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公开(公告)号：JPH10158503A
公开(公告)日：1998-06-16
申请号：JP32067797
申请日：1997-11-21
Applicant: BASF AG
Inventor： GENZ MANFRED DR , PRISSOK FRANK DR , HORN PETER DR , KRECH RUEDIGER , LEHR GERHARD , KING HORST DR
Abstract: PROBLEM TO BE SOLVED: To obtain the subject polyurethane by using a means capable of performing a thermoplastic processing without a troublesome chemical treatment by adding a crushed state of crosslinked polyurethane to a reaction product mixture. SOLUTION: A thermoplastic polyurethane is produced by reacting isocyanate with a compound reactive with the isocyanate in the presence or absence of a chain extender, a catalyst and a usual auxiliary and an additive. In the process, crosslinked polyurethane in crushed shape is added to the reaction mixture before, during and/or after the reaction. Preferably, a dimension of the crushed crosslinked polyurethane is within the range of 0.1-25mm and a weight ratio of the crushed polyurethane to the reaction mixture is (0.001:1)-(4:1), and an equivalent ratio of the isocyanate group to total or the reactive hydrogen atom is (0.9:1)-(1.5:1).
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公开(公告)号：DE19648192A1
公开(公告)日：1998-06-04
申请号：DE19648192
申请日：1996-11-21
Applicant: BASF AG
Inventor： GENZ MANFRED DR , PRISSOK FRANK DR , HORN PETER DR , KRECH RUEDIGER , LEHR GERHARD , KING HORST DR
Abstract: A process for the production of thermoplastic polyurethane by reacting (a) isocyanates with (b) isocyanate-reactive compounds, optionally in presence of (c) chain extenders, (d) catalysts and (e) conventional additives etc., in which pulverised crosslinked polyurethane is added to the reaction mixture before, during and/or after reaction.
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公开(公告)号：DE19635713A1
公开(公告)日：1998-03-05
申请号：DE19635713
申请日：1996-09-03
Applicant: BASF AG
Inventor： PRISSOK FRANK DR , SCHOLZ GUENTER DR
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公开(公告)号：AT261468T
公开(公告)日：2004-03-15
申请号：AT97119148
申请日：1997-11-03
Applicant: BASF AG
Inventor： GENZ MANFRED DR , PRISSOK FRANK DR , HORN PETER DR , KRECH RUEDIGER , LEHR GERHARD , KING HORST DR
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