Method for preparing aldehyde-containing polyurethane-acrylate resin tanning agent
A technology of acrylic resin and methacrylic acid, applied in animal husbandry, chemical treatment of small raw hides/large raw hides/leather hides/furs, applications, etc. Chromium salt content, the effect of reducing pollution and reducing dosage
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0016] Dry the 250ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 20.0g of polyoxyethylene ether with a molecular weight of 1,000 and a vinyl end to a 250ml four-necked bottle with a stirrer and a thermometer, heat it to 80°C while stirring, add 0.01g of dibutyltin dilaurate, stir and mix for 10 Minutes, then 3.48 g of toluene diisocyanate (TDI) was added dropwise. After reacting for 3 hours, 20.0 g of polyoxypropylene ether with a molecular weight of 1,000 was added, and the reaction was continued for 4 hours. Then cool to 30° C. and discharge to obtain a polymerizable nonionic polyurethane oligomer.
[0017] Add 15.0g of acrylic acid and 30.0g of distilled water into a 250ml four-necked bottle with a stirring and condenser, stir and mix evenly, then slowly add a 20% sodium hydroxide solution dropwise to adjust the pH value to 4.0, during which the reaction liquid is controlled Th...
Embodiment 2
[0019] Dry the 250ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 8.0g of polyoxyethylene ether with a molecular weight of 400 and vinyl end to a 250ml four-necked bottle equipped with a stirrer and a thermometer, heat to 75°C under stirring, add 0.02g of dibutyltin dilaurate, stir and mix for 10 Minutes, then 3.48 g of toluene diisocyanate (TDI) was added dropwise. After reacting for 2 hours, 8.0 g of polyoxypropylene ether with a molecular weight of 400 was added, and the reaction was continued for 5 hours. Then it is cooled to 30°C and discharged to obtain a polymerizable nonionic polyurethane oligomer.
[0020] Add 30.0g of methacrylic acid and 40.0g of distilled water into a 250ml four-necked bottle with stirring and condenser, stir and mix evenly, then slowly dropwise add a sodium hydroxide solution with a concentration of 30%, adjust the pH value to 5.5, and control The temp...
Embodiment 3
[0022]Dry the 250ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 10.0g of polyoxyethylene ether with a molecular weight of 1,000 and a vinyl end to a 250ml four-neck bottle equipped with a stirrer and a thermometer, heat to 70°C while stirring, add 0.02g of dibutyltin dilaurate, stir and mix for 10 Minutes, then 1.74 g of toluene diisocyanate (TDI) was added dropwise. After reacting for 3 hours, 20.0 g of polyoxypropylene ether with a molecular weight of 2,000 was added, and the reaction was continued for 3 hours. Then it is cooled to 30°C and discharged to obtain a polymerizable nonionic polyurethane oligomer.
[0023] Add 10.0g of acrylic acid, 6.0g of methacrylic acid and 30.0g of distilled water into a 250ml four-necked bottle with stirring and condenser, stir and mix evenly, then slowly add potassium hydroxide solution with a concentration of 20% to adjust the pH value 6.0, du...
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