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1. 发明专利

DE3369522D1 PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS 未知
公开(公告)号：DE3369522D1
公开(公告)日：1987-03-05
申请号：DE3369522
申请日：1983-04-13
申请人： HITACHI LTD
发明人： NAKA REISHI , SHIBATA KATSUO , KOBAYASHI ISAO
IPC分类号： C08G18/00 , C08G18/48 , C08G18/50 , C08G18/14
摘要： A rigid polyurethane foam can be obtained in one-shot method by reacting a polyol mixture comprising a tetrafunctional tolylenediamine type polyol, a difunctional propylene type polyol, an octafunctional sucrose type polyol and a trifunctional diethanolamine type polyol with an isocyanate component in the presence of a reaction catalyst, a blowing agent and a foam stabilizer. The thus obtained rigid polyurethane foams have improved fluidity, dimensional stability, friability and thermal conductivity and shortened demolding time.

2. 发明专利

JPH03272824A MOLDING METHOD OF SANDWICH STRUCTURE 失效
公开(公告)号：JPH03272824A
公开(公告)日：1991-12-04
申请号：JP28422290
申请日：1990-10-24
申请人： HITACHI LTD
发明人： GOTO MASAO , NAKAMURA SHOZO , WARATANI KENICHI , YOKONO ATARU , AOKI MASAYOSHI , SHIBATA KATSUO , NAKA REIJI
IPC分类号： B32B27/08 , B29C33/04 , B29C39/26 , B29C39/38 , B29C45/16 , B29C45/72 , B29C45/73 , B29K105/04 , B29L9/00 , B32B37/15
摘要： PURPOSE:To heighten the strength of a molded object by a method in which the temper ature of a mold is regulated by the flow of warm water through a thermostatic hole, whereby the fluidity of raw liquid is raised, and before the raw liquid is solidified by reaction and molds a molded object, the desired position to be strengthened of the molded object is cooled by the flow of cooling a medium through a cooling hole, thereby molding a skin layer thick. CONSTITUTION:A cooling hole 7 is bored at the corner part 5b of the top force 5A which molds the corner part of the recessed part of a molded object. The inner diameters and the positions of the cooling hole 7 and the hole 8 for temperature- regulation are determined by the various factors of the temperature, conducted heat amount, specific heat and heat conductivity of the resin poured in a mold cavity 4 and the material of the top force 5A etc. The mold-temperature in the time when the raw liquids of two kinds are poured into the mold cavity 4, is regulated by causing the warm water of 40-45 deg.C to flow through a thermostatic hole 8. Before the raw liquids of two kinds poured into the mold cavity 4 is solidified by reaction and molds a molded object, the cooling medium cooled to about -5 - +10 deg.C by liquid nitrogen gas or Freon gas etc. is caused to pass the cooling hole 7 and cools the raw liquid in the mold cavity 4 adjacent to the cooling hole 7, whereby the skin layer with high density and desired thickness is molded, and its strength is improved.

3. 发明专利

JPS6115351B2 JPS6115351B2 - 失效
公开(公告)号：JPS6115351B2
公开(公告)日：1986-04-23
申请号：JP11467278
申请日：1978-09-20
申请人： Hitachi Ltd
发明人： YAMAZAKI SUSUMU , SHIBATA KATSUO , KODA AKIO , FUJINUMA ZENZABURO , ONO MINORU , ISHIDA SHINICHI
IPC分类号： F25D23/08

4. 发明专利

JPS6170364A Refrigerator 失效
公开(公告)号：JPS6170364A
公开(公告)日：1986-04-11
申请号：JP19153484
申请日：1984-09-14
申请人： Hitachi Ltd
发明人： SHIBATA KATSUO , IIZUKA TADASHI , IIZUKA KENICHI , IKEDA KAZUO , SASAMOTO NOBUHIKO
IPC分类号： F25D11/00 , F04B49/00 , F04B49/06 , F25B1/00

5. 发明专利

JPS5984913A PRODUCTION OF RIGID POLYURETHANE FOAM 失效
公开(公告)号：JPS5984913A
公开(公告)日：1984-05-16
申请号：JP6108582
申请日：1982-04-14
申请人： HITACHI LTD
发明人： NAKA REIJI , SHIBATA KATSUO , KOBAYASHI ISAO
IPC分类号： C08G18/00 , C08G18/48 , C08G18/50
摘要： PURPOSE:To improve the fluidity and dimensional stability and reduce the demolding time without deteriorating the heat conductivity characteristics of a rigid urethane foam in obtaining the rigid urethane foam by the one-shot method, by using a specific polyol mixture as a polyol component. CONSTITUTION:(A) polyol mixture, having preferably 450-480 average hydroxyl number, and containing (i) a tetrafunctional tolylenediamine polyol, (ii) a bifunctional propylene polyol, (iii) an octafunctional sucrose polyol, and (iv) trifunctional diethanolamine polyol is reacted with (B) an isocyanate component in the presence of a catalyst, a foaming agent and a foam stabilizer to give the aimed foam. The amounts of the respective components (i), (ii), (iii) and (iv) in the component (A) are preferably as follows; 64-66pts.wt. component (i), 16- 14pts.wt. component (ii), 5-7pts.wt. component (iii) and 13-15pts.wt. component (iv).

