baber/WOPTO huggingface dataset:
Patent KR-830002834-B1 (KR)
Title: 토운아암(tone arm)자동복귀장치
IPC: G11B19/14
Filed: 1980-07-08
Granted: 1983-12-26
Abstract: 내용 없음.
Patent KR-840001614-B1 (KR)
Title: Process for preparing 4 - substituted pyridines and pyrimidines
Inventor: LOMBARDINO JOSEPH GEORGE
IPC: B29D99/00
Filed: 1980-10-15
Granted: 1984-10-11
Abstract: Title compds. (I;V=N, CH; n=1-2; Y=o-phenylene, propylene, substituded ethylenel R1=H2 Me, (C2-5 -alkanoy1, benzoy1) useful as antiinflammatorise and immunoregulatories, were prepd. by the reaction of II(Z1=halo) and III(Z2=SH) in inactive solvent. Thus, 97 % 253.6g 4-picoly1 chloride-hydrochloride was treated with 128.9g 2-mercaptoethanol at 21.5 hr in ethanol to give 195.7g 4-(2-hydroxyethylthiometh-y1) pyridine.
Patent KR-840000497-B1 (KR)
Title: Method for production of acylhydrazones of formyl-acetic acid ester
Inventor: KRUEGER HANS-RUDOLF
IPC: C07C241/02
Filed: 1980-10-16
Granted: 1984-04-16
Abstract: HCH2CO2R1 (I; R=C1-4 alkoxy or NH2; R1 = C1-6 alkyl) were prepd. Thus, 9.8g propionate ethyl ester was added dropwise over 5 min to 11.15g semicarbazide hydrochloride, 10.0g KHCO3, 10mL H2O, and 10mL ethanol, and the mixt. was warmed for 4 hr at 30oC to give 93.5% fromylacetate ethyl ester semicarbazon (3-semicarbazono-propionate ethyl ester) (I; R=NH2; R1=Et). Also prepd. was I (R=EtO; R1=Et).
Patent KR-880002496-B1 (KR)
Title: Photoelectric device
Inventor: EAMAMURA YOSHINORI
IPC: H01J29/45
Filed: 1980-12-18
Granted: 1988-11-19
Abstract: A photoelectric device have at least a signal electrode and an amorphous photoconductor layer whose principal constituent is silicon and which contains hydrogen.  The amorphous photoconductor layer is disposed adjacent to the signal electrode.  A thin layer is interposed between a signal electrode and a amorphous photoconductor layer.  The thin layer is made of an inorganic material whose principal constituent is at least one of the following compounds; an oxide of at least one of the elements Si, Ti, Al, Mg, Ba, Ta, Bi, V, Ni, Th, Fe, La, Be, Sc and Co; a nitride of at least one of the elements Ga, Si, Mg, Ta, Hf, Zr, Nb and B; or a halide of at least one of the elements Na, Mg, Li, Ba, Ca and K.
Patent KR-830001910-B1 (KR)
Title: 반추 가축용 사료(反芻 家畜用 飼料)의 제조방법
IPC: A23K50/15
Filed: 1981-11-25
Granted: 1983-09-23
Abstract: 내용 없음.
Patent KR-850001464-B1 (KR)
Title: Apparatus for product transportation in tire-forming machine
Inventor: IRIE NOBUHIKO
IPC: B29D30/08
Filed: 1982-04-17
Granted: 1985-10-10
Abstract: An apparatus is used to draw green tires into a tire-forming machine. The tire-forming machine is equipped with a transfer apparatus and a supporting apparatus. The transfer apparatus holds the outside of the green tire and then transfers it along the axis of a drum, while the supporting apparatus contracts and extends the tire. This apparatus moves the formed green tire automatically without reducing the accuracy of the transfer function.
Patent KR-890000738-B1 (KR)
Title: Vehicle for displaying goods
Inventor: KOMATSI SHIROU
IPC: A47F5/00
Filed: 1982-12-13
Granted: 1989-04-03
Abstract: The vehicle for displaying goods comprises a main body having opposite side walls and a display sub-body provided toward at least one of the side walls.  The sub-body is open toward the interior of the main body and internally provided with a display rack.  Using a hydraulic cylinder, the sub-body can be held in a position projected outward beyond the side wall of the main body when giving a display but, during running, is housed in the main body with its side wall flush with the main body side wall.
