JP5034068B2 - Asphalt adhesion inhibitor - Google Patents
Asphalt adhesion inhibitor Download PDFInfo
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- JP5034068B2 JP5034068B2 JP2006052703A JP2006052703A JP5034068B2 JP 5034068 B2 JP5034068 B2 JP 5034068B2 JP 2006052703 A JP2006052703 A JP 2006052703A JP 2006052703 A JP2006052703 A JP 2006052703A JP 5034068 B2 JP5034068 B2 JP 5034068B2
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- asphalt
- fatty acid
- acid esters
- polyoxyethylene sorbitan
- asphalt adhesion
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- 239000010426 asphalt Substances 0.000 title claims description 49
- 239000003112 inhibitor Substances 0.000 title claims description 12
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 27
- 239000000194 fatty acid Substances 0.000 claims description 27
- 229930195729 fatty acid Natural products 0.000 claims description 27
- -1 fatty acid esters Chemical class 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- 238000009835 boiling Methods 0.000 claims description 11
- 241000196324 Embryophyta Species 0.000 claims description 10
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 9
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 150000002334 glycols Chemical class 0.000 claims description 7
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 claims description 5
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 5
- 229920000053 polysorbate 80 Polymers 0.000 claims description 5
- 235000019484 Rapeseed oil Nutrition 0.000 claims description 4
- 239000004147 Sorbitan trioleate Substances 0.000 claims description 4
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 claims description 4
- 235000019337 sorbitan trioleate Nutrition 0.000 claims description 4
- 229960000391 sorbitan trioleate Drugs 0.000 claims description 4
- 235000012343 cottonseed oil Nutrition 0.000 claims description 3
- 239000002385 cottonseed oil Substances 0.000 claims description 3
- 230000003449 preventive effect Effects 0.000 claims description 3
- 235000012424 soybean oil Nutrition 0.000 claims description 3
- 239000003549 soybean oil Substances 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 2
- 239000008158 vegetable oil Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 230000003405 preventing effect Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 8
- 230000000181 anti-adherent effect Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 231100000209 biodegradability test Toxicity 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019198 oils Nutrition 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- 231100000215 acute (single dose) toxicity testing Toxicity 0.000 description 1
- 238000011047 acute toxicity test Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 description 1
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 description 1
- 239000001818 polyoxyethylene sorbitan monostearate Substances 0.000 description 1
- 235000010989 polyoxyethylene sorbitan monostearate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000820 toxicity test Toxicity 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
- Road Paving Structures (AREA)
Description
本発明は、舗装用加熱アスファルト混合物(以下、アスファルトという)の付着を防止できるアスファルト付着防止剤に関し、タイヤローラなどの舗装用ローラの転圧車輪部などへのアスファルトの付着防止性及び付着物の除去性に優れ、舗装品質をより安定した状態に仕上げることができ、使用上自然界への流出時でも生分解性に優れ毒性も極めて少ない環境汚染の少ないアスファルト付着防止剤に関するものである。 The present invention relates to an asphalt adhesion preventing agent capable of preventing adhesion of a heated asphalt mixture (hereinafter referred to as asphalt) for paving, and the asphalt adhesion preventing property to the rolling wheel portion of a paving roller such as a tire roller and the like. The present invention relates to an asphalt adhesion preventing agent that has excellent removability, can finish pavement quality in a more stable state, has excellent biodegradability and is extremely toxic even when it flows into the natural world, and has little toxicity.
アスファルト舗装する場合、締固め機械としてタイヤローラなどが使用されている。十分に固化しないアスファルト施工面をタイヤローラで転圧すると、アスファルトと骨材がタイヤなどに付着し転圧面がきれいに仕上らない。そこで、タイヤローラなどに従来からアスファルト付着防止剤が用いられている。従来、アスファルト舗装の施工時に使用されるアスファルト付着防止剤としては、軽油、重油、及び鉱油の乳化物あるいは切削油乳剤の希釈液などが用いられ、これらをローラ面などに噴霧しながら転圧しており、アスファルト舗装品質をより安定した状態に仕上げるためにアスファルト付着防止剤を最小必要以上に噴霧している状況にある。これらのアスファルト付着防止剤は、石油から生産されるオイルを中心に構成されているため、舗装面のアスファルトを溶かしたりタイヤローラを劣化させるという問題のほかに、自然界では分解され難く生態系に蓄積され易いなどの問題点があった。特に近年行われている透水性舗装や排水性舗装では付着防止剤が下水に流入しやすいため環境汚染への配慮が要求されている。
上記の問題を解決するものとして、特定の界面活性剤を配合するもの(特許文献1)や、特定の脂肪酸エステルと界面活性剤を用いたものなどが提案されている(特許文献2)。
As solutions for solving the above-mentioned problems, those containing a specific surfactant (Patent Document 1) and those using a specific fatty acid ester and a surfactant have been proposed (Patent Document 2).
