JP2009144030A - Asphalt mixture adhesion preventive agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an asphalt mixture adhesion preventive agent which has sufficient wetting properties to the surface to be supplied, can more surely impart a high degree of adhesion preventiveness of the asphalt mixture to the surface to be supplied, can sufficiently prevent the deterioration of the rubber of a tire roller, and furthermore can sufficiently improve problems of environmental pollution such as air pollution and working atmosphere. <P>SOLUTION: The asphalt mixture adhesion preventive agent comprises a terpene based compound and a straight-chain α-olefin compound as active ingredients. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an asphalt composite material adhesion preventing agent, and more specifically, prevents asphalt composite materials used for road pavement and the like from adhering to a wheel portion of a transport vehicle or a rolling device, asphalt production plant equipment, or the like. The present invention relates to an asphalt mixture adhesion inhibitor.

  When paving roads and plazas, etc., use asphalt mixture after leveling the ground with sand or gravel. Such an asphalt compound is produced by mixing aggregate and the like with an asphalt component at a compound plant. And such an asphalt compound material is normally heated to the temperature of about 110-150 degreeC, and is loaded on conveyance vehicles, such as a dump truck, with the temperature maintained, and is conveyed to a construction site. In addition, at the construction site, such asphalt mixture is a road roller in which the rolling wheel is an iron wheel after being laid down on the ground leveled by heating to the above temperature, a tire roller in which the rolling wheel is a tire, etc. It is compacted by rolling equipment and paved.

  By the way, since the asphalt component is originally used for the purpose of bonding the aggregate, the asphalt mixture is likely to adhere to the contact surface. Therefore, the loading platform portion of the dump truck that transports the asphalt mixture is made of a metal such as a smooth steel plate so that the mixture becomes slippery when the asphalt mixture is lowered. However, when transporting the asphalt mixture, the mixture is cooled to 110 ° C. or lower and solidified at the contact surface with the loading platform, so that the asphalt mixture adheres to and accumulates on the loading platform, and the transportation work efficiency decreases. There was a problem. Further, when paving roads and the like, the asphalt mixture is heated as described above, and thus has a high viscosity, and adheres to and accumulates on the rolling wheel portion (iron wheel and tire) due to compression by the rolling device. When the asphalt mixture is deposited on the rolling wheel portion of the rolling equipment in this manner, there arises a problem that the pavement surface cannot be finished uniformly.

  Therefore, conventionally, in order to prevent such asphalt mixture from adhering, water, light oil, kerosene on the contact surface of the platform surface (steel surface) and rolling equipment (road rollers, tire rollers, etc.) of transport vehicles Asphalt mixture adhesion inhibitors such as petroleum solvents such as heavy oil and mineral oil are applied or sprayed, and various asphalt mixture adhesion inhibitors have been studied. For example, in JP-A-7-90286 (Patent Document 1), asphalt adhesion prevention comprising a mineral oil having a kinematic viscosity at 40 ° C. of 3.0 to 22 cst, a pour point of 0 ° C. or less and an aniline point of 75 ° C. or more. Agents are disclosed. However, the asphalt adhesion inhibitor made of mineral oil as described in Patent Document 1 and the asphalt mixture adhesion inhibitor such as the petroleum solvent has a problem that the coating surface is likely to be discolored or deteriorated, and further used. Occasionally, since a large amount of organic solvent is used for dilution, there are concerns about environmental pollution problems such as air pollution and health effects on workers. Even when the mineral oil is used after being emulsified in water, the compatibility between the mineral oil and the emulsifier is not sufficient, which causes problems such as dilution stability of the dispersion, decay, and clogging of the spraying apparatus.

  Japanese Patent Application Laid-Open No. 7-292346 (Patent Document 2) discloses an asphalt adhesion preventing agent containing a nonionic surfactant of sorbitan fatty acid esters or polyoxyethylene sorbitan fatty acid esters. No. 8-127761 (Patent Document 3) discloses an adhesion preventing agent containing glycols such as ethylene glycol glycols and propylene glycol glycols. However, in the anti-adhesive agent containing the conventional surfactant as described in Patent Documents 2 and 3, the anti-adhesive property to the asphalt mixture is not yet sufficient, and furthermore, a tire that comes into contact when it is used There was a problem that rubber could be deteriorated with respect to a roller or the like.