Patent KR-830001152-B1 (KR)
Title: Apparatus for the manufacturing of oriented and semicrystalline products
Inventor: AUSTEN A
Filed: 1983-01-22
Granted: 1983-06-16
Abstract: The appts. has the mandrel(57) & the die(29) to guide the tube oriented thermoplastic material(53) which is compressed by the oil(51) as the cylindrical piston(36) and the piston head(42) move upward along the inner surface of the shell(23). The tube made by the hydraulic extrusion system is extended over 100% in dia. & over 50% axially without any microstructural faults. The ratio of tensile impact strength to tensile strength is over 50% greater than that of a conventional system. The material includes the talc or Ca carbonate less than 60% in gravity.
Patent KR-900005568-B1 (KR)
Title: Rotation and elevation tool of the industrial robot
Inventor: NAEDA TAKASHI
IPC: B25J17/02
Filed: 1983-03-02
Granted: 1990-07-31
Abstract: The appts. comprises a frame connected to a robot arm movably suported by a frame-support. The frame-support is movalby mounted within an upstanding hollow sleeve of a stationary base, and a bearing is formed between an outer peripheral surface portion of the frame-support and an inner peripheral surface portion of the base hollow sleeve portion for slidably mounting the frame-support to undergo linear and angular sliding movements relative to the base hollow sleeve portion. A rotary motor effects angular driving movement of the frame-support member, and a linear motor effects linear movment of the frame-support member to accurately position the robot arm.
Patent KR-890003355-B1 (KR)
Title: Continuous method of graphitizing long furnace for carrying out the method
Inventor: BERNARD JEAN-CLAUDE
IPC: H05B3/60
Filed: 1983-10-06
Granted: 1989-09-19
Abstract: A continuous process for graphitisation of long, preheated carbon products comprises passing the products in column through a furnace and heating by jouble effect to at least 2500 deg.C.  The column is arranged approx. horizontally and the lining of the furnace consists of divided carbon which does not move through the furnace.  The process is used to manufacture electrodes, elongated bars, tubes of circular section etc.  The divided carbon consisting of coke granules does not become overheated, as in the prior art vertical furnace; hence it does not have to be cycled through the furnace.  This avoids loss of heat due to cooling of the coke granules.
Patent KR-860000421-B1 (KR)
Title: Brick
Inventor: JON BONG-KWON
IPC: C04B33/02
Filed: 1984-01-12
Granted: 1986-04-19
Abstract: The malm brick contains polyvinyl acetate, CaCl2 and quicklime. Polyvinyl acetate 0.02 - 0.5 wt.% CaCl2 0.05 - 1 wt.% and water- soluble quicklime 5 - 15 wt.% are added to the malm powder. The mixt. is molded to bricks under pressure.
Patent KR-870001103-B1 (KR)
Title: Laser assisted saw device
Inventor: MECKEN JOHN A
IPC: B27M1/06
Filed: 1984-04-21
Granted: 1987-06-08
Abstract: A laser source(14) is established in the lower portion of the timber(12) and this makes laser(16).  This laser is adjusted by an optical  instrument like a lens (18) to set its focus on the lower surface  of the timber.  The laser energy of the focus makes a hollowed  line on the timber surface along the desired sawing line ahead  of sawing work.  The depth of the hollowed line can be controlled  according to laser power, radius of the focus, timber feed  speed and the density of the wood.  Air is delivered through a nozzle(24) to prevent the accumulation of sawdust on the lens and the laser source by blowing power.
Patent KR-920003722-B1 (KR)
Inventor: REID SYDNEY J JR
IPC: H04N7/16
Filed: 1984-06-20
Granted: 1992-05-09
Abstract: 내용 없음.
Patent KR-870002124-B1 (KR)
Title: Preparation method of carbon molecular sieves
Inventor: VERMA SHYAM K
IPC: C01B23/00
Filed: 1984-12-21
Granted: 1987-12-09
Abstract: Carbon molecular sieves having a controlled pore structure of > 0.28 and < 0.384nm are made by sorbing a hydrocarbon of vapor state, especially C3H6 at 300-500≰C after degassing carbon substrate with pore size 0.5-0.55nm at 800-900≰C.  This is followed by degassing in vacuum and cracking the fixed hydrocarbon at 800-900≰C to deposit pyrocarbon.  This is treated with H at 100-200≰C and over 1 atm for protection against loss of capacity and selectivity.
