CN114163829B - SBS modified asphalt and preparation method thereof - Google Patents
SBS modified asphalt and preparation method thereof Download PDFInfo
- Publication number
- CN114163829B CN114163829B CN202010952219.7A CN202010952219A CN114163829B CN 114163829 B CN114163829 B CN 114163829B CN 202010952219 A CN202010952219 A CN 202010952219A CN 114163829 B CN114163829 B CN 114163829B
- Authority
- CN
- China
- Prior art keywords
- asphalt
- sbs modified
- modified asphalt
- sbs
- pretreatment agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 164
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 57
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 239000003381 stabilizer Substances 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims description 36
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 17
- 125000003118 aryl group Chemical group 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000035515 penetration Effects 0.000 claims description 15
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 14
- 239000000194 fatty acid Substances 0.000 claims description 14
- 229930195729 fatty acid Natural products 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 229920000137 polyphosphoric acid Polymers 0.000 claims description 11
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 10
- 238000010008 shearing Methods 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- -1 fatty acid glycol ester Chemical class 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 229940005657 pyrophosphoric acid Drugs 0.000 claims description 5
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 claims description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 4
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- 239000005639 Lauric acid Substances 0.000 claims description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 description 18
- 239000011593 sulfur Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000203 mixture Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- SZYSLWCAWVWFLT-UTGHZIEOSA-N [(2s,3s,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)-2-[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxolan-2-yl]methyl octadecanoate Chemical compound O([C@@H]1[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O1)O)[C@]1(COC(=O)CCCCCCCCCCCCCCCCC)O[C@H](CO)[C@@H](O)[C@@H]1O SZYSLWCAWVWFLT-UTGHZIEOSA-N 0.000 description 1
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229940100242 glycol stearate Drugs 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000051 modifying effect Effects 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 229940113116 polyethylene glycol 1000 Drugs 0.000 description 1
- 229940093430 polyethylene glycol 1500 Drugs 0.000 description 1
- 229920000059 polyethylene glycol stearate Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses SBS modified asphalt and a preparation method thereof. The SBS modified asphalt comprises the following components in percentage by mass: 93.7 to 95.8 percent of blended asphalt, 4.0 to 6.0 percent of SBS and 0.2 to 0.3 percent of stabilizer; wherein the blended asphalt comprises the following components in percentage by mass: 99.0 to 99.6 percent of matrix asphalt, 0.2 to 0.5 percent of first pretreatment agent and 0.2 to 0.5 percent of second pretreatment agent. The SBS modified asphalt has good thermal storage stability, and various performances are superior to technical index requirements of SBS modified asphalt in technical Specification for construction of Highway asphalt pavement (JTG F40-2004).
Description
Technical Field
The invention relates to SBS modified asphalt and a preparation method thereof, in particular to qualified SBS modified asphalt prepared from low-asphaltene residual oil and a preparation method thereof.
Background
It is well known that the performance of SBS modified asphalt is related to various influencing factors such as SBS, matrix asphalt, additives such as compatilizers and stabilizers, and processing technology. Wherein the composition of the matrix asphalt has a great influence on the performance of the SBS modified asphalt. The factors which have great influence on the storage stability of SBS modified asphalt are reported in literature as the aromatic content and the asphaltene content in matrix asphalt, when the aromatic content in the matrix asphalt is high (the aromatic content is more than 50 percent), the swelling and the dispersion of SBS in asphalt are facilitated, and when the asphaltene content is in the range of 5-10 percent, the modifying effect of SBS on the matrix asphalt is more ideal. But for some matrix asphalts of relatively specific composition, such as: chinese naphthenic base thickened asphalt has the problems that the compatibility with SBS is poor and the difference between the asphalt and the requirements of a plurality of technical indexes (such as thermal storage stability) of the specified polymer modified asphalt is large because the aromatic component and the asphaltene content of the asphalt are low (the aromatic component is no more than 35 percent and the asphaltene is no more than 1 percent), so that the matrix asphalt with low aromatic component and asphaltene content is difficult to prepare the polymer modified asphalt which meets the specification.
CN201110314561.5 discloses a method for preparing modified asphalt from a low asphaltene content raw material. The method is that the low asphaltene residual oil is firstly thermally cracked, then the cracked oil is distilled and cut to obtain the bottom residue with the normal pressure boiling point higher than 350 ℃, the bottom residue is used as the high asphaltene component for modified asphalt, and then the compatilizer, SBS and stabilizer are added for modification. The preparation process of the method is too complex, which results in a great increase in the production cost of the modified asphalt.
