POLYAMIDE 56 FIBRE WITH LOW BOILING WATER SHRINKAGE RATE, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
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United States of America Patent
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Issued Date -
Sep 8, 2022
app pub date -
Jan 15, 2020
filing date -
Aug 22, 2019
priority date (Note) -
Published
status (Latency Note)
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Abstract
The present invention relates to the technical field of polyamide materials, and provides a polyamide 56 pre-oriented yarn and a polyamide 56 draw textured yarn with a low shrinkage in boiling water, a process for producing the same and a use thereof. The raw materials for producing the polyamide 56 fiber comprise 1,5-pentane diamine and adipic acid, or a polyamide 56 resin obtained by polymerizing 1,5-pentane diamine monomer and adipic acid monomer; wherein the polyamide 56 fiber has a shrinkage in boiling water of 9% or less, wherein the polyamide 56 fiber comprises a polyamide 56 pre-oriented yarn with a low shrinkage in boiling water and a polyamide 56 draw textured yarn with a low shrinkage in boiling water. The polyamide 56 fiber has good mechanical properties, dyeing uniformity and dimensional stability. The process for producing the polyamide 56 fiber does not require modification to existing equipments for texturing polyamide fibers and thus reduces production costs.
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CN | B | CN112410916 | Aug 22, 2019 |
| KR | A | KR20220078573 | Jan 15, 2020 |
| WO | A1 | WO2021031529 | Jan 15, 2020 |
| EP | A1 | EP4019674 | Jan 15, 2020 |
| JP | A | JP2022545098 | Jan 15, 2020 |
International Classification(s)
- 2020 Application Filing Year
- D01D Class
- 291 Applications Filed
- 140 Patents Issued To-Date
- 48.11 % Issued To-Date
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