As a technique for solving such a conventional problem, Japanese Patent Application Laid-Open No. 2006-182859 (Patent Document 4) discloses an asphalt mixture adhesion preventing agent containing a terpene compound as an active ingredient. However, in the asphalt mixture adhesion preventing agent as described in Patent Document 4, the wettability to the surface to which the asphalt mixture adhesion preventing agent is supplied is not always sufficient.
JP-A-7-90286 JP 7-292346 A Japanese Patent Laid-Open No. 8-127761 JP 2006-182859 A

  The present invention has been made in view of the above-described problems of the prior art, and has sufficiently high wettability with respect to the surface to be supplied, and more reliably imparts high adhesion prevention properties to asphalt composites to the supply surface. Asphalt mixture adhesion preventive agent that can sufficiently prevent the deterioration of rubber such as tire rollers, and can sufficiently improve environmental pollution problems such as air pollution and work environment problems The purpose is to do.

  As a result of intensive studies to achieve the above object, the present inventors were surprised by using a combination of a terpene compound and a linear α-olefin compound as an active ingredient of an asphalt mixture adhesion inhibitor. What should be done is that the wettability to the supply surface is sufficiently excellent, and it is possible to more reliably provide the supply surface with a high level of anti-adhesion properties for asphalt composites, and sufficiently deteriorate the rubber such as tire rollers. It has been found that an asphalt mixture adhesion preventive agent can be obtained that can be prevented, and can sufficiently improve the problem of environmental pollution such as air pollution and the problem of the working environment, and has led to the completion of the present invention. .

  That is, the asphalt mixture adhesion preventive agent of the present invention is characterized by containing a terpene compound and a linear α-olefin compound as active ingredients.

  In the asphalt mixture adhesion preventive agent of the present invention, the linear α-olefin compound preferably has 6 to 24 carbon atoms.

  In the asphalt mixture adhesion inhibitor of the present invention, the terpene compound preferably has a boiling point of 150 ° C. or higher.

  Furthermore, it is preferable that the asphalt mixture adhesion preventing agent of the present invention further contains a nonionic surfactant and / or an anionic surfactant as an active ingredient.

  Moreover, it is preferable that the asphalt mixture adhesion inhibitor of the present invention further contains a solvent for diluting or emulsifying the active ingredient.

  In addition, although the reason which can achieve the said objective by the asphalt compound material adhesion preventing agent of this invention is not necessarily certain, the present inventors guess as follows. That is, the asphalt mixture adhesion preventive agent of the present invention contains the terpene compound and the linear α-olefin compound. Both the terpene compound and the linear α-olefin compound have physical properties that appropriately dissolve the asphalt component. Therefore, on the surface to which the asphalt mixture adhesion preventing agent of the present invention is supplied, the asphalt component in the asphalt mixture in contact with the supply surface is appropriately dissolved, and the asphalt mixture has a proper viscosity. The asphalt mixture in such a state is given sufficient lubricity and peelability (here, peelability refers to the peelability between the asphalt mixture and the part of the equipment in contact therewith). Thus, the asphalt mixture adhesion inhibitor of the present invention can form a film capable of imparting sufficient lubricity and releasability to the asphalt mixture on the surface to which it is supplied. It is a thing. Moreover, since the asphalt compound adhesion inhibitor of the present invention contains the terpene compound and the linear α-olefin compound, the cyclic double bond of the terpene compound and the α-olefin are included. The flexibility and lubricity are improved by the aliphatic double bond of the compound, and the viscosity is lowered, so that the wettability is excellent. As described above, the asphalt mixture adhesion preventive agent of the present invention has sufficiently high wettability to the supply surface, so that the coating can be more reliably applied to the supply surface even if the supply surface is uneven. It is possible to form. Therefore, in the asphalt mixture adhesion preventive agent of the present invention, due to the synergistic effect of the terpene compound and the linear α-olefin compound, a sufficiently high adhesion prevention property to the asphalt mixture is surely ensured on the supply surface. The present inventors speculate that it can be imparted to the above.

