unit(230) for lowering a pressure of the chamber to a second pressure value smaller than the first pressure value when the press of the chamber approaches the first pressure value; a first pressure control unit(250) connected on the second line between the chamber and the second pumping unit, for controlling a pumping capability of the second pumping unit; a third line connected to the chamber; and a second pressure control unit(280) connected on the third line between the chamber and the first pumping unit, for controlling a pressure of the chamber to the second pressure value to a minute degree.
Patent KR-20000059549-A (KR)
Inventor: KIM HEE SUNG
IPC: A43D117/00
Filed: 1999-03-05
Abstract: PURPOSE: A shoe press and mold are provided to accomplish an improved workability and productivity while allowing shoes with a variety of designs to be formed simultaneously. CONSTITUTION: A shoe press comprises a transport line having a track shape and which moves continuously in one direction, upper and lower molds(100,200) arranged onto the transport line and which allows an upper leather(340) to be set and an outer sole to be formed, an injection unit installed in front of the transport line to have a variable position and which injects an outer sole material to the lower mold, a dry unit installed in a tunnel shape in the entire rear side of the transport line and which allows the upper leather and the outer sole to be coupled with each other, and a cleaner installed in a center portion of the transport line and which removes foreign substances or dirties existing at the upper and lower molds after the shoe product passed through the dry unit is discharged.
Patent KR-19990064481-A (KR)
Title: 온열 치료기겸 의자
Filed: 1999-03-15
Abstract: 본 발명은 온열 치료기겸 의자에 관한 것으로, 특히 다리겸 받침구(1), 시트(2), 등받이(3), 헤드레스트(5) 및 등받이 각도 조절수단(6)을 구비한 휴식 전용 의자로써의 흔들의자나, 일반 사무실에서 널리 사용되고 있는 사무용 의자 또는 이,미용실에서 사용되고 있는 의자를 구성함에 있어서, 합성수지재를 이용하여 대략 사각함체의 형상을 갖도록 사출 성형한 몸체부(70)의 전면부에 인체의 소정부위를 직접 압압할 수 있도록 수개의 압지봉(71)을 설치하고 상기 몸체부(70)내에서 압지봉(71)의 저부에는 각각 원적외선 발생용 램프(72)이 설치된 구성을 갖는 온열 치료기(7) 자체를 상기 의자의 등받이(3)에 직접 매설하되 압지봉(71)들을 등받이(3)의 외측으로 돌출되게 설치거나, 벨크로 테이프나 클립등과 같은 고정수단(73)을 구비한 벨트(74)가 일체로 설치되어 있는 온열 치료기(7)를 상기 등받이(3) 전면부에 착탈 가능하게 설치하여, 사용자가 의자에서 휴식을 취하거나 사무를 보던 중, 또는 이,미용실에서 손님의 머리를 손질하던 중 언제 어디서든 시간과 장소에 구애받지 않고 의자에서 인체의 원하는 부위를 온열 치료할 수 있도록 하므로써, 의자의 사용성을 대폭 향상시킬 수 있은 물론 사용자의 보건건강에 크게 이바지할 수 있는 것이다.
Patent KR-20000061133-A (KR)
Inventor: KIM GIL RYONG
IPC: C07K14/195
Filed: 1999-03-24
Abstract: PURPOSE: Provided is a novel antimycotic protein isolated from the medium of Aspergillus niger which is harmless to a human body and mass cultured. The protein is excellent in antimycotic activity against variable pathogenic fungi therefore, it can be used for prevention and treatment of mycotic diseases. CONSTITUTION: A novel antimycotic protein consists of 58 amino acids represented by sequence No. 1 and its molecular weight is 6.2-7.0 kDa. The antimycotic protein shows antimycotic activity against pathogenic fungi such as Aspergillus fumigatus, Apergillus flavus, Candida albicans, Trichosporon beigelii and Saccaromyces cerevisiae and vegetable pathogenic fungi such as Fusarium oxysporum, Fusarium solani, and Aspergillus niger. The novel antimycotic protein is prepared by following steps: (a)inoculating a spore of Aspergillus niger to YPD medium containing 2% of dextrose, 1% of peptone, 0.5% of yeast extract; (b)performing shaking culture at 20 to 40°C for three to five days; (c)performing Amicon ultrafiltration of supernatant of culture after removing cell line; (d)separating supernatant of culture by ion-exchange filter using CM-sepharose ion exchange column; and (e)purifying the protein.
