CN103073902A - Polymer-modified asphalt and preparation method thereof - Google Patents
Polymer-modified asphalt and preparation method thereof Download PDFInfo
- Publication number
- CN103073902A CN103073902A CN2013100205469A CN201310020546A CN103073902A CN 103073902 A CN103073902 A CN 103073902A CN 2013100205469 A CN2013100205469 A CN 2013100205469A CN 201310020546 A CN201310020546 A CN 201310020546A CN 103073902 A CN103073902 A CN 103073902A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- cyclopentadienyl
- polymer
- butyl
- titanium
- 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.)
- Granted
Links
Abstract
The invention discloses polymer-modified asphalt and a preparation method thereof. The polymer-modified asphalt is prepared from the following components in part by mass: 85-97 parts of base asphalt, 1-10 parts of polymer and 0.1-1.5 parts of auxiliary agents. The preparation method of the polymer-modified asphalt comprises the following steps: (1) mixing the base asphalt and the polymer so as to disperse the polymer into the asphalt to obtain an asphalt-polymer mixture; and (2) adding the auxiliary agent into the asphalt-polymer mixture, and performing cross-linking reaction to obtain the polymer-modified asphalt. The used auxiliary agents are composite auxiliary agents playing different roles during asphalt preparation; and thiophene sulfide as a structural sulfur is vulcanized, and compared with vulcanization of elemental sulfur, due to absence of free sulfur, heat resistance, aging resistance and tensile property of the polymer-modified asphalt are improved.
Description
Technical field
The present invention relates to a kind of polymer modified asphalt and preparation method thereof.
Background technology
Along with the widespread use of modifying asphalt, also more and more higher to the requirement of modifying asphalt, be mainly reflected in and require modifying asphalt to have good stability in storage, higher softening temperature and low-temperature ductility preferably.
Adopt common SBS to prepare modifying asphalt, generally need higher incorporation when reaching than high softening-point, could satisfy simultaneously the requirement of low-temperature ductility; If use higher sulfur consumption, although can improve softening temperature when reducing the SBS consumption, low-temperature ductility is not up to standard, and 135 ℃ viscosity may be excessive simultaneously.Adopt in addition low-molecular-weight SBS to prepare modifying asphalt, its low-temperature ductility is often just up to standard, if propose to be higher than the requirement of standard in the engineering, then can not reach requirement in actual production.In addition, higher SBS volume can increase the production cost of pitch, and the simultaneously increase of SBS output also can make the storage stability of pitch reduce.
US4145322 discloses a kind of method of the SBS of preparation modifying asphalt, and heated asphalt adds the low-molecular-weight SBS of 2-20% to 130-230 ℃, and as linking agent, the shortcoming of this technology is that SBS and pitch are difficult to mix with sulphur.
US5371121 discloses a kind of method of the SBS of preparation modifying asphalt, only adds the sulphur of 0.015-0.075%, and this method is because the output of sulphur is too low, and used SBS output is too high, and the storage stability of SBS modifying asphalt is bad.
USP6133351 discloses a kind of employing sulphur or diaryl disulphide is stablizer, has prepared a kind of modifying asphalt, and in this course, the control of level of response is main influence factor.Easily cause over cure to form the problem such as colloid and can't continue operation, and the long production cost that increases of reaction times.And WO9958600 adopts the method for metal oxide or mineral acid, and WO0023533 adopts the problem of the method solution storage stability that adds the polyolefins compound, but effect is undesirable.
CN1239801A adopts that to contain high in aromatics be that by-product is done compatilizer and made polymkeric substance and pitch well be fused into homogeneous system, add linking agent and make pitch-reaction promoter-polymkeric substance generation chemical reaction, improve the polymkeric substance stability compatible with pitch, these reaction promoters are organic peroxy compound, metal oxide, resin, sulfide, sulphur and vulcanization accelerator etc.
The used linking agent of CN1765997A is poly-sulfur vulcanization thing or Organo-Titanate Chelates.When linking agent used poly-sulfur vulcanization thing, promotor used the sulfenic acid aminated compounds to cooperate with it, and when linking agent used Organo-Titanate Chelates, promotor used thiurams/morpholine kind compound to cooperate with it.
Existing technology all is to adopt sulfocompound as linking agent, with viscid bitumen crosslinked be gilsonite, but owing to used linking agent cross-linking effect is limited, can not the larger viscid bitumen of effective crosslinked penetration degree.