  According to the present invention, the wettability to the surface to be supplied is sufficiently high, and the contact surface of the asphalt mixture can be more reliably imparted with a high degree of adhesion prevention to the asphalt mixture, and the deterioration of rubber such as a tire roller. In addition, it is possible to provide an asphalt mixture adhesion preventing agent that can sufficiently prevent environmental pollution problems such as air pollution and work environment problems.

  Hereinafter, the present invention will be described in detail with reference to preferred embodiments thereof.

  The asphalt mixture adhesion preventive agent of the present invention contains a terpene compound and a linear α-olefin compound as active ingredients.

The terpene compound contained as one of the active ingredients of such an asphalt mixture adhesion inhibitor is a hydrocarbon having a composition of (C ₅ H ₈ ) _n , an oxygenated compound derived therefrom, and an unsaturation degree. It is a compound. Examples of such terpene compounds include monoterpene compounds, sesquiterpene compounds, diterpene compounds, and triterpene compounds.

  Examples of such monoterpene compounds include terpene hydrocarbons such as d-limonene, hydrogenated limonene, β-pinene, myrcene, terpinene, camphene, tricyclene, and terpinolene; linanol, myrsenol, menthol, geraniol, terpineol, borneol, Examples include terpene alcohols such as hydrogenated terpineol.

  Examples of the sesquiterpene compound include terpene hydrocarbons such as bisabolene, gingive beren, curcumen, kazinene, sesquibenien, and santalen; .

  In addition, examples of the diterpene compound include terpene hydrocarbons such as camphorene, podocarprene, millene, phyllocladene, and totalene;

  Furthermore, examples of the triterpene compound include α-amylin, ubaol, phyllanthol, β-amylin, germanicol, oleanolic acid, betulin, lupeol and the like.

  Among such terpene compounds, it is preferable to use the monoterpene compound from the viewpoint of market availability and safety. Moreover, such terpene compounds may be used alone or in combination of two or more.

  Moreover, as such a terpene compound, a terpene compound having a boiling point of 150 ° C. or higher is more preferable. The asphalt mixture is heated to a temperature range of about 110 to 150 ° C. at the time of preparation, and transported and paved while keeping the temperature in the temperature range. By using it, volatilization and evaporation are suppressed, and the excellent anti-adhesion property tends to be maintained sufficiently.

  Furthermore, it is most preferable to use d-limonene among such terpene compounds. d-Limonene is mainly separated from the branches and leaves, rhizomes, bark, fruits, straws, resins, and the like of plants by steam distillation, extraction or the like. In particular, d-limonene extracted from natural citrus is advantageous in terms of biodegradability, safety and economy.

  Moreover, in the asphalt mixture adhesion preventive agent of the present invention, a linear α-olefin compound is contained as one of the active ingredients. As described above, in the present invention, by using a linear α-olefin compound together with the terpene compound, the wetting of the asphalt mixture adhesion inhibitor on the supply surface is more than when the terpene compound is used alone. It is possible to sufficiently improve the property and more reliably impart a high level of adhesion prevention to asphalt composites on the supply surface. In addition, such a linear α-olefin compound has high biodegradability and is therefore a suitable component from the viewpoint of preventing environmental pollution. Examples of such linear α-olefin compounds include linear α-monoolefins and linear α-olefin oligomers. Among such linear α-olefin compounds, the linear α-monoolefin is used from the viewpoint that the adhesion prevention property of the asphalt mixture is higher and the deterioration of the rubber can be more sufficiently suppressed. Is preferred.

