公开(公告)号：SG34248A1

公开(公告)日：1996-12-06

申请号：SG1995000919

申请日：1995-07-21

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KOGA NABUHITO ,  INOUE HIROSHI ,  SAKAI MASAMI ,  UEDA HIROSHI

IPC: B62D1/04 ,  C08G18/08 ,  C08J9/34

公开(公告)号：JPH08176251A

公开(公告)日：1996-07-09

申请号：JP32041894

申请日：1994-12-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KOGA NOBUSHI ,  YOKODE SEIJI ,  INOUE HIROSHI ,  SAKAI MASAMI

IPC: C08J9/02 ,  C08G18/00 ,  C08G18/08 ,  C08G18/18 ,  C08G18/48 ,  C08G18/76 ,  C08J9/14

Abstract: PURPOSE: To produce an integral-skin polyurethane foam which cures in a short time without causing swelling on demolding by pouring a reaction mixture contg. an arom. polyisocyanate, a high-molecular isocyanate-reactive compd., and a specific blowing agent into a mold and allowing the mixture to foam to a specified density. CONSTITUTION: A reaction mixture is prepd. by mixing an arom. polyisocyanate, a high-molecular isocyanate-reactive compd., and a blowing agent comprising a tert. amine (e.g. 1-isobutyl-2-methylimidazole) salt of an acid selected from among phosphoric acid and its derivatives having a mol.wt. of 98-1,150, boric acid and its esters having a mol.wt. of 61-146, and aliph. carboxylic acids having a mol.wt. of 46-300, and if necessary a crosslinker, a catalyst, another blowing agent, a foam stabilizer, and other additives. The mixture is poured into a mold and allowed to foam, giving an integral-skin polyurethane foam having a density of 0.3-0.8g/cm .

公开(公告)号：JPH06206969A

公开(公告)日：1994-07-26

申请号：JP396393

申请日：1993-01-13

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SASAOKA KUNIO ,  KUMAZAWA TSUTOMU ,  SAKAI MASAMI ,  KURODA TATSUYA

IPC: C08G18/48 ,  C08G18/50 ,  C08G101/00

Abstract: PURPOSE:To obtain a semirigid polyurethane foam having decreased amine catalyst concentration, improved resistance to discoloration, color-fading and deterioration of the skin layer and excellent productivity and useful for interior trim for automobile, etc., by reacting a polyisocyanate with water, an assistant and a specific polyol at specific ratios. CONSTITUTION:The foam is produced by reacting (A) a polyisocyanate with (B) a polyol such as ethylene glycol, (C) water, (D) other assistants such as foam stabilizer and (E) 5-80 pts.wt. (based on 100 pts.wt. of total polyol) of a polyether polyol having a hydroxyl value of 24-55mgKOH/g and obtained by using a compound of formula (R1 to R3 are 1-3C lower alkyl or alkenyl; n is 0-3) such as trimethyldiethylenetriamine as a base agent.

公开(公告)号：JPH05186551A

公开(公告)日：1993-07-27

申请号：JP34465891

申请日：1991-12-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SAKAI MASAMI ,  INOUE HIROSHI ,  MURATA MASAYUKI ,  SASAOKA KUNIO

IPC: B29C45/00 ,  C08G18/48 ,  C08G101/00 ,  C08J9/14 ,  C08L75/04

Abstract: PURPOSE:To obtain the title foam which is elastic and has a good hand by using a low-boiling fluorocarbon blowing agent outside the legal regulation by reacting an aromatic polyisocyanate with a specified polyol, a specified cross-linking agent and a specified blowing agent as the essential components. CONSTITUTION:The title foam is obtained by reacting an aromatic polyisocyanate, a polyol prepared by the addition reaction of an active hydrogen compound of an average functionality of 2-4 with propylene oxide and ethylene oxide and having a specified hydroxyl value, a specified ethylene oxide content and a specified terminal prim. hydroxyl rate or a polymer polyol prepared by grafting an ethylenically unsaturated monomer onto the above polyol, a cross-linking agent which is a mixture of specified amounts of an alkanolamine, a polyalkylene glycol and a polyoxyalkylene glycol each of which has a specified hydroxyl value, and a blowing agent comprising a hydrochlorofluorocarbon of a specified boiling point and/or a hydrofluorocarbon (of a specified boiling point) as the essential components with a catalyst, a foam stabilizer, etc., as optional components.