CN201810420181.1 discloses a process for preparing SBS modified asphalt using naphthenic base thickened asphalt. The method adopts a colloid structure regulator to regulate the composition of matrix asphalt to prepare SBS modified asphalt with stable storage, and the method has larger addition amount of the colloid structure regulator, and can not obtain SBS modified asphalt with good storage stability and mainly comprising cycloalkyl thickened asphalt.
In summary, for matrix asphalt with low asphaltene content and low aromatic content, it is generally not suitable as a matrix asphalt for polymer modified asphalt, but how to prepare it into SBS modified asphalt meeting both the requirements of good storage stability and the prescribed technical specifications for polymer modified asphalt is a technical problem to be solved in the art.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide SBS modified asphalt with a relatively simple preparation process and a preparation method thereof aiming at low asphaltene residual oil. The preparation method provided by the invention fundamentally solves the problem that the SBS modified asphalt meeting the regulations is prepared by adopting the matrix asphalt with low asphaltene and low aromatic content. The SBS modified asphalt has good thermal storage stability, and various performances are superior to technical index requirements of SBS modified asphalt in technical Specification for construction of Highway asphalt pavement (JTG F40-2004).
The first aspect of the invention provides SBS modified asphalt, which comprises the following components in percentage by mass:
blending 93.7% -95.8% of asphalt;
SBS 4.0%～6.0%；
0.2 to 0.3 percent of stabilizer.
The blended asphalt comprises the following components in percentage by mass:
99.0 to 99.6 percent of matrix asphalt;
0.2 to 0.5 percent of first pretreatment agent;
0.2 to 0.5 percent of second pretreatment agent.
The matrix asphalt has asphaltene content of no more than 1wt% and aromatic content of no more than 35wt%;
the first pretreatment agent is at least one of dodecanol, dodecyl benzene, polyethylene glycol, fatty acid glycol ester, fatty acid monoglyceride, pentaerythritol fatty acid ester and sucrose fatty acid ester, wherein the fatty acid is preferably at least one of fatty acid of C10-C18, further preferably at least one of stearic acid and lauric acid, and the polyethylene glycol is preferably polyethylene glycol with molecular weight of 800-2000;
the second pretreatment agent is a phosphate-containing inorganic substance, preferably at least one of phosphoric acid, pyrophosphoric acid, metaphosphoric acid and polyphosphoric acid.
The first pretreatment agent is preferably dodecylphenol.
The second pretreatment agent is more preferably polyphosphoric acid. Wherein the polyphosphoric acid is P in polyphosphoric acid 2 O 5 The mass content is more than 80%, preferably P 2 O 5 The mass content is above 83%, and industrial grade or reagent grade polyphosphoric acid can be adopted.
In the above technical scheme, the matrix asphalt may be naphthenic base thickened oil asphalt.
In the technical proposal, the H/C atomic ratio in the matrix asphalt is more than 1.5 and can be 1.5 to 1.6, and the molecular weight (VPO method) is 1000 g.mol -1 The above amount may be 1000-1200 g.mol -1 。
In the technical scheme, the matrix asphalt has the asphaltene content of no more than 1 weight percent and the aromatic content of no more than 35 weight percent.
In the technical scheme, the normal pressure boiling point of the matrix asphalt is more than 350 ℃, the penetration degree at 25 ℃ is 90-120/10 mm, and the PI value is-1.5 to-0.5.
In the above technical solution, the SBS may be one or more of linear, star-shaped or hybrid SBS, preferably linear SBS.
In the above technical scheme, the stabilizer is sulfur powder, and may be sublimed sulfur, settled sulfur or refined sulfur.
In the above technical scheme, the SBS modified asphalt does not contain a compatibilizer, and the compatibilizer is an aromatic-rich compatibilizer (or called a compatibilizer), generally is an aromatic-rich distillate oil (the aromatic content is more than 50 wt%) and is especially an extract oil.
The second aspect of the present invention provides a method for preparing the above SBS modified asphalt, comprising:
(1) Adding a first pretreatment agent and a second pretreatment agent to the matrix asphalt to prepare blended asphalt;
(2) SBS and stabilizer are added into the blended asphalt to prepare SBS modified asphalt.
In the above technical solution, the step (1) is specifically as follows: heating matrix asphalt to 140-150 ℃, then adding a first pretreatment agent, stirring and mixing uniformly, then heating to 170-180 ℃, then adding a second pretreatment agent, and stirring and mixing for 0.5-1.0 hour to obtain blended asphalt.
In the above technical solution, the step (2) is specifically as follows: controlling the temperature of the blended asphalt to be 170-180 ℃, adding SBS, shearing or grinding for 0.5-1.0 hour, heating to 185-195 ℃, stirring for 0.5-1.0 hour, adding the stabilizer accounting for 1/3-1/2 of the total amount of the stabilizer, continuously stirring for 1.0-1.5 hours, adding the rest stabilizer, and continuously stirring for 2-5 hours to obtain the SBS modified asphalt.