  As the carbon number of such a linear α-olefin compound, the carbon number is 6 to 24 (more from the viewpoint of improving the asphalt composite adhesion prevention property and the performance of preventing the deterioration of rubber in a more balanced manner. The α-olefin compound of 12-18) is preferable. When such a linear α-olefin compound having a smaller number of carbon atoms is used, the asphalt mixture adhesion preventing property is further improved, and when a compound having a larger number of carbon atoms is used, the performance of preventing deterioration of rubber is improved. It tends to improve. And, when the carbon number of such an α-olefin compound is less than the lower limit, the performance of preventing the deterioration of rubber tends to be lowered. On the other hand, when the upper limit is exceeded, the asphalt mixture adhesion preventing property tends to be lowered. is there.

  Examples of such linear α-olefin compounds include 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tridecene, 1-tetradecene, 1-hexadecene, 1-octadecene, and the like. Among them, 1-dodecene, 1-tridecene and 1-tetradecene are more preferable from the viewpoint that the asphalt mixture adhesion preventing property and the rubber deterioration preventing performance can be exhibited in a more balanced manner. In addition, such a linear alpha olefin compound may be used individually by 1 type, or may be used in combination of 2 or more type.

  Moreover, as such a linear alpha olefin compound, it is more preferable that the boiling point is 150 degreeC or more. The asphalt mixture is heated to a temperature range of about 110 to 150 ° C. at the time of preparation, and is transported and paved while keeping the temperature in the temperature range. By using an α-olefin compound, volatilization and evaporation are suppressed and excellent anti-adhesion properties tend to be maintained more sufficiently.

  Furthermore, the content ratio of the terpene compound and the linear α-olefin compound is not particularly limited, and can be appropriately adjusted according to the type of the terpene compound and the linear α-olefin compound used. However, the mass ratio (terpene compound: linear α-olefin compound) is preferably 1: 2 to 5: 1 (more preferably 1: 2 to 2: 1). If the content ratio of such an α-olefin compound is less than the lower limit, it tends to be difficult to impart sufficiently high wettability. On the other hand, if the content exceeds the upper limit, the adhesion prevention property of the asphalt mixture decreases. There is a tendency.

  Moreover, it is preferable that the asphalt mixture adhesion preventing agent of the present invention further contains a nonionic surfactant and / or an anionic surfactant as an active ingredient. By containing such a surfactant, when the asphalt mixture adhesive is diluted or emulsified with a solvent, the surface tension of the terpene compound and the linear α-olefin compound in the solvent is increased. It becomes possible to improve the diffusibility by lowering, and to further improve the stability of the dissolved state or the emulsified state. Further, when the asphalt mixture adhesion inhibitor is used after being diluted or emulsified with a solvent, the surfactant is contained, and thereby the asphalt mixture adhesion prevention property is obtained by the synergistic effect of the permeability and lubricity of the surfactant. Can be further improved. Among such nonionic surfactants and anionic surfactants, anionic surfactants are more preferable from the viewpoint that the emulsifiability of the terpene compound and the linear α-olefin compound is higher. .

The nonionic surfactant is not particularly limited, and a known nonionic surfactant can be appropriately used. For example, the following general formula (1):
R ¹ O (AO) nR ² (1)
(In the formula (1), R ¹ represents a hydrogen atom or a hydrocarbon group having 1 to 24 carbon atoms, R ² represents a hydrogen atom or an acyl group having 2 to 24 carbon atoms, and n represents 1 to 200. When R ¹ and R ² are both hydrogen atoms, n represents an integer of 5 to ²⁰⁰ , A represents an alkylene group having 2 to 4 carbon atoms, and n is 2 or more. A may be the same or different, and the addition form of the alkyleneoxy group represented by AO may be one single addition or two or more random additions or block additions. )
The compound represented by these is more preferable.

When the number of carbon atoms of the hydrocarbon group represented by R ¹ in the general formula (1) exceeds 24, the affinity of the nonionic surfactant with a solvent such as water decreases, and the terpene compound and the straight chain It tends to be difficult to dilute or emulsify the α-olefin compound. The hydrocarbon group of the number of atoms represented by R ¹ in the general formula (1) is 1 to 24, aliphatic hydrocarbon groups, alicyclic hydrocarbon groups, any aromatic hydrocarbon group It may be a hydrocarbon group.