Patent KR-19990078371-A (KR)
Title: 펄스지연회로및펄스제어회로
IPC: H03K5/135
Filed: 1999-03-29
Abstract: 지연 소자를 복수단 접속하여 이루어지는 지연 회로만을 이용하여, 복수의 입력 펄스 신호를 각각 다른 량만큼 지연시키는 것을 가능하게 하고, 회로 구성을 소규모로 함과 동시에, 고속의 클럭을 이용하는 일 없이 펄스 지연 회로를 실현한다. 
     인버터 또는 비교기에 의해 이루어지는 지연 소자를 복수단 접속하여 구성한 지연 회로(11)에 의해서 입력 클럭 신호 CK를 지연시키고, 이 지연 회로에 복수단의 지연 소자 출력 중 어느 하나를 각 셀렉트 신호에 따라 선택하여 지연 클럭 신호로서 출력하는 복수의 셀렉터(12, 13, 14)를 병렬로 접속하고, 복수의 D-FF(15, 16, 17)로 입력되는 복수의 각 펄스 신호 DATD1, DATD2, DATD3을 복수의 셀렉터로부터의 각 지연 클럭 신호 CK1, CK2, CK3에 각각 동기시키고, 입력된 복수의 펄스 신호를 각각 다른 량만큼 지연한다.
Patent KR-20000061682-A (KR)
Title: Air cleaner
Inventor: EO SEONG DAE
IPC: B01D46/00
Filed: 1999-03-30
Abstract: PURPOSE: An air cleanser is provided, which circulates internal air to purify the polluted air and introduces external air and supplies it into the interior of room, thereby to clean air and to minimize the heat loss. CONSTITUTION: The air cleaner comprises an internal air inhalation hole (4); a releasing hole (5) which releases purified air into the interior of room; a case member (3) which is provided with the internal air inhalation hole (4) and the releasing hole (5) in the front part; a ventilation pan (6) which is set in the case member (3); a motor (8) which drives the pan (6); filter members (9, 10) which are set on the air movement pathway of the case member (3) to filter the pollutant of the air inhaled from the internal air releasing hole (4); a control part (15) which controls the operation of the motor (8); an external air inhalation hole (11) which is set in back part the case member (3); wherein the case member (3) is set on the wall of window of building to allow the external air inhalation hole (11) to be exposed toward the external area and the case member (3) to be exposed toward the internal area; and a separation wall which guides internal and external air separately in the introduction step and together in the neighbour of filter member.
Patent KR-19990078433-A (KR)
IPC: H01L21/677
Filed: 1999-03-31
Abstract: 생산 라인은 원하는 세정/건조 조건에 따라 HF 세정 용액 혹은 비 HF 세정 용액을 사용하여 웨이퍼를 세정하며 이어서 웨이퍼를 건조시키는 집중 세정/건조부(14), 및 각각의 가공부(12A 내지 12E)와 집중 세정/건조부(14) 간에 웨이퍼를 이송하는 이송 시스템을 포함한다.  생산 라인(10)은 감소된 시스템 크기로 웨이퍼에 대한 세정/건조 조건을 선택하는 큰 융통성을 갖는다.