Summary of the invention
The purpose of this invention is to provide a kind of polymer modified asphalt and preparation method thereof, the storage stability of polymer modified asphalt provided by the present invention is good, the modifying asphalt softening temperature is higher than 65 ℃, and 5 ℃ of ductilities are greater than 55cm, and preparation method's provided by the present invention technique is simple, easy to operate.
A kind of polymer modified asphalt provided by the present invention, made by the component of following quality proportioning:
Basic asphalt 85～97;
Polymkeric substance 1～10; With
Auxiliary agent 0.1～1.5.
Above-mentioned polymer modified asphalt, the mass ratio of described basic asphalt, described polymkeric substance and described auxiliary agent specifically can be (93.8～96.5): (3～5.5): (0.3～1.0), 96.5:3.0:0.5,95:4.5:0.5,94.2:5.5:0.3,94.5:4.5:1.0 or 93.8:5.5:0.7.
Above-mentioned polymer modified asphalt, described basic asphalt can be residual oil, straight-run pitch, de-oiled asphalt, mediation pitch and subtracts in the four line wax oils at least a, wherein said de-oiled asphalt can be the de-oiled asphalt that solvent de-asphalting process obtains, and described mediation pitch can be the mediation pitch that Blending obtains;
The penetration degree of described basic asphalt under 25 ℃ is 300～4001/10mm.
Above-mentioned polymer modified asphalt, described polymkeric substance can be the thermoplastic elastomer that contains the conjugated diolefine hydrocarbon structure and the mixture of segmented copolymer, describedly contain the thermoplastic elastomer of conjugated diolefine hydrocarbon structure and the mass ratio of described segmented copolymer is 1～10:1～10, specifically can be (5～8): 1,5:1,8:1 or 10:1.
Above-mentioned polymer modified asphalt, the described thermoplastic elastomer that contains the conjugated diolefine hydrocarbon structure is styrene-butadiene-styrene block copolymer (SBS) or styrene isoprene styrene block copolymer (SIS) (SIS), its molecular weight can be 100,000.
Above-mentioned polymer modified asphalt, described segmented copolymer can be (EO)
100(PO)
70(EO)
100(F127), at least a in polyoxyethylene-poly-oxypropylene polyoxyethylene segmented copolymer (PEO-PPO-PEO), Pluronic L121 and the polyoxypropylene-polyox-yethylene-polyoxypropylene block copolymer, its molecular weight can be 100,000.
Above-mentioned polymer modified asphalt, described auxiliary agent can be the mixture of linking agent and promotor;
In the described mixture, the quality percentage composition of described linking agent can be 40～100%, specifically can be 50～70%, 50%, 60% or 70%, and surplus is described promotor;
Described linking agent is thiophene-type sulfide, and described promotor can be amides.
Above-mentioned polymer modified asphalt, described thiophene-type sulfide can be thiophene, Polythiophene, dibenzothiophene, thionaphthene, 4-MDBT or 4,6-dimethyl Dibenzothiophene;
Described amides can be N-2-(3-methoxyl group-4-propargyl oxygen) phenylacetamide, N-(2-pyrimidyl) benzamide, N-arylacetamide, 4, the fragrant thiacetamides of 6-dimethoxypyridin, N-substituted aryl tetrahydrochysene benzamide or β-carbonyl acid amides.
Above-mentioned polymer modified asphalt, when described auxiliary agent only was chosen as linking agent, described linking agent was metallocene-titanium metal compound or luxuriant Zr metal compound;
Described metallocene-titanium metal compound can be the luxuriant titanium of phenylbenzene hexichol, two pairs of phenyl two luxuriant titaniums, two tolyl two luxuriant titaniums, two methyl cyclopentadienyl phenylbenzene titaniums, 1-ethyl-2,3,4,5-tetramethyl-ring pentadienyl three titanium isopropylates, tetramethyl-ring pentadienyl three titanium isopropylates, the cyclopentadienyl titanous chloride, cyclopentadienyl (2,6-di-t-butyl-4-methylphenoxy) titanium dichloride, cyclopentadienyl (2-di-t-butyl-4-methoxyphenoxy) titanium dichloride, cyclopentadienyl (2,4,6-tri-butyl-phenoxy) titanium dichloride or cyclopentadienyl (2-di-t-butyl phenoxy group) titanium dichloride;
Described luxuriant Zr metal compound can be 1-ethyl-2,3,4,5-tetramethyl-ring pentadienyl three zirconium iso-propoxides, tetramethyl-ring pentadienyl three zirconium iso-propoxides, cyclopentadienyl tri-chlorination zirconium, cyclopentadienyl (2,6-di-t-butyl-4-methylphenoxy) zirconium dichloride, cyclopentadienyl (2-di-t-butyl-4-methoxyphenoxy) zirconium dichloride, cyclopentadienyl (2,4,6-tri-butyl-phenoxy) zirconium dichloride or cyclopentadienyl (2-di-t-butyl phenoxy group) zirconium dichloride.