Among the nonionic surfactants represented by the general formula (1), it is preferable to use a nonionic surfactant in which R ² is an acyl group. Moreover, when the numerical value of n in General formula (1) becomes a numerical value outside the said range, it exists in the tendency for the dilution or emulsifiability of a terpene type compound and a linear alpha olefin compound to fall.

  Examples of the anionic surfactant include carboxylate types such as fatty acid salts; sulfate types such as alkylbenzene sulfonates, alkylnaphthalene sulfonates, α-olefin sulfonates, and sulfosuccinic acid diesters; higher alcohols. Sulfate ester salts, sulfate esters of higher alcohol alkylene oxide adducts, sulfate ester types such as sulfated oils and sulfated olefins; phosphorus such as higher alcohol phosphate ester salts and phosphate ester salts of higher alcohol alkylene oxide adducts Examples include acid ester salt type anionic surfactants. Among such anionic surfactants, fatty acid salt type anionic surfactants are particularly preferred.

  As such a fatty acid salt type anionic surfactant, more specifically, the terpene compound and the linear α-olefin compound have good emulsifiability, Examples include unsaturated higher fatty acid salts. Examples of such salts include alkali metal salts, alkaline earth metal salts, alkanolamine salts, and the like, and alkanolamine salts are particularly preferable from the viewpoint of emulsification.

  Moreover, as content of such a nonionic surfactant and / or anionic surfactant, it is 5 mass parts or more with respect to 100 mass parts of total amounts of the said terpene type compound and a linear alpha olefin compound. It is preferable that it is 10 mass parts-250 mass parts. When the content of such nonionic surfactant and / or anionic surfactant is less than the lower limit, the asphalt mixture adhesion inhibitor is diluted with water, or components remaining on the pavement surface or equipment are washed. In this case, the emulsifiability in water tends to decrease. On the other hand, when it exceeds the upper limit, the asphalt mixture adhesion preventing performance tends to be lowered.

  Moreover, it is preferable that the asphalt mixture adhesion inhibitor of the present invention further contains a solvent for diluting or emulsifying the active ingredient. Examples of such a solvent include water and a glycol solvent (for example, butyl carbitol) in which a terpene compound can be dissolved.

  Further, in the asphalt mixture adhesion preventive agent of the present invention, the total amount of the terpene compound, the linear α-olefin compound, the nonionic surfactant and / or the anionic surfactant is asphalt compound. The amount is preferably 0.01 to 100% by mass, more preferably about 20 to 60% by mass with respect to the total amount of the material adhesion preventing agent. When the total amount is less than the lower limit, the active ingredient is too dilute and it is necessary to increase the amount of coating when coating, and the working efficiency of coating and the like tends to decrease.

  In addition to the above components, the asphalt mixture adhesion preventive agent of the present invention includes inorganic compounds, polyethylene resins, and polypropylene resins that have been conventionally used as lubricating components for the purpose of further improving the adhesion prevention properties of the asphalt mixture. Etc. can be added. In addition, although the reason why adhesion prevention property improves more by adding such a lubrication component is not necessarily certain, the present inventors guess as follows. That is, when the asphalt mixture adhesion inhibitor of the present invention and the asphalt mixture come into contact with each other, the asphalt component is appropriately dissolved by the terpene compound and the linear α-olefin compound. When the dissolved asphalt component and the lubricating component are mixed, the releasability of the asphalt mixture is further improved, and a synergistic effect between fluid lubrication and interlayer lubrication by the lubricating component occurs, and the asphalt mixture adheres. It is presumed that the preventability is further improved.

  In addition, the asphalt mixture adhesion preventive agent of the present invention, if necessary, components used in metal processing chemicals, such as extreme pressure additives, detergents, dispersants, antiwear agents, antifoaming agents, Components such as a corrosion inhibitor, a viscosity index improver, a pour point depressant, and a rust inhibitor can be appropriately blended.

  Furthermore, the manufacturing method in particular of the asphalt mixture adhesion inhibitor of this invention is not restrict | limited, The method manufactured by mixing uniformly the said active ingredient and the various components contained as needed is employable.