Patent KR-880002687-B1 (KR)
Title: Process for manufacturing magnetic recording medium
Inventor: KO JONG-HO
IPC: C08L75/04
Filed: 1985-05-25
Granted: 1988-12-20
Abstract: Surfactant i.e. solbitol derivs. of formula (I)(0.5-10 wt.%) and magnetic materials i.e.  γ-Fe2O3, Co-γ-Fe2O3 are dispersed into macromol. resin adhesive (90-99.5 wt.%), which are coated onto base film i.e. polyethyleneterephthalate.  Where l,m and n are 1-8 integer, x,y and z are 0-3 integer.  Adhesives are e.g. vinyl chloride/vinyl acetate copolymer contg. vinyl alcohol (thermoplastic resin) 2-10 wt.% and polyurethane resin set by isocyanate (thermosetting resin), the ratio of copolymer to polyurethane is 65- 35:35-65.
Patent KR-920002222-B1 (KR)
Inventor: MENGK BEND H
IPC: A01N47/12
Filed: 1985-06-24
Granted: 1992-03-20
Abstract: 내용 없음.
Patent KR-890003803-B1 (KR)
Title: Multistage wire drawing apparatus
Inventor: KANADANI DADAYUKI
IPC: H02P5/50
Filed: 1985-08-30
Granted: 1989-10-05
Abstract: A multistage wire drawing apparatus for drawing a work made of a high melting point metal in a multistage manner, comprises a number of wire drawing units arranged in series, each unit comprising a heating device.  Dies through which the work heated by the heating device are inserted in the dies.  A number of tension measuring units are provided between adjacent ones of the drawing units for measuring a tension of the work between adjacent wire drawing units.  A control unit comparing the tension measured by the tension measuring unit with a predetermined reference tension and controlling the moving speed of the chuck head keeps tension on work constant.
Patent KR-890004863-B1 (KR)
Title: Process for high quality fe-si
Inventor: SHIN JAE-DONG
IPC: C22C38/02
Filed: 1986-01-22
Granted: 1989-11-30
Abstract: A process for high purity ferrosilicon comprises pouring the molten ferrosilicon made by usual method into a ladle, adding the refining flux in composition of SiO2 40-70%, CaO 10-40%, MgO 5-20% and CaF2 5- 20%, blowing oxidation gas mixed of orygen 5-30% and nitrogen 70-95%, removing the slag, and repeating the process.
Patent KR-910001832-B1 (KR)
Inventor: KAKIBUCHI NORIO
IPC: F16B9/02
Filed: 1986-03-17
Granted: 1991-03-26
Abstract: 내용 없음.
Patent KR-890003455-B1 (KR)
Title: Process for the production of a constricted pipe
Inventor: CHOI JONG-CHOL
IPC: B29C55/24
Filed: 1986-04-08
Granted: 1989-09-21
Abstract: A heat-shrinkable tube being radiation-crosslinked is wrapped by a polyester tape having a high strength at high temp. and a low elongation ratio,  passed through a molding pipe being enlarged in diameter by stages, dipped in heated alcohol having a high boiling point and a good compatibility with water, expanded by compressed air and cooled rapidly, and then the polyester tape is removed for producing the heat-shrinkable plastic tube which having a low longitudinal elongation and a good appearance.
Patent KR-930003748-B1 (KR)
Inventor: BECHT CLETUS A
IPC: B29D30/44
Filed: 1986-04-10
Granted: 1993-05-10
Abstract: 내용 없음.
Patent KR-940009393-B1 (KR)
Inventor: RENING HAINZ
IPC: H03F3/42
Filed: 1986-05-09
Granted: 1994-10-07
Abstract: 내용 없음.
Patent KR-890004598-B1 (KR)
Title: Making process of moccasin
Inventor: CHONG TAE-MUN
IPC: A43D15/00
Filed: 1986-05-08
Granted: 1989-11-20
Abstract: The making process of moccasin having a low cost and improved quality comprises (A) forming binding holes (201) of a upper sole (2') and outer sole (2) in a mold, which consists a upper plate having lots of uniform protruded part and a lower plate, (B) binding by string (8) the upper sole (2') and the outer sole (2) by fitting them at shoe last (4) having press lever (401), and (C) heat-setting at heated shoe last to make the moccasin.
