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A kind of preparation method and application of bio-based deodorant

A deodorant, bio-based technology, used in building structures, building components, building insulation materials, etc., can solve problems such as hazards to operators and the natural environment, reduce toxic gas overflow, alleviate discomfort, and reduce use pollution. Effect

Active Publication Date: 2022-05-17
山东高速集团有限公司创新研究院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When asphalt is modified by adding a modifier containing sulfur, it will generate hydrogen sulfide, mercaptan and other odorous gases at high temperatures, which will also cause great harm to operators and the natural environment.

Method used

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  • A kind of preparation method and application of bio-based deodorant
  • A kind of preparation method and application of bio-based deodorant

Examples

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Effect test

preparation example Construction

[0030] A preparation method of a bio-based deodorant, comprising the following steps:

[0031] Step 1, adding toluene solvent, 1mol3,4-dihydroxybenzaldehyde, 2mol linoleic acid, 2.2mol diethyl azodicarboxylate and 2.2mol triphenylphosphine into a three-necked flask for stirring reaction; After vacuuming and nitrogen replacement, continue to stir and react at 120°C for 12h; cool the reactant to 0°C in an ice-water bath and add ice water to quench; the organic phase is separated and washed with water, dried, filtered, and then concentrated to light yellow Crude product; the crude product is separated and purified by column chromatography to obtain the white product 4-formyl-catechol dilinoleate;

[0032] Step 2, under the protection of nitrogen, dissolve 1.1 mol of n-propionaldehyde and 1 mol of 4-formyl-catechol dilinoleate prepared in step 1 in ethanol solution, stir evenly and cool to -10°C; Slowly add saturated sodium bicarbonate solution dropwise and react at -10°C for 12 ...

Embodiment 1

[0035] In the above step three, 40 parts of 3,4-dilinoleoyloxy-a-methylphenylacrylaldehyde obtained in step two, 56.7 parts of nano-silica, and 0.3 parts of antioxidant 1010 were added to the mixing tank , mixed for 1 hour under the test conditions of temperature 30°C and rotational speed 500 rpm, then added 3.0 parts of polyethylene wax and continued mixing for 30 minutes to obtain a bio-based deodorant.

Embodiment 2

[0037] In the above step three, 58 parts of 3,4-dilinoleoyloxy-a-methylphenylacrylaldehyde obtained in step two, 40 parts of nano-silica, and 0.5 parts of antioxidant BHT were added to the mixture In the tank, mix for 1 hour under the test conditions of temperature 30°C and rotation speed 500rpm, then add 1.5 parts of erucamide and continue mixing for 30 minutes to obtain a bio-based deodorant.

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Abstract

The invention relates to the technical field of highway asphalt, in particular to a bio-based deodorant, a preparation method and application thereof, comprising 40-60 parts of 3,4-dilinoleoyloxy-a-methylphenylacrolein, nano-white 40-60 parts of carbon black, 0.3-0.5 parts of antioxidant and 1-3 parts of polyethylene wax are prepared to obtain a bio-based deodorant. In the use process of the present invention, Schiff bases can be formed with amino groups in asphalt; stable thiol acetal can be formed with hydrogen sulfide, mercaptan, etc. generated in the process of adding stabilizers, so that toxic gases are no longer overflowed and use pollution is reduced. . The synthetic raw materials are all derived from natural substances, such as 3,4-dihydroxybenzaldehyde is extracted from the root of the Lamiaceae plant Salvia miltiorrhiza, and linoleic acid can be extracted from a variety of oil crops. The synthetic method is environmentally friendly and pollution-free; the synthetic product is degradable, and can be degraded by bacterial microorganisms after the pavement reaches its service life. The synthetic raw material has a special plant fragrance, which can relieve the discomfort caused by the peculiar smell generated during the asphalt mixing process to the operator.

Description

technical field [0001] The invention relates to the technical field of road asphalt, in particular to a bio-based deodorant and its preparation method and application. Background technique [0002] A small amount of aromatic amino and other components contained in asphalt are the main source of base asphalt odor. When asphalt is modified by adding a modifier containing sulfur, it will generate hydrogen sulfide, mercaptan and other odorous gases at high temperatures, which will also cause great harm to operators and the natural environment. Asphalt, especially coal tar pitch, will volatilize some polyaromatic compounds when preparing asphalt mixture or paving roads during hot mixing. Studies have shown that such compounds have the risk of carcinogenicity. Therefore, reducing or eliminating the volatilization and overflow of odorous substances in asphalt during high temperature treatment is very important for protecting the environment and creating a safe production environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/06C08K7/26C08K5/107
CPCC08L95/00C08K7/26C08K5/107C08K2201/011C08L23/06
Inventor 穆明浩王福海王峥韩立斌张哲郑君杨茂君陈秀秀刘占斌赵景原李朝旭李明杰郑捷元王进勇青光焱赖思静
Owner 山东高速集团有限公司创新研究院
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