  The kind of equipment to which the asphalt composite material adhesion preventing agent of the present invention can be applied is not particularly limited as long as it is equipment that handles asphalt composite material. Examples of such equipment include skipping of asphalt manufacturing plants, loading surfaces of dump trucks as transport vehicles, road wheel iron parts of compaction equipment, tire roller tire parts of compaction equipment, asphalt composites For example, equipment such as a finisher that evenly spreads the road on the road surface. In addition, the asphalt mixture adhesion preventive agent of the present invention can be used by applying, spraying, etc. the asphalt mixture adhesion preventive agent of the present invention to a material such as the rolling equipment in a state diluted with a stock solution or water. It may be supplied by.

  In this way, the asphalt mixture adhesion inhibitor of the present invention is applied to, for example, a load carrier surface of a transport vehicle (for example, a dump truck), so that the asphalt mixture adheres to the load carrier surface of the transport vehicle (for example, a dump truck). It is possible to prevent this and improve the workability of transportation. In addition, when applied to the rolling wheel part (steel wheel or tire), it is possible to prevent the asphalt mixture from adhering to and deposit on the rolling wheel part (steel wheel or tire) and to paving the asphalt uniformly. It becomes possible. Furthermore, by using the asphalt composite material adhesion preventive agent of the present invention, deterioration of the tire is reduced as compared with conventionally used petroleum-based solvents and the like.

  EXAMPLES Hereinafter, although this invention is demonstrated more concretely based on an Example and a comparative example, this invention is not limited to a following example.

  First, a method for evaluating the characteristics of the asphalt mixture adhesion inhibitor obtained in each Example and each Comparative Example described later will be described. In addition, as such a characteristic, the adhesion prevention property of asphalt compound, the influence on rubber | gum, and the wettability with respect to a steel plate were evaluated.

(1) Evaluation method of adhesion prevention property of asphalt composite material First, a steel plate of 100 mm (length) x 50 mm (width) x 3 mm (thickness) was used, and it was obtained in each example and each comparative example on one side of the steel plate. Each test steel sheet was obtained by uniformly applying 1 mL of an asphalt mixture adhesion inhibitor. Next, 10 g of asphalt mixture (trade name “Straight Asphalt Mixture” manufactured by Nichireki Co., Ltd.) heated in advance to about 170 ° C. is placed on the end face of each test steel plate, and the temperature condition of 170 ° C. is used as it is. And kept warm for 1 hour. Subsequently, after taking out the said test steel plate from a heat retention furnace and leaving it to stand for 1 minute, the said test steel plate was stood | rightened vertically, the behavior of the subsequent asphalt compound material was observed, and it evaluated based on the following five-step evaluation criteria.
<Evaluation criteria for adhesion prevention>
5: Asphalt mixture easily peels off and slides off, no adhesion to the test steel plate is observed 4: Asphalt mixture peels off easily and slides down, but slight adhesion is observed 3: Asphalt mixture is easily Peel off and slide down, but some adhesion is observed 2: When the asphalt mixture slides down, it remains on the test steel plate and adheres to almost the entire surface 1: Asphalt mixture adheres to the test steel plate and slides off without peeling off Absent

(2) Evaluation method for impact on rubber In order to evaluate the impact on deterioration of tires such as tire rollers, the impact on natural rubber by the asphalt mixture adhesion inhibitor obtained in each Example and each Comparative Example was examined. evaluated. That is, a 200 mL beaker was charged with 100 mL of an asphalt mixture adhesion inhibitor diluted 100 times with water, and a rubber piece of 30 mm (length) × 30 mm (width) × 50 mm (thickness) was immersed therein at 25 ° C. For 2 hours. The state of the rubber piece after being left for 2 hours was visually observed and evaluated based on the following four-stage evaluation criteria.
<Evaluation criteria for impact on rubber>
◎: No effect on rubber ○: No discoloration or swelling of rubber, but slightly softer △: Some discoloration or swelling of rubber is observed, but there is little effect on rubber ×: Rubber discolors or swells The impact on rubber is great.