Compared with the prior art, the invention has the following technical effects:
the inventor finds that the problem that the preparation of the SBS modified asphalt meeting the regulations by using the low-asphaltene residual oil can be fundamentally solved by only adopting a small amount of first pretreatment agent and second pretreatment agent to match and modify the matrix asphalt of low asphaltene and aromatic components and then matching with SBS and stabilizing agent introduced in a specific mode. The SBS modified asphalt prepared by the invention has good thermal storage stability, high-low temperature performance and road performance, and various indexes are superior to those of SBS modified asphalt in the technical requirement of polymer modified asphalt (JTG F40-2004).
Drawings
FIG. 1 is a photomicrograph (magnification of 200 times) of the SBS modified asphalt obtained in comparative example 1;
FIG. 2 is a photomicrograph (magnification of 200) of SBS modified asphalt obtained in comparative example 2;
FIG. 3 is a photomicrograph (200 Xmagnification) of the SBS modified asphalt obtained in example 1.
Detailed Description
The invention will be further illustrated by means of the following examples, which are not to be construed as limiting the invention. Wherein the percentage of the materials is mass percentage, and the modified asphalt product is taken as a reference.
In the invention, the asphalt adopts a four-component analysis method to obtain the contents of saturated components, aromatic components, colloid and asphaltene.
In the present invention, the molecular weights of the matrix asphalt and SBS are determined by vapor pressure permeation (VPO). Toluene was used as a solvent and the experimental temperature was 80 ℃.
In the present invention, the micrograph is taken using an Axioskop2 microscope manufactured by Zeiss, germany. Specifically, after the test is finished, a small amount of sample (about 0.1-0.5 g) is dipped and placed on a glass slide, and a cover slip is covered; then placing the sample on a heat table to slowly heat the sample (the temperature of the heat table is controlled to be about 100 ℃ above the softening point of the modified asphalt), and uniformly extruding the sample while heating until natural light can penetrate the sample by naked eyes.
Example 1 preparation of Mixed asphalt
According to the types and the amounts of the matrix asphalt and the pretreatment agent used in Table 2, blend asphalt-1 to blend asphalt-14 were prepared respectively, and the preparation process was as follows: heating the matrix asphalt to 145 ℃, then adding the first pretreatment agent, stirring and mixing uniformly, then heating to 175 ℃, then adding the second pretreatment agent, and stirring and mixing for 1.0 hour to obtain the blended asphalt. Wherein, the main properties of the matrix asphalt are shown in Table 1, and the types and the amounts of the matrix asphalt and the pretreatment agent used for each blend asphalt are shown in Table 2.
TABLE 1 Properties of the feedstock
| Item(s) | Matrix asphalt-1 | Matrix asphalt-2 | Analytical method (JTJ 052-2000) |
| Penetration (25 ℃), 0.1mm | 93 | 115 | T0604-2000 |
| PI value × | -0.762 | -1.4 | - |
| Softening point, DEG C | 45.8 | 43.5 | T0606-2000 |
| Ductility (10 ℃ C.), cm | ＞150 | ＞150 | T0605-1993 |
| Molecular weight (VPO) | 1121 | 1105 | - |
| Four component | T0618-1993 | ||
| Saturation fraction, percent | 31.53 | 31.60 | |
| Aromatic fraction, percent | 33.05 | 33.12 | |
| Gum,% of | 35.19 | 35.08 | |
| Asphaltenes, percent | 0.23 | 0.20 |
* And (3) injection: PI is obtained by measuring penetration under 3 or more temperature conditions such as 15deg.C, 25deg.C, 30deg.C, etc., and calculating according to a predetermined method (PI= (20-500A)/(1+50A)), wherein A is penetration temperature induction coefficient, and is obtained by linear regression, A= (lgP) T1 -lgP T2 ) T2 and T1 are any two temperature points, and the corresponding penetration is P T2 And P T1 。
From the four component contents of the matrix asphalt in Table 1, it can be preliminarily judged that the matrix asphalt has poor compatibility with SBS.
