(19)
(11) EP 3 927 870 A1

(12)

(43) Date of publication:
29.12.2021 Bulletin 2021/52

(21) Application number: 20706138.3

(22) Date of filing: 11.02.2020
(51) International Patent Classification (IPC): 
D01D 5/08(2006.01)
D01F 6/70(2006.01)
 D01D 10/02(2006.01)
(52) Cooperative Patent Classification (CPC):
D01D 5/08; D01D 10/02; D01F 6/70
(86) International application number:
PCT/EP2020/053469
(87) International publication number:
WO 2020/169417 (27.08.2020 Gazette 2020/35)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 19.02.2019 WO PCT/CN2019/075473

(71) Applicants:
  • BASF SE
    67056 Ludwigshafen am Rhein (DE)
  • Haining Xin Gao Fibres Ltd.
    Haining, Zhejiang, 314416 (CN)

(72) Inventors:
  • YIN, De Hui
    Shanghai, 200137 (CN)
  • ZHUANG, Wei
    Shanghai, 200137 (CN)
  • YAN, Hui Zhi
    Shanghai, 200137 (CN)
  • CHEN, Wei Lin
    Guangzhou, 510095 (CN)
  • GAN, Gendi
    Haining, 314416 (CN)
  • ZHU, Lizhong
    Haining, 314416 (CN)
  • ZOU, Shengjie
    Haining, 314416 (CN)

(74) Representative: BASF IP Association 
BASF SE GBI-C006
67056 Ludwigshafen
67056 Ludwigshafen (DE)

   


(54) A PROCESS FOR PRODUCING A THERMOPLASTIC POLYURETHANE FIBER WITH LOW SHRINKAGE, AND THE USE OF THE FIBER