(3) Evaluation method of wettability with respect to steel sheet First, a 100 mm (longitudinal) x 50 mm (width) x 3 mm (thickness) steel sheet was used, and the asphalt mixture obtained in each example and each comparative example on one side of the steel sheet. Each of the test steel plates was obtained by uniformly applying 1 mL of an adhesion inhibitor. And the wetting area (%) of the application surface of the asphalt compound adhesion inhibitor of each test steel plate was measured.

(Example 1)
10 parts by mass of d-limonene and 10 parts by mass of an α-olefin mixture comprising 56% by mass of 1-dodecene and 44% by mass of 1-tetradecene were uniformly mixed to obtain an asphalt mixture adhesion inhibitor.

(Example 2)
10 parts by mass of an α-olefin mixture composed of 10 parts by mass of d-limonene, 56% by mass of 1-dodecene and 44% by mass of 1-tetradecene, and an ethylene oxide 10 mol adduct of a primary alcohol having 12 to 14 carbon atoms. (Nonionic surfactant) 10 parts by mass were uniformly mixed to obtain an asphalt mixture adhesion inhibitor.

(Example 3)
10 parts by mass of d-limonene, 10 parts by mass of an α-olefin mixture comprising 56% by mass of 1-dodecene and 44% by mass of 1-tetradecene, and a stearic acid ester of 10 mol lauryl alcohol ethylene oxide adduct (nonionic surface activity Agent) 10 parts by mass were uniformly mixed to obtain an asphalt mixture adhesion inhibitor.

Example 4
10 parts by weight of an α-olefin mixture consisting of 10 parts by weight of d-limonene, 56% by weight of 1-dodecene and 44% by weight of 1-tetradecene; and di-2-ethylhexyl sulfosuccinate sodium salt (anionic surfactant) 5 The mass part was uniformly mixed to obtain an asphalt mixture adhesion preventive agent.

(Example 5)
10 parts by mass of d-limonene, 10 parts by mass of an α-olefin mixture consisting of 60% by mass of 1-hexadecene and 40% by mass of 1-octadecene, and an oleic acid diethanolamine salt (molar ratio of anionic surfactant, oleic acid and diethanolamine) 1: 1) 5 parts by mass were uniformly mixed to obtain an asphalt mixture adhesion inhibitor.

(Example 6)
10 parts by mass of an α-olefin mixture composed of 10 parts by mass of d-limonene, 60% by mass of 1-hexadecene and 40% by mass of 1-octadecene, and an adduct of 10 moles of ethylene oxide of a primary alcohol having 12 to 14 carbon atoms. (Nonionic surfactant) 2 parts by mass and 2 parts by mass of oleic acid diethanolamine salt (anionic surfactant, molar ratio of oleic acid to diethanolamine 1: 1) are mixed uniformly to prepare an asphalt mixture adhesion inhibitor. Obtained.

(Example 7)
10 parts by weight of d-limonene, 2 parts by weight of 1-decene, 20 parts by weight of butyl alcohol ethylene oxide 3 mol adduct (nonionic surfactant), diethanolamine oleate (anionic surfactant, oleic acid and diethanolamine) The molar ratio of 1: 1) and 5 parts by mass were uniformly mixed to obtain an asphalt mixture adhesion inhibitor.

(Example 8)
10 parts by mass of d-limonene, 5 parts by mass of 1-decene, 20 parts by mass of butyl alcohol ethylene oxide 3 mol adduct (nonionic surfactant), diethanolamine salt of oleic acid (anionic surfactant, oleic acid and diethanolamine) The molar ratio of 1: 1) 5 parts by mass and 60 parts by mass of water were uniformly mixed to obtain an asphalt mixture adhesion inhibitor.

(Comparative Example 1)
d-Limonene was used as an asphalt mixture adhesion inhibitor for comparison.

(Comparative Example 2)
An α-olefin mixture composed of 56% by mass of 1-dodecene and 44% by mass of 1-tetradecene was used as an asphalt mixture adhesion inhibitor for comparison.