Patent KR-20000067286-A (KR)
Inventor: JUNG JIN UK
IPC: H01J29/07
Filed: 1999-04-27
Abstract: PURPOSE: A shadow mask for color cathode ray tube is provided to improve the convergence characteristics and a picture quality on the end portion of a screen. CONSTITUTION: In a color cathode ray tube, a shadow mask includes an inner apertured portion containing a large number of vertically elongated electron beam passing apertures. The planar inner apertured portion of shadow mask is defined by a horizontal X-axis and a vertical Y-axis in the plane of the apertured portion of the mask. The shadow mask(70) comprises a plurality of slots, an effective surface(72), an effective surface boundary(74), and a non-effective surface(73). To improve the convergence characteristics and a picture quality on the end portion of a screen, a shadow mask has a same vertical width from an end row to an arbitrary row(N) on an arbitrary column on the effective surface and has a vertical width with the constraint S(x,m-N) divide N ≤ S(x,m) ≤ S(x,m-N) on the arbitrary row(N), where m is an arbitrary row of an effective surface.
Patent KR-19990083551-A (KR)
IPC: F25B47/02
Filed: 1999-04-28
Abstract: 본 발명은 냉장고에서 증발기의 성에제거 제어방법에 관한 것으로서, 삼방향 밸브(68)를 전환하여 냉동용 증발기(52)에만 냉매가 흐르도록 개시한 때부터 일정시간(T1) 경과후에 냉장용 증발기(50)가 일정 온도(D1)보다 낮을 때에는 냉장용 증발기(50)의 성에제거운전을 실시하는 바와 같이, 적절한 때에 성에제거를 실시함으로써 불필요한 성에제거 또는 과부착 성에에 의한 냉각열화를 방지하는 냉장고의 제어방법을 제공하는 것을 특징으로 한다.
Patent KR-20010001017-A (KR)
Inventor: JEONG WON WOOK
IPC: H04B1/40
Filed: 1999-06-01
Abstract: PURPOSE: A combination of an MP3 player and a cellular phone is provided to process and transmit a voice signal inputted to a microphone as an RF(Radio Frequency) signal, and to receive a voice signal of the other party as an RF signal to output the voice signal of the other party through a speaker or an earphone, so as to perform telephone speech while moving. CONSTITUTION: A microcomputer(101) controls cellular phone speech and MP3 file storage/play. A signal transmission line(102) is between the microcomputer(101) and each element. An antenna(103) transceives RF(Radio Frequency) signals for telephone speech. A modem(104) demodulates the RF signals received to the antenna(103), or demodulates signals to be transmitted for outputting. A CDDEC(COder/DECoder,105) decodes the demodulated RF signals and converts the encoded RF signals into voice signals for outputting, or encodes voice signals to input the voice signals to the modem(104). A microphone(106) inputs user voice signals to the CODEC(105). A speaker(107) outputs the voice signals of the other party outputted from the CODEC(105). A switching circuit(108) selectively inputs voice signals of the CODEC(105) and audio signals played from the MP3 file to the speaker(107). An LCD(109) displays every information according to a cellular phone mode or an MP3 player mode. A key inputting part(110) inputs key signals of user operations for cellular phone speech or MP3 file storage/play in the microcomputer(101). A memory(111) provides orders for controlling an equipment corresponding to the cellular phone mode or the MP3 player mode by the microcomputer(101). An MP3 audio file memory(112) stores the MP3 file and outputs stored data in the MP3 player mode by the microcomputer(101). An audio processor(113) converts the MP3 audio file data to analog signals, and synthesizes/amplifies the analog signals to output the analog signals to the speaker(107).