TABLE 2 types and amounts of matrix asphalt and pretreatment agent used for blended asphalt
| Item(s) | Matrix asphalt | Matrix asphalt, percent | First pretreatment agent species | A first pretreatment agent, percent | Second pretreatment agent species | A second pretreatment agent, percent |
| Blended asphalt-1 | Matrix asphalt-1 | 99.50 | Dodecylphenol | 0.50 | - | - |
| Blended asphalt-2 | Matrix asphalt-1 | 99.50 | - | - | Phosphoric acid | 0.50 |
| Blended asphalt-3 | Matrix asphalt-1 | 99.0 | Dodecylphenol | 0.50 | Phosphoric acid | 0.50 |
| Blended asphalt-4 | Matrix asphalt-1 | 99.50 | Dodecanol (dodecanol) | 0.20 | Phosphoric acid | 0.30 |
| Blended asphalt-5 | Matrix asphalt-1 | 99.0 | Dodecyl amine | 0.50 | Pyrophosphoric acid | 0.50 |
| Blended asphalt-6 | Matrix asphalt-2 | 99.50 | Dodecylphenol | 0.30 | Pyrophosphoric acid | 0.20 |
| Blended asphalt-7 | Matrix asphalt-2 | 99.25 | Polyethylene glycol 1000 | 0.25 | Metaphosphoric acid | 0.50 |
| Blended asphalt-8 | Matrix asphalt-1 | 99.40 | Polyethylene glycol 1500 | 0.30 | Metaphosphoric acid | 0.30 |
| Blended asphalt-9 | Matrix asphalt-2 | 99.50 | Glycol stearate | 0.25 | Polyphosphoric acid (P) 2 O 5 ≥83.3） | 0.25 |
| Blended asphalt-10 | Matrix asphalt-1 | 99.30 | Monoglyceride of stearic acid | 0.45 | Polyphosphoric acid (P) 2 O 5 ≥84.7） | 0.25 |
| Blended asphalt-11 | Matrix asphalt-2 | 99.50 | Pentaerythritol hard fatty acid ester | 0.20 | Phosphoric acid | 0.30 |
| Blended asphalt-12 | Matrix asphalt-1 | 99.0 | Sucrose oleate | 0.50 | Phosphoric acid | 0.50 |
| Blended asphalt-13 | Matrix asphalt-2 | 99.20 | Pentaerythritol stearate+dodecanol | 0.20/0.30 | Phosphoric acid | 0.30 |
| Blended asphalt-14 | Matrix asphalt-2 | 99.20 | Sucrose stearate | 0.30 | Phosphoric acid + pyrophosphoric acid | 0.30/0.20 |
EXAMPLES 2-5 preparation of SBS modified asphalt
The SBS modified asphalt is prepared from the blended asphalt-3 to the blended asphalt-5 respectively, and the process is as follows: and controlling the temperature of the blended asphalt at 175 ℃, adding SBS, shearing for 1.0 hour, heating to 190 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, continuously stirring for 5 hours, and obtaining the SBS modified asphalt. Wherein, the raw materials and the amount of the SBS modified asphalt of each example are shown in Table 3, and the properties of the SBS modified asphalt of each example are shown in Table 4.
Examples 6 to 10 preparation of SBS modified asphalt
The SBS modified asphalt is prepared from the blended asphalt-6 to the blended asphalt-10 respectively, and the process is as follows: and respectively controlling the temperature of the blended asphalt 6 and the blended asphalt-10 at 170 ℃, adding SBS, shearing for 0.75 hour, heating to 185 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, continuously stirring for 3.5 hours, and obtaining the SBS modified asphalt.
And respectively controlling the temperature of the blended asphalt-7, 8 and 9 at 175 ℃, adding SBS, shearing for 0.75 hour, heating to 190 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, continuously stirring for 4.0 hours, and obtaining the SBS modified asphalt.
Wherein, the raw materials and the amount of the SBS modified asphalt of each example are shown in Table 3, and the properties of the SBS modified asphalt of each example are shown in Table 5.
Examples 11 to 14 preparation of SBS modified asphalt
The SBS modified asphalt is prepared from the blended asphalt-11 to the blended asphalt-14 respectively, and the process is as follows: and respectively controlling the temperature of the blended asphalt-11 and 12 at 175 ℃, adding SBS, shearing for 1.0 hour, heating to 195 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, continuously stirring for 4.0 hours, and obtaining the SBS modified asphalt.
And respectively controlling the temperature of the blended asphalt-13 and the blended asphalt-14 at 175 ℃, adding SBS, shearing for 1.0 hour, heating to 185 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, continuously stirring for 4.0 hours, and obtaining the SBS modified asphalt.
Wherein, the raw materials and the amount of the SBS modified asphalt of each example are shown in Table 3, and the properties of the SBS modified asphalt of each example are shown in Table 6.
Comparative example 1
And (3) controlling the temperature of the matrix asphalt-1 at 175 ℃, adding SBS, shearing for 1.0 hour, heating to 190 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, and continuously stirring for 5 hours to obtain the SBS modified asphalt. Wherein, the raw materials and the amount are shown in Table 3, and the properties of the SBS modified asphalt are shown in Table 4.