(Comparative Example 3)
10 parts by mass of d-limonene, 2 parts by mass of an ethylene oxide 10 mol adduct (nonionic surfactant) of a primary alcohol having 12 to 14 carbon atoms, diethanolamine oleate (anionic surfactant, oleic acid and Diethanolamine molar ratio 1: 1) 2 parts by mass were uniformly mixed to obtain an asphalt mixture adhesion inhibitor for comparison.

(Comparative Example 4)
Asphalt mixture for comparison by uniformly mixing 10 parts by mass of d-limonene and 1 part by mass of oleic acid triethanolamine salt (anionic surfactant, molar ratio of oleic acid to triethanolamine 1: 1) An anti-adhesive agent was obtained.

(Comparative Example 5)
General industrial heavy oil (trade name “A heavy oil” manufactured by Shin Nippon Oil Co., Ltd.) was used as an asphalt mixture adhesion inhibitor for comparison.

(Comparative Example 6)
Edible rapeseed white squeezed oil (polyhydric alcohol fatty acid ester) was used as an asphalt mixture adhesion inhibitor for comparison.

  Examples 1-8 The characteristics of the asphalt mixture adhesion inhibitor obtained in Examples and Comparative Examples 1-6 were evaluated using the above-described evaluation methods. The obtained results are shown in Table 1.

  As is clear from the results shown in Table 1, the asphalt mixture adhesion inhibitor of the present invention (Examples 1 to 8) using a terpene compound (d-limonene) and an α-olefin compound as active ingredients. In comparison with the asphalt mixture adhesion inhibitor obtained in Comparative Examples 1 to 6, it was confirmed that the wettability to the coated surface was sufficiently high. Therefore, in the asphalt mixture adhesion preventive agent (Examples 1 to 8) of the present invention, the asphalt mixture adhesion preventing property, the performance to prevent the influence on rubber, and the wettability with respect to the steel sheet are balanced at a high level. It was confirmed that it can be demonstrated. In the asphalt mixture adhesion preventive agent (Examples 1 to 8) of the present invention, since the wettability to the coated surface is particularly high, the asphalt mixture is actually supplied to the loading surface of the transport vehicle. In addition, the asphalt mixture adhesion preventive agent can be supplied without any unevenness or repellency on the loading surface, and the asphalt mixture adhesion prevention property can be supplied more uniformly on the loading surface, so that the asphalt mixture adhesion prevention property is more reliably imparted. It becomes possible. In addition, in the asphalt mixture adhesion preventive agent (Examples 1 to 8) of the present invention with improved wettability as described above, it is possible to improve the work efficiency when applying this.

  As described above, according to the present invention, the wettability with respect to the surface to be supplied is sufficiently high, and it is possible to more reliably provide the supply surface with a high degree of adhesion prevention to the asphalt composite material, such as a tire roller. It is possible to provide an asphalt mixture adhesion preventing agent that can sufficiently prevent deterioration of rubber and that can sufficiently improve problems of environmental pollution such as air pollution and work environment.

  Therefore, the asphalt mixture adhesion preventive agent of the present invention can be applied to equipment that handles asphalt mixture, and the asphalt mixture to the base material without adversely affecting the road pavement surface or the rolling wheel part. The adhesion of materials can be prevented, the work efficiency of transportation and pavement can be improved, and the problem of environmental pollution such as air pollution and the problem of work environment can be improved.

Claims (5)

  An asphalt mixture adhesion inhibitor comprising a terpene compound and a linear α-olefin compound as active ingredients.   The asphalt mixture adhesion inhibitor according to claim 1, wherein the linear α-olefin compound has 6 to 24 carbon atoms.   The asphalt mixture adhesion inhibitor according to claim 1 or 2, wherein the terpene compound has a boiling point of 150 ° C or higher.   The asphalt mixture adhesion inhibitor according to any one of claims 1 to 3, further comprising a nonionic surfactant and / or an anionic surfactant as an active ingredient.   The asphalt mixture adhesion inhibitor according to any one of claims 1 to 4, further comprising a solvent for diluting or emulsifying the active ingredient.