Patent KR-19990068762-A (KR)
Title: 간판등제어방법
IPC: G09F13/00
Filed: 1999-06-18
Abstract: 본 발명은 간판등의 제어방법에 관한 것으로, 특히 현재의 동작모드가 간판등을 제어하기 위한 작동모드이면 현재의 시간을 체크하여 오전인지 오후인지 판별하는 제 1 단계와, 현재의 시간이 오전이면 일출시간이 경과하였는지 판단하고 일출시간이 경과하였으면 릴레이 구동부(50)를 제어하여 상용전원이 간판등으로 공급되지 않도록 릴레이(60)를 오프시키는 제 2 단계와, 현재의 시간이 일출전이면 전일이 휴무요일인지 판단하고 전일이 휴무요일이면 간판등의 소등상태를 유지하며 전일이 휴무요일이 아니면 간판등의 점등상태를 유지하는 제 3 단계와, 상기 제 1 단계에서 현재의 시간이 오후이면 현재일이 휴무요일인지 판단하고 현재일이 휴무요일이면 간판등의 소등상태를 유지하며 현재일이 휴무요일이 아니면 현재시간이 일몰시간을 경과하였는지 확인하는 제 4 단계와, 현재의 시간이 일몰시간을 경과하였으면 릴레이 구동부(50)를 제어하여 상용전원이 간판등으로 공급되도록 릴레이 (60)를 온시키고 일몰시간이 경과하지 않았으면 간판등의 소등상태를 유지하는 제 5 단계를 구비한다. 따라서, 일출 및 일몰시간에 따라 간판등이 자동적으로 점소등되므로, 일출후나 일몰전에 간판등이 점등됨으로 인해 발생되는 불필요한 전력소비를 방지할 수 있다. 아울러, 격주단위 또는 특정주일의 특정요일을 휴무요일로 설정하면 해당 요일에도 간판등이 소등되어 유한자원인 에너지를 절약할 수 있다.
Patent KR-20010003239-A (KR)
Inventor: LEE BEOM RYEOL
IPC: G06Q99/00
Filed: 1999-06-22
Abstract: PURPOSE: A method for operating user interface control unit in a freight transfer system by using a virtual workspace metaphor is provided to supply the user interface control unit as an information communication medium between a user and a transfer agent system. CONSTITUTION: By mouse input, demanded information is displayed. Otherwise, icon is adjusted according to the information inputted from a transfer agent system. When vehicle information is demanded, the information is demanded to the system. By receiving the information, the information is displayed on a screen by using a graphic module. When owner information is demanded, the information is displayed on the screen by receiving the information from the system.
Patent KR-20000006458-A (KR)
Inventor: CASTELAN SLAVIC
IPC: C10G47/20
Filed: 1999-06-25
Abstract: PURPOSE: A catalyst for the feeding element of hydrocarbon is provided to improve the reaction efficiency when analyzing reaction by adding the hydrogen. CONSTITUTION: The catalyst contains: 0.1 to 99.8% of the delaminated zeolite more than one sort; 0.1 to 60% of elements more than one sort selected from the VB class; 0.1 to 99% of porous inorganic matrixes more than one sort of an amorphous or a low crystallized oxide type; 0.1 to 20% of cocatalytic elements more than one sort selected from the group consisting of boron, phosphorus and silicon except one included in zeolite; 0 to 60% of elements more than one sort selected from the VIB class element and VIII class element in some cases; and 0 to 20% of elements more than one sort selected from the VIIA class.
Patent KR-20010004527-A (KR)
Title: Chip scale package
Inventor: HONG SEONG HAK
IPC: H01L23/13
Filed: 1999-06-29
Abstract: PURPOSE: A chip scale package is provided to prevent a crack of a terminal solder ball by mounting a dummy solder ball not flowing an electric signal to an outer part of a terminal solder ball, increase a volume ratio about a package by forming many convex parts on a covering part, and suppress a rack phenomenon by maximally reducing a thermal expansion coefficient. CONSTITUTION: A chip scale package includes a semiconductor chip(10), a lead frame(20), a metal wire(40), a covering part(50), a terminal dummy solder ball(60), and a dummy solder ball(61). The lead frame is mounted to a bonding pad forming surface of the semiconductor chip. The lead frame includes many leads having the same number as the bonding part. A terminal projection part is formed on the bottom of each lead. The dummy leads are arranged between the leads. At least one projection part is formed on a dummy lead. The dummy projection part is mounted to an outer part of the terminal projection part. Each lead is connected to the bonding pad through a metal wire. The bottom of each projection part is molded by the covering part, and is exposed to the outside. A downward projected convex part is formed to a lower covering part of the lead's inner end. A side convex part is formed on outer part of the dummy projection part. Front and rear convex parts are formed to front and rear parts of the terminal and dummy projection parts. The terminal solder ball and the dummy solder ball are mounted to each projection part projected from the covering part.