Comparative example 2
And (3) controlling the temperature of the blended asphalt-1 at 175 ℃, adding SBS, shearing for 1.0 hour, heating to 190 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, and continuously stirring for 5 hours to obtain the SBS modified asphalt. Wherein, the raw materials and the amount are shown in Table 3, and the properties of the SBS modified asphalt are shown in Table 4.
Comparative example 3
And (3) controlling the temperature of the blended asphalt-2 at 175 ℃, adding SBS, shearing for 1.0 hour, heating to 190 ℃, stirring for 0.5 hour, adding 1/2 stabilizer, continuously stirring for 1.0 hour, adding the rest 1/2 stabilizer, and continuously stirring for 5 hours to obtain the SBS modified asphalt. Wherein, the raw materials and the amount are shown in Table 3, and the properties of the SBS modified asphalt are shown in Table 4.
Table 3 proportion of SBS modified asphalt of examples
| Polymer modified asphalt | Asphalt and content | SBS type and content | Stabilizer and content |
| Example 2 | Blend asphalt-3, 95.80% | YH-791，4.00% | Sublimating sulfur, 0.20% |
| Example 3 | Blended asphalt-4, 95.80% | YH-791H，4.00% | Sublimating sulfur, 0.20% |
| Example 4 | Blended asphalt-4, 95.80% | YH-791，4.00% | Sedimentation sulfur, 0.20% |
| Example 5 | Blended asphalt-5, 95.25% | YH-791，4.50% | Sublimating sulfur, 0.25% |
| Example 6 | Blended asphalt-6, 95.25% | YH-791，4.50% | Sublimating sulfur, 0.25% |
| Example 7 | Blend asphalt-7, 95.70% | YH-791，4.00% | Sedimentation sulfur, 0.30% |
| Example 8 | Blended asphalt-8, 95.75% | T6302，4.00% | Sublimating sulfur, 0.25% |
| Example 9 | Blended asphalt-9, 94.70% | T6302，5.00% | Sublimating sulfur, 0.30% |
| Example 10 | Blended asphalt-10, 95.80% | YH-791，4.00% | Sublimating sulfur, 0.20% |
| Example 11 | Blended asphalt-11, 95.80% | LG501，4.00% | Sublimating sulfur, 0.20% |
| Example 12 | Blended asphalt-12, 95.70% | LG501，4.00% | Sublimating sulfur, 0.30% |
| Example 13 | Blend asphalt-13, 95.80% | LG501，4.00% | Sublimating sulfur, 0.20% |
| Example 14 | Blended asphalt-14, 95.80% | LG501，4.00% | Sublimating sulfur, 0.20% |
| Comparative example 1 | Matrix asphalt-1, 95.25% | YH-791，4.50% | Sublimating sulfur, 0.25% |
| Comparative example 2 | Blended asphalt-1, 95.25% | YH-791，4.50% | Sublimating sulfur, 0.25% |
| Comparative example 3 | Blended asphalt-2, 95.25% | YH-791，4.50% | Sublimating sulfur, 0.25% |
TABLE 4 SBS modified asphalt Properties
| Item(s) | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Ⅰ-C |
| Penetration (25 ℃ C.)/0.1 mm | 65 | 70 | 65 | 68 | - | 67 | 65 | 60-80 |
| Penetration Index (PI) | 0.35 | 0.32 | 0.36 | 0.34 | -0.52 | 0.4 | ≮-0.4 | |
| Softening point/. Degree.C | 60 | 58 | 60 | 58 | - | 61 | 59 | ≮55 |
| Elongation (5 ℃ C.)/cm | 38 | 40 | 38 | 40 | - | 45 | 33 | ≮30 |
| Elastic recovery (25 ℃), percent | 94 | 94 | 97 | 94 | - | 92 | 93 | ≮65 |
| Isolation of storage stability (163 ℃ C., 48 h) soft Point difference/. Degree.C | 0.3 | 0.2 | 0.3 | 0.1 | - | 5.6 | 6.0 | ≯2.5 |
| Film oven test (163 ℃,5 h) | ||||||||
| Penetration ratio,% | 79 | 77 | 80 | 78 | - | 77 | 78 | ≮60 |
| Ductility (5 ℃ C.)/cm | 28 | 28 | 27 | 28 | - | 32 | 16 | ≮20 |
| Remarks | Microscopic observation shows homogeneous phase System of | Microscopic observation shows homogeneous phase System of | Microscopic observation shows homogeneous phase System of | Microscopic observation shows homogeneous phase System of | SBS and asphalt generation Separation | Storage stability is not good Qualified product | Storage stability Failure to pass | |
| Meets the index | Meets the requirements of I-C | Meets the requirements of I-C | Meets the requirements of I-C | Meets the requirements of I-C | Does not satisfy I-C | Does not satisfy I-C |
TABLE 5 SBS modified asphalt Properties
