WO2018221322A1 - アスファルト改質剤、アスファルト組成物、及び道路舗装用アスファルト混合物 - Google Patents
アスファルト改質剤、アスファルト組成物、及び道路舗装用アスファルト混合物 Download PDFInfo
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- WO2018221322A1 WO2018221322A1 PCT/JP2018/019662 JP2018019662W WO2018221322A1 WO 2018221322 A1 WO2018221322 A1 WO 2018221322A1 JP 2018019662 W JP2018019662 W JP 2018019662W WO 2018221322 A1 WO2018221322 A1 WO 2018221322A1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/10—Homopolymers or copolymers of unsaturated ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/062—Copolymers with monomers not covered by C08L33/06
- C08L33/068—Copolymers with monomers not covered by C08L33/06 containing glycidyl groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/20—Mixtures of bitumen and aggregate defined by their production temperatures, e.g. production of asphalt for road or pavement applications
- C08L2555/22—Asphalt produced above 140°C, e.g. hot melt asphalt
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
- C08L2555/84—Polymers comprising styrene, e.g., polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers
Definitions
- the present invention relates to an asphalt modifier, an asphalt composition, and an asphalt mixture for road paving.
- the asphalt may be modified with a modifier containing a polyolefin resin (for example, Patent Document 1).
- a modifier containing a polyolefin resin for example, Patent Document 1.
- suppressing asphalt peeling is important in reducing road damage due to peeling.
- the asphalt composition since the road surface may reach a high temperature (for example, 56 ° C. or higher), the asphalt composition is also required to have high heat resistance (high softening point).
- An object of one aspect of the present invention is to provide an asphalt composition that has good heat resistance and further improved properties in terms of peeling resistance and toughness.
- One aspect of the present invention relates to an asphalt modifier containing a polyolefin copolymer containing a monomer unit derived from ethylene and a monomer unit having an epoxy group. Content of the monomer unit which has an epoxy group is 13 mass% or more on the basis of the mass of a polyolefin-type copolymer.
- the present invention also relates to the use or application of the polyolefin copolymer for modifying an asphalt composition and the use or application of the polyolefin copolymer for producing an asphalt composition.
- the asphalt modifier according to the present invention can provide an asphalt composition having good heat resistance and further improved properties in terms of peeling resistance and toughness.
- the melt flow rate of the polyolefin copolymer may be 300 g / 10 min or less. Thereby, the heat resistance of the asphalt composition is further improved.
- the asphalt modifier may further contain a styrene butadiene styrene block copolymer.
- a styrene butadiene styrene block copolymer By combining the polyolefin copolymer and the styrene butadiene styrene block copolymer, an asphalt composition exhibiting more excellent characteristics in terms of heat resistance and peeling resistance can be obtained.
- Another aspect of the present invention provides an asphalt composition that is a melt-kneaded mixture of a raw material mixture containing the asphalt modifier and asphalt.
- This asphalt composition has good heat resistance and can exhibit further improved characteristics in terms of peel resistance and toughness.
- the content of the polyolefin copolymer in the raw material mixture may be 0.01 to 3% by mass based on the mass of the raw material mixture. Even with such a relatively small content, a sufficient reforming effect by the modifier can be obtained.
- Still another aspect of the present invention provides an asphalt mixture for road pavement containing the asphalt composition and an aggregate.
- an asphalt composition and an asphalt mixture having good heat resistance and further improved properties in terms of peeling resistance and toughness, and a modifier for obtaining them are provided. .
- An asphalt composition according to an embodiment is a melt-kneaded mixture of a raw material mixture containing asphalt and an asphalt modifier containing a polyolefin copolymer containing a monomer unit derived from ethylene and a monomer unit having an epoxy group. It is.
- the asphalt contained in the asphalt composition or the raw material mixture for forming the same is not particularly limited. , Tar-modified straight asphalt, or a combination thereof.
- the polyolefin copolymer in the asphalt modifier contains 13% by mass or more of monomer units having an epoxy group based on the mass of the polyolefin copolymer.
- the content of the monomer unit having an epoxy group may be 15% by mass or more, or 17% by mass or more. If the amount of the epoxy group in the polyolefin-based copolymer is excessively large, the raw material mixture containing asphalt and the modifier may gel, and kneading may not be performed or may become difficult. Therefore, the content of the monomer unit having an epoxy group may be 25% by mass or less, or 20% by mass or less based on the mass of the polyolefin-based copolymer.
