公开(公告)号：US12168712B2

公开(公告)日：2024-12-17

申请号：US17309421

申请日：2019-11-29

Applicant: BASF SE

Inventor： Frank Schaefer ,  Michael Freese ,  Elmar Poeselt ,  Etsuhiro Yamamoto ,  Yasuyuki Suzuki ,  Dai Watanabe ,  Patrick Drawe

IPC: C08G18/10 ,  C08G18/32 ,  C08G18/48

Abstract: A thermoplastic polyurethane having a glass transition temperature of the soft phase of not more than −25° C. measured using DMA and a heating rate of 2K/min at 1 Hz under torsion based on DIN EN ISO 6721: 2016; maximum G″ can be obtained by a process at least including the reaction of a polyol composition including a polypropylene glycol, wherein the proportion of the secondary terminal OH groups based on the total number of terminal OH groups of the polypropylene glycol is in the range of more than 90%, with a polyisocyanate to obtain a polyol composition including a prepolymer and the reaction of the polyol composition including the prepolymer with a polyisocyanate composition including at least one polyisocyanate and at least one chain extender having a molecular weight

公开(公告)号：US11052570B2

公开(公告)日：2021-07-06

申请号：US15551314

申请日：2016-02-09

Applicant: BASF SE

Inventor： Hans Rudolph ,  Etsuhiro Yamamoto ,  Eiji Negishi ,  Akira Nomura ,  Tatsuro Tomata

IPC: B29B7/88 ,  B29C48/05 ,  B29C48/00 ,  B29C48/345 ,  B29C48/385 ,  B29B9/06 ,  B29C44/34 ,  C08J9/12 ,  B29B9/12 ,  C08J9/34 ,  C08J9/16 ,  C08J9/236 ,  C08J9/18 ,  B29K75/00 ,  B29K101/12 ,  B29C48/04 ,  B29K105/04

Abstract: 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：US20220025097A1

公开(公告)日：2022-01-27

申请号：US17309421

申请日：2019-11-29

Applicant: BASF SE

Inventor： Frank Schaefer ,  Michael Freese ,  Elmar Poeselt ,  Etsuhiro Yamamoto ,  Yasuyuki Suzuki ,  Dai Watanabe ,  Patrick Drawe

IPC: C08G18/10 ,  C08G18/32 ,  C08G18/48

Abstract: A thermoplastic polyurethane having a glass transition temperature of the soft phase of not more than −25° C. measured using DMA and a heating rate of 2K/min at 1 Hz under torsion based on DIN EN ISO 6721: 2016; maximum G″ can be obtained by a process at least including the reaction of a polyol composition including a polypropylene glycol, wherein the proportion of the secondary terminal OH groups based on the total number of terminal OH groups of the polypropylene glycol is in the range of more than 90%, with a polyisocyanate to obtain a polyol composition including a prepolymer and the reaction of the polyol composition including the prepolymer with a polyisocyanate composition including at least one polyisocyanate and at least one chain extender having a molecular weight

公开(公告)号：US09605131B2

公开(公告)日：2017-03-28

申请号：US13857524

申请日：2013-04-05

Applicant: BASF SE

Inventor： Wei Zhuang ,  Bin Chen ,  Akira Nomura ,  Etsuhiro Yamamoto ,  Jianqiang Qu ,  Michi Kondo ,  Tienkuan Lim ,  Frank Schaefer

IPC: C08K5/00 ,  C08K5/12 ,  C08L75/04 ,  C08G18/48 ,  C08G18/66 ,  C08G18/76 ,  C08G18/08

CPC classification number: C08K5/12 ,  C08G18/0895 ,  C08G18/4854 ,  C08G18/6674 ,  C08G18/7671 ,  C08L75/04 ,  C08L75/08

Abstract: This invention is directed to a thermoplastic polyurethanes composition comprising polyether-based thermoplastic polyurethane and 1,2-cyclohexane dicarboxylic acid ester and preparation processes thereof. The thermoplastic polyurethane composition has a good mold release behavior in injection molding without undesirably significant shrinkage and surface blooming of final product.

公开(公告)号：US20130267639A1

公开(公告)日：2013-10-10

申请号：US13857524

申请日：2013-04-05

Applicant: BASF SE

Inventor： Wei ZHUANG ,  Bin Chen ,  Akira Nomura ,  Etsuhiro Yamamoto ,  Jianqiang Qu ,  Michi Kondo ,  Tienkuan Lim ,  Frank Schaefer

IPC: C08K5/12

CPC classification number: C08K5/12 ,  C08G18/0895 ,  C08G18/4854 ,  C08G18/6674 ,  C08G18/7671 ,  C08L75/04 ,  C08L75/08

Abstract: This invention is directed to a thermoplastic polyurethanes composition comprising polyether-based thermoplastic polyurethane and 1,2-cyclohexane dicarboxylic acid ester and preparation processes thereof. The thermoplastic polyurethane composition has a good mold release behavior in injection molding without undesirably significant shrinkage and surface blooming of final product.

Abstract translation: 本发明涉及一种包含聚醚基热塑性聚氨酯和1,2-环己烷二羧酸酯的热塑性聚氨酯组合物及其制备方法。 热塑性聚氨酯组合物在注射成型中具有良好的脱模性能，而没有不期望的显着收缩和最终产品的表面起霜。