| Item(s) | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 | Ⅰ-C | Ⅰ-B |
| Penetration (25 ℃ C.)/0.1 mm | 88 | 75 | 71 | 65 | 92 | 60-80 | 80-100 |
| Penetration Index (PI) | -0.1 | -0.15 | -0.1 | 0.35 | -0.2 | ≮-0.4 | ≮-0.8 |
| Softening point/. Degree.C | 55 | 58 | 58 | 60 | 54 | ≮55 | ≮50 |
| Elongation (5 ℃ C.)/cm | 55 | 45 | 41 | 39 | 58 | ≮30 | ≮40 |
| Elastic recovery (25 ℃), percent | 93 | 92 | 94 | 90 | 92 | ≮65 | ≮60 |
| Storage stabilityIsolation (163 ℃,48 h) softening point difference +. ℃ | 0.3 | 0.2 | 0.1 | 0.1 | 0.2 | ≯2.5 | ≯2.5 |
| Film oven test (163 ℃,5 h) | |||||||
| Penetration ratio,% | 75 | 78 | 77 | 78 | 74 | ≮60 | ≮55 |
| Ductility (5 ℃ C.)/cm | 30 | 28 | 27 | 28 | 32 | ≮20 | ≮25 |
| Remarks | Microscopic examination of the homogeneous phase Is tied up with | Microscopic examination of the homogeneous phase Is tied up with | Microscopic examination of the homogeneous phase Is tied up with | Microscopic examination of the homogeneous phase Is tied up with | Microscopic observation shows homogeneous phase System of | ||
| Satisfy I-B | Satisfy I-B | Meets the requirements of I-C | Meets the requirements of I-C | Meets the requirements of I-C | Satisfy I-B |
TABLE 6 SBS modified asphalt Properties
| Item(s) | Example 11 | Example 12 | Example 13 | Example 14 | Ⅰ-C | Ⅰ-B | Analytical method (JTJ 052-2000) |
| Penetration (25 ℃ C.)/0.1 mm | 66 | 68 | 90 | 91 | 60-80 | 80-100 | T0604-2000 |
| Penetration Index (PI) | 0.34 | 0.28 | -0.22 | -0.21 | ≮-0.4 | ≮-0.8 | - |
| Softening point/. Degree.C | 59 | 59 | 54 | 54 | ≮55 | ≮50 | T0606-2000 |
| Elongation (5 ℃ C.)/cm | 37 | 38 | 57 | 56 | ≮30 | ≮40 | T0605-1993 |
| Elastic recovery (25 ℃), percent | 93 | 94 | 92 | 925 | ≮65 | ≮60 | T0662-2000 |
| Isolation of the storage stability (163 c, 48h) Softening point difference/. Degree.C | 0.1 | 0.1 | 0.2 | 0.1 | ≯2.5 | ≯2.5 | T0661-2000 |
| Film oven test (163 ℃,5 h) | T0609-1993 | ||||||
| Penetration ratio,% | 79 | 79 | 78 | 79 | ≮60 | ≮55 | T0604-2000 |
| Ductility (5 ℃ C.)/cm | 29 | 28 | 28 | 28 | ≮20 | ≮25 | T0605-1993 |
| Remarks | Microscopic observation shows homogeneous phase System of | Microscopic examination of the homogeneous phase Is tied up with | Microscopic examination of the homogeneous phase Is tied up with | Microscopic examination of the homogeneous phase Is tied up with | |||
| Satisfy I-B | Meets the requirements of I-C | Meets the requirements of I-C | Satisfy I-B | Satisfy I-B |
As can be seen from the performances in tables 4 to 6, the segregation softening point difference of the SBS modified asphalt prepared by the invention is almost 0 ℃, the thermal storage stability is good, and other performances are better than the technical index requirements of the SBS modified asphalt. From the micrograph of the SBS modified asphalt obtained in example 2 (FIG. 3), it is seen that the SBS is very uniformly dispersed in the asphalt, as a homogeneous system. In contrast, the microphotographs of the SBS modified asphalt obtained in comparative example 2 and comparative example 1 are shown in FIGS. 1 and 2, respectively, and the problem of instability is remarkable.
In addition, because the asphaltene content in the matrix asphalt is low, the temperature sensitivity is poor (namely, the PI value is lower), so that certain difficulty exists in the aspect of preparing the SBS modified asphalt temperature sensitivity (PI value) by adopting the raw material. The first pretreatment agent is adopted independently to improve the storage stability of SBS modified asphalt, but the problem of disqualification of PI value still exists. By adopting the preparation method provided by the invention, the two pretreatment agents are compounded, so that various indexes of the SBS modified asphalt can meet and are superior to technical index requirements of the SBS modified asphalt.
