EP 2780496 A2 20140924 - PROCESS FOR PREPARING BICOMPONENT FIBERS COMPRISING POLY(TRIMETHYLENE TEREPHTHALATE)
Title (en)
PROCESS FOR PREPARING BICOMPONENT FIBERS COMPRISING POLY(TRIMETHYLENE TEREPHTHALATE)
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ZWEIKOMPONENTENFASERN MIT POLY(TRIMETHYLENTEREPHTHALAT)
Title (fr)
PROCÉDÉ DE PRÉPARATION DE FIBRES À DEUX COMPOSANTS COMPRENANT UN POLY(TÉRÉPHTALATE DE TRIMÉTHYLÈNE)
Publication
Application
Priority
- US 201161561281 P 20111118
- US 2012064662 W 20121112
Abstract (en)
[origin: WO2013074453A2] Disclosed is a process for preparing crimpable bicomponent fibers from two poly(trimethylene terephthalate) starting materials that differ from one another in intrinsic viscosity. One starting material is characterized by an intrinsic viscosity <= 0.7 dL/g. The relatively low intrinsic viscosity allows the employment of a low melt temperature, with concomitant reduction in the evolution of acrolein, and without significant degradation in the properties or processibility of the bicomponent fiber.
IPC 8 full level
B29C 48/05 (2019.01); B29C 48/91 (2019.01); D01D 1/09 (2006.01); D01D 5/22 (2006.01); D01F 8/14 (2006.01)
CPC (source: EP US)
B29C 48/05 (2019.01 - EP US); B29C 48/91 (2019.01 - EP US); D01D 1/09 (2013.01 - EP US); D01D 5/22 (2013.01 - EP US); D01F 8/14 (2013.01 - EP US)
Citation (search report)
See references of WO 2013074453A2
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2013074453 A2 20130523; WO 2013074453 A3 20130919; BR 112014011864 A2 20170509; CA 2854899 A1 20130523; CN 103930602 A 20140716; EP 2780496 A2 20140924; JP 2015501887 A 20150119; KR 20140093992 A 20140729; TW 201326485 A 20130701; US 2014306363 A1 20141016
DOCDB simple family (application)
US 2012064662 W 20121112; BR 112014011864 A 20121112; CA 2854899 A 20121112; CN 201280055503 A 20121112; EP 12791385 A 20121112; JP 2014542365 A 20121112; KR 20147016177 A 20121112; TW 101142156 A 20121113; US 201214358184 A 20121112