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1. 发明专利

JP2000063473A FLEXIBLE POLYURETHANE FOAM AND ITS PREPARATION 失效
公开(公告)号：JP2000063473A
公开(公告)日：2000-02-29
申请号：JP23460898
申请日：1998-08-20
申请人： MITSUI CHEMICALS INC
发明人： TSUTSUI HIROKI , SAKAI SEIJIRO , OKUBO KAZUHIKO , SASAOKA KUNIO
IPC分类号： C08J9/02 , C08G18/48 , C08G101/00 , C08K5/10 , C08L75/04
摘要： PROBLEM TO BE SOLVED: To obtain a flexible polyurethane foam which is lightweight and excellent in vibration-damping property by employing a mixture of a polyether triol with a polyether diol each having a specific mol.wt., an organic polyisocyanate composition and a plasticizer. SOLUTION: The objective flexible polyurethane foam is formed from an active hydrogen compound, an organic polyisocyanate composition, a blowing agent, a crosslinking agent, a foam stabilizer, a catalyst, a plasticizer and other additives. The active hydrogen compound is a mixture comprising (A) a polyether triol having a hydroxyl equivalent of 700-5,000 and (B) a polyether diol having a hydroxyl equivalent of more than 1,000 and not more than 6,000, the wt. ratio of A/B being 80/20-10/90. As the plasticizer is preferable a phthalate ester, which is employed in an mount of about 5-35 pts.wt. based on 100 pts.wt. of the active hydrogen compound. The vibration transmissibility of the flexible polyurethane foam is -5 dB or less at a frequency of 250-350 Hz and -10 dB or less at a frequency of 400-450 Hz.

2. 发明专利

JPH10182777A SKIN-INTEGRAL HEAD REST 失效
公开(公告)号：JPH10182777A
公开(公告)日：1998-07-07
申请号：JP34475296
申请日：1996-12-25
申请人： MITSUI CHEMICALS INC
发明人： KOGA NOBUSHI , YONEYAMA MASAHIRO , TSUTSUI HIROKI , SASAOKA KUNIO , SAKAI SEIJIRO
IPC分类号： B60N2/48 , B60R21/055 , C08G18/00 , C08G18/10 , C08G101/00
摘要： PROBLEM TO BE SOLVED: To produce the subject head rest capable of reducing the amount of an injected urethane and improving the urethane leakage, shape retaining properties, touch, etc., by using a specific polyisocyanate, a polyol, water, etc., as raw materials. SOLUTION: This head rest is produced by using (A) a polyisocyanate which is a prepolymer, modified with a polytetramethylene glycol having 1,000-3,000 molecular weight and having 23-30% NCO content, (B) a polyol,(C) water and (D) other auxiliaries as raw materials. The component C is preferably used in an amount of 6.0-7.0 pts.wt. based on 100 pts.wt. component B to carry out expansion molding. The resultant head rest is preferably obtained by performing the expansion molding so as to afford 0.035-0.040g/cm molding density of the urethane foam. Thereby, the objective good effects can be expected.

3. 发明专利

JPH11116655A FLEXIBLE POLYURETHANE FOAM AND ITS PRODUCTION 失效
公开(公告)号：JPH11116655A
公开(公告)日：1999-04-27
申请号：JP28479897
申请日：1997-10-17
申请人： MITSUI CHEMICALS INC
发明人： TSUTSUI HIROKI , SAKAI SEIJIRO , SASAOKA KUNIO , OKUBO KAZUHIKO
IPC分类号： C08J9/02 , C08G18/00 , C08G18/48 , C08G101/00
摘要： PROBLEM TO BE SOLVED: To obtain a light and flexible polyurethane foam having excellent damping properties such as

4. 发明专利

JPH11116654A FLEXIBLE POLYURETHANE FOAM AND ITS PRODUCTION 失效
公开(公告)号：JPH11116654A
公开(公告)日：1999-04-27
申请号：JP28479797
申请日：1997-10-17
申请人： MITSUI CHEMICALS INC
发明人： TSUTSUI HIROKI , OBATA MASASHI , OKUBO KAZUHIKO , SASAOKA KUNIO , SAKAI SEIJIRO
IPC分类号： C08J9/02 , C08G18/00 , C08G18/48 , C08G18/76 , C08G101/00
摘要： PROBLEM TO BE SOLVED: To obtain a light ( apparent density) and flexible urethane form having excellent damping properties. SOLUTION: This flexible urethane foam is the one obtained by carrying out the reaction of an activated hydrogen compound with an organic polyisocyanate composition in the presence of a foaming agent, a crosslinking agent, a foam stabilizer, a catalyst and other additives. The activated hydrogen compound is a mixture of (A) a polyether triol having 700-5000 hydroxyl equivalent, and (B) a polyether diol having 1000-6000 hydroxyl equivalent regulated so that the mixing ratio of the components A/B may be (80/20)-(10/90), and the organic polyisocyanate composition is the mixture of (C) a polymethylene polyphenyl isocyanate and (D) 2,4- and/or 2,6-tolylene diisocyanate regulated so that the mixing ratio of the components C/D may be (65/35)-(80/20). The foam also has

