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61. 发明专利

JPS61152667A PURIFICATION OF 3,4-DICARBOXY-1,2,3,4-TETRAHYDRO-1-NAPHTHALENESUCCINIC ACID DIANHYDRIDE 失效
公开(公告)号：JPS61152667A
公开(公告)日：1986-07-11
申请号：JP28059384
申请日：1984-12-27
申请人： NEW JAPAN CHEM CO LTD , KODO KEIUN
发明人： KITAGAWA HIROSHI , KAWASHIMA YUJI , KITAGAWA YUKIO , KODO KEIUN
IPC分类号： C07D307/92
摘要： PURPOSE:To improve the purity of 3,4-dicarboxy-1,2,3,4-tetrahydro-1- naphthalenesuccinic acid dianhydride, economically, by converting the anhydride to organic acid using water as the recrystallization solvent and fractionating the product taking advantage of the solubility difference between the objective compound and impurities. CONSTITUTION:3, 4-Dicarboxy-1,2,3,4-tetrahydro-1-naphthalenesuccinic acid dian hydride (abbreviated as TDA) is dissolved in water. The impurities floating on water are separated from the aqueous phase e.g. by filtration, preferably under heating. An organic acid of the above succinic acid dianhydride can be obtained by cooling the aqueous phase. The organic acid is separated from the aqueous phase, recovered, dried, and converted to acid anhydride e.g. by heating or dehydration with acetic anhydride, etc. to obtain TDA. TDA is useful especially as a raw material of polymers such as polyimide and the organic acid of TDA is also useful as a raw material for the production of plasticizer, polyimide, etc.

62. 发明专利

JPS59120766A AIR BLEED DEVICE 失效
公开(公告)号：JPS59120766A
公开(公告)日：1984-07-12
申请号：JP12508883
申请日：1983-07-08
申请人： KODO KEIUN
发明人： KOUDOU KEIUN
IPC分类号： F02M7/28 , F02M9/133
摘要： PURPOSE:To feed thin mixed air under a low load by connecting a sub-air bleed section provided with a valve opened when a predetermined negative pressure is applied in an air flow passage to a fuel feed section in an air bleed section suitable to a variable Venturi-type carburetor. CONSTITUTION:When an engine is in operation, the fuel in a fuel reservoir 13 communicated to a float chamber 16 is pre-mixed with air in an expanded flow passage 21 by the suction negative pressure then is sucked into a suction passage through an annular orifice 5. At this time, if an acceleration pedal is depressed, a throttle plate 4 is rotated to increase the intake air flow, the absorption force of a movable piece 3 in a negative pressure chamber 7 is increased, the movable piece 3 is moved downward against a spring 42, and the Venturi area is expanded. A sub-air bleed section 43 is provided in connection with the said expanded flow passage 21. This sub-air bleed section 43 is constituted with an air flow passage 46 communicated to the outside atmosphere and a valve 47 provided in the flow passage 46 and opened by the predetermined negative pressure value.

63. 发明专利

JPS59120762A FUEL CONTROL MECHANISM 失效
公开(公告)号：JPS59120762A
公开(公告)日：1984-07-12
申请号：JP12509083
申请日：1983-07-08
申请人： KODO KEIUN
发明人： KOUDOU KEIUN
IPC分类号： F02M5/08 , F02M9/133 , F02M9/14
摘要： PURPOSE:To improve the fuel consumption by constituting the upper space of a float chamber so as to introduce the suction negative pressure through an air passage, introducing the strong negative pressure during quick deceleration, etc. into the float chamber, and controlling the fuel quantity flowing through a suction passage. CONSTITUTION:When an engine is in operation, the fuel in a fuel reservoir 13 communicated to a float chamber 16 is pre-mixed with air in an expanded flow passage 21 by the suction negative pressure from an annular orifice 5. At this time, if an acceleration pedal is depressed, a throttle plate 4 is rotated to increase the intake air flow, the absorption force of a movable piece 3 in a negative pressure chamber 7 is increased, the movable piece 3 is moved downward against a spring 42, and the Venturi area is expanded. An air passage 45 introducing the suction negative pressure below the said throttle plate 4 into the upper space of the float chamber 16 is provided and the strong negative pressure during quick deceleration, etc. is introduced into the float chamber 16, thereby the fuel quantity flowing from the chamber 16 into the orifice 5 is suppressed.

