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1. 发明专利

JPS6281414A PRODUCTION OF RIGID POLYURETHANE FOAM 失效
公开(公告)号：JPS6281414A
公开(公告)日：1987-04-14
申请号：JP22180285
申请日：1985-10-07
申请人： HITACHI LTD
发明人： NAKA REIJI , KUROISHI KAZUYOSHI , GOTO KATSUHIKO , KOBAYASHI ISAO , SHIMADA SEIJI
IPC分类号： C08G18/50
摘要： PURPOSE:To obtain a rigid polyurethane foam excellent in reduction in thermal conductivity, flow and mold release, by reacting a specified component in the presence of a reaction catalyst, a blowing agent and a foam stabilizer. CONSTITUTION:A polyol component having an average OH value of 430-450, comprising a mixture of 52wt% tetrafunctional tolylenediamine polyol, 12wt% bifunctional bisphenol polyol, 20wt% tetrafunctional methyl glucoside polyol, 5wt% octafunctional sucrose polyol and 11wt% trifunctional diethanolamine polyol is reacted with an isocyanate component having an NCO content of 31.6%, comprising a mixture of 70wt% polymethylene polyphenyl diisocyanate and 30wt% sucrose tolylene diisocyanate prepolymer in the presence of a blowing agent (e.g., trichlorofluoromethane containing 1wt% or below water), a foam stabilizer and a reaction catalyst.

2. 发明专利

JPS5995374A MANUFACTURE OF HEAT-INSULATING BOX BODY 失效
公开(公告)号：JPS5995374A
公开(公告)日：1984-06-01
申请号：JP20464882
申请日：1982-11-24
申请人： HITACHI LTD
发明人： NAKA REIJI , GOTOU KATSUHIKO , KUROISHI KAZUYOSHI , SHIMADA SEIJI
IPC分类号： F25D23/08

3. 发明专利

JPS621716A PRODUCTION OF URETHANE FOAM 失效
公开(公告)号：JPS621716A
公开(公告)日：1987-01-07
申请号：JP14030585
申请日：1985-06-28
申请人： HITACHI LTD
发明人： NAKA REIJI , KUROISHI KAZUYOSHI , GOTO KATSUHIKO , KOBAYASHI ISAO , SHIMADA SEIJI
IPC分类号： C08G18/00 , C08G18/50 , C08J9/02
摘要： PURPOSE:To obtain the titled product suitable as an heat insulating material for refrigerators, having improved insulating properties, low-temperature dimensional stability and compression strength, by using a specific polyether mixture as a polyol component and a specific isocyanate mixture as an isocyanate component. CONSTITUTION:100pts.wt. composition having 380 average OH value, consisting of (A) 67-68wt% adduct of sucrose with propylene oxide, (B) 24-25wt% adduct of triethanolamine with propylene oxide, (C) 6-5wt% addcut of orthotolylenediamine with ethylene oxide/propylene oxide and 3wt% water as a polyol component is reacted with a necessary amount of a composition having 118 amine equivalent, consisting of (D) 60-65wt% polymethyldiphenyl diisocyanate and (E) 40-35wt% sucrose polyether type tolylene diisocyanate prepolymer as an isocyanate component, 1.5pts.wt. foam stabilizer and 2pts.wt. catalyst to give the aimed product.

4. 发明专利

JPS599483A Manufacture of heat-insulating box body 失效
公开(公告)号：JPS599483A
公开(公告)日：1984-01-18
申请号：JP11860982
申请日：1982-07-09
申请人： Hitachi Ltd
发明人： NAKA REIJI , GOTOU KATSUHIKO , KUROISHI KAZUYOSHI , SHIMADA SEIJI
IPC分类号： F25D23/08 , B29B7/00 , B29C39/00 , B29C39/10 , B29C39/24 , B29C39/26

5. 发明专利

JPS599482A Manufacture of heat-insulating box body 失效
公开(公告)号：JPS599482A
公开(公告)日：1984-01-18
申请号：JP11833882
申请日：1982-07-09
申请人： Hitachi Ltd
发明人： NAKA REIJI , GOTOU KATSUHIKO , KUROISHI KAZUYOSHI , SHIMADA SEIJI
IPC分类号： F25D23/08