Patent KR-890000607-B1 (KR)
Title: Ultrasone method and device for detecting and measuring defects in metal media
Inventor: BROOK M VLANDIMIR
IPC: G01N29/07
Filed: 1986-06-05
Granted: 1989-03-21
Abstract: An ultrasound generator provides a beam with an axis which intersects the outer surface of a pipe to be tested at 23-28 deg. to a line normal to the surface.  A longitudinal mode wave and a shear mode wave are propagated within the tube and the shear wave is converted into longitudinal mode waves by reflection from an opposite surface. A creeping longitudinal wave which follows the contour of the pipe inner surface is formed.  A receiver transducer receives echoes if a defect is found and the time between receiving an echo commensurate with the propogated wave and creeping wave is related to crack depth.  A data base which relates time intervals to defect dimensions is used.
Patent KR-890001482-B1 (KR)
Title: Preparation for chlorinated lime
Inventor: CHANG SUN-NAM
IPC: C01B11/06
Filed: 1986-06-12
Granted: 1989-05-04
Abstract: A method for prepg. chlorinated lime comprises (i) adding mix-soln. of Ca(ClO)2, NaCl and Ca(OH)2 slurry to NaClO aq. soln. (effective Cl=18-24 wt.%, prepd. by chlorination of NaOH soln. with Cl gas), (ii) chlorinating at 25-30 deg.C to form different cryst. size in Ca(ClO)2 and NaCl (as byproduct) and (iii) sepg. off NaCl.
Patent KR-940009036-B1 (KR)
Inventor: SPERRY PETER R
IPC: C09D7/46
Filed: 1986-06-26
Granted: 1994-09-29
Abstract: 내용 없음.
Patent KR-940005985-B1 (KR)
Inventor: HOLCBLAT ALAIN H
IPC: F22B37/18
Filed: 1986-07-02
Granted: 1994-06-30
Abstract: 내용 없음.
Patent KR-900002915-B1 (KR)
Title: Semiconductor memory device
Inventor: GAZUHIRO ZUGAMODO
IPC: G11C11/34
Filed: 1986-09-26
Granted: 1990-05-03
Abstract: The semiconductor memory device for removing the soft error comprises: a substrate of first type; a surface charge storage region and a bit line region both of second type; a first gate electrode for the charge storage region; a second gate electrode for the bit line region; insulation layers separating the regions and the gate electrodes; and two high concentration impurity regions adjacent the charge storage and bit line regions forming PN junctions with each.
Patent KR-940000545-B1 (KR)
Inventor: ORITO TSUKIO
IPC: E04C2/38
Filed: 1986-10-14
Granted: 1994-01-24
Abstract: 내용 없음.
Patent KR-900000672-B1 (KR)
Title: Tetrahydroisoquinoline derivatives and their preparation
Inventor: CLARK ROBIN D
IPC: C07C255/43
Filed: 1986-12-02
Granted: 1990-02-02
Abstract: 3-(4-Cyano-4-phenylalkyl)tetrahydroisoquinoline derivs. of formula (I) and their pharmaceutically acceptable acid addn. salts are prepared.  In (I), R1 and R2 are each H or lower alkoxy; R3 and R4 are each lower alkyl; R5 and R6 are each -OCH3; R5 and R6 together form -OCH2O- or -OCH2CH2O-.  (I) are useful as a bloodpressure depresser.
Patent KR-940008985-B1 (KR)
Title: Interpolymers of polyvinyl chloride and polyimides
Inventor: CLIKEMAN RICHARD R
IPC: C08F283/04
Filed: 1987-04-25
Granted: 1994-09-28
Abstract: Interpolymers of vinyl chloride and polyimide in a weight ratio of from 49:1 to 1.5:1 are disclosed. The polyimide has substantially no active acid and/or anhydride functional groups. Interpolymers of the present invention may show improved heat distortion resistance and processing characteristics. A process for the preparation of the interpolymer is also disclosed.
Patent KR-920002060-B1 (KR)
Title: 플래스틱 필터웨어
IPC: B01D71/10
Filed: 1987-06-16
Granted: 1992-03-10
Abstract: 내용 없음.
Patent KR-960006645-B1 (KR)
Inventor: HENDERSON BRUCE CAMERON
IPC: H02P9/10
Filed: 1987-12-23
Granted: 1996-05-22
Abstract: 내용 없음
Patent KR-950009150-B1 (KR)
Inventor: GEOFFREY WILSON
IPC: B21J13/10
Filed: 1988-03-03
Granted: 1995-08-16
Abstract: 내용 없음.