本発明は、各場所におけるアスファルト舗装の施工時に使用されるアスファルト付着防止剤が自然界へ流出した場合でも生態系に与える影響が少なく、特に下水処理場への通路が少ない農道や山道への環境に配慮したアスファルト付着防止剤を提供することを目的とする。 The present invention has little impact on the ecosystem even when the asphalt adhesion preventive agent used in the construction of asphalt pavement in each place leaks into the natural world, especially in the environment to farm roads and mountain roads with few passages to sewage treatment plants. It aims at providing the asphalt adhesion prevention agent in consideration.
本発明者らは、上記課題を解決するために鋭意検討を行った結果、植物系脂肪酸エステル類、界面活性剤であるソルビタン系脂肪酸エステル類、グリコール類及び沸点が160℃〜200℃の脂肪族炭化水素を含む組成物によって,上記課題を解決することができることを見出し、この知見に基づいて本発明を完成するに至った。 As a result of intensive studies to solve the above problems, the present inventors have found that plant fatty acid esters, sorbitan fatty acid esters that are surfactants, glycols, and aliphatics having a boiling point of 160 ° C. to 200 ° C. It has been found that the above-mentioned problems can be solved by a composition containing a hydrocarbon, and the present invention has been completed based on this finding.
本発明のアスファルト付着防止剤は、舗装品質をより安定した状態に仕上げることでき、かつ、タイヤローラ等の締固め機械のタイヤなどにアスファルトが付着するのを防止し、タイヤの劣化や装置の稼動効率の低下を軽減するとともに、付着防止剤による環境汚染を防止することができる。 The asphalt adhesion preventive agent of the present invention can finish the paving quality in a more stable state, and also prevents the asphalt from adhering to the tire of a compacting machine such as a tire roller. While reducing the decrease in efficiency, it is possible to prevent environmental pollution caused by the adhesion preventing agent.
本発明における植物系脂肪酸エステル類は、タイヤローラ等の表面に油膜を形成してアスファルトの付着を防止するものとして配合される。この植物系脂肪酸エステル類としては、ダイズ油、ナタネ油、綿実油等の植物油とアルコール類との反応によって得られる脂肪酸エステルが使用できる。これらの脂肪酸エステルは、1種または2種以上を併せて使用することができる。生分解性の観点からダイズ油、ナタネ油、綿実油に由来する脂肪酸エステルが好ましい。特に、付着防止性及び付着物の除去性の点で、ナタネ油遊離脂肪酸のメチルエステル、エチルエステルが好ましい。
植物系脂肪酸エステル類は、植物系脂肪酸エステル類とソルビタン系脂肪酸エステル類、グリコール類及び沸点が160℃〜200℃の脂肪族炭化水素とからなる組成物(以下、本発明組成物という)に対して、25〜45質量%の範囲で用いられ、好ましくは30〜40質量%、より好ましくは30〜35質量%である。以下、特に記載しない限り、%は質量%を示す。
The plant fatty acid esters in the present invention are blended to form an oil film on the surface of a tire roller or the like to prevent asphalt adhesion. As the plant fatty acid esters, fatty acid esters obtained by reacting vegetable oils such as soybean oil, rapeseed oil and cottonseed oil with alcohols can be used. These fatty acid esters can be used alone or in combination of two or more. From the viewpoint of biodegradability, fatty acid esters derived from soybean oil, rapeseed oil and cottonseed oil are preferred. In particular, methyl ester and ethyl ester of rapeseed oil free fatty acid are preferable from the viewpoint of adhesion prevention and deposit removal.
Plant fatty acid esters are based on a composition comprising plant fatty acid esters, sorbitan fatty acid esters, glycols and aliphatic hydrocarbons having a boiling point of 160 ° C. to 200 ° C. (hereinafter referred to as the present invention composition). In the range of 25 to 45% by mass, preferably 30 to 40% by mass, and more preferably 30 to 35% by mass. Hereinafter, unless otherwise indicated,% indicates mass%.