6. 发明专利

JPS5892774A FOAMED DOOR OF DOOR FOR REFRIGERATOR 失效
公开(公告)号：JPS5892774A
公开(公告)日：1983-06-02
申请号：JP18789181
申请日：1981-11-25
申请人： HITACHI LTD
发明人： NAKA SATSUJI , KUROISHI KAZUYOSHI , OBARA ISAO , SHIBATA KATSUO , HIRUNUMA NOBUO
IPC分类号： F25D23/08 , F25D23/06

7. 发明专利

JPS55143373A HEATTINSULATING BOX 失效
公开(公告)号：JPS55143373A
公开(公告)日：1980-11-08
申请号：JP4904679
申请日：1979-04-23
申请人： HITACHI LTD
发明人： NAKA REIJI , SHIBATA KATSUO , WATANABE YUKIO , KOBAYASHI ISAO
IPC分类号： F25D23/08 , B65D81/38

8. 发明专利

JPH0234966B2 失效
公开(公告)号：JPH0234966B2
公开(公告)日：1990-08-07
申请号：JP6108582
申请日：1982-04-14
申请人： HITACHI LTD
发明人： NAKA REIJI , SHIBATA KATSUO , KOBAYASHI ISAO
IPC分类号： C08G18/00 , C08G18/48 , C08G18/50
摘要： A rigid polyurethane foam can be obtained in one-shot method by reacting a polyol mixture comprising a tetrafunctional tolylenediamine type polyol, a difunctional propylene type polyol, an octafunctional sucrose type polyol and a trifunctional diethanolamine type polyol with an isocyanate component in the presence of a reaction catalyst, a blowing agent and a foam stabilizer. The thus obtained rigid polyurethane foams have improved fluidity, dimensional stability, friability and thermal conductivity and shortened demolding time.

9. 发明专利

JPH01316221A MIXING HEAD FOR POLYURETHANE FOAM 失效
公开(公告)号：JPH01316221A
公开(公告)日：1989-12-21
申请号：JP10760189
申请日：1989-04-28
申请人： HITACHI LTD
发明人： GOTO KATSUHIKO , SHIBATA KATSUO , KUROISHI KAZUYOSHI , NAKA REIJI
IPC分类号： B29B7/76
摘要： PURPOSE:To enable the mixing property of double liquids to be easily controlled to a most excellent condition without removing lines and without changing parts by equipping with a plurality of nozzles, a needle provided with slant grooves, an external adjusting means connected to the nozzles and an adjusting means for variably controlling the area of conduits from the external part. CONSTITUTION:Double liquids (liquid P, liquid R) are respectively ejected from the inlet 4a of solution under high pressure and facingly ejected from an outlet 5a, and imparted a swirl force up to the vicinity of the tip of a needle 3a through grooves 3d, and then injected in spreading into a centrifugal direction from the liquid outlet 5a, furthermore, continued to be swirled. The liquid continuing to be swirled in this manner collides with the liquid continuing to be facingly injected and swirled, and mixed with each other uniformly. In order to obtain the excellent mixing property in corresponding to the viscosity of liquid and the viscous difference of double liquids, the amount of flow rate and the like, the attaching position of an external adjusting nozzle holder 2 to a head main body 1 is adjusted through angle divisions 2a and length divisions 1a so as to obtain an appropriate collision distance A. And a predetermined discharging pressure can be obtained through adjusting an external adjusting needle 3 by the angle divisions 3c and a pointer 4b.

10. 发明专利

JPS613644B2 JPS613644B2 - 失效
公开(公告)号：JPS613644B2
公开(公告)日：1986-02-03
申请号：JP6889080
申请日：1980-05-26
申请人： Hitachi Ltd
发明人： WARATANI KENICHI , NAKAMURA SHOZO , GOTO MASAO , YOKONO ATARU , AOKI MASAYOSHI , SHIBATA KATSUO , NAKA REIJI
IPC分类号： B29C45/73 , B29B13/00 , B29C33/00 , B29C33/02 , B29C33/40 , B29C39/02 , B29C39/26 , B29C39/38 , B29C39/42 , B29C43/00 , B29C45/26 , B29C45/37 , B29K105/04
CPC分类号： B29C33/02 , B29C45/37

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