6. 发明专利

JPH02238282A REFRIGERATOR BOX 失效
公开(公告)号：JPH02238282A
公开(公告)日：1990-09-20
申请号：JP5640889
申请日：1989-03-10
申请人： HITACHI LTD
发明人： TANAKA KOSUKE , NAKA REIJI , SHIMADA SEIJI
IPC分类号： F25D23/06
摘要： PURPOSE:To make a thin wall without producing any cracks caused by urethane foam agent for an inner box material of a refrigerator and enable a less- expensive box of refrigerator through a reduction of amount of urethane foam agent to be produced by a method wherein a surface contacting with a foam thermal insulating material of the inner box is formed by acrylonitryl-butadiene- styrene copolymer resin having butadiene rubber particle diameter specified. CONSTITUTION:A particle diameter of butadiene rubber of ABS resin used as an inner box material is set more than 3mum. In this case, since an added amount of butadiene rubber in ABS resin has a specified amount, it is possible to cause a surface area of butadiene rubber particle to be less than one third. Trichlormonofluoromethane (R-11) acting as foaming agent of urethane foam thermal insulation material is absorbed in butadiene rubber in ABS resin. As its absorbing amount is increased, some cracks are generated by a chemical attack. However, its absorbing amount can be reduced if the butadiene rubber particle surface area is decreased, ABS resin having a large butadiene rubber particle diameter may act to prevent the chemical attack and even if the inner box material 1 is made to have a thin wall, there may not occur any cracks at all.

7. 发明专利

JPS6428476A REFRIGERATOR BOX BODY 失效
公开(公告)号：JPS6428476A
公开(公告)日：1989-01-31
申请号：JP18326687
申请日：1987-07-24
申请人： HITACHI LTD
发明人： TANAKA KOSUKE , NAKA REIJI , SHIMADA SEIJI
IPC分类号： F25D23/08
摘要： PURPOSE: To reduce a cost by coating a surface of an inner case in contact with a foam heat insulator with a primer obtained by mixing an acrylic resin with a chlorinated polypropylene, and diluting the mixture with toluene, thereby using a chlorinated styrol resin or olefin resin of a low cost as a material of the inner case. CONSTITUTION: Since a primer 7 obtained by mixing an acrylic resin with a chlorinated polypropylene and diluting the mixture with toluene is excellent in chemical resistance of the acrylic resin, it is operated to prevent a chemical attack of trichlorofluoromethane mixed with a polyurethane foam 8. Further, the toluene used as a dilute agent expedites chemical etching of the chlorinated styrol resin and the olefin resin, and hence its physical bonding force is enhanced, and since it is strong in volatility, it can be treated at the ambient temperature in a short time, and hence the chlorinated styrol resin of a material of the inner case, the olefin resin, polyurethane foam are strongly adhered via the primer obtained by mixing the acrylic resin with the chlorinated polypropylene, and hence a strength of the case is not lowered.

8. 发明专利

JPS58153074A MANUFACTURE OF REFRIGERATOR BOX BODY 失效
公开(公告)号：JPS58153074A
公开(公告)日：1983-09-10
申请号：JP3386782
申请日：1982-03-05
申请人： HITACHI LTD
发明人： NAKA REIJI , SHIMADA SEIJI , KUROISHI KAZUYOSHI , GOTOU KATSUHIKO
IPC分类号： F25D23/06

9. 发明专利

JPS5899333A MANUFACTURE OF CRUSHED GOOD BAGGED 失效
公开(公告)号：JPS5899333A
公开(公告)日：1983-06-13
申请号：JP19452881
申请日：1981-12-04
申请人： HITACHI LTD
发明人： SHIBATA KATSUO , NAKA REIJI , SAOTOME WATARU , SHIMADA SEIJI , GOTOU KATSUHIKO
IPC分类号： B65B61/00 , B65B61/24 , B65B63/02

10. 发明专利

JPH0522151B2 失效
公开(公告)号：JPH0522151B2
公开(公告)日：1993-03-26
申请号：JP11860982
申请日：1982-07-09
申请人： HITACHI LTD
发明人： NAKA REIJI , GOTO KATSUHIKO , KUROISHI KAZUYOSHI , SHIMADA SEIJI
IPC分类号： F25D23/08 , B29B7/00 , B29C39/00 , B29C39/10 , B29C39/24 , B29C39/26

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