5. 发明专利

JPH10315238A FLOWING BEHAVIOR ANALYZING DEVICE FOR FOAMABLE RESIN 失效
公开(公告)号：JPH10315238A
公开(公告)日：1998-12-02
申请号：JP13234497
申请日：1997-05-22
申请人： MITSUI CHEMICALS INC
发明人： EGUCHI HAJIME , SASAOKA KUNIO
IPC分类号： B29C33/00 , B29C39/22 , B29K105/04
摘要： PROBLEM TO BE SOLVED: To obtain a foaming starting point by fixedly arranging in a row a plurality of reflection type optical sensors at an upper transparent portion of a mold and input pulse signals generated when a resin passes directly under the sensors into a computer for processing so as to measure the foaming speed in a real-time fashion. SOLUTION: Reflection type optical sensors R0 to R8 are mounted on an upper transparent mold of a metal mold 1 and a resin is injected from an injection port 2. The mounting position of the sensor may be at the position of the injection port 2 or may be freely changed to other positions. When a foamable resin is started to be injected from the injection port 2, the computer starts to collect data, pulse signals are generated when the resin passes directly under the sensors R0 to R8, and the singals so generated are then fed into the computer. The computer obtains an approximate equation representing the drift velocity of the resin based on the pulse signals so fed and then obtains a foaming starting point using the equation so obtained.

6. 发明专利

JP2001270929A THERMOSETTING POLYURETHANE RESIN AND METHOD FOR PRODUCING THE SAME 失效
公开(公告)号：JP2001270929A
公开(公告)日：2001-10-02
申请号：JP2000319511
申请日：2000-10-19
申请人： MITSUI CHEMICALS INC
发明人： HASEYAMA RYUJI , YOSHIDA YOSHIO , TSUTSUI HIROKI , KOGA NOBUSHI , SASAOKA KUNIO , NISHIGUCHI DAISUKE , ITO NAOTO , SAKAI SEIJIRO
IPC分类号： C08J5/18 , C08G18/12 , C08G18/79 , C08K3/00 , C08K5/00 , C08K5/3475 , C08L75/04
摘要： PROBLEM TO BE SOLVED: To provide a polyurethane resin which has scratch resistance, capability to adhere to a polyurethane foam pad, and softness to the touch and does not generate harmful substances such as dioxins when incinerated and a method for conveniently producing the same in a simple way. SOLUTION: This thermosetting polyurethane resin is characterized in that (1) the Shore A hardness is in the range of 50-85; (2) the flexural modulus is in the range of 8-80 (MPa); (2) the elongation is in the range of 130-600 (%); and (4) no fusion mark is observed after the resin is exposed to an atmosphere of 110 deg.C for 1,000 h.

7. 发明专利

JP2001233927A RESIN PREMIX AND POLYURETHANE RESIN 失效
公开(公告)号：JP2001233927A
公开(公告)日：2001-08-28
申请号：JP2000048433
申请日：2000-02-25
申请人： MITSUI CHEMICALS INC
发明人： NISHIGUCHI DAISUKE , TSUTSUI HIROKI , KOGA NOBUSHI , YOSHIDA YOSHIO , SASAOKA KUNIO , HASEYAMA RYUJI , SAKAI SEIJIRO
IPC分类号： C08K3/00 , C08G18/22 , C08G18/48 , C08L75/08
摘要： PROBLEM TO BE SOLVED: To provide a resin premix permitting extension of an open time of a mixture thereof with an organic polyisocyanate (A), curing fast at a high temperature and therefore capable of giving a polyurethane resin efficiently in a simple operation. SOLUTION: The resin premix for manufacturing a polyurethane resin by reacting it with an organic polyisocyanate compound (A) comprises a polyol compound (B) and nickel acetylacetonate or a derivative thereof (C), and a mixture, obtained by mixing the organic polyisocyanate compound (A) with the resin premix so that the NCO index is within the range of 0.6-1.2, remains flowable after left at 30 deg.C for 3 hr and cures within 5 min when heated at 120 deg.C or higher. The polyurethane resin is obtained by reacting the resin premix with the organic polyisocyanate compound (A).

