Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 22, 2022
Patent Application Number
16449889
Date Filed
June 24, 2019
Patent Citations
Patent Primary Examiner
Patent abstract
The problem to be solved by the present invention is to provide a polyester binder fiber having a low crystallization temperature and exhibiting improved adhesiveness and a fiber structure including the polyester binder fiber. The polyester binder fiber according to the present invention includes a polyester polymer and an amorphous polyether imide polymer in a proportion of 0.1 to 5.0 mass % (based on the mass of the polyester polymer), and the polyester binder fiber has a crystallization temperature measured by differential calorimetry in a range of 100° C. or higher and 250° C. or lower.
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