PRODUCTION OF HEAT-RESISTANT URETHANE YARN

PURPOSE:To obtain a urethane yarn excellent in heat resistance by adding a specific prepolymer compound polymerized from a bifunctional polyol and diisocyanate components to a molten polyurethane and spinning the resultant mixture. CONSTITUTION:A prepolymer compound polymerized from a bifunctional p...

Full description

Saved in:
Bibliographic Details
Main Authors MURAMOTO YASUO, MORISHIGE YOSHIAKI, YOSHIMOTO SEI, OGAWA YASUHIRO
Format Patent
LanguageEnglish
Published 20.06.1990
Subjects
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To obtain a urethane yarn excellent in heat resistance by adding a specific prepolymer compound polymerized from a bifunctional polyol and diisocyanate components to a molten polyurethane and spinning the resultant mixture. CONSTITUTION:A prepolymer compound polymerized from a bifunctional polyol component (e.g. polytetramethylene glycol, having 800-2000 molecular weight) and a diisocyanate component (preferably diphenylmethane diisocyanate) at a molar ratio of NCO groups in the diisocyanate component to OH groups in the polyol component within the range of 2-4 is added and mixed with a molten polyurethane. The resultant mixture is then melt spun to afford the objective urethane yarn.
Bibliography:Application Number: JP19880317238