- the monomer unit having an epoxy group may be, for example, a monomer unit derived from an unsaturated carboxylic acid glycidyl ester or a monomer unit derived from a glycidyl ether having an unsaturated group.
- the unsaturated carboxylic acid glycidyl ester may be a compound represented by the following formula (1).
- R 5 represents an alkenyl group having 2 to 18 carbon atoms which may have one or more substituents.
- Examples of the compound represented by the formula (1) include glycidyl acrylate, glycidyl methacrylate, and itaconic acid glycidyl ester.
- the glycidyl ether having an unsaturated group may be a compound represented by the following formula (2).
- R 6 represents an alkenyl group having 2 to 18 carbon atoms which may have one or more substituents
- X represents CH 2 —O or an oxygen atom.
- Examples of the compound represented by the formula (2) include allyl glycidyl ether, 2-methylallyl glycidyl ether, and styrene-p-glycidyl ether.
- the polyolefin-based copolymer may be a binary copolymer composed of ethylene and a monomer having an epoxy group, or may be a ternary or higher copolymer further containing other monomers. .
- the content of monomer units derived from other monomers other than monomers having ethylene and epoxy groups is usually 35% by mass or less based on the mass of the polyolefin-based copolymer.
- the polyolefin copolymer may be a random copolymer or a block copolymer.
- the melt flow rate of the polyolefin copolymer may be 300 g / 10 min or less.
- a melt flow rate of 300 g / 10 min or less means that the molecular weight of the polyolefin copolymer is somewhat large.
- the melt flow rate of the polyolefin-based copolymer may be 200 g / 10 min or less, 100 g / 10 min or less, or 50 g / 10 min or less.
- the melt flow rate of the polyolefin-based copolymer may be 3 g / 10 min or more, or 5 g / 10 min or more.
- the melt flow rate of the polyolefin-based copolymer was determined based on JIS7210-1: 2014 under the conditions of 90 ° C. and a load of 2.16 kg, based on Method A (from the weight of the extrudate generated in a predetermined time, 10 This is a value measured by a method of calculating an extrusion rate in units of grams per minute (g / 10 minutes).
- the content of the polyolefin copolymer in the raw material mixture for forming the asphalt composition may be 0.01 to 3% by mass based on the mass of the raw material mixture. Even with such a relatively small content, a sufficient reforming effect by the modifier can be obtained.
- the content of the polyolefin copolymer may be 1.0% by mass or more from the viewpoints of heat resistance and toughness.
- the content of the polyolefin-based copolymer may be 2.5% by mass or less, or 2.0% by mass or less from the economical viewpoint.
- the asphalt modifier according to one embodiment may further contain another resin component, for example, a styrene butadiene styrene block copolymer (hereinafter also referred to as “SBS copolymer”).
- SBS copolymer a styrene butadiene styrene block copolymer
- each of the polyolefin copolymer and the SBS copolymer may be mixed with asphalt, or the polyolefin copolymer and the SBS copolymer may be mixed.
- a modifier containing a coalescence may be prepared in advance and mixed with asphalt.
- the content of the SBS copolymer in the raw material mixture for forming the asphalt composition is, for example, 0.5% by mass or more, 1.0% by mass or more, or 2.0% by mass or more based on the mass of the raw material mixture. It may be 10 mass% or less, 8 mass% or less, or 5 mass% or less.
- the asphalt composition according to an embodiment or the raw material mixture for forming the asphalt composition may further contain other components other than the asphalt and the modifier as necessary without departing from the gist of the present invention.
- the total content of asphalt and asphalt modifier in the raw material mixture is usually 90 to 100% by mass, or 95 to 100% by mass, based on the mass of the raw material mixture.
- the asphalt composition can be obtained by a method including a step of melt-kneading a raw material mixture containing asphalt and an asphalt modifier.
- the melt kneading temperature may be a temperature at which the asphalt and the asphalt modifier are melted, and is, for example, 100 to 250 ° C. or 160 to 200 ° C.
- the melt kneading time is, for example, 1 to 6 hours.
- the asphalt mixture for road pavement which concerns on one Embodiment contains the asphalt composition which concerns on the said embodiment, and an aggregate.
- the kind of aggregate and the content thereof can be appropriately adjusted within a range generally employed in the field of road pavement.
- the aggregate content may be, for example, 1000 to 10000 parts by mass, where the mass of the asphalt composition is 100 parts by mass.
- the asphalt mixture may contain other components such as a filler as required.