界面活性剤としてのポリオキシエチレンソルビタン脂肪酸エステル類は、植物系脂肪酸エステル類を含む本発明組成物を均一に溶解ないし分散乳化させるために用いられる。特に、本発明組成物に水を加えて使用する際に均一な溶液又は乳化液とし、これらの安定性のために用いられる。
ポリオキシエチレンソルビタン脂肪酸エステル類としては、例えば、ポリオキシエチレンソルビタンモノラウレート、ポリオキシエチレンソルビタンモノパルミテエート、ポリオキシエチレンソルビタンモノステアレート、ポリオキシエチレンソルビタンモノオレエート、ポリオキシエチレンソルビタントリオレエートなどが挙げられ、好ましくはポリオキシエチレンソルビタントリオレエートが挙げられる。ポリオキシエチレンソルビタン脂肪酸エステル類のエチレンの付加モル数は、特に制限されるものではないが、6〜25モルが好ましい。本発明組成物に対する配合量は、15〜35%の範囲で、好ましくは18〜28%、より好ましくは20〜25%の範囲で用いられる。
Polyoxyethylene sorbitan fatty acid esters as surfactants are used to uniformly dissolve or disperse and emulsify the composition of the present invention containing plant fatty acid esters. In particular, when water is added to the composition of the present invention and used, it is used as a uniform solution or emulsion and used for their stability.
Examples of polyoxyethylene sorbitan fatty acid esters include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate. And polyoxyethylene sorbitan trioleate is preferable. The number of moles of ethylene added to the polyoxyethylene sorbitan fatty acid esters is not particularly limited, but is preferably 6 to 25 moles. The compounding quantity with respect to this invention composition is 15 to 35% of range, Preferably it is 18 to 28%, More preferably, it is used in the range of 20 to 25%.
上記以外に、グリコール類及び沸点が160℃〜200℃の脂肪族炭化水素が用いられる。
グリコール類は、植物系脂肪酸エステル類とソルビタン系脂肪酸エステル類との均一化に効果を有し、本発明組成物及び水で希釈後の付着防止剤の均一化性、均一塗布性に効果を有し、かつ、貯蔵時の安定性に寄与する。
グリコール類としては、エチレングリコール、プロピレングリコール、 等が挙げられる。本発明組成物に対する配合量は、15〜35%、好ましくは18〜28%、より好ましくは20〜25%の範囲である。15%以下では本発明組成物の均一化性が低下し、35%より多いと付着防止効果が低下する場合がある。
In addition to the above, glycols and aliphatic hydrocarbons having a boiling point of 160 ° C. to 200 ° C. are used.
Glycols are effective in homogenizing plant fatty acid esters and sorbitan fatty acid esters, and are effective in homogenizing and coating properties of the anti-adhesion agent after dilution with the composition of the present invention and water. And contributes to stability during storage.
Examples of glycols include ethylene glycol and propylene glycol. The compounding quantity with respect to this invention composition is 15 to 35%, Preferably it is 18 to 28%, More preferably, it is the range of 20 to 25%. If it is 15% or less, the homogeneity of the composition of the present invention is lowered, and if it is more than 35%, the adhesion preventing effect may be lowered.
沸点が160℃〜200℃の脂肪族炭化水素は、グリコール類と同様に植物系脂肪酸エステル類とソルビタン系脂肪酸エステル類の均一化に寄与するほかに、付着防止剤を塗布する際の均一な散布性と塗膜保持性に寄与するので用いられる。
アスファルト付着防止剤は、通常、水で希釈されて使用されるが、通常アスファルト舗装には150℃くらいの温度に加熱したアスファルトが使用されるため、その熱によって付着防止剤の希釈水が蒸発することとなり、タイヤ表面への均一な濡れが不足することとなりアスファルト付着の原因となりやすい。この現象を避け、付着防止剤の均一被覆性を保つためには160℃以上であることが望ましい。沸点が200℃以上となると、付着防止剤の塗布膜からの水分の蒸発量が低下し、使用中での均一被覆性が低下するので好ましくない。
本発明の脂肪族炭化水素は沸点が160℃以上なので大気への急激な蒸発が殆どなく,転圧後はアスファルトに吸収され流れ出すことも少なく環境への影響が少ない。該脂肪族炭化水素としては、この沸点範囲の石油系溶剤が使用できる。本発明組成物に対する含有割合は、好ましくは15〜25%、好ましくは17〜22%程度である。
Aliphatic hydrocarbons having a boiling point of 160 ° C. to 200 ° C. contribute to the homogenization of plant fatty acid esters and sorbitan fatty acid esters in the same manner as glycols, and are evenly dispersed when an anti-adhesive agent is applied. Used because it contributes to the property and the coating film retention.
The asphalt anti-adhesive agent is usually used after being diluted with water. Usually, asphalt pavement is heated to a temperature of about 150 ° C., and the heat of the anti-adhesive agent evaporates. As a result, uniform wetting on the tire surface is insufficient, and asphalt adhesion tends to occur. In order to avoid this phenomenon and maintain the uniform coverage of the anti-adhesive agent, the temperature is preferably 160 ° C. or higher. When the boiling point is 200 ° C. or more, the amount of moisture evaporated from the coating film of the anti-adhesion agent is lowered, and the uniform coverage during use is lowered, which is not preferable.
Since the aliphatic hydrocarbon of the present invention has a boiling point of 160 ° C. or higher, there is almost no rapid evaporation to the atmosphere, and it is hardly absorbed by asphalt after rolling and has little influence on the environment. As the aliphatic hydrocarbon, a petroleum solvent having this boiling range can be used. The content ratio with respect to the composition of the present invention is preferably about 15 to 25%, preferably about 17 to 22%.
本発明組成物は、使用に際しては常法に従って、水で希釈して水溶液ないしは乳化又は分散液として使用する。水による希釈率は特に限定されないが、本発明組成物1質量部に対して水1〜20質量部の範囲である。
なお、本発明組成物には付着防止剤として製品化するにあたり、10〜30%の水を含むものとしても良い。
In use, the composition of the present invention is diluted with water according to a conventional method and used as an aqueous solution, emulsion or dispersion. Although the dilution rate by water is not specifically limited, It is the range of 1-20 mass parts of water with respect to 1 mass part of this invention composition.
The composition of the present invention may contain 10 to 30% water when commercialized as an adhesion inhibitor.
次ぎに、本発明を実施例及び比較例により更に具体的に説明するが、本発明はこれらの例に限られるものではない。
実施例1
脂肪酸エステル(40℃における動粘度が4.5)30%、ポリオキシエチレンソルビタンモノオレエート(エチレン付加モル数が20モル)30%、プロピレングリコール22%、沸点約160℃の脂肪族炭化水素18%からなるアスファルト付着防止剤を調製した。
Next, the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples.
Example 1
Fatty acid ester (kinematic viscosity at 40 ° C: 4.5) 30%, polyoxyethylene sorbitan monooleate (ethylene addition mole number 20 mol) 30%, propylene glycol 22%, aliphatic hydrocarbon 18 having a boiling point of about 160 ° C 18 % Asphalt anti-adhesive agent was prepared.
実施例2
脂肪酸エステル(40℃における動粘度が4.5)30%、ポリオキシエチレンソルビタンモノオレエート(エチレン付加モル数が10モル)15%、ポリオキシエチレンソルビタンモノオレエート(エチレン付加モル数が20モル)15%、エチレングリコール25%、沸点約160℃の脂肪族炭化水素15%からなるアスファルト付着防止剤を調製した。
Example 2
Fatty acid ester (kinematic viscosity at 40 ° C: 4.5) 30%, polyoxyethylene sorbitan monooleate (ethylene addition mole number: 10 moles) 15%, polyoxyethylene sorbitan monooleate (ethylene addition mole number: 20 moles) ) An asphalt adhesion inhibitor comprising 15%, ethylene glycol 25%, and 15% aliphatic hydrocarbon having a boiling point of about 160 ° C. was prepared.
実施例3
脂肪酸エステル(40℃における動粘度が4.5)30%、ポリオキシエチレンソルビタントリオレエート(エチレン付加モル数が20モル)30%、プロピレングリコール22%、沸点約160℃の脂肪族炭化水素18%からなるアスファルト付着防止剤を調製した。
Example 3
30% fatty acid ester (kinematic viscosity at 40 ° C 4.5), 30% polyoxyethylene sorbitan trioleate (20 moles of added ethylene), 22% propylene glycol, 18% aliphatic hydrocarbons with a boiling point of about 160 ° C An asphalt adhesion inhibitor comprising:
比較例1
市販のエマルジョンタイプの切削油100重量%からなるアスファルト付着防止剤を調製した。
Comparative Example 1
An asphalt adhesion inhibitor composed of 100% by weight of a commercially available emulsion type cutting oil was prepared.