Patent KR-20010009854-A (KR)
Inventor: LEE YUN SEOK
IPC: G03G15/06
Filed: 1999-07-14
Abstract: PURPOSE: A surface treatment method of a doctor blade for a developing apparatus is to allow the doctor blade to have uniform surface luminance and enhance the endurance and the anti-abrasive property. CONSTITUTION: A surface treatment method of a doctor blade for a developing apparatus comprises the steps of: preparing a base body(7) having a hexahedral shape; polishing a surface of the base body to be contacted with a developing roller(6) using a plane polishing machine such that the surface of the base body has a luminance of less than 1 micrometer; blast-processing the surface of the base body by blasting grits stacked inside an air gun using a compressive force of a compressor such that the surface of the base body has a luminance in a range of 1-10 micrometers; and forming a conductive anti-abrasive layer(7a) on the surface of the base body using a chemical vapor deposition.
Patent KR-20010016989-A (KR)
Inventor: JUNG SI SEOP
IPC: B60K5/12
Filed: 1999-08-06
Abstract: PURPOSE: An engine mounting member effectively blocks the transmission of a ripple generated from a car body to an engine, thereby improving a boarding sense. CONSTITUTION: The first absorbing member(2) made of a cylindrically formed metal has a flange on the lower portion thereof contacting to a car body. The second absorbing member(3) made of a different metal from the metal of the first absorbing member(2) is press fitted and mounted on the outer periphery of the first absorbing member(2), and disposed on the flange of the first absorbing member(2). The absorbing rubber(4) of a cylindrical form disposed on the periphery of the second absorbing member(3) has a groove wherein the end of an engine mounting bracket(8) is disposed. The bolt axis(5) passing through the cylinder of the first absorbing member(2) is disposed on a car body. The washer(6) is contacted with the first and the second absorbing member(2)(3) as well as the upper portion of the absorbing rubber(4).
Patent KR-20010017053-A (KR)
Inventor: JIN MU HYEON
IPC: A61K8/97
Filed: 1999-08-06
Abstract: PURPOSE: A cosmetic composition containing Calyx kaki extract, Lasiophaera Seu Calvatin extract, or Fructus polygoni Hydropiper extract as an effective ingredient is provided, which improves liver spots and freckles, and shows good skin whitening effect without side effect. CONSTITUTION: A process for the preparation of Calyx kaki extract, Lasiophaera Seu Calvatin extract, or Fructus polygoni Hydropiper extract comprises: pulverizing each Calyx kaki, Lasiophaera Seu Calvatin, or Fructus polygoni Hydropiper, and extracting by boiling 3hrs in a circulation extractor after adding water, anhydrous or hydrated primary alcohol of carbon number 1-4, ethylacetate or acetone; filtering with a 100mesh filter sheet, and extracting the residue one more time by same process; adding each extract, and filtering with a Whatman No.2 filter sheet at room temperature to eliminate non-soluble materials; concentrating under decompression at 60deg.C using a distiller with a cooling condenser, and freeze-drying to get each extract powder. The cosmetic composition contains 0.0001-10.0wt.% of Calyx kaki extract, Lasiophaera Seu Calvatin extract, or Fructus polygoni Hydropiper extract.
Patent KR-19990078781-A (KR)
Title: 자동차 운전석의 통풍 장치
Filed: 1999-08-02
Abstract: 본 발명은 자동차운전자의 항문과 전립선 부위에 땀이 차이지 않게 하는 운전석의 통풍장치에 관한 것이다. 
     종래의 자동차 운전석에는 통풍장치가 없었기 때문에 운전석에 장시간 앉아서 운전을 하면 운전자의 항문과 전립선 부위에 땀이 차서 치질과 전립선 질환을 유발케 하는 폐단이 있었던 것이다. 
