Preparation method for hyperbranched polycarboxylic acid polymer scale inhibitor
A technology of antiscalant and polycarboxylic acid, applied in chemical instruments and methods, descaling and water softening, special treatment targets, etc., can solve the problem of low maleic acid activity, unsuitability for industrial production, and high experimental control conditions and other problems, to achieve excellent scale inhibition performance, high scale inhibition effect, and improve the effect of scale inhibition performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0032] Example 1:
[0033] 1) In parts by mass, in a reactor equipped with a stirrer, a thermometer and a condenser, add 60 parts of allyl alcohol, 38 parts of maleic anhydride, 1 part of terephthaloquinone and 1 part of anhydrous cobalt chloride, After stirring uniformly, the temperature is raised to 50°C, and the temperature is kept for 12 hours. The conversion rate is determined to be more than 95%. The condensation is removed, and the small molecules are removed under vacuum to obtain the functional monomer.
[0034] 2) Add 30 parts of functional monomers, 20 parts of maleic anhydride, 48 parts of tetrahydrofuran, 2 parts of benzoyl peroxide in a closed reactor under the condition of passing a vacuum, heat up to 70℃, keep for 8h, The reactants are dried under vacuum conditions, and then a small amount of mixed solvent is used to wash away unreacted monomers. After the washed product is dried, it is hydrolyzed with saturated sodium bicarbonate to obtain a hyperbranched polycarbo...
Example Embodiment
[0035] Example 2:
[0036] 1) In parts by mass, add 55 parts of propenol, 43 parts of monoethyl maleate, 1 part of hydroquinone and 1 part of anhydrous silica gel in a reactor equipped with a stirrer, thermometer and condenser. After stirring, the temperature is raised to 70°C and the temperature is kept for 10 hours. The conversion rate is determined to be more than 90%. Remove the condensation, and remove the small molecules under vacuum to obtain the functional monomer.
[0037] 2) Under vacuum conditions, add 32 parts of functional monomer, 18 parts of maleic anhydride, 47 parts of tetrahydrofuran, 3 parts of benzoyl peroxide into a closed reactor, heat up to 70℃, keep for 8h, The reactants are dried under vacuum conditions, and then a small amount of mixed solvent is used to wash away unreacted monomers. After the washed product is dried, it is hydrolyzed with saturated sodium bicarbonate to obtain a hyperbranched polycarboxylic acid scale inhibitor.
Example Embodiment
[0038] Example 3:
[0039] 1) Add 65 parts of hydroxyethyl acrylate, 33 parts of maleic anhydride, 1 part of terephthaloquinone and 1 part of anhydrous chlorinated to a reactor equipped with a stirrer, a thermometer and a condenser according to parts by mass After stirring the cobalt, the temperature is raised to 60°C and kept for 12 hours. The conversion rate is determined to be more than 95%. The condensation is removed, and the small molecules are removed under vacuum to obtain the functional monomer.
[0040] 2) Under vacuum conditions, add 35 parts of functional monomer, 20 parts of monoethyl maleate, 43 parts of acetone, and 2 parts of di-tert-butyl hydroperoxide into a closed reactor, and heat to 70°C. ,Incubate for 10h, dry the reactants under vacuum conditions, then wash away unreacted monomers with a small amount of mixed solvent, dry the washed products, and hydrolyze with saturated sodium bicarbonate to obtain hyperbranched polycarboxylic acid scale inhibition Agent.
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.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap