KR20220162294A - Eco-friendly biodegracable resin based dust reducing agent and manufacturing method thereof - Google Patents

Abstract

According to one aspect of the invention, a method for manufacturing an eco-friendly composition for reducing scattering dust is provided. The method comprises the steps of: adding an aliphatic glycol in an amount of 1.1 to 1.5 moles based on 1 mole of a mixture that comprises an aliphatic dicarboxylic acid or an anhydride thereof and a sulfonic acid salt in a molar ratio of 99.9 : 0.1 to 60 : 40 for esterification or transesterification; allowing condensation polymerization of the reaction product; and adding 5 to 50 parts by weight of a modified alkoxysilane compound based on 100 parts by weight of the total weight of the mixture and aliphatic glycol. According to the present invention, by using biodegradable aliphatic polyester into which sulfonic acid salt and an alkoxysilane compound are introduced into the molecular structure, it is possible to manufacture an eco-friendly composition for reducing scattering dust with excellent water resistance, hydrolysis properties, and no harmfulness, and manufacture an eco-friendly scattering dust-reducing agent from the composition.

Description

Eco-friendly biodegradable resin-based composition for reducing fugitive dust and its manufacturing method {ECO-FRIENDLY BIODEGRACABLE RESIN BASED DUST REDUCING AGENT AND MANUFACTURING METHOD THEREOF}

The present invention relates to an eco-friendly composition for reducing fugitive dust and a method for producing the same, and more particularly, to an eco-friendly composition for reducing fugitive dust having excellent water resistance and hydrolysis and no harmfulness, and a method for producing the same.

There are several types of biodegradable polymeric resin compositions known to date, but each molecular weight and other physical properties are different from each other, resulting in poor moldability, mechanical strength or heat resistance, and different degrees of biodegradability, so there are limitations in their use when applied to products. Because it exists, there is a problem that limits its use.

For example, conventional aliphatic polyesters known as biodegradable polymeric resin compositions are easily thermally decomposed due to low thermal stability when melted, so the range of molding conditions is narrow, the product shape is deformed, resulting in a high defect rate, and melt flow In addition to low workability due to a high index, there is a problem in that mechanical properties such as tensile strength and tear strength are poor, limiting their use. Therefore, it is time to properly control the reaction temperature and catalytic conditions and to discover new uses.

As one method for solving these problems, a method for preparing aliphatic polyester having reduced reaction time and improved moldability by adding a polyhydric alcohol or a monomer of a trivalent or higher polyhydric carboxylic acid during polyester production is known. However, since the low molecular weight polyester increases, there is a problem in that the tensile strength is lowered and there is a concern that gelation is difficult, and it is difficult to control the reactivity.

Meanwhile, Korean Patent Publication No. 10-1995-0025072 discloses a method for increasing the number average molecular weight of an aliphatic polyester. Referring to the above published patent, (1) aliphatic (including cyclic aliphatic) glycol and (2) aliphatic (including cyclic aliphatic) dicarboxylic acid (or its acid anhydride) as main components, and a small amount of (3) trivalent After obtaining a polyester having a number average molecular weight of about 15,000 to 20,000 by dehydration and deglycolization in the presence or absence of a polyhydric alcohol or a trihydric or higher polyhydric carboxylic acid (or an acid anhydride thereof) monomer, polyisocyanate as a coupling agent It is possible to obtain an aliphatic polyester resin having a number average molecular weight of about 20,000 to 70,000 by additionally reacting. However, according to the above method, there is a problem that the reaction time is increased and the productivity is lowered, and the polyisocyanate coupling agent used for molecular weight increase is extremely harmful to the human body.

Therefore, it is expected that if a method for producing a biodegradable aliphatic polyester resin having physical properties suitable for development use without having the above problems is provided, it can be usefully used in the related field.

One aspect of the present invention is to provide a method for manufacturing an eco-friendly composition for reducing scattering dust, which has excellent water resistance and hydrolysis properties and is not harmful.

Another aspect of the present invention is to provide an eco-friendly composition for reducing scattering dust, which is not only excellent in water resistance and hydrolysis, but also has no harmful properties.

According to one aspect of the present invention, to a mixture containing an aliphatic dicarboxylic acid or an anhydride thereof and a sulfonic acid salt in a molar ratio of 99.9: 0.1 to 60:40, an aliphatic glycol is added in a molar ratio of 1.1 to 1.5 to 1 mole of the mixture. esterification reaction or transesterification reaction; condensation polymerization of the reaction product; and adding 5 to 50 parts by weight of a modified alkoxysilane compound based on 100 parts by weight of the total weight of the mixture and aliphatic glycol.

According to another aspect of the present invention, an eco-friendly composition for reducing fugitive dust containing an aliphatic polyester, wherein the aliphatic polyester includes an aliphatic dicarboxylic acid or an anhydride thereof and an aliphatic glycol as a main component of a unit, and a sulfonic acid salt And a modified alkoxysilane compound is introduced into the molecular structure, a number average molecular weight of 1,000 to 10,000, a weight average molecular weight of 5,000 to 30,000, and a melting point of 80 to 130 ° C., an environmentally friendly composition for reducing fugitive dust is provided.

According to the present invention, by using biodegradable aliphatic polyester into which sulfonate and alkoxysilane compounds are introduced into the molecular structure, it is possible to prepare an eco-friendly composition for reducing fugitive dust with excellent water resistance and hydrolysis and no harmfulness, from the composition An eco-friendly scattering dust reducing agent can be manufactured.

1 is a schematic diagram of an experimental device and configuration for quantifying the performance evaluation of an eco-friendly scattering dust reducing agent prepared from the composition for reducing scattering dust of the present invention.
Figure 2 is a schematic diagram showing the molecular structure of polyester contained in the composition as an example of the manufacturing method of the composition for reducing fugitive dust of the present invention.
Figure 3 is a schematic diagram briefly showing an example of a method for manufacturing an environmentally friendly scattering dust reduction composition of the present invention.
Figure 4 shows the process in which the composition for reducing fugitive dust of the present invention is naturally decomposed by microorganisms in the air in the air with an oxygen ratio of 20 to 22% and a humidity of 50 to 60%.
5 (a) shows a sample in which water is sprayed on 55 g of PM10 dust as a control, and FIG. It shows the sprayed sample.
Figure 6 shows the results of measuring the scattering dust loss rate at wind speeds of 5 m / s and 10 m / s according to Experimental Examples 1 and 2.
7 shows the results of measuring the dust concentration over time at a wind speed of 5 m/s according to Experimental Example 1.
8 shows the results of measuring the dust concentration over time at a wind speed of 10 m/s according to Experimental Example 2.

Hereinafter, preferred embodiments of the present invention will be described. However, the embodiments of the present invention may be modified in various forms, and the scope of the present invention is not limited to the embodiments described below.

According to the present invention, there is provided a method for producing an environmentally friendly composition for reducing scattering dust. That is, according to the present invention, an eco-friendly composition for reducing scattering dust having excellent water resistance and hydrolysis property and no harmfulness can be prepared using biodegradable aliphatic polyester into which sulfonate and alkoxysilane compounds are introduced into the molecular structure, From this, it is possible to manufacture an eco-friendly scattering dust reducing agent.

More specifically, the present invention relates to a mixture containing an aliphatic dicarboxylic acid or an anhydride thereof and a sulfonic acid salt in a molar ratio of 99.9:0.1 to 60:40 by adding an aliphatic glycol in a molar ratio of 1.0 to 1.5 to 1 mole of the mixture. A reaction step of esterification reaction or transesterification reaction; condensation polymerization of the reaction product of the reaction step; And mixing 5 to 50 parts by weight of a modified alkoxysilane compound based on 100 parts by weight of the mixture and the aliphatic glycol with the polycondensate obtained from the condensation polymerization step. Of a composition for reducing dust scattering A manufacturing method is provided.

For example, the production method of the present invention is a mixture containing an aliphatic dicarboxylic acid or an anhydride thereof and a sulfonic acid salt in a molar ratio of 99.9:0.1 to 70:30, and an aliphatic glycol in a molar ratio of 1.1 to 1.3 with respect to 1 mole of the mixture. A reaction step of adding an esterification reaction or a transesterification reaction; condensation polymerization of the reaction product of the reaction step; and mixing 5 to 20 parts by weight of a modified alkoxysilane compound with the polycondensate obtained from the polycondensation step based on 100 parts by weight of the mixture and the aliphatic glycol.

The aliphatic dicarboxylic acid or its anhydride of the present invention preferably has 2 to 14 carbon atoms, and examples thereof include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, sebacic acid, and azelaic acid. , It may be at least one selected from the group consisting of nonane dicarboxylic acid, dimethyl succinate, dimethyl adipate, 1,4-cyclohexanedicarboxylic acid, and anhydrides thereof.

The sulfonic acid salt may be, for example, a monomer of dimethyl-5-sulfoisophthalate sodium salt or a polymer thereof.

The aliphatic dicarboxylic acid or its anhydride and its sulfonic acid salt may be mixed in a molar ratio of 99.9:0.1 to 60:40, preferably 99.9:0.1 to 70:30. When the molar ratio of the sulfonic acid salt is less than 0.1, the sulfonic acid salt cannot be introduced into the resulting polymer, resulting in insufficient effect, and when the molar ratio exceeds 40, there is an uneconomical problem.

The aliphatic glycol of the present invention may have 2 to 20 carbon atoms, and for example, ethylene glycol, 1,2-propanediol, 1,3-propanediol, neopentyl glycol, propylene glycol, 1,2-butanediol, It may be at least one selected from the group consisting of 1,4-butanediol, 1,6-hexanediol, and 1,2-cyclohexanedimethanol.

The aliphatic glycol may be added in an amount of 1.0 to 1.5 moles, preferably 1.1 to 1.3 moles, based on 1 mole of the mixture of the aliphatic dicarboxylic acid or its anhydride and its sulfonic acid salt. When the molar ratio is less than 1.0, the reaction is slow and discoloration occurs, and when the molar ratio is greater than 1.5, there is an uneconomical problem.

In the present invention, an aliphatic dicarboxylic acid and an aliphatic glycol constitute the main components of an aliphatic polyester, and the aliphatic polyester is a chain polymer formed by dehydration and condensation of an aliphatic dicarboxylic acid and an aliphatic glycol to form an ester bond. It may be, and a sulfonic acid salt may be introduced thereto.

Specifically, the present invention may prepare the aliphatic polyester by adding an aliphatic glycol to a mixture of an aliphatic dicarboxylic acid or an anhydride thereof and a sulfonic acid salt, followed by esterification or transesterification, followed by polycondensation of the reaction product.

The esterification reaction may be a reaction in which the aliphatic dicarboxylic acid and the aliphatic glycol are subjected to dehydration condensation to produce an ester, and the transesterification reaction is a reaction in which an acid group or an alkyl group is exchanged by reacting an ester with an alcohol, an acid, or another ester. can be

In the present invention, the reaction step may be performed by adding 0.001 to 1 part by weight of a reaction catalyst, 0.001 to 2 parts by weight of a stabilizer, or a mixture thereof based on 100 parts by weight of the total weight of the mixture and the aliphatic glycol, preferably. Preferably, it may be performed by adding 0.005 to 1 part by weight of a reaction catalyst, 0.005 to 2 parts by weight of a stabilizer, or a mixture thereof.

When the addition amount of the reaction catalyst is less than 0.001 parts by weight, there is a problem that the reaction rate is lowered, and when it is more than 1 part by weight, the reaction rate is increased but there is a problem that discoloration occurs.

When the added amount of the stabilizer is less than 0.001 parts by weight, there is a problem that factors that inhibit the hydrolysis of the reaction product cannot be removed, and when it is greater than 2 parts by weight, the reaction rate is lowered.

The reaction catalyst may be at least one selected from the group consisting of dibutiltin oxide, tetrabutyl titanate, and antimony acetate, and the stabilizer may be triphenyl phosphate, trimethyl phosphate, or a mixture thereof.

According to the present invention, the reaction step may be performed at a reaction temperature of 150 to 300 °C, preferably 190 to 250 °C, and a reaction time of 60 to 180 minutes, preferably 100 to 150 minutes. When the temperature is less than 150 ° C., the dehydration reaction is not effectively performed, so there is a problem of deterioration in quality, and when the temperature exceeds 300 ° C., there is a problem of thermal decomposition of reactants and products. In addition, when the reaction time is less than 60 minutes, there is a problem in that a lot of unreacted substances are generated, and when the reaction time is more than 180 minutes, a polymer chain is not formed well and a lot of carbides are generated.

After the reaction step, a step of condensation polymerization of the reaction product of the reaction step may be performed subsequently. A polymer compound may be produced by repeating condensation through the condensation polymerization step.

The polycondensation may be performed by adding 0.01 to 3 parts by weight of a polycondensation catalyst, 0.001 to 1 part by weight of a stabilizer, or a mixture thereof based on 100 parts by weight of the mixture and the aliphatic glycol, preferably. It may be performed by adding 0.05 to 2 parts by weight of a polycondensation catalyst, 0.005 to 0.5 parts by weight of a stabilizer, or a mixture thereof.

When the amount of the condensation polymerization catalyst is less than 0.01 parts by weight, the activity as a catalyst disappears after a certain period of time, which affects the molecular weight control of the product and makes it difficult to increase the degree of polymerization. There is a problem that discoloration occurs.

If the stabilizer is less than 0.001 parts by weight, there is a problem in that it does not play a role as a stabilizer, such as not removing factors that inhibit the hydrolysis of the reaction product, and if it exceeds 1 part by weight, there is a problem in that the reaction rate is lowered.

The condensation polymerization may be performed at a reaction temperature of 200 to 300 °C, preferably 230 to 270 °C, and a reaction time of 60 to 240 minutes, preferably 100 to 200 minutes. When the temperature is less than 200 ° C., there is a problem that the reaction time is excessively increased, and when the temperature is higher than 300 ° C., there is a problem that the reaction product may be thermally decomposed. In addition, the reaction time may vary depending on the amount of catalyst and stabilizer added, and if it is less than 60 minutes, there is a problem that the reaction does not sufficiently proceed, and if it exceeds 240 minutes, there is an uneconomical problem.

In addition, since the condensation polymerization step is a step of synthesizing a polymer, that is, a step of controlling the increase in molecular weight, it may be performed under a vacuum of 0.01 to 3.0 Torr, preferably 1.0 to 2.0 Torr. If it is less than 0.01 Torr, there is a problem that excessive cost is consumed to set a low pressure, and if it is more than 3.0 Torr, there is a problem that the molecular weight cannot be sufficiently increased.

Finally, after the condensation polymerization step, 5 to 50 parts by weight, preferably 5 to 20 parts by weight of a modified alkoxysilane compound based on 100 parts by weight of the total weight of the mixture and the aliphatic glycol. An axis obtained from the step of condensation polymerization A step of mixing with the polymer may be performed.

The mixing may be performed at a reaction temperature of 70 to 90° C., preferably 75 to 85° C., for a reaction time of 3 to 5 hours, preferably for 3 to 4 hours. When the temperature is less than 70 ° C., there is a problem in that physical properties deteriorate, and when the temperature exceeds 90 ° C., there is a problem in that the physical properties are deformed. In addition, when the reaction time is less than 3 hours, there is a problem that the reaction does not sufficiently proceed, and when it exceeds 5 hours, the double bond of the composition is destroyed, and there is a problem that product defects may occur.

On the other hand, the modified alkoxysilane compound may be prepared by adding liquid colloidal silica, a catalyst and distilled water to an alkoxysilane resin, specifically, 30 to 70 liquid colloidal silica based on 100 parts by weight of the alkoxysilane resin to the alkoxysilane resin It may be prepared by adding 0.01 to 1 part by weight of a catalyst and 10 to 50 parts by weight of distilled water and mixing at 70 to 80 ° C. for 3 to 4 hours.

Therefore, the step of mixing the modified alkoxysilane compound may be replaced by adding a compound prepared by mixing the alkoxysilane resin, liquid colloidal silica, catalyst, and distilled water, and maintaining the reaction temperature and reaction time of the mixing step. .

The alkoxysilane resin may be at least one selected from the group consisting of epoxysilane, vinylsilane, acrylsilane, and aminosilane, and the liquid colloidal silica is silica particles stably dispersed in a liquid such as water or an organic solvent. It may be prepared by directly oxidizing high-purity silicon, and the catalyst may be at least one of hydrochloric acid, sulfuric acid, and acetic acid.

The modified alkoxysilane compound is an inorganic resin, and by adding it, water resistance can be imparted to the composition, and the curing rate of the composition can be easily controlled.

Furthermore, the manufacturing method of the present invention may further include a step of adding a component that can be hydrolyzed to low molecular weight and finally decomposed into carbon dioxide and water, and the component is, for example, starch, shellac (shellac), polylactic acid (PLA), polyvinyl alcohol (PVA), polyglycolic acid (PGA), and polyester urethane (PEU).

The aliphatic polyester contained in the composition for reducing fugitive dust of the present invention prepared by the above manufacturing method may have a number average molecular weight of 1,000 to 10,000, a weight average molecular weight of 5,000 to 30,000, and a melting point of 80 to 130 ° C.

Furthermore, the composition is a biodegradable resin that can be hydrolyzed and also degraded by microorganisms such as bacteria, fungi and algae. Therefore, after being primarily hydrolyzed during landfilling, secondary decomposition by soil microorganisms is possible, and at this time, the decomposition rate can be controlled using water and carbon dioxide.

In addition, the composition for reducing fugitive dust of the present invention has an eco-friendly advantage and no biohazard because it does not contain a surfactant at all.

Meanwhile, an eco-friendly scattering dust reducing agent may be prepared using the composition for reducing scattering dust, and the reducing agent may preferably be a coating agent. Specifically, scattering dust can be coated by spraying the coating agent on fine dust (PM10 dust) having a diameter smaller than 10 μm, and scattering or re-dispersion of dust can be reduced.

Hereinafter, the present invention will be described in more detail through specific examples. The following examples are merely examples to aid understanding of the present invention, and the scope of the present invention is not limited thereto.

Example

Manufacturing of eco-friendly composition for reducing scattering dust

Example 1

The air in a 500 ml round bottom flask was substituted with nitrogen, and 94.4 g of succinic acid, 59.4 g of dimethyl-5-sulfoisophthalate sodium salt, and 117.2 g of 1.4-butanediol were added, and an esterification reaction was performed at 230° C. for 2 hours. At this time, a mixture of 0.01 g of antimony acetate, 0.5 g of dibutyl tin oxide and 1 g of tetrabutyl titanate was added as a catalyst, and 2 g of trimethyl phosphate was added as a stabilizer. After 34g of water flowed out, the pressure was reduced to 2.0 Torr or less at 250°C, and polycondensation was performed for 150 minutes. Then, 30 g of a modified alkoxysilane compound prepared by mixing 30 parts by weight of epoxysilane and liquid colloidal silica (YGS-30, YGS-30), 0.05 part by weight of hydrochloric acid and 70 parts by weight of distilled water based on 100 parts by weight of epoxysilane and epoxysilane was added and reacted at 80 ° C. for 4 hours to prepare an eco-friendly composition for reducing scattering dust.

Example 2

The air in a 500 ml round bottom flask was replaced with nitrogen, 82.6 g of succinic acid, 14.6 g of adipic acid, 89.1 g of dimethyl-5-sulfoisophthalate sodium salt, and 117.2 g of 1,4-butanediol were added and maintained at 230° C. for 2 hours. During the esterification reaction was carried out. At this time, a mixture of 0.01 g of antimony acetate, 0.5 g of dibutyl tin oxide, 0.5 g of tetrabutyl titanate, and 1 g of tetramethyl titanate was added as a catalyst, and 2 g of trimethyl phosphate was added as a stabilizer. After 34g of water flowed out, the pressure was reduced to 2.0 Torr or less at 250°C, and polycondensation was performed for 150 minutes. Then, 30 g of a modified alkoxysilane compound prepared by mixing 30 parts by weight of epoxysilane and liquid colloidal silica (YGS-30, YGS-30), 0.05 part by weight of hydrochloric acid and 70 parts by weight of distilled water based on 100 parts by weight of epoxysilane and epoxysilane was added and reacted at 80 ° C. for 4 hours to prepare an eco-friendly composition for reducing scattering dust.

Example 3

The air in a 500ml round-bottom flask was replaced with nitrogen, 94.4g of succinic acid, 59.4g of dimethyl-5-sulfoisophthalate sodium salt, and 117.2g of 1,4-butanediol were added, followed by an esterification reaction at 230°C for 2 hours. did At this time, a mixture of 0.01 g of antimony acetate, 0.5 g of dibutyl tin oxide, 0.5 g of tetrabutyl titanate, and 1 g of tetramethyl titanate was added as a catalyst, and 2 g of trimethyl phosphate was added as a stabilizer. After 34g of water flowed out, the pressure was reduced to 2.0 Torr or less at 250°C, and polycondensation was performed for 120 minutes. Then, 30 g of a modified alkoxysilane compound prepared by mixing 30 parts by weight of epoxysilane and liquid colloidal silica (YGS-30, YGS-30), 0.05 part by weight of hydrochloric acid and 70 parts by weight of distilled water based on 100 parts by weight of epoxysilane and epoxysilane was added and reacted at 80 ° C. for 4 hours to prepare an eco-friendly composition for reducing scattering dust.