     본 발명은 이상의 폐단을 방지하고자 발명한 것으로 이의 발명요지는 운전석 좌판(3)의 중심부에 공실(5) 절결 형성하고 이의 상부에는 걸림턱(6')이 있는 끼움실(6)을 형성하여 다수의 통기공(7')이 있는 통기방석(7)을 끼움 안치하고 공실(5)의 후측에는 통기로(5')를 형성하여 등판(5)의 하부와 연통되게 하고 공실(5)의 하부에는 DC전원과 연결된 휀(8)을 설치하여 휀(8)을 가동시키면 휀(8)에서 발생된 바람이 전기한 통기방석(7), 통기공(7')과 통기로(5')를 통해 배출되면서 운전자의 등허리는 물론 항문과 전립선 부위를 통풍시켜 이 부위에 땀이 차거나 나쁜 공기가 고이는 현상을 방지할 수 있게 한 것이다.
Patent KR-20010018931-A (KR)
Inventor: KIM GUI JU
IPC: E03D5/10
Filed: 1999-08-24
Abstract: PURPOSE: A toilet bowl provided with an electronic automatic outflow control system is provided to economize on water by discharging a moderate quantity of water according to urine and feces without users' manipulation. CONSTITUTION: A toilet bowl provided with an electronic automatic outflow control system comprises an exhaust part (3) discharging excrement, a seating part (2) installed on the exhaust part (3) to move up and down, a cover (1) covering the toilet seat (2) to move up and down, a water tank (5), an approach detecting sensor (10) installed around a water tank (5) to detect an approach of a person, a floodlight element (32) installed on the inner side of the exhaust part (3) to throw a light, a light absorbent element (34) installed on the corresponding location to the floodlight element (32), and a controller (70) which discharges the stored water in a water tank (5) after receiving signals from an approach detecting sensor (10) and controls the quantity of water discharged from a water tank (5) according to the forms of light absorbed from the light absorbent element (34).
Patent KR-20000017600-A (KR)
Inventor: DUBUISON-BRENGEL KESERLIN
IPC: C07C241/04
Filed: 1999-08-27
Abstract: PURPOSE: A method for preparing a substituted hydrazine from a carboxylic acid is provided in the presence of a 1,3,5-triazine having at least one substituent of Cl or F. CONSTITUTION: The method comprises reacting hydrazine or its salt or hydrate, or substituted hydrazine or its salt or hydrate with a carboxylic acid or its salt in the presence of at least one chloro- or fluoro-substituted triazine to produce hydroxytriazine and monoacylhydrazine or substituted monoacylhydrazine having the following formula: wherein R¬1 is a phenyl group, a 5-methyl-6-chromanyl group, a furyl group, a thienyl group, a pyridyl group or a benzyl group having at least one to three substituents independently selected from the group consisting of H, (C1-C8)alkyl, cyclo(C5-C6)alkyl, naphthyl, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C2)alkoxy(C1-C2)alkyl, (C1-C4)alkylthio, halo and cyano; R¬2 is a phenyl group, a benzyl group or a penethyl group having one to three substituents selected from the group consisting of (C1-C4)alkyl, phenyl, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C2)alkoxy(C1-C2)alkyl, (C1-C4)alkylthio, halo and cyano; R¬3 and R¬4 are each independently a phenyl group, a benzyl group or a penethyl group having one to three substituents selected from the group consisting of H, (C1-C8)alkyl, cyclo(C5-C6)alkyl, phenyl, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C2)alkoxy(C1-C2)alkyl, (C1-C4)alkylthio, halo and cyano; M is a hydrogen atom or a metal cation selected from the group consisting of Na, K, Li, Ca, Ce and Ba; n is an integer of 1 or 2; X is F or Cl; each Y is independently selected from the group consisting of F, Cl, R¬2 and OR¬2; and each Z is independently selected from the group consisting of hydroxy, R¬2 and OR¬2.