Porous soft polyester fiber POY and preparation method thereof
A polyester fiber, soft technology, applied in the field of porous soft polyester fiber POY yarn and its preparation, can solve the problems of poor mechanical properties, uneven dyeing of polyester fibers, etc., to improve processing performance, improve dyeing performance, reduce melting The effect of bulk viscosity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0061] A preparation method of modified polyester, specifically comprising the following steps:
[0062] (1) Preparation of glycol terephthalate:
[0063] Add terephthalic acid and 2-pentyl-1,4-butanediol into a slurry with a molar ratio of 1:1.3 and add it to the reactor at a concentration of 50 wt%, and the addition amount is 0.3% of the weight of terephthalic acid Under the catalysis of concentrated sulfuric acid, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is normal pressure and the temperature is 180°C. 90% is the end point of the esterification reaction to obtain diol terephthalate;
[0064] (2) Preparation of ethylene terephthalate:
[0065] Put terephthalic acid and ethylene glycol into a slurry with a molar ratio of 1:1.2 and put them into the reactor to carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized p...
Embodiment 2
[0070] A preparation method of modified polyester, specifically comprising the following steps:
[0071] (1) Preparation of glycol terephthalate:
[0072] Put terephthalic acid and 2-hexyl-1,4-butanediol in a molar ratio of 1:1.38 into a slurry and add it to the reactor at a concentration of 55 wt%, and the addition amount is 0.32% of the weight of terephthalic acid Under the catalysis of concentrated sulfuric acid, esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.13 MPa and the temperature is 181 °C. % is the end point of the esterification reaction to obtain diol terephthalate;
[0073] (2) Preparation of ethylene terephthalate:
[0074] Put terephthalic acid and ethylene glycol into a slurry with a molar ratio of 1:1.3 and add them into the reactor to carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0....
Embodiment 3
[0079] A preparation method of modified polyester, specifically comprising the following steps:
[0080] (1) Preparation of glycol terephthalate:
[0081] Add terephthalic acid and 2-heptyl-1,4-butanediol into a slurry with a molar ratio of 1:1.33 and add it to the reactor at a concentration of 55 wt%, and the amount added is 0.33% of the weight of terephthalic acid Under the catalysis of concentrated sulfuric acid, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.12MPa and the temperature is 183°C. 92% is the end point of the esterification reaction to obtain diol terephthalate;
[0082] (2) Preparation of ethylene terephthalate:
[0083] Put terephthalic acid and ethylene glycol into a slurry with a molar ratio of 1:1.31 and put them into the reactor to carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure ...
PUM
Property | Measurement | Unit |
---|---|---|
elongation at break | aaaaa | aaaaa |
elongation at break | aaaaa | aaaaa |
elongation at break | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com