- Raw materials (1) Asphalt / straight asphalt (hereinafter sometimes referred to as “StAs”): StAs, manufactured by JXTG Energy Co., Ltd., penetration: 60-80 ° (2) Modifier / Styrenic thermoplastic elastomer (hereinafter sometimes referred to as “SBS copolymer” or “SBS”): T437L and T432L (manufactured by Asahi Kasei Corporation) -Ethylene / glycidyl methacrylate copolymer (hereinafter sometimes referred to as "E / GMA copolymer” or "E / GMA”): Bond First E (hereinafter sometimes referred to as "BF-E”), Bond First 20C (hereinafter sometimes referred to as “BF-20C”) and Bond First CG5001 (hereinafter sometimes referred to as “CG5001”) (manufactured by Sumitomo Chemical Co., Ltd.) Prototype A (E / GMA copolymer prepared for
- the asphalt composition of the Example or the comparative example was prepared in the following procedures. First, StAs was left in an oven at 160 ° C. for 2 hours. A predetermined amount of StAs having fluidity was placed in an aluminum can and cooled to room temperature. Subsequently, an SBS copolymer or E / GMA copolymer as a modifier was placed on the asphalt in the aluminum can.
- An aluminum block thermostat (manufactured by Taitec Co., Ltd., dry thermo unit DTU-2CN) was set at 180 ° C. After the temperature of the aluminum block reached the set temperature, an aluminum can containing asphalt and a modifier as a raw material mixture was placed therein, and the raw material mixture was softened by preheating for 30 to 40 minutes. A homomixer MARKII2.5 type stirring unit was inserted into the softened raw material mixture, and the raw material mixture was stirred while gradually increasing the rotation speed of the stirring unit. After the rotation speed reached 7000 rpm, stirring was continued while maintaining the rotation speed. When the heating time was 4 hours including preheating, the stirring part was taken out, and the aluminum can was taken out from the aluminum block. Air bubbles were removed from the asphalt composition formed in the aluminum can by allowing the aluminum can to stand in an oven at 160 ° C. for 3 hours. Samples for each evaluation test were collected from the asphalt composition maintaining fluidity.
- Viscosity The viscosity at 175 ° C. of the asphalt composition was measured by the following procedure according to the method for measuring the viscosity of a liquid specified in JIS Z8803: 2011. A sample of the asphalt composition was placed in a sample storage jig of a B type viscometer equipped with a 27 type spindle. While the asphalt composition was heated to 175 ° C., the viscosity was measured under the condition of a spindle rotation speed of 50 rpm.
- the peel resistance of the asphalt composition was evaluated by the following test according to JPI-5S-27-86 “Asphalt Coating Peelability Test Method”. Aggregates with a particle size of 10 to 13 mm were prepared from No. 6 crushed stone by classification using 13 mm and 10 mm sieves. The aggregate was washed with water and then dried in a hot air dryer set at 150 ° C. until a constant weight was reached. An asphalt composition heated to a temperature lower than 80 ° C. above the softening point of the asphalt composition was applied to the dried aggregate, and the aggregate surface was completely covered with the asphalt composition. The ratio of the asphalt composition to 100 g of aggregate was set to 5.5 ⁇ 0.2 g.
- FIG. 1 is a photograph showing an example of a sample after immersion in warm water (around pH 7) at 80 ° C. In the asphalt coating sample 20 of the comparative example, many peeling of the asphalt composition was observed. In contrast, in the asphalt-coated sample 10 of the example, the asphalt composition peeled off very little.
- Toughness A 50 g sample of the asphalt composition was taken into a test cup of a test jig for toughness tenacity. The position of the test cup containing the sample was adjusted so that the flat surface of the metal hemisphere of the tension head jig was at the same height as the liquid surface of the sample, and the metal hemisphere of the tension head jig was brought into contact with the sample. In that state, the sample was allowed to stand overnight in an environment of 23 ° C. and 50% humidity. Thereafter, using a tensile tester (manufactured by Shimadzu Corporation), the sample was pulled in the extension direction by moving the tension head jig upward at a speed of 500 mm / min.
- the load was measured while the sample was extended to a displacement of 30 cm, and a load displacement diagram was obtained.
- the area under the obtained load displacement diagram, that is, the integrated value (J) of load ⁇ displacement was recorded as the toughness (holding force) of the asphalt composition.
- Table 1 shows the evaluation results. Table 1 also shows the melt flow rate (MFR) of each copolymer and the content (GMA ratio) of monomer units derived from glycidyl methacrylate in the E / GMA copolymer.
