A process of producing a cellulose carbamate fiber filament
A technology of carbamate and cellulose, applied in the field of producing regenerated cellulose fiber filaments and producing cellulose carbamate fiber filaments, can solve the problem that the process of cellulose carbamate fibers cannot adapt to large-scale industrialization Production and other issues, to achieve the effect of good spinnability, high mechanical strength, and production cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0042] A process for producing cellulose urethane fiber filaments, comprising the following process steps:
[0043] A. Activation of cellulose
[0044] The cellulose is first soaked in sodium hydroxide solution to activate it, and then washed with water to obtain activated cellulose;
[0045] B, the preparation of cellulose carbamate
[0046] Adding urea and an inert solvent to the activated cellulose, and then heating it for esterification to obtain cellulose carbamate;
[0047] C, the preparation of cellulose carbamate solution
[0048] Add cellulose carbamate to the solution of sodium hydroxide and zinc oxide, freeze and react at -15°C for 3 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;
[0049] D. Spinning
[0050] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinning.
[0051] The performance of the cellulose urethane fiber fil...
Embodiment 2
[0056] A process for producing cellulose urethane fiber filaments, comprising the following process steps:
[0057] A. Activation of cellulose
[0058] The cellulose is first soaked in sodium hydroxide solution to activate it, and then washed with water to obtain activated cellulose;
[0059] B, the preparation of cellulose carbamate
[0060] Adding urea and an inert solvent to the activated cellulose, and then heating it for esterification to obtain cellulose carbamate;
[0061] C, the preparation of cellulose carbamate solution
[0062] Add cellulose carbamate to the solution of sodium hydroxide and zinc oxide, freeze and react at -5°C for 6 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;
[0063] D. Spinning
[0064] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinning.
Embodiment 3
[0066] A process for producing cellulose urethane fiber filaments, comprising the following process steps:
[0067] A. Activation of cellulose
[0068] The cellulose is first soaked in sodium hydroxide solution to activate it, and then washed with water to obtain activated cellulose;
[0069] B, the preparation of cellulose carbamate
[0070] Adding urea and an inert solvent to the activated cellulose, and then heating it for esterification to obtain cellulose carbamate;
[0071] C, the preparation of cellulose carbamate solution
[0072] Add cellulose carbamate to the solution of sodium hydroxide and zinc oxide, freeze and react at -10°C for 4.5 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;
[0073] D. Spinning
[0074] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinning.
PUM
Property | Measurement | Unit |
---|---|---|
degree of polymerization | aaaaa | aaaaa |
elongation at break | aaaaa | aaaaa |
degree of polymerization | 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