Patent KR-970004373-B1 (KR)
Title: Metal treatment
Inventor: LAWSON JOHN ROBERT
IPC: C08J5/12
Filed: 1988-04-01
Granted: 1997-03-27
Abstract: A compound containing a ligand group and a group of the general formula -NRCOR<1>aXbCR<2>=CHCOR<3> is used for treatment of a metal. The ligand group can be a triazole, an imidazole, an indazole, a thiazole, an oxazole, a carbamate, an xanthate or a phthalazine, or derivatives thereof. The compounds can be coated onto a metal surface, for example a copper surface. The metal surface may also be coated, simultaneously or subsequently, with a surface coating composition such as a paint or lacquer or an adhesive. When used with an adhesive, an increase in the adhesive strength is achieved.
Patent KR-920001495-B1 (KR)
Inventor: HOTTA TZNEO
IPC: H01J9/20
Filed: 1988-10-05
Granted: 1992-02-15
Abstract: 내용 없음.
Patent KR-940002003-B1 (KR)
Inventor: SAKAMOTO KATSUHIKO
IPC: H01R9/05
Filed: 1989-01-20
Granted: 1994-03-12
Abstract: 내용 없음.
Patent KR-920004927-B1 (KR)
Title: Flash type analog to digital converter
Inventor: CHONG HO-SON
IPC: H03M1/12
Filed: 1989-02-02
Granted: 1992-06-22
Abstract: The  converter  includes  a  PMOS  transistor  and  an  NMOS transistor. A plurality of comparators (C1-C15) have  sequentially different  threshold  values   by   the   shape   ratio   (channel width/channel length), and supply analogue  signals  to  the  PMOS transistor to control  it,  thereby  performing  totally  parallel comparisons. A plurality of buffer amplifiers (U1-U15) buffer  the output of the comparators (C1-C15), and a  priority  encoder  (PE) encodes the outputs of the comparators  (C1-C15)  based  on  their priorities to output N-bit digital signals. Thus the  constitution of  the  circuit  is  simplified,  and  the  converting  speed  is promoted.
Patent KR-910003731-B1 (KR)
Title: Article washing machine
Inventor: LEE DAE-SONG
IPC: B08B3/10
Filed: 1989-03-02
Granted: 1991-06-10
Abstract: The goods are washed by repetition of  osmotic  pressure  and reverse osmotic pressure in sealed container, and rotation of  the washing drum. The apparatus includes a washing drum  being  filled with goods a sealed container being filled with washing fluid such as water etc., and subsidiary  means  with  plunger  and  rotating member, which gives pressurization or evacuation to the  fluid  in the sealed container repeatedly for making osmosis action.
Patent KR-910002270-B1 (KR)
Title: Method of removing gas from vessel
Inventor: BANG WOON-HWA
IPC: B01J20/28
Filed: 1989-04-07
Granted: 1991-04-11
Abstract: The unnecessary gas or volatile compound being created in the airtight  packing  case  contg.  processed   foodstuff,   chemical material, agricultural and  live  stock  products  is  removed  by absorbing into an absorbent. The  absorbent,  e.g.  Ca(OH)2,  NaOH soln. etc., is wrapped in membrane of high polymer.  The  membrane has a good effect for passing only gas is coated or laminated into paper or textile.
Patent KR-920006835-B1 (KR)
Inventor: IKEJIMA SADOMI
IPC: B66B1/16
Filed: 1989-04-11
Granted: 1992-08-20
Abstract: 내용 없음.
Patent KR-940000009-B1 (KR)
Inventor: KULCSAR GABOR
Filed: 1989-07-29
Granted: 1994-01-05
Abstract: 내용 없음.
Patent KR-0144731-B1 (KR)
Inventor: HOOVER ALAN ANDERSON
IPC: H04N9/29
Filed: 1989-09-01
Granted: 1998-07-15
Abstract: 내용없음
Patent KR-970008037-B1 (KR)
Inventor: AGHAJANIAN MICHAEL K
IPC: C22C21/00
Filed: 1989-09-30
Granted: 1997-05-20
Abstract: 요약없음
Patent KR-930011366-B1 (KR)
Title: Polyetherester amide-based water vapor-permeable thermoplastic elastomer filmm, process for its mamufacture and articles comprising a film of this kind
Inventor: FLESHER JOSEPH R
IPC: C08J5/18
Filed: 1989-11-24
Granted: 1993-12-04
Abstract: Polymeric film of water-vapour-permeable thermoplastic elastomer type and the process for its manufacture. The film in accordance with the invention is based on polyetheresteramide and preferably on block polyetheramide. The invention also relates to articles comprising such a film and capable in particular of coming into contact with the human body.