- MFR melt flow rate
- GMA ratio content of monomer units derived from glycidyl methacrylate in the E / GMA copolymer.
- the asphalt compositions of Comparative Examples 2 to 4 using an SBS copolymer as a modifier were not sufficient in terms of peel resistance.
- the asphalt composition of Comparative Example 5 using an E / GMA copolymer having a monomer unit content derived from glycidyl methacrylate (GMA) of less than 13% by mass alone as a modifier has a slightly low softening point. Moreover, when judging comprehensively including peeling resistance and toughness, it did not necessarily show sufficient characteristics.
- the asphalt composition of Comparative Example 6 in which the E / GMA copolymer having an amount of monomer units derived from GMA of less than 13% by mass and the SBS copolymer were used together showed low peel resistance.
- the asphalt composition of the example using the modifier containing the E / GMA copolymer having a monomer unit content of 13% by mass or more derived from GMA exhibits a relatively high softening point and has a peeling resistance. In addition, excellent characteristics were exhibited in terms of toughness.
- the asphalt compositions of Examples 2 to 11 in which the MFR of the E / GMA copolymer was 300 or less exhibited a high softening point of 56 ° C. or more and particularly excellent characteristics in terms of heat resistance.
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Abstract
Description
(1)アスファルト
・ストレートアスファルト(以下「StAs」ということがある。):StAs、JXTGエネルギー株式会社製、針入度:60~80°
(2)改質剤
・スチレン系熱可塑性エラストマー(以下「SBS共重合体」又は「SBS」ということがある。):T437L、及びT432L(旭化成株式会社製)
・エチレン/グリシジルメタクリレート共重合体(以下「E/GMA共重合体」又は「E/GMA」ということがある。):ボンドファーストE(以下「BF-E」ということがある。)、ボンドファースト20C(以下「BF-20C」ということがある。)、及びボンドファーストCG5001(以下「CG5001」ということがある。)(住友化学株式会社製)
・試作品A(本試験のために準備した、グリシジルメタクリレートに由来するモノマー単位の含有量が18質量%、メルトフローレートが32g/10分のE/GMA共重合体)
・試作品B(本試験のために準備した、グリシジルメタクリレートに由来するモノマー単位の含有量が20質量%、メルトフローレートが7g/10分のE/GMA共重合体)
表1に示す組成(質量%)を有する原料混合物から、実施例又は比較例のアスファルト組成物を以下の手順で調製した。まず、StAsを160℃のオーブン内に2時間放置した。流動性を持った状態のStAsの所定量をアルミ缶内に入れ、室温まで冷却した。続いて、アルミ缶内のアスファルトに、改質剤としてのSBS共重合体又はE/GMA共重合体を載せた。
(1)粘度
JIS Z8803:2011に規定される液体の粘度測定方法に準じた以下の手順で、アスファルト組成物の175℃における粘度を測定した。
アスファルト組成物のサンプルを、27型スピンドルを装着したB型粘度計のサンプル収容冶具に入れた。アスファルト組成物を175℃に加熱しながら、スピンドルの回転速度50rpmの条件で粘度を測定した。
JIS K2207に従った試験によって、各アスファルト組成物の針入度を測定した。針入度が大きいことは、アスファルトが柔らかいことを意味する。
JIS K2207に従った試験によって、アスファルト組成物の軟化点を測定した。
JPI-5S-27-86「アスファルト被膜のはく離性試験方法」に準じた以下の試験によって、アスファルト組成物の剥離抵抗性を評価した。
6号砕石の中から、13mm及び10mmの篩を用いた分級により、粒径10~13mmの骨材を準備した。骨材は、水洗してから、150℃に設定した熱風乾燥器中で、一定の重量になるまで乾燥した。乾燥した骨材に、アスファルト組成物の軟化点より80℃高い温度よりも低い温度に加熱したアスファルト組成物を塗布し、骨材の表面をアスファルト組成物で完全に被覆した。骨材100gに対するアスファルト組成物の比率を5.5±0.2gとした。得られたアスファルト被覆サンプルをガラス板上に広げ、80℃の温水(pH7付近)、80℃の酸性の水(pH5)、又は80℃の塩基性の水(pH10)に1週間浸漬した。浸漬後、アスファルト組成物が剥離していない部分の面積の割合を測定した。図1は、80℃の温水(pH7付近)に浸漬後のサンプルの例を示す写真である。比較例のアスファルト被覆サンプル20では、アスファルト組成物の剥離が多く観察された。これに対して、実施例のアスファルト被覆サンプル10では、アスファルト組成物の剥離は非常に少なかった。