64. 发明专利

JPS58128454A VARIABLE VENTURI TYEP CARBURETTOR 失效
公开(公告)号：JPS58128454A
公开(公告)日：1983-08-01
申请号：JP1240582
申请日：1982-01-27
申请人： KODO KEIUN
发明人： KOUDOU KEIUN
IPC分类号： F02M9/14 , F02M9/133 , F02M19/02
摘要： PURPOSE:To make it possible to properly supply mixed gas at the time of the starting of an engine in responce to the state of its load by adjusting a flow velocity while moving up and down a vlave body by the negative pressure of a suction pipe within a drawn annular Venturi, and controlling the auxiliary fuel while switching power jet. CONSTITUTION:Negative pressure produced at the opening part of a communication hole 20 by the negative pressure of a suction pipe that is not so intense is transmitted to a negative pressure chamber 8 to permit a valve body 7 to be shifted below. The maximum diameter of the valve body 7 faces the inside surface of a throat part 2 to minimize a Venturi area and thereby the flow velocity of air is high and the amount of induced draft fuel from an orifice 4 is large as compared with the amount of the air. Further, a main jet part 25 and a power jet 27 are also opened to supply fuel, and concentrated mixed gas required for the starting of an engine is supplied. When it is operated with light load, the negative pressure becomes inteuse, so that the valve body 7 shifts up and down according to the opening of an accelerator, and fuel is supplied only by the main jet. When the rotation of the engine does not follow the stepping of the accelerator at the time of heavy load, the negative pressure of the suction pipe is weakened, the valve body 7 moves upward to reduce the Venturi area, and the power jet is also opened, allowing fuel supply to be increased.

65. 发明专利

JPS5832859B2 失效
公开(公告)号：JPS5832859B2
公开(公告)日：1983-07-15
申请号：JP10613380
申请日：1980-07-31
申请人： KODO KEIUN
发明人： KODO KEIUN , NISHIGAKI HIROSHI
IPC分类号： A22C25/00 , A23L5/10 , A23L5/20 , A23L11/00 , A23L17/00

66. 发明专利

JPS57196014A APPARATUS FOR SUPPLYING COMBUSTION AUXILIARY AGENT 失效
公开(公告)号：JPS57196014A
公开(公告)日：1982-12-01
申请号：JP8029481
申请日：1981-05-27
申请人： KODO KEIUN
发明人： KOUDOU KEIUN
IPC分类号： F02M17/28 , F02M25/00 , F02M25/022 , F02M25/032 , F23C99/00 , F23L7/00
摘要： PURPOSE:To improve the efficiency of combustion by a method wherein a hollow evaporator head of porous material having combustion auxiliary agent such as water, alcohol etc. therein is arranged in the air pipe extending from a combustion air inlet port to the fuel supplying port. CONSTITUTION:A Venturi part 4 is arranged at air pipe 3 extending to a fuel supplying part (a) from an air cleaner 11 and an evaporator head 1 arranged downstream of the Venturi part. The evaporator head 1 is formed of porous material 2 having permeability to water or alcohol and a supporting part closing the bottom part of the head, and then combustion auxiliary agent such as water and alcohol etc. in the tank 5 is fed to the hollow conical porous material 2 through valve 6, filter 7, valve 8 and hollow pipe 13. The combustion auxiliary agent having a volume corresponding to a degree of decreased pressure in the air pipe 3 is exudated from the evaporator head 1 and then mixed with the combustion air. Thus, it is possible to provide a stable supply of combustion auxiliary agent for a long period of time.

67. 发明专利

JPS5611919A PRODUCTION OF GRAFT COPOLYMER 失效
公开(公告)号：JPS5611919A
公开(公告)日：1981-02-05
申请号：JP8706179
申请日：1979-07-10
申请人： KODO KEIUN
发明人： KOUDOU KEIUN , OOUCHI TATSUROU , NISHIGAKI HIROSHI
IPC分类号： C08F2/00 , C08F291/00 , C08J7/16 , D06M13/00 , D06M13/02 , D06M13/184 , D06M13/203 , D06M14/00 , D06M14/08
摘要： PURPOSE:To polymer base containing water is dipped in a solution of a water- soluble unsaturated monomer in a hydrophobic solvent to produce titled copolymer that has high graft efficiency, contains no free homopolymer and can be readily separated. CONSTITUTION:A polymerizable and water-soluble unsaturated monomer such as acrylic or methacrylic acid is dissolved in a hydrophobic solvent such as toluene or ligroin. Then, a polymer base in the form of powder, fiber or film, which is made of a polymer compound bearing hydrophilic groups such as hydroxyl or carboxyl, e.g., nylon or cellulose, is impregnated with 6-10 parts of water per one part of the base and dipped into the above solution to effect graft polymerization. A radical catalyst which is insoluble in the organic solvent but soluble in water such as hydrogen peroxide or potassium persulfate or a trace amount of a metal salt is preferably added to the water which is used in the impregnation.

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