公开(公告)号：DE3852972D1

公开(公告)日：1995-03-23

申请号：DE3852972

申请日：1988-06-08

Applicant: BRIDGESTONE CORP

Inventor： ISHII SEIJI ,  FUKUDA HIROYA ,  OHASHI TAKASHI

IPC: B29B11/06 ,  B29B11/14 ,  B29B11/16 ,  B29C44/32 ,  B29C51/00 ,  C08J9/40 ,  B29C44/00

公开(公告)号：DE69000677T2

公开(公告)日：1993-04-29

申请号：DE69000677

申请日：1990-02-28

Applicant: BRIDGESTONE CORP

Inventor： FUKUDA HIROYA ,  AKOU MASAYUKI ,  SAWA EIJI ,  OHASHI TAKASHI

IPC: C08J9/02 ,  C08G18/00 ,  C08G18/48 ,  C08G101/00 ,  C08K3/04 ,  C08L75/00 ,  C08L75/04 ,  H01B1/24 ,  C08J9/00

Abstract: An electrically conductive flexible polyurethane foam having fine and homogeneous cells, being low in swelling by water and superior in dimensional stability can be prepared by mixing an isocyanate terminated urethane prepolymer holding isocyanate monomers therein prepared by reacting polyether polyol(s) holding poly(oxypropylene) chains and not more than 30 weight% of poly(oxyethylene) chains therein with a stoichiometrically excessive amount of an isocyanate component with an aqueous dispersion of electrically conductive carbon particles containing water in excess of the stoichiometric amount necessary to react with the isocyanate monomers in the urethane prepolymer and foaming the mixture in a closed mold having a capacity smaller than the volume of a foam which can be obtained by conducting the foaming of the said mixture of the urethane prepolymer and the aqueous dispersion of electrically conductive carbon particles freely under atmospheric pressure.

公开(公告)号：DE69000677D1

公开(公告)日：1993-02-11

申请号：DE69000677

申请日：1990-02-28

Applicant: BRIDGESTONE CORP

Inventor： FUKUDA HIROYA ,  AKOU MASAYUKI ,  SAWA EIJI ,  OHASHI TAKASHI

IPC: C08J9/02 ,  C08G18/00 ,  C08G18/48 ,  C08G101/00 ,  C08K3/04 ,  C08L75/00 ,  C08L75/04 ,  H01B1/24 ,  C08J9/00

Abstract: An electrically conductive flexible polyurethane foam having fine and homogeneous cells, being low in swelling by water and superior in dimensional stability can be prepared by mixing an isocyanate terminated urethane prepolymer holding isocyanate monomers therein prepared by reacting polyether polyol(s) holding poly(oxypropylene) chains and not more than 30 weight% of poly(oxyethylene) chains therein with a stoichiometrically excessive amount of an isocyanate component with an aqueous dispersion of electrically conductive carbon particles containing water in excess of the stoichiometric amount necessary to react with the isocyanate monomers in the urethane prepolymer and foaming the mixture in a closed mold having a capacity smaller than the volume of a foam which can be obtained by conducting the foaming of the said mixture of the urethane prepolymer and the aqueous dispersion of electrically conductive carbon particles freely under atmospheric pressure.

公开(公告)号：GB2237807A

公开(公告)日：1991-05-15

申请号：GB9023513

申请日：1990-10-29

Applicant: BRIDGESTONE CORP

Inventor： ISHII SEIJI ,  OKADA TOKUO ,  OHTA HIROSHI ,  FUKUDA HIROYA ,  OHASHI TAKASHI ,  KONDO OSAMU

IPC: C08J9/36 ,  C08L23/02

Abstract: A polyolefin foam sheet is made using additionally a resin varnish (e.g. rosin, shellac, alkyd, phenolic or coumarone-indene resins) which can be coated onto the foamable base sheet before heating to foam it, and/or incorporated into the polyolefin resin composition of the base sheet, and/or coated onto the sheet after foaming. The use of such varnish may confer good thermal resistance and surface wettability of the resulting foamed sheet.

公开(公告)号：CA1286587C

公开(公告)日：1991-07-23

申请号：CA563975

申请日：1988-04-13

Applicant: BRIDGESTONE CORP

Inventor： SAWA EIJI ,  MORIYA SUSUMU ,  FUKUDA HIROYA ,  OHASHI TAKASHI

IPC: B32B5/18 ,  B32B5/24

Abstract: A laminated product for use as motorcar seats, carpets, blankets, sofas, chair seats and the like, excellent in continuation of antistatic effect, characterized in that polyurethane foam having antistatic effect is laminated on the back side of a skin material to add antistatic capacity to the surface of the skin material without losing the comfortable feeling thereof.

