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Hydrophobic solid base catalyst and application thereof to preparation of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate

A hydrophobic solid, base catalyst technology, applied in aldehyde redox preparation, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc., can solve the problem of poor dispersion, large amount of catalyst and long reaction time and other problems, to achieve the effects of good dispersibility, water resistance and thermal stability, high conversion rate and selectivity

Active Publication Date: 2018-02-06
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the catalyzer used so far is all hydrophilic catalyzer, and the dispersibility of hydrophilic catalyzer in organic matter isobutyraldehyde is poor, causes required reaction time long, and required catalyst amount is many

Method used

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  • Hydrophobic solid base catalyst and application thereof to preparation of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate
  • Hydrophobic solid base catalyst and application thereof to preparation of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate
  • Hydrophobic solid base catalyst and application thereof to preparation of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate

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Experimental program
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Effect test

Embodiment 1

[0023] The preparation of embodiment 1 material A

[0024] Add 2 g of barium hydroxide evenly into a high-temperature and high-pressure tube furnace, and pass through 1.5 MPa high-pressure steam for 60 minutes. Disperse the treated solid in 10 g of ethanol, add 0.5 g of methyltrimethoxysilane under vigorous stirring, heat to 60° C., and stir for 24 h. Filter and dry to obtain the hydrophobic solid base catalyst A.

Embodiment 2

[0025] The preparation of embodiment 2 material B

[0026] Add 2g of magnesium hydroxide evenly into the high-temperature and high-pressure tube furnace, and pass through 2.0MPa high-pressure steam for 90min. Disperse the treated solid in 30 g of methanol, add 1 g of phenyltrimethoxysilane under vigorous stirring, heat to 80° C., and stir for 12 h. Filter and dry to obtain the hydrophobic solid base catalyst B.

Embodiment 3

[0027] The preparation of embodiment 3 material C

[0028] Add 5 g of barium hydroxide evenly into a high-temperature and high-pressure tube furnace, and pass through 0.5 MPa high-pressure steam for 120 minutes. Disperse the treated solid in 10 g of tert-butanol, add 2 g of propyltrimethoxysilane under vigorous stirring, heat to 60° C., and stir for 24 h. Filter and dry to obtain the hydrophobic solid base catalyst C.

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Abstract

The invention discloses a hydrophobic solid base catalyst and application thereof to the preparation of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate. The catalyst uses barium hydroxide or magnesiumhydroxide as a substrate; after the substrate is subjected to high-temperature steam treatment, the surface of the substrate is bonded with an organic group to enable the catalyst to present a hydrophobic property; the hydrophobic solid base catalyst can be used for efficiently preparing the 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate by condensation of isobutyraldehyde; the conversion ratioof the isobutyraldehyde and the selectivity of the 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate can both reach 90 percent or above. Compared with a conventional solid base catalyst, the catalyst islow in use level and good in water resistance and heat stability, is difficult to collapse and lose and the service life of the catalyst is long.

Description

technical field [0001] The invention relates to the field of chemical industry, specifically a hydrophobic solid base catalyst and its preparation in 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (commonly known as alcohol ester twelve) application in preparation. Background technique [0002] 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate, also known as alcohol ester dodeca, is a water-insoluble high-boiling diol ester, which is widely used in the field of fine chemicals , can be used as coating additives, lubricants, insecticides, solvents, herbicides, polyester resins and plastic additives. In recent years, with the increasingly stringent environmental protection regulations, this product has become a film-forming agent for performance coatings in water-based architectural coating environmental labeling products (ie green coatings) that use synthetic resin emulsion as the main film-forming substance. [0003] There are many synthetic methods for the preparation of 1,...

Claims

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Application Information

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IPC IPC(8): B01J31/26C07C67/44C07C69/28
CPCB01J31/26C07C67/44C07C69/28
Inventor 石松徐杰杜文强孙颖高进
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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