A kind of preparation method and application of organosilicon-modified self-dulling waterborne polyurethane for synthetic leather
A water-based polyurethane and silicon modification technology, applied in the field of synthetic leather, can solve the problems of reduced physical and mechanical properties of surface treatment coatings, safety issues of solvent products, and reduced product performance, so as to improve grades, performance and application performance , good bonding effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0031] A method for preparing organic silicon-modified self-dulling water-based polyurethane for synthetic leather. In parts by weight, 200 parts of amino silicone oil after vacuum dehydration, 50 parts of mixed polymer diol, 40 parts of mixed diisocyanate, triethylamine Add 2 parts into the reaction kettle, stir and react at 75°C for 180 minutes, then add 7 parts of dimethylolpropionic acid (DMPA), 2 parts of 1,4-butanediol (BDO) and 3 parts of triethylamine, Stir the reaction at 75°C for 80 minutes, then cool down to 32°C, add 10 parts of mixed diamine and 400 parts of water, stir and emulsify for 30 minutes, finally cool down to 25°C, add hexamethylene diisocyanate (HDI) trimer 8 parts, stirred and reacted for 180 minutes, and the silicone-modified self-dulling water-based polyurethane for synthetic leather was obtained.
[0032] Wherein, the relative molecular weight of the amino silicone oil is 5000-15000. Amino silicone oil is amino silicone oil with a single relative m...
Embodiment 2
[0037] A method for preparing organic silicon-modified self-dulling water-based polyurethane for synthetic leather. In parts by weight, 300 parts of amino silicone oil after vacuum dehydration, 40 parts of mixed polymer diol, 45 parts of mixed diisocyanate, triethylamine Add 2.5 parts into the reaction kettle, stir and react at 80°C for 150 minutes, then add 7.3 parts of dimethylolpropionic acid (DMPA), 2.2 parts of 1,4-butanediol (BDO) and 2.4 parts of triethylamine, Stir the reaction at 80°C for 70 minutes, then cool down to 34°C, add 8 parts of mixed diamine and 300 parts of water, stir and emulsify for 35 minutes, finally cool down to 28°C, add hexamethylene diisocyanate (HDI) trimer 9 parts, stirred and reacted for 200 minutes to obtain silicone-modified self-dulling water-based polyurethane for synthetic leather.
[0038] Wherein, the relative molecular weight of the amino silicone oil is 5000-15000. Amino silicone oil is a mixture of amino silicone oils with various re...
Embodiment 3
[0043] A method for preparing organic silicon-modified self-dulling water-based polyurethane for synthetic leather. In parts by weight, 240 parts of amino silicone oil after vacuum dehydration, 55 parts of mixed polymer diol, 50 parts of mixed diisocyanate, and triethylamine Add 2.2 parts into the reaction kettle, stir and react at 85°C for 150 minutes, then add 7.6 parts of dimethylolpropionic acid (DMPA), 2.1 parts of 1,4-butanediol (BDO) and 2 parts of triethylamine, Stir the reaction at 82°C for 70 minutes, then cool down to 30°C, add 7 parts of mixed diamine and 320 parts of water, stir and emulsify for 40 minutes, finally cool down to 27°C, add hexamethylene diisocyanate (HDI) trimer 10 parts, stirred and reacted for 210 minutes to obtain silicone-modified self-dulling water-based polyurethane for synthetic leather.
[0044] Wherein, the relative molecular weight of the amino silicone oil is 5000-15000. Amino silicone oil is amino silicone oil with a single relative mol...
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