公开(公告)号：US20180141254A1

公开(公告)日：2018-05-24

申请号：US15574501

申请日：2016-05-12

申请人： BASF SE

发明人： Bin-Erik CHEN ,  Akira NOMURA

IPC分类号： B29C47/00 ,  B29C47/92 ,  D01D5/24 ,  D01F6/70 ,  B01D69/04 ,  B01D69/08 ,  B01D71/54

摘要： The present invention is directed to a process for the preparation of a tube with an outer diameter in the range of from 10 μm to 250 μm consisting of a composition comprising a thermoplastic polyurethane as well as to a tube with an outer diameter in the range of from 10 μm to 250 μm consisting of a composition comprising a thermoplastic polyurethane obtained or obtainable by the process according to the invention. The invention is further directed to the use of a tube according to the invention as a tube for the transportation of a fluid or as gas membrane tube or as an elastic fiber.

公开(公告)号：US20180066122A1

公开(公告)日：2018-03-08

申请号：US15551314

申请日：2016-02-09

申请人： BASF SE

发明人： Hans RUDOLPH ,  Etsuhiro YAMAMOTO ,  Eiji NEGISHI ,  Akira NOMURA ,  Tatsuro TOMATA

IPC分类号： C08J9/18 ,  C08J9/12 ,  B29B7/88 ,  B29B9/06 ,  B29B9/12 ,  B29C44/34 ,  B29C47/00 ,  B29C47/30 ,  B29C47/36

摘要： A process for producing foamed thermoplastic polyurethane particles comprises the steps of a) melting a thermoplastic polyurethane in a first extruder (E1), b) injecting a gaseous blowing agent in a second extruder (E2), c) impregnating the gaseous blowing agent homogeneously into the thermoplastic polyurethane melt in a third extruder (E3), d) extruding the impregnated thermoplastic polyurethane melt through a die plate and granulating the melt in an underwater granulation device under temperature and pressure conditions to form foamed thermoplastic polyurethane particles.

公开(公告)号：US20160122465A1

公开(公告)日：2016-05-05

申请号：US14895858

申请日：2014-05-28

申请人： BASF SE

发明人： DeHui YIN ,  Bin-Eric CHEN ,  Akira NOMURA ,  Tienkuan LIM

IPC分类号： C08G18/76 ,  C08G18/32

CPC分类号： C08G18/7685 ,  C08G18/025 ,  C08G18/3206 ,  C08G18/3221 ,  C08G18/4238 ,  C08G18/664 ,  C08G18/765 ,  C08G18/7671 ,  C08K5/005 ,  C08L75/00 ,  C08L75/06 ,  C08L91/06

摘要： The present invention discloses a thermoplastic polyurethane comprising substantially no plasticizers and having a Shore A hardness of 60 or less, which is prepared by a one-step polymerization of i) linear polyol, ii) organic diisocyanate and iii) glycol chain extender mainly comprising ethylene glycol and/or 1,3-propanediol; wherein the linear polyol (i) has a number average molecular weight within the range of from 1.5×103 g/mol to 5.0×103 g/mol. The thermoplastic polyurethane of the present invention can be easily produced by conventional production methods, and the thermoplastic polyurethane thus produced can be molded to articles in practicable processing cycles. Moreover, the thermoplastic polyurethane articles have low shrinkage, have good low-temperature properties and good mechanical properties, and do not harden substantially at low temperature.

摘要翻译： 本发明公开了一种热塑性聚氨酯，其基本上不含增塑剂，其肖氏A硬度为60以下，其通过i）线性多元醇的一步聚合制备，ii）有机二异氰酸酯和iii）主要包含乙烯的乙二醇增链剂 乙二醇和/或1,3-丙二醇; 其中所述线性多元醇（i）的数均分子量在1.5×10 3 g / mol至5.0×10 3 g / mol的范围内。 本发明的热塑性聚氨酯可以通过常规的制造方法容易地制造，并且由此制造的热塑性聚氨酯可以在可行的加工循环中模塑成型。 此外，热塑性聚氨酯制品具有低收缩率，具有良好的低温性能和良好的机械性能，并且在低温下不会显着硬化。