Patent KR-930003246-B1 (KR)
Inventor: TSUCHIYA YUJO
IPC: G11B15/29
Filed: 1989-12-26
Granted: 1993-04-24
Abstract: 내용 없음.
Patent KR-940000250-B1 (KR)
Title: Signal transmitting device of door phone
Inventor: CHOE HYON-JONG
IPC: H04B3/54
Filed: 1989-12-28
Granted: 1994-01-12
Abstract: The device is arranged so that signal frequencies of a voice signal and image signal are separated between an indoor parent device (A) and a child device (B) on a front gate. The image signal from camera (3), the voice signal from microphone (5), a synchronization signal and a low frequency power are superposed, and the four signals simultaneously are transmitted through a single line, so that installation of the door phone becomes convenient, resulting in low cost and higher reliability.
Patent KR-960012797-B1 (KR)
Inventor: FILLIMAN PAUL DEAN
IPC: H04H20/88
Filed: 1988-08-10
Granted: 1996-09-24
Abstract: 요약없음
Patent KR-930003849-B1 (KR)
Inventor: MAKIMAE TATSUMI
IPC: G05D17/02
Filed: 1990-02-08
Granted: 1993-05-14
Abstract: 내용 없음.
Patent KR-930006490-B1 (KR)
Title: Method and apparatus for stretching dough
Inventor: HAYASHI TORAHIKO
IPC: A21C3/02
Filed: 1990-03-05
Granted: 1993-07-16
Abstract: A method and apparatus for stretching dough is provided, by which bread dough or confectionery dough is continuously and smoothly stretched by linearly reciprocating a roller (8) over the surface of dough (12) which is continuously conveyed by a series of conveyors, while the roller is rotated by a drive means, and by which method and apparatus the dough can be smoothly stretched without the accumulation of the dough in front of the entrance of the apparatus, thereby obtaining the desired thickness of dough in one operation from the continuously supplied dough material. When moving upstream the roller rotation in the same direction as the movement of the dough , and when moving downstream the roller rotation in the opposite direction.
Patent KR-920004237-B1 (KR)
Title: Clutch control system of car
Inventor: HONG KYUNG-SON
IPC: B60K23/00
Filed: 1990-03-15
Granted: 1992-05-30
Abstract: The  clutch  regulation  system  has  a  pneumatic  tank  (1) connected with relay valve (2) through the  first  pneumatic  line (3), control valve (4) connected with the pneumatic tank and relay valve (2) through the second pneumatic line, booster (7) connected with relay valve (2) through the third pneumatic line (6), and the booster (7) connected with main body of the clutch (8). A pedal is hinged to cover of valve assembly in the  control  valve  (4)  and supported by the spring for two spring-seats in the upper part  of valve assembly. A pressure chamber with diaphragm is pierced for a port connecting with control valve (4) in the upper  part  of  the valve body.
Patent KR-940009750-B1 (KR)
Title: Processing unit for korean character data
Inventor: KIM HONG-CHOL
IPC: G06F3/153
Filed: 1990-06-30
Granted: 1994-10-17
Abstract: The system can display Hangul while keeping the special code using Hangul character ROM. The system comprises: a micro processor converting 2 byte Hangul code to bits code and controlling the whole system, a Hangul register storing bits code contemporary, a Hangul code address converting part converting the bits code of Hangul register to address, a Hangul character ROM, which is EPROM, outputting the Hangul font data by upper address of the Hangul code address converting part and lower address of the microprocessor .
Patent KR-960001408-B1 (KR)
Inventor: NISHIYA KYOSUKE
IPC: A22C25/16
Filed: 1990-08-06
Granted: 1996-01-27
Abstract: 내용 없음.
Patent KR-100194971-B1 (KR)
IPC: C08F2/00
Filed: 1990-09-14
Granted: 1999-06-15
Abstract: A process for preparing improved yields of styrene polymers by means of polymerization with a coordination type polymerization catalyst wherein the styrene monomer is first contacted with a hydrogenating agent under hydrogenation conditions such that substantially all phenylacetylene contained in the monomer stream is hydrogenated and thereafter contacting with a coordination polymerization catalyst.