Performance evaluation of eco-friendly fugitive dust reduction composition

Experimental Example 1

PM10 fine dust was placed on a precision scale as a sample, and after spraying 100 g of the eco-friendly scattering dust reducer prepared from the composition of Example 1 of the present invention, a wind speed generator industrial electric fan (LK Makita General Co., Ltd., MT 410) was used to blow the wind at a wind speed of 5 m/s toward the sample for 30 seconds. As a control, the same experiment was performed by spraying 100 g of water instead of the eco-friendly scattering dust reducer. The weight (g) of fine dust was measured before and after the experiment, and the dust concentration (μm/m3) over time was measured with a fine dust meter (Lavisen LVAI-502, Certification No. KTR-2019-21), and the results 6 and 7 are shown.

As shown in FIGS. 6 and 7, in the case of the experimental group spraying the eco-friendly scattering dust reducing agent of the present invention, the loss rate was 0.3019%, and there was no change in dust concentration, but in the case of the control group, the loss rate was 62.6182%, about 30 seconds After the passage of time, the dust concentration increased to about 1000 μm/m ³ .

Experimental Example 2

The experiment was performed in the same manner as in Experimental Example 1 except that the wind at a wind speed of 10 m/s was blown, and the results are shown in FIGS. 6 and 8.

As shown in FIGS. 6 and 8, in the case of the experimental group spraying the eco-friendly scattering dust reducing agent of the present invention, the loss rate was 0% and there was no change in dust concentration, but in the case of the control group, the loss rate was 100%, and about 15 seconds After the passage of time, the dust concentration increased to about 1000 μm/m ³ . The fact that the dust concentration decreases again after about 26 seconds in FIG. 8 can be considered to be because the dust continues to diffuse and escapes the measurement area of the measuring device.

Environmental field test and inspection of eco-friendly fugitive dust reduction composition

water pollution test

On February 23, 2021, a water pollution test of the composition for reducing fugitive dust of the present invention was performed according to the test method of the National Institute of Environmental Sciences Notice No. 2020-18 by requesting the Korea Testing & Research Institute. As a result, it was confirmed that chromium, copper, cadmium, etc. were not detected and there was no water pollution (March 16, 2021, report number TAK-2021-030336).

Daphnia magna acute toxicity test

On February 23, 2021, a Daphnia magna acute toxicity test of the eco-friendly scattering dust reduction composition of the present invention was performed according to the water pollution process test standard by requesting the Korea Testing & Research Institute. As a result, it was confirmed that there was no toxicity to daphnia and no biohazard (April 8, 2021, report number TAK-2021-030337).

soil contamination test

On February 23, 2021, a soil contamination test of the composition for reducing fugitive dust of the present invention was performed according to the test method of the National Institute of Environmental Sciences Notice No. 2018-53 requested by the Korea Testing & Research Institute. As a result, it was confirmed that cadmium, copper, lead, etc. were not detected and there was no soil contamination (March 9, 2021, report number TAK-2021-030338).

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible without departing from the technical spirit of the present invention described in the claims. It will be obvious to those skilled in the art.

Claims (18)