公开(公告)号：DE4033312A1

公开(公告)日：1991-04-25

申请号：DE4033312

申请日：1990-10-19

Applicant: BRIDGESTONE CORP

Inventor： ISHII SEIJI ,  OKADA TOKUO ,  FUKUDA HIROYA ,  OHASHI TAKASHI

IPC: C08G18/08 ,  C08J9/02 ,  C08J9/04 ,  C08J9/06

Abstract: A method producing a low-density flexible polyurethane foam comprising stirring a starting mixture containing a polyhydroxy compound, a polyisocyanate, a foaming agent and a catalyst to thereby foam the mixture, in which a foaming agent selected from the group consisting of water, formic acid and its salts is used in an amount of at least 10% by weight as water equivalent per 100 parts by weight of the polyhydroxy compound, and the mixture is stirred at 15 DEG C. or below by previously adjusting the temperature of the mixture to 15 DEG C. or below and under a highly catalytic activity.

公开(公告)号：DE3767779D1

公开(公告)日：1991-03-07

申请号：DE3767779

申请日：1987-06-08

Applicant: BRIDGESTONE CORP

Inventor： ISHIWAKA TAKUMI ,  ANDOH YUKIO ,  YAMAGUCHI MICHIYUKI ,  SUZUKI SHOSUKE ,  EGASHIRA YOSHINORI ,  YOKOBORI TAKEO ,  OHASHI TAKASHI

IPC: B41J11/04 ,  B41J11/053

Abstract: There is provided a platen roll which is low in generation of noise while keeping superior printability which comprises a shaft (1) and a single layer (4a) of rubber composition concentrically and tightly applied around said shaft, or two layers comprising an inner layer (5a) of a resin concentrically and tightly applied around a shaft (1) and an outer layer (4b) of a rubber composition concentrically and tightly applied around the inner layer (5a).

公开(公告)号：GB2192635A

公开(公告)日：1988-01-20

申请号：GB8708471

申请日：1987-04-09

Applicant: BRIDGESTONE CORP

Inventor： AKO MASAYUKI ,  DOBASHI MASAFUMI ,  FUKUDA HIROYA ,  OHASHI TAKASHI

IPC: C08G18/00 ,  C08G18/08 ,  C08J9/00 ,  C08L75/00 ,  C08L75/08 ,  C08J9/02

Abstract: A process for producing asphalt-blended polyurethane foams which comprises introducing starting foaming materials for polyurethane foams containing a polyoxyalkylene polyol and an organic isocyanate either as respective individual ingredients or as a prepolymer into an agitation mixing chamber of a foaming apparatus, while introducing a previously heated and melted asphalt into the agitation mixing chamber of the foaming apparatus, mixing the starting foaming material for the polyurethane foams and the heated and melted asphalt and then foaming them. Asphalt-blended polyurethane foams can be obtained simply and efficiently and they are excellent in general physical properties, sound/vibration characteristics and are suitable as sealing materials and sound-proofing or vibration-damping materials.

公开(公告)号：DE3852972T2

公开(公告)日：1995-09-21

申请号：DE3852972

申请日：1988-06-08

Applicant: BRIDGESTONE CORP

Inventor： ISHII SEIJI ,  FUKUDA HIROYA ,  OHASHI TAKASHI

IPC: B29B11/06 ,  B29B11/14 ,  B29B11/16 ,  B29C44/32 ,  B29C51/00 ,  C08J9/40 ,  B29C44/00

公开(公告)号：DE68904255D1

公开(公告)日：1993-02-18

申请号：DE68904255

申请日：1989-06-23

Applicant: BRIDGESTONE CORP

Inventor： ISHIWAKA TAKUMI ,  HASEGAWA HAJIME ,  OHASHI TAKASHI

IPC: C08J9/04 ,  C08G18/00 ,  C08G18/32 ,  C08G18/40 ,  C08G18/65 ,  C08J9/00 ,  C08K5/34 ,  C08K5/3492 ,  C08L75/00 ,  C08L75/04

Abstract: A process for producing a flexible polyurethane foam by reacting a polyhydroxy compound and a polyisocyanate compound in the presence of a blowing agent. The polyhydroxy compound is one in which an aldehyde condensation polymer has been formed by polycondensation and dispersed such that it accounts for, preferably, from 5 to 30 wt% of the total amount of the polyhydroxy compound, and adding as a flame retardant a melamine powder preferably in an amount of from 5 to 100 parts by weight per 100 parts by weight of polyhydroxy compound. The resulting foams combine good flame retardance with high hardness and compressive strength.