タフネス・テナシティ用の試験治具の試験カップに、アスファルト組成物のサンプルを50g分取した。サンプルが入った試験カップの位置を、テンションヘッド治具の金属半球の平面部がサンプルの液面と同じ高さになるように調整して、テンションヘッド冶具の金属半球をサンプルに接触させた。その状態で、サンプルを23℃、湿度50%の環境下で1晩静置した。その後、引張試験器(株式会社島津製作所製)を用い、500mm/分の速度でテンションヘッド冶具を上方に移動させることで、サンプルを伸長方向へ引っ張った。サンプルが変位30cmまで伸びる間の荷重を測定し、荷重変位線図を得た。得られた荷重変位線図の下側の面積、すなわち荷重×変位の積算値(J)を、アスファルト組成物のタフネス(把握力)として記録した。
Claims (6)
- エチレンに由来するモノマー単位及びエポキシ基を有するモノマー単位を含むポリオレフィン系共重合体を含有し、前記エポキシ基を有するモノマー単位の含有量が、前記ポリオレフィン系共重合体の質量を基準として13質量%以上である、アスファルト改質剤。
- 前記ポリオレフィン系共重合体のメルトフローレートが300g/10分以下である、請求項1に記載のアスファルト改質剤。
- スチレンブタジエンスチレンブロック共重合体を更に含有する、請求項1又は2に記載のアスファルト改質剤。
- 請求項1~3のいずれか一項に記載のアスファルト改質剤とアスファルトとを含有する原料混合物の溶融混練物である、アスファルト組成物。
- 前記原料混合物における前記ポリオレフィン系共重合体の含有量が、前記原料混合物の質量を基準として0.01~3質量%である、請求項4に記載のアスファルト組成物。
- 請求項4又は5に記載のアスファルト組成物と、骨材と、を含有する、道路舗装用アスファルト混合物。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2019522144A JP7101173B2 (ja) | 2017-05-29 | 2018-05-22 | アスファルト改質剤、アスファルト組成物、及び道路舗装用アスファルト混合物 |
US16/616,102 US11267970B2 (en) | 2017-05-29 | 2018-05-22 | Asphalt modifier, asphalt composition, and asphalt mixture for road pavement |
EP18810075.4A EP3632990B8 (en) | 2017-05-29 | 2018-05-22 | Asphalt modifier, asphalt composition, and asphalt mixture for road pavement |
CN201880035310.3A CN110678519A (zh) | 2017-05-29 | 2018-05-22 | 沥青改性剂、沥青组合物、和道路铺装用沥青混合物 |
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JP2017-105798 | 2017-05-29 | ||
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110105685A (zh) * | 2019-05-05 | 2019-08-09 | 东莞广泰公路材料科技有限公司 | 一种沥青的改性剂 |
WO2023162399A1 (ja) * | 2022-02-28 | 2023-08-31 | 住友化学株式会社 | アスファルト組成物及びアスファルト舗装材組成物 |
WO2023223654A1 (ja) * | 2022-05-19 | 2023-11-23 | 住友化学株式会社 | アスファルト組成物及びアスファルト舗装材組成物 |
WO2023223653A1 (ja) * | 2022-05-19 | 2023-11-23 | 住友化学株式会社 | アスファルト組成物及びアスファルト舗装材組成物 |
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CN113717462A (zh) * | 2020-05-25 | 2021-11-30 | 合肥杰事杰新材料股份有限公司 | 一种低收缩率、高韧性聚丙烯复合材料及其制备方法 |
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- 2018-05-22 US US16/616,102 patent/US11267970B2/en active Active
- 2018-05-22 CN CN201880035310.3A patent/CN110678519A/zh active Pending
- 2018-05-22 EP EP18810075.4A patent/EP3632990B8/en active Active
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JP7101173B2 (ja) | 2022-07-14 |
JPWO2018221322A1 (ja) | 2020-03-26 |
US11267970B2 (en) | 2022-03-08 |
EP3632990B1 (en) | 2023-09-27 |
EP3632990B8 (en) | 2023-11-01 |
CN110678519A (zh) | 2020-01-10 |
EP3632990A1 (en) | 2020-04-08 |
EP3632990A4 (en) | 2020-11-25 |
US20200157351A1 (en) | 2020-05-21 |
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