試験例1 アスファルト施工現場におけるアスファルトの共用試験
酒井重工業株式会社製のタイヤローラとマカダムローラを用いて、表層用密粒度アスファルト舗装を行いその状況を観察した。実施例及び比較例のアスファルト付着防止剤は、原液をそれぞれ10倍に水で希釈して使用した。これらのアスファルト付着防止剤は、アスファルト舗装面に対しアスファルト付着防止剤の希釈液を含まない原液換算で2〜3mL/m2の割合でタイヤローラの表面及びマカダムローラの鉄輪の表面に噴霧し、タイヤローラは6〜10km/h、マカダムローラは2〜3km/hの速度で転圧した。なお、アスファルト舗装表面の転圧温度は、タイヤローラが70〜130℃、マカダムローラでは100〜160℃であった。タイヤローラ、マカダムローラそれぞれへのアスファルト付着状況、及び舗装面の変色を評価した。評価基準を表1に示し、評価結果を表2に示す。
Test Example 1 Shared test of asphalt at an asphalt construction site Using a tire roller and a macadam roller manufactured by Sakai Heavy Industries, Ltd., a dense granular asphalt pavement for the surface layer was performed and the situation was observed. The asphalt adhesion preventing agents of Examples and Comparative Examples were used after diluting the stock solution 10 times with water. These asphalt anti-adhesive agents are sprayed on the surface of the tire roller and the iron surface of the Macadam roller at a rate of 2 to 3 mL / m 2 in terms of a stock solution that does not contain the diluted solution of the asphalt anti-adhesive agent on the asphalt pavement surface, The tire roller was rolled at a speed of 6 to 10 km / h, and the macadam roller was rolled at a speed of 2 to 3 km / h. The rolling pressure on the asphalt pavement surface was 70 to 130 ° C. for tire rollers and 100 to 160 ° C. for macadam rollers. The asphalt adhesion state to the tire roller and the Macadam roller and the discoloration of the pavement surface were evaluated. The evaluation criteria are shown in Table 1, and the evaluation results are shown in Table 2.
試験例2 生分解性試験
実施例1〜3及び比較例1のアスファルト付着防止剤について生分解性試験を行った。実施例1〜3及び比較例1のアスファルト付着防止剤は、水で10倍に希釈して使用した。
試験方法は、エコマーク基準のOECD 301Cにしたがって、28日以内に60以上分解されるか否かを判定した。結果を表3に示す。
十分に分解された:◎、分解された:○、分解されない:×とした。
Test Example 2 Biodegradability Test Biodegradability tests were performed on the asphalt adhesion inhibitors of Examples 1 to 3 and Comparative Example 1. The asphalt adhesion preventing agents of Examples 1 to 3 and Comparative Example 1 were diluted 10 times with water and used.
According to the OECD 301C of the Eco Mark standard, the test method determined whether or not 60 or more were decomposed within 28 days. The results are shown in Table 3.
Fully decomposed: ◎, decomposed: ◯, not decomposed: x.
試験例3 毒性試験
実施例1〜3及び比較例1のアスファルト付着防止剤についての生態影響性試験として魚類急性毒性試験を行った。
実施例1〜3及び比較例1のアスファルト付着防止剤は、水で10倍に希釈して使用したが、試験量としては含まれる実質成分量とした。
試験方法は、JIS K 102に準拠し、ヒメダカによる96時間でのLC50が100mg/L以上を基準に判定した。結果を表3に示す。
合格:○、不合格:×とした。
Test Example 3 Toxicity Test A fish acute toxicity test was conducted as an ecological impact test on the asphalt adhesion inhibitor of Examples 1 to 3 and Comparative Example 1.
The asphalt adhesion preventing agents of Examples 1 to 3 and Comparative Example 1 were used after being diluted 10 times with water.
The test method was based on JIS K102, and LC 50 in 96 hours by Himedaka was determined based on 100 mg / L or more. The results are shown in Table 3.
Pass: ○, Fail: x.
上記表2及び表3の結果からわかるように、本発明のアスファルト付着防止剤は、舗装面の仕上がりも良好であり、また、舗装面を転圧する装置であるタイヤローラやマカダムローラへのアスファルトの付着も防止でき、かつ、タイヤの損傷も生じせしめない。さらに本発明の付着防止剤は生分解性が良好で環境を汚染することがなく、毒性も無いことから生環境を損なうこともない。
As can be seen from the results in Tables 2 and 3, the asphalt adhesion preventing agent of the present invention has a good finish on the paved surface, and the asphalt applied to the tire roller and the Macadam roller, which is a device for rolling the paved surface. Adhesion can also be prevented and tire damage will not occur. Furthermore, the anti-adhesion agent of the present invention has good biodegradability, does not pollute the environment, and is not toxic, so that the living environment is not impaired.
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