Octadecanoyl tributyl citrate plasticizer and preparation thereof
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0044] The preparation method of tributyl octadecanoyl citrate plasticizer, according to the above-mentioned formula batching, its step is:
[0045] (1) Synthesis of tributyl citrate: add citric acid, n-butanol, water-carrying agent and catalyst in the reaction kettle, heat up to reflux under stirring, react to anhydrous generation, distill and recover excess butanol to obtain citric acid tributyl ester;
[0046] (2) Synthesis of octadecanoyl chloride: Add stearic acid in the reaction kettle, add phosphorus trichloride dropwise when stirring and raising the temperature to 50°C, drop it in about 1 hour, heat up to 75°C for heat preservation reaction, and last for 3 hours , then cooled to room temperature, static layering to obtain octadecanoyl chloride;
[0047] (3) Synthesis of octadecanoyl tributyl citrate: Add tributyl citrate and catalyst in the reaction kettle, stir and heat up to 70°C, add octadecanoyl chloride dropwise, and the generated hydrogen chloride is passed thro...
Embodiment 1
[0049] (1) Synthesis of tributyl citrate: Add 22kg of citric acid, 38.5kg of n-butanol, 39kg of toluene and 0.5kg of catalyst into the reactor, start stirring, heat up to reflux, keep warm and reflux until anhydrous to form , open the vacuum system, distill under reduced pressure to remove excess n-butanol, toluene and water, cool down and discharge the material when there is no distilled component, and obtain tributyl citrate. The n-butanol obtained by distillation is recycled.
[0050] (2) Synthesis of octadecanoyl chloride: Accurately weigh 80.5kg of stearic acid and add it to the reaction kettle, stir and heat up to 50°C, add 19.5kg of phosphorus trichloride dropwise, drop it within 1 hour, and heat up to 75°C Insulate the reaction for 3 hours, then cool to room temperature, and statically separate to obtain octadecanoyl chloride.
[0051] (3) Synthesis of octadecanoyl tributyl citrate
[0052]Accurately weigh 43.5kg of tributyl citrate, add 1.5kg of catalyst into the re...
PUM
Property | Measurement | Unit |
---|---|---|
acid value | aaaaa | aaaaa |
color | 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