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Title:
POLYURETHANE-UREA ELASTIC FIBER AND PRODUCTION METHOD THEREOF
Document Type and Number:
Japanese Patent JP2022069009
Kind Code:
A
Abstract:
To provide a polyurethane-urea elastic fiber having high strength and ductility and excellent secular stability of yarn properties, obtained by modification of molecular chain terminals of a polyurethane-urea polymer, and a production method thereof.SOLUTION: A polyurethane-urea elastic fiber contains a polyurethane-urea polymer A having a molecular chain having a polymer diol, a di-isocyanate and an organic amine as starting materials, with both terminals of the molecular chain being a primary or a secondary amino group, and a polyurethane-urea polymer B having a molecular chain having a polymer diol, a di-isocyanate and an organic amine as starting materials, with at least one terminal of the molecular chain being a sulfonic acid amine salt.SELECTED DRAWING: None

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Inventors:
TAKAYAMA HIROSHI
HARA MASATSUGU
Application Number:
JP2020177918A
Publication Date:
May 11, 2022
Filing Date:
October 23, 2020
Export Citation:
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Assignee:
TORAY OPELONTEX CO LTD
International Classes:
D01F6/70
Attorney, Agent or Firm:
Force



 
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