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公开(公告)号：DE3236452C2
公开(公告)日：1993-11-04
申请号：DE3236452
申请日：1982-10-01
Applicant: DAICEL CHEM
Inventor： WATANABE SHOJI , MIHO TAKUYA , NAKASHIMA NAOKI , IKEMOTO YOSHIYUKI
Abstract: A polyurethane having excellent elastic recovery is obtained by reacting an organic diisocyanate with a polycaprolactone polyester-diol prepared from a dihydric alcohol, a dibasic acid, an ester thereof or an anhydride thereof and epsilon -caprolactone or/and hydroxycaproic acid and having a hydroxyl value of 35 to 150 KOH mg/g and a content of epsilon -caprolactone and hydroxycaproic acid of 69 to 95% by weight.
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公开(公告)号：GB2162527B
公开(公告)日：1988-04-27
申请号：GB8519177
申请日：1985-07-30
Applicant: DAICEL CHEM
Inventor： MURAU TAKAAKI , WATANABE SHOJI , INOUE KIMIO , ISOBE TOMOHISA , NAKASHIMA NAOKI , MIHO TAKUYA , IKEMOTO YOSHIYUKI
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公开(公告)号：GB2108137A
公开(公告)日：1983-05-11
申请号：GB8228039
申请日：1982-10-01
Applicant: DAICEL CHEM
Inventor： WATANABE SHOJI , MIHO TAKUYA , NAKASHIMA NAOKI , IKEMOTO YOSHIYUKI
IPC: C08G18/42
Abstract: A polyurethane having excellent elastic recovery is obtained by reacting an organic diisocyanate with a polycaprolactone polyester-diol prepared from a dihydric alcohol, a dibasic acid, an ester thereof or an anhydride thereof and epsilon -caprolactone or/and hydroxycaproic acid and having a hydroxyl value of 35 to 150 KOH mg/g and a content of epsilon -caprolactone and hydroxycaproic acid of 69 to 95% by weight.
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公开(公告)号：DE3236452A1
公开(公告)日：1983-05-11
申请号：DE3236452
申请日：1982-10-01
Applicant: DAICEL CHEM
Inventor： WATANABE SHOJI , MIHO TAKUYA , NAKASHIMA NAOKI , IKEMOTO YOSHIYUKI
Abstract: A polyurethane having excellent elastic recovery is obtained by reacting an organic diisocyanate with a polycaprolactone polyester-diol prepared from a dihydric alcohol, a dibasic acid, an ester thereof or an anhydride thereof and epsilon -caprolactone or/and hydroxycaproic acid and having a hydroxyl value of 35 to 150 KOH mg/g and a content of epsilon -caprolactone and hydroxycaproic acid of 69 to 95% by weight.
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公开(公告)号：DE68921178D1
公开(公告)日：1995-03-23
申请号：DE68921178
申请日：1989-11-29
Applicant: DAICEL CHEM
Inventor： NAKANISHI MICHIO , MIHO TAKUYA
Abstract: A composition for producing a metallic sintered body consisting essentially of a mixture of a powdered metal having an average particle size of not more than 50 microns with a lactone resin having a relative viscosity value in the range of from 1.15 to 3.20 is disclosed. The composition has excellent properties such as mechanical strength of a green body thereof, and only a short time being necessary for removal or elimination of binder in comparison with conventional sintering compositions. Furthermore, the binder in the present composition is substantially composed of a single component; accordingly, manufacturing process control can be simplified by use of the lactone resin. Furthermore, a method for producing a metallic sintered body using such composition is also disclosed.
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Patent Agency Ranking
公开(公告)号：GB2162527A
公开(公告)日：1986-02-05
申请号：GB8519177
申请日：1985-07-30
Applicant: DAICEL CHEM
Inventor： MURAU TAKAAKI , WATANABE SHOJI , INOUE KIMIO , ISOBE TOMOHISA , NAKASHIMA NAOKI , MIHO TAKUYA , IKEMOTO YOSHIYUKI
Abstract: A process for producing a lactone polymer comprises reacting an ester compound synthesized from an alcohol and an acid or acid anhydride with a lactone and a ring-opening polymerization initiator. When the ester compound is a polyester the thus produced lactone polymer is effective for preventing shrinkage of thermosetting resins, particularly unsaturated polyester resins.
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公开(公告)号：DE3207062C2
公开(公告)日：1997-06-05
申请号：DE3207062
申请日：1982-02-26
Applicant: DAICEL CHEM
Inventor： WATANABE SHOJI , MIHO TAKUYA , FUJII TATSUMI
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公开(公告)号：GB2140436B
公开(公告)日：1985-06-05
申请号：GB8402048
申请日：1984-01-26
Applicant: DAICEL CHEM
Inventor： WATANABE SHOJI , MIHO TAKUYA , FUJII TATSUMI
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公开(公告)号：DE68921178T2
公开(公告)日：1995-07-20
申请号：DE68921178
申请日：1989-11-29
Applicant: DAICEL CHEM
Inventor： NAKANISHI MICHIO , MIHO TAKUYA
Abstract: A composition for producing a metallic sintered body consisting essentially of a mixture of a powdered metal having an average particle size of not more than 50 microns with a lactone resin having a relative viscosity value in the range of from 1.15 to 3.20 is disclosed. The composition has excellent properties such as mechanical strength of a green body thereof, and only a short time being necessary for removal or elimination of binder in comparison with conventional sintering compositions. Furthermore, the binder in the present composition is substantially composed of a single component; accordingly, manufacturing process control can be simplified by use of the lactone resin. Furthermore, a method for producing a metallic sintered body using such composition is also disclosed.
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公开(公告)号：GB2140436A
公开(公告)日：1984-11-28
申请号：GB8402048
申请日：1984-01-26
Applicant: DAICEL CHEM
Inventor： WATANABE SHOJI , MIHO TAKUYA , FUJII TATSUMI
Abstract: The invention provides a polyurethane comprising (a) organic diisocyanate units and (b) polycaprolactone polyol units having a narrow molecular weight distribution in which the ratio of the weight average molecular weight to the number average molecular weight is in the range of from 1.1 to 2.0 and the average molecular weight is 500 to 5,000, the units (a) and (b) being connected linearly through urethane linkages. The invention also provides a process for producing such polyurethanes.
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