8. 发明专利

JP2000290344A ENERGY ABSORBING SOFT POLYURETHANE FOAMED ARTICLE AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2000290344A
公开(公告)日：2000-10-17
申请号：JP9960599
申请日：1999-04-07
申请人： MITSUI CHEMICALS INC
发明人： OBATA MASASHI , TSUTSUI HIROKI , SAKAI SEIJIRO , OKUBO KAZUHIKO , SASAOKA KUNIO
IPC分类号： C08G18/08 , C08G18/48 , C08G101/00
摘要： PROBLEM TO BE SOLVED: To provide a soft polyurethane foam showing low rebound resilience and good durability without crushing and a method for manufacturing thereof. SOLUTION: An active hydrogen-containing compound used for producing a soft polyurethane foam by reacting an organic polyisocyanate (A) with the active hydrogen-containing compound (B) and a foaming agent in the presence of a catalyst is a mixture of a polyether polyol (b1) having a hydroxyl value of 40 mgkOH/g to 120 mgkOH/g, an average functionality of 2 to 4 and a molar ratio of an alkylene oxide having not less than 3 carbon atoms to ethylene oxide in addition polymerization of 50/50 to 10/90, a polyether polyol (b2) having a hydroxyl value of 410 mgkOH/g to 600 mgkOH/g and an average functionality of 2 to 8 and a polyether polyol (b3) having a hydroxyl value of 20 mgkOH/g to 170 mgkOH/g and an average functionality of 2 to 4.

9. 发明专利

JP2000212241A FLEXIBLE POLYURETHANE FOAM AND ITS PRODUCTION 失效
公开(公告)号：JP2000212241A
公开(公告)日：2000-08-02
申请号：JP1920699
申请日：1999-01-28
申请人： MITSUI CHEMICALS INC
发明人： TSUTSUI HIROKI , SAKAI SEIJIRO , OKUBO KAZUHIKO , SASAOKA KUNIO
IPC分类号： C08J9/02 , C08G18/48 , C08G101/00
摘要： PROBLEM TO BE SOLVED: To obtain a lightweight polyurethane foam having excellent vibration- damping performances by foaming a composition comprising an active hydrogen compound mixture comprising a plurality of polyether polyols each having a specified OH functionality, a specified weight-average molecular weight, and a specified ethylene oxide content in a specified mixing ratio by weight, an organic polyisocyanate composition, a blowing agent, a crossliking agent, a foam stabilizer, and a catalyst. SOLUTION: The active hydrogen compound mixture comprises (A) a polyether polyol having an OH functionality of 2, a weight-average molecular weight of 2,000-20,000, and an ethylene oxide content of 5-30 wt.%, (B) a polyether polyol having an OH functionality of 3, a weight-average molecular weight of 2,000-20,000, and an ethylene oxide content of 5-30 wt.%, and (C) a polyether polyol having an OH functionality of 2-4, a weight-average molecular weight of 2,000-10,000, and an ethylene oxide content of 50-80 wt.% in an A/B/C mixing ratio of (20-60)/(10-50)/(10-50) by weight. It is desirable that the foam obtained by using the active hydrogen compound mixture has a vibration transmission rate (factor) of -10 dB or below at a vibration frequency of 500-1,000 Hz.

10. 发明专利

JP2000109536A FLEXIBLE POLYURETHANE FOAM AND INTERIOR MATERIAL FOR CAR USING THE SAME 失效
公开(公告)号：JP2000109536A
公开(公告)日：2000-04-18
申请号：JP28682598
申请日：1998-10-08
申请人： TOKAI CHEMICAL IND , MITSUI CHEMICALS INC
发明人： NISHIDA KIYOMI , OBATA MASASHI , SASAOKA KUNIO
IPC分类号： A47C7/38 , A47C7/40 , B32B5/18 , B32B27/40 , C08G18/48 , C08G101/00 , C08J9/02
摘要： PROBLEM TO BE SOLVED: To obtain a flexible polyurethane foam which has a high shock- absorbing property and can keep good sense of touch around room and low temperatures, and is useful as an interior material for car by reacting an organic polyisocyanate with a specific polyol and so on, followed by foaming so as to have specific properties. SOLUTION: This foam is obtained by reacting (A) an organic polyisocyanate component (e.g. diphenylmethanediisocyanate) with (B) a polyol component consisting of a polyoxyalkylenepolyol having an average functional group number of 2-8 and a hydroxyl equivalent of 900-3,300 and (C) a compound represented by the formula ((n), (x), and (y) are each 0-20; x+y=0 to 20) (preferably, nonlyphenol) at a C/B ratio of 0.00005-0.001 mol/g, followed by foaming so as to have a repulsion elasticity of 30% or smaller and a compression load temperature dependence of 0.030 kg/cm2 or smaller as expressed by the difference between 25% compression load values at -20 deg.C and 20 deg.C.

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