公开(公告)号：JPH03179017A

公开(公告)日：1991-08-05

申请号：JP31656489

申请日：1989-12-07

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SASAOKA KUNIO ,  SAKAI MASAMI ,  MURATA MASAYUKI

IPC: C08J9/02 ,  C08G18/16 ,  C08G18/48 ,  C08G18/76 ,  C08G101/00

Abstract: PURPOSE:To obtain a low-density molding of a semirigid foam of a low void content and low cell roughening by forming a semirigid foam by using a starting material containing a specified organic polyisocyanate, a specified polyether polyol/polyol mixture and a specified mixture of tert. amines. CONSTITUTION:A process for producing a semirigid polyurethane foam by using an organic polyisocyanate, an active hydrogen compound, water, a foam stabilizer and a catalyst as starting materials, wherein an organic polyisocyanate of an NCO content of 25.0-31.0% and a viscosity of 100-3000cP at 25 deg.C obtained by reacting polymethylenepolyphenyl polyisocyanate with a polyol, a mixture of a polyether polyol of a functionality of 2-4 and a hydroxyl value of 24-55mgKOH/g with a polyol of a functionality of 2-4 and a hydroxyl value of 400-2000mgKOH/g, and a mixture of a tert. amine of formula l with a tert. amine of formula II as a catalyst are used as the starting materials.

公开(公告)号：JPH08176250A

公开(公告)日：1996-07-09

申请号：JP32041794

申请日：1994-12-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YOKODE SEIJI ,  KOGA NOBUSHI ,  INOUE HIROSHI ,  SAKAI MASAMI

IPC: C08J9/02 ,  C08G18/00 ,  C08G18/08 ,  C08G18/48 ,  C08G18/76 ,  C08J9/14

Abstract: PURPOSE: To produce an integral-skin polyurethane foam which cures in a short time without causing swelling even at the free-blow density by pouring a reaction mixture contg. an arom. polyisocyanate, a high-molecular isocyanate- reactive compd., and a specific blowing agent into a mold. CONSTITUTION: A reaction mixture is prepd. by mixing an arom. polyisocyanate, a high-molecular isocyanate-reactive compd. having an OH value of 24-55mgKOH /g, an ethylene oxide content of 10-25wt.%, and a ratio of primary terminal OH groups to all terminal OH groups of 70-95mol%, a blowing agent comprising phosphoric acid and/or its compd., and if necessary a cross-linker, a catalyst, another blowing agent, a foam stabilizer, and other additives. The mixture is poured into a mold and allowed to foam, giving an integral-skin polyurethane foam having a density of 0.3-0.8g/cm .

公开(公告)号：JPH07278332A

公开(公告)日：1995-10-24

申请号：JP7733194

申请日：1994-04-15

Applicant: MITSUI TOATSU CHEMICALS

Inventor： INOUE HIROSHI ,  KOGA NOBUSHI ,  UEDA HIROSHI ,  SAKAI MASAMI

IPC: C08J9/02 ,  C08G18/00 ,  C08G18/08 ,  C08G18/40

Abstract: PURPOSE:To produce a polyurethane foam having a low free blow density, free from a blister of a foam and excellent in moldability with an excellent productivity even when carbonic acid gas is used as a foaming agent without using a (substitute) flon by using a specified inflating agent. CONSTITUTION:(A) An aromatic polyisocyanate (preferably, e.g. polymethylene- polyphenyl isocyanate containing polynuclear substances of >= trinuclear substance in an amount of 260wt.%), (B) a high-molecular compound reactive with an isocyanate (e.g. a polyol synthesized by additional polymerization of ethylene oxide to propylene glycol), (C) an inflating agent composed of a salt between an organic carboxylic acid (preferably formic acid, etc.) and a tert-amine (e.g. 1-methylimidazole) and, if necessary, a cross-linking agent, a catalyst, a foaming agent, a foam stabilizer and other assistant agents are blended. The resultant mixture is charged into a mold to obtain the objective product having 0.3 to 0.8g/cm molding density. In addition, reaction injection molding method is preferably used as the molding method.