Claims (13)
1. The SBS modified asphalt comprises the following components in percentage by mass:
blending 93.7% -95.8% of asphalt;
SBS 4.0%～6.0%；
0.2 to 0.3 percent of stabilizer;
the blended asphalt comprises the following components in percentage by mass:
99.0 to 99.6 percent of matrix asphalt;
0.2 to 0.5 percent of first pretreatment agent;
0.2 to 0.5 percent of second pretreatment agent;
the matrix asphalt has asphaltene content of no more than 1wt% and aromatic content of no more than 35wt%;
the first pretreatment agent is at least one of dodecyl alcohol, dodecyl amine, dodecyl phenol, polyethylene glycol, fatty acid glycol ester, fatty acid monoglyceride, pentaerythritol fatty acid ester and sucrose fatty acid ester; wherein the fatty acid is selected from at least one of C10-C18 fatty acids; the molecular weight of the polyethylene glycol is 800-2000;
the second pretreatment agent is at least one of phosphoric acid, pyrophosphoric acid, metaphosphoric acid and polyphosphoric acid; wherein P in polyphosphoric acid 2 O 5 The mass content is more than 80%.
2. The SBS modified asphalt according to claim 1, characterized in that: in the first pretreatment agent, the fatty acid is at least one selected from stearic acid and lauric acid.
3. The SBS modified asphalt according to claim 1, characterized in that: the first pretreatment agent is dodecylphenol.
4. The SBS modified asphalt according to claim 1, characterized in that: the second pretreatment agent is polyphosphoric acid, wherein P in the polyphosphoric acid 2 O 5 The mass content is above 83%.
5. The SBS modified asphalt according to claim 1, characterized in that: the matrix asphalt is naphthenic thick oil asphalt.
6. The SBS modified asphalt according to claim 1, characterized in that: in the matrix asphalt, the H/C atomic ratio is more than 1.5, and the molecular weight is 1000 g.mol -1 The above.
7. SBS modified asphalt according to any one of claims 1 to 5, characterized in that: the normal pressure boiling point of the matrix asphalt is more than 350 ℃, the penetration degree at 25 ℃ is 90-120/10 mm, and the PI value is-1.5 to-0.5.
8. The SBS modified asphalt according to claim 1, characterized in that: the SBS is linear SBS.
9. The SBS modified asphalt according to claim 1, characterized in that: the stabilizer is sulfur powder.
10. The SBS modified asphalt according to claim 1, characterized in that: the SBS modified asphalt does not contain a compatibilizer rich in aromatic hydrocarbon.
11. A process for the preparation of the SBS modified asphalt according to any one of claims 1 to 10, comprising:
(1) Adding a first pretreatment agent and a second pretreatment agent to the matrix asphalt to prepare blended asphalt;
(2) SBS and stabilizer are added into the blended asphalt to prepare SBS modified asphalt.
12. The method for preparing SBS modified asphalt according to claim 11, wherein: the step (1) is specifically as follows: heating matrix asphalt to 140-150 ℃, then adding a first pretreatment agent, stirring and mixing uniformly, then heating to 170-180 ℃, then adding a second pretreatment agent, and stirring and mixing for 0.5-1.0 hour to obtain blended asphalt.
