公开(公告)号：US11267926B2

公开(公告)日：2022-03-08

申请号：US16346715

申请日：2017-11-14

Applicant: BASF SE

Inventor： Johannes Poppenberg ,  Waldemar Meier ,  Christina Tepper ,  Markus Susoff ,  Dejan Petrovic ,  Steffen Richter

IPC: C08G18/48 ,  C08G18/12 ,  C08G18/32 ,  C08G18/40 ,  C08G18/42 ,  C08G18/76 ,  C08J9/12 ,  C08G18/79

Abstract: The present invention relates to a method of preparing a polyurethane elastomer, said method comprising the step of reacting at least one isocyanate composition (ZI) and one polyol composition (ZP) comprising a poly-ε-caprolactone polyol and an α-hydro-ω-hydroxy-poly(oxytetramethylene) polyol to obtain an isocyanate-functional prepolymer and the step of reacting the prepolymer obtained as per step (i) with at least one chain extender (KV). The present invention further relates to a polyurethane elastomer obtained or obtainable according to a method of the invention and also to the method of using a polyurethane elastomer according to the invention or a polyurethane elastomer obtained or obtainable according to a method of the invention in the manufacture of a shaped article, especially a damping element, a shock absorber or a stop buffer or part of a shoe or of a shoe sole, for example part of an insert sole or of a midsole.

公开(公告)号：US20220267553A1

公开(公告)日：2022-08-25

申请号：US17596435

申请日：2020-06-12

Applicant: BASF SE ,  BASF Polyurethanes GmbH

Inventor： Elmar POESELT ,  Uwe Keppeler ,  Christina Tepper ,  Frank Prissok ,  Dirk Kempfert ,  Lisa Marie Schmidt ,  Wolfgang Guenter Micklitz

IPC: C08J9/35 ,  C08G18/10 ,  C08G18/48 ,  C08G18/76 ,  C08J9/14 ,  C08J9/228 ,  C08J9/00

Abstract: A process can be used for producing a thermoplastic polyurethane, where the process at least involves converting at least one isocyanate composition and a polyol composition, to obtain a prepolymer having isocyanate groups, and reacting the resulting prepolymer with at least one chain extender. The at least one isocyanate composition contains an isocyanate selected from naphthylene 1,5-diisocyanate (NDI), diphenylmethane 4,4′-diisocyanate (MDI), p-phenyl diisocyanate (PPDI), o-tolidine diisocyanate (TODI), ethylene diphenyl diisocyanate (EDI), or mixtures thereof. The polyol composition contains a polytetrahydrofuran or a derivative thereof. A thermoplastic polyurethane obtained or obtainable by such a process is useful, and a foamed pellet material can be produced containing such a thermoplastic polyurethane. The foamed pellet material of the invention can be used for production of a molded article.