公开(公告)号：JPH07207051A

公开(公告)日：1995-08-08

申请号：JP389594

申请日：1994-01-19

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SASAOKA KUNIO ,  UEDA HIROSHI ,  SAKAI MASAMI ,  YOSHIDA YOSHIO ,  KUMAZAWA TSUTOMU

IPC: C08J9/02 ,  C08G18/00 ,  C08G18/08 ,  C08G18/09 ,  C08G18/65 ,  C08G101/00

Abstract: PURPOSE:To produce a semirigid urethane foam which is non-crashing and is improved in touch and moldability by reacting a specified isocyanate component with a polyol and a water- -containing resin component. CONSTITUTION:An aromatic polyisocyanate (A) is reacted with a polyol (B) of a molecular weight of 700-12000 and a mono-ol (C) of a molecular weight of 35-1000 in such amounts to give a C/A equivalent ratio of 0.01-0.2 and a B/A equivalent ratio of 0.01-0.2 to obtain an isocyanate component. This component is reacted with a polyol, a resin component containing water and other adjuvants and an amine catalyst for expansion to obtain a semirigid urethane foam of a density of 0.03-0.08g/cm .

公开(公告)号：JPH072971A

公开(公告)日：1995-01-06

申请号：JP14737193

申请日：1993-06-18

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SAKAI MASAMI ,  MURATA MASAYUKI ,  INOUE HIROSHI

IPC: B29C45/00 ,  B29K75/00 ,  C08G18/00 ,  C08G18/08 ,  C08G18/09 ,  C08G18/48 ,  C08G18/65 ,  C08G101/00

Abstract: PURPOSE:To obtain an integral-skin-clad polyurethane foam which is expanded with water only, has a low surface hardness and does not blister when demolded by performing a process for obtaining a polyurethane foam by pouring an aromatic polyisocyanate, a high-molecular-weight NCO-reactive compound, a cross- linking agent, water and a fatty acid methyl ester as a viscosity reducing agent in the presence of a catalyst into a mold, wherein the amount of the fatty acid methyl ester added is specified. CONSTITUTION:A process for obtaining the polyurethane foam by pouring an aromatic polyisocyanate, a high-molecular-weight NCO-reactive compound (A) (e.g. polymer polyol), a cross-linking agent (e.g. diethylene glycol), water as a blowing agent, a fatty acid methyl eater desirably one having 6-20 carbon atoms in the fatty acid moiety as a viscosity reducing agent in the presence of a catalyst (e.g. triethylenediamine) into a mold, wherein the amount of the fatty acid methyl ester added is 5-20 pts.wt. per 100 pts.wt. compound A, is provided. As a result, the objective foam having a density of 0.3-0.8g/cm is obtained.

公开(公告)号：JPH03195717A

公开(公告)日：1991-08-27

申请号：JP33264489

申请日：1989-12-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SAKAI MASAMI ,  SASAOKA KUNIO ,  MURATA MASAYUKI

IPC: C08J9/02 ,  C08G18/10 ,  C08G18/42 ,  C08G18/48 ,  C08G101/00 ,  C08L75/04

Abstract: PURPOSE:To improve adhesivity to skin material in obtaining a rigid urethane foam with a skin material by blending a polyisocyanate with a polyol, water, a catalyst and a foam stabilizer, bringing the blend into contact with a skin material and subjecting to foam molding. CONSTITUTION:A prepolymer of an aromatic polyisocyanate (e.g. 2,4-tolylene diisocyanate) and a polyester polyol (e.g. reaction product of succinic acid and neopentyl glycol) or a polyisocyanate containing the prepolymer is blended with a polyol (preferably comprising 80-95wt.% polyol having 2-8 functional groups and 300-700mgKOH hydroxyl numbers and 20-5wt.% polyol having 2-4 functional groups and 700-2,000mgKOH hydroxyl numbers), water, a catalyst, a foam stabilizer and, if necessary, a halogenated hydrocarbon-based blowing agent and a filler, brought into contact with a skin material and subjected to foam molding to give a rigid urethane foam with a skin material.