13. The method for preparing SBS modified asphalt according to claim 11, wherein: the step (2) is specifically as follows: controlling the temperature of the blended asphalt to be 170-180 ℃, adding SBS, shearing or grinding for 0.5-1.0 hour, heating to 185-195 ℃, stirring for 0.5-1.0 hour, adding the stabilizer accounting for 1/3-1/2 of the total amount of the stabilizer, continuously stirring for 1.0-1.5 hours, adding the rest stabilizer, and continuously stirring for 2-5 hours to obtain the SBS modified asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952219.7A CN114163829B (en) | 2020-09-11 | 2020-09-11 | SBS modified asphalt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952219.7A CN114163829B (en) | 2020-09-11 | 2020-09-11 | SBS modified asphalt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114163829A CN114163829A (en) | 2022-03-11 |
| CN114163829B true CN114163829B (en) | 2023-07-04 |
Family
ID=80475973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010952219.7A Active CN114163829B (en) | 2020-09-11 | 2020-09-11 | SBS modified asphalt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114163829B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393811A (en) * | 1991-05-31 | 1995-02-28 | Exxon Research And Engineering Company | Composition and method for improving the storage stability of polymer modified asphalts |
| CN102040848A (en) * | 2010-12-27 | 2011-05-04 | 路翔股份有限公司 | SBS modified asphalt prepared from low aromatics content petroleum asphalt and preparation method thereof |
| CN103044932A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for preparing modified asphalt by adopting raw material with low asphaltene content |
| CN106592385A (en) * | 2016-12-15 | 2017-04-26 | 佛山高富中石油燃料沥青有限责任公司 | Equipment for producing SBS modified asphalt through Venezuela heavy cycloalkyl crude oil straight-run pitch and technology thereof |
| CN110872446A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | Modified road asphalt and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2819818B1 (en) * | 2001-01-22 | 2003-04-25 | Atofina | MODIFIED BITUMEN COMPOSITIONS |
| JP4597430B2 (en) * | 2001-07-05 | 2010-12-15 | 花王株式会社 | Modified asphalt composition for road pavement |
| CN103450693B (en) * | 2013-09-18 | 2016-05-25 | 交通运输部公路科学研究所 | Composite modified coal tar pitch and preparation method thereof |
| CN105585736B (en) * | 2014-10-22 | 2018-02-09 | 中国石油化工股份有限公司 | A kind of road asphalt modifier and preparation method thereof |
| FR3061191B1 (en) * | 2016-12-22 | 2019-05-24 | Total Marketing Services | COLOR ASPHALT COMPOSITION FOR REALIZING COATINGS |
| CN110218463B (en) * | 2019-07-16 | 2021-09-21 | 黄河三角洲京博化工研究院有限公司 | Modified asphalt and preparation method thereof |
-
2020
- 2020-09-11 CN CN202010952219.7A patent/CN114163829B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393811A (en) * | 1991-05-31 | 1995-02-28 | Exxon Research And Engineering Company | Composition and method for improving the storage stability of polymer modified asphalts |
| CN102040848A (en) * | 2010-12-27 | 2011-05-04 | 路翔股份有限公司 | SBS modified asphalt prepared from low aromatics content petroleum asphalt and preparation method thereof |
| CN103044932A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for preparing modified asphalt by adopting raw material with low asphaltene content |
| CN106592385A (en) * | 2016-12-15 | 2017-04-26 | 佛山高富中石油燃料沥青有限责任公司 | Equipment for producing SBS modified asphalt through Venezuela heavy cycloalkyl crude oil straight-run pitch and technology thereof |
| CN110872446A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | Modified road asphalt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114163829A (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2103811C (en) | Rubber processing oil and rubber products containing it | |
| DE69628553T2 (en) | ACID-CONTAINED POLYMER-MODIFIED ASPHALT COMPOSITIONS AND THEIR PRODUCTION | |
| EP1235768B1 (en) | Hydrocarbonaceous composition containing odor suppressant | |
| CN103194072A (en) | Complex modified asphalt composition and preparation method thereof | |
| EP2350200B1 (en) | Bituminous mixtures with a high polymer content | |
| Liu et al. | Investigation of physiochemical and rheological properties of waste cooking oil/SBS/EVA composite modified petroleum asphalt | |
| CN109535747B (en) | No. 30 hard road asphalt and preparation method thereof | |
| CN114163829B (en) | SBS modified asphalt and preparation method thereof | |
| EP0227238A1 (en) | Asphaltic composition | |
| US4283231A (en) | Sulfur-treated propane-precipitated asphalt | |
| US9422407B2 (en) | Process of polymer modified asphalt preparation | |
| CN110003673B (en) | Styrene-butadiene-styrene block copolymer composite modified asphalt and preparation method thereof | |
| CN110872446A (en) | Modified road asphalt and preparation method thereof | |
| EP0718372B1 (en) | Process for the preparation of stable mixtures of bitumen and polymer | |
| US4283230A (en) | Air-treated propane-precipitated asphalt | |
| US4064082A (en) | Asphaltic composition and its manufacture | |
| CN111378465B (en) | Matrix asphalt, modified asphalt and preparation method | |
| US3476679A (en) | Asphalt blends of hydrocarbon precipitated asphalts with hydrocarbon aromatic extracts | |
| US2204967A (en) | Process for lowering the pour points of mineral oils | |
| CN102533303A (en) | Method for preparing coal tar pitch having improved compatibility with asphalt and asphalt containing the same | |
| CN109207182A (en) | A kind of method of deasphalted oil production road asphalt | |
| CN114163828B (en) | Matrix asphalt for waterproof coiled material and preparation method thereof | |
| CN112442279B (en) | Road asphalt and preparation thereof | |
| US4904305A (en) | Novel asphaltic composition | |
| CN111087828B (en) | Sasobit warm mix asphalt and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231201 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
|
| TR01 | Transfer of patent right |