A cationic dyeable polyurethane elastic fiber and its preparation method
A polyurethane elastic and cationic technology, applied in fiber chemical characteristics, single-component synthetic polymer rayon, textiles and papermaking, etc., can solve the problems of less research on coloring properties, achieve bright color, reduce energy consumption, and improve quality effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] (1) Polytetrahydrofuran ether glycol PTMG (molecular weight 1810) 375.95Kg, small molecule sulfonate-based diol 0.451Kg (dimethyl isophthalate-5-sodium sulfonate and 1,4-butanediol The reactant, which is equivalent to 1200ppm small molecule sulfonate-based diol in 1Kg PTMG) and 87.95Kg of diphenylmethane-4,4'diisocyanate are placed in the reactor and reacted at 86±2°C for 120min. Obtaining isocyanate group-terminated prepolymers;
[0027] (2) Add 692.8Kg of DMAC to the prepolymer to fully dissolve the prepolymer in DMAC;
[0028] (3) Add 7.841Kg ethylenediamine, 0.509Kg propylenediamine, 1.522Kg diethylamine dissolved in 187.567Kg DMAC to the prepolymer solution to form an amine mixed solution to carry out chain extension reaction and chain termination reaction , to obtain polyurethane urea stock solution;
[0029] (4) adding matting agent, anti-yellowing agent, ultraviolet absorber, antioxidant and lubricating release agent to polyurethane urea stock solution to obta...
Embodiment 2
[0032] The preparation method is the same as in Example 1, except that every 1Kg of PTMG contains 3500ppm of small molecule sulfonate-based glycol.
Embodiment 3
[0034] The preparation method is the same as in Example 1, except that every 1Kg of PTMG contains 7500ppm of small molecule sulfonate-based glycols.
PUM
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