An esterification reaction or a transesterification reaction by adding an aliphatic glycol in a molar ratio of 1.0 to 1.5 per mole of the mixture to a mixture containing an aliphatic dicarboxylic acid or an anhydride thereof and a sulfonic acid salt in a molar ratio of 99.9:0.1 to 60:40 a reaction step;
condensation polymerization of the reaction product of the reaction step; and
Mixing 5 to 50 parts by weight of a modified alkoxysilane compound with the condensation polymer obtained from the condensation polymerization step based on 100 parts by weight of the mixture and the aliphatic glycol total
Containing, a method for producing an environmentally friendly composition for reducing scattering dust.
According to claim 1,
The aliphatic dicarboxylic acid or its anhydride is oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, sebacic acid, azelaic acid, nonanedicarboxylic acid, dimethylsuccinate, dimethyladipate, 1, 4-Cyclohexanedicarboxylic acid and at least one selected from the group consisting of its anhydride, a method for producing an eco-friendly composition for reducing fugitive dust.
According to claim 1,
The sulfonic acid salt is a monomer of dimethyl-5-sulfoisophthalate sodium salt or a polymer thereof, a method for producing an eco-friendly composition for reducing fugitive dust.
According to claim 1,
The aliphatic glycols include ethylene glycol, 1,2-propanediol, 1,3-propanediol, neopentyl glycol, propylene glycol, 1,2-butanediol, 1,4-butanediol, 1,6-hexanediol and 1,2 - At least one or a mixture of two or more selected from the group consisting of cyclohexanedimethanol, a method for producing an environmentally friendly composition for reducing fugitive dust.
According to claim 1,
The reaction step is carried out by adding 0.001 to 1 part by weight of a reaction catalyst, 0.001 to 2 parts by weight of a stabilizer or a mixture thereof based on 100 parts by weight of the total weight of the mixture and aliphatic glycol. Manufacturing method of.
According to claim 5,
The reaction catalyst is a method for producing an eco-friendly scattering dust reduction composition of dibutiltin oxide, tetrabutyl titanate, antimony acetate or a mixture thereof.
According to claim 5,
The stabilizer is triphenyl phosphate, trimethyl phosphate, or a mixture thereof, a method for producing an environmentally friendly composition for reducing scattering dust.
According to claim 1,
The reaction step is to be carried out at 150 to 300 ℃ for 60 to 180 minutes, a method for producing an environmentally friendly scattering dust reduction composition.
According to claim 1,
The polycondensation step is carried out by adding 0.01 to 3 parts by weight of a polycondensation catalyst and 0.001 to 1 part by weight of a stabilizer based on 100 parts by weight of the mixture and the aliphatic glycol, of an eco-friendly composition for reducing scattering dust manufacturing method.
According to claim 9,
The polycondensation catalyst is at least one selected from the group consisting of magnesium acetate, tetrapropyl titanate, zinc acetate, tetrabutyl titanate, dibutyl tin oxide, tetrapropyl titanate, calcium acetate and tetraisopropyl titanate, and is environmentally friendly. Method for producing a composition for reducing scattering dust.
According to claim 9,
The stabilizer is at least one selected from the group consisting of trimethyl phosphate, trimethylphosphine, triphenyl phosphate and phosphate.
According to claim 1,
The condensation polymerization step is performed at 200 to 300 ° C. for 60 to 240 minutes, a method for producing an environmentally friendly composition for reducing scattering dust.
According to claim 1,
The step of adding the modified alkoxysilane compound is carried out by adding 5 to 50 parts by weight of the modified alkoxysilane compound based on 100 parts by weight of the mixture and the aliphatic glycol. Method for producing a composition for reducing dust scattering .
According to claim 1,
The step of adding the modified alkoxysilane compound is carried out at 70 to 90 ° C. for 3 to 5 hours, a method for producing an environmentally friendly scattering dust reduction composition.
According to claim 1,
The modified alkoxysilane compound is at least one alkoxysilane resin selected from the group consisting of epoxysilane, vinylsilane, acrylsilane and aminosilane, based on 100 parts by weight of the alkoxysilane resin, 30 to 70 parts by weight of liquid colloidal silica, 0.01 part by weight of catalyst to 1 part by weight and 10 to 50 parts by weight of distilled water, which is prepared by mixing at 70 to 80 ° C. for 3 to 4 hours.
According to claim 1,
Eco-friendly scattering, further comprising adding at least one selected from the group consisting of starch, shellac, polylactic acid (PLA), poly vinyl alcohol (PVA), polyglycolic acid (PGA), and polyester urethane (PEU) A method for preparing a composition for reducing dust.
An eco-friendly composition for reducing scattering dust containing aliphatic polyester,
The aliphatic polyester includes an aliphatic dicarboxylic acid or an anhydride thereof and an aliphatic glycol as main components of a unit, and a sulfonate and a modified alkoxysilane compound are introduced into the molecular structure, and has a number average molecular weight of 1,000 to 10,000, and a weight average A molecular weight of 5,000 to 30,000 and a melting point of 80 to 130 ° C.
Eco-friendly composition for reducing scattering dust.
According to claim 17,
The eco-friendly scattering dust reduction composition is a coating composition, eco-friendly scattering dust reduction composition.

Images