The present invention also provides the preparation method of above-mentioned polymer modified asphalt, comprises the steps:
(1) with described basic asphalt and described mixed with polymers, make described polymer dispersed in described pitch, obtain the asphalt-polymer mixture;
(2) described auxiliary agent is added in the described asphalt-polymer mixture, namely obtains described polymer modified asphalt through crosslinking reaction.
Among the above-mentioned preparation method, in the step (1), the temperature of described mixing can be 110-230 ℃, specifically can be 110-170 ℃, 110-180 ℃, 110 ℃, 170 ℃, 180 ℃ or 230 ℃, time can be 10～60min, specifically can be 10min, 20min or 60min; And/or,
In the step (2), the temperature of described crosslinking reaction can be 160～260 ℃, specifically can be 180～260 ℃, 160 ℃, 180 ℃ or 260 ℃, and the time can be 10～400min, specifically can be 50～60min, 50min or 60min.
For improving the storage stability of modifying asphalt, the auxiliary agent that the present invention adopts is to play the not compound auxiliary agent of same-action in the pitch preparation process, wherein thiophene-type sulfide is the structure sulfur vulcanization, compare with the elemental sulfur sulfuration, because do not have the existence of free sulphur, heat-resisting, ageing-resistant, the tensile property of its product all increase; But its sulfuration is stronger, causes easily overvulcanize, the present invention to adopt amides to be used with it, just the problems referred to above can not occur.When linking agent adopts metallocene-titanium metal compound, can obtain preferably asphaltic products. of storage stability.Because classes of compounds role in reaction emphasizes particularly on different fields, make polymkeric substance well compatible with basic asphalt, and the quick and stable crosslinking reaction of carrying out, products obtained therefrom has satisfactory stability.
Embodiment
Employed experimental technique is ordinary method if no special instructions among the following embodiment.
Used material, reagent etc. if no special instructions, all can obtain from commercial channels among the following embodiment.
The used Polymer SBS of the following embodiment of the present invention is the YH-791 type of general petrochemical works, Yueyang, and SIS is styrene isoprene styrene block copolymer (SIS), and molecular weight is 100,000; Used PEO-PPO-PEO(P123 is the product produced of Aldrich company (cat. no: 435465, molecular weight is 100,000); Used (EO)
100(PO)
70(EO)
100(F127) available from Aldrich company.
The mensuration of the penetration degree among the following embodiment adopts the T0604 method to measure, and the mensuration of softening temperature adopts the T0606 method to measure, and the segregation experiment adopts the method for T0661 to measure.
Embodiment 1, preparation polymer modified asphalt
Be 3491/10mm with 25 ℃ of penetration degrees, softening temperature is 29 ℃ basic asphalt (CNOOC's residual oil with subtract four line wax oils mix) (account for total amount quality 96.5%), be heated to 170 ℃ to molten state, SBS with 2.5% and 0.5% P123 are added in the basic asphalt, adopt high-speed shearing machine (rotating speed 10000r/min) to mix 20min; Add afterwards 0.5% reaction promoter, finish behind 180 ℃ of lower hybrid reaction 60min, obtain modifying asphalt, its physico-chemical property is as shown in table 1.
In the present embodiment, the consisting of of the reaction promoter that adopts: 60% thiophene and 40% N-2-(3-methoxyl group-4-propargyl oxygen) phenylacetamide is mass percent.
Embodiment 2, preparation polymer modified asphalt
Be 3391/10mm with 25 ℃ of penetration degrees, softening temperature is 31 ℃ basic asphalt (CNOOC's residual oil with subtract four line wax oils mix) (account for total amount quality 95%), be heated to 180 ℃ to molten state, SBS with 4% and 0.5% P123 are added in the basic asphalt, adopt high-speed shearing machine (rotating speed 10000r/min) to mix 20min; Add afterwards 0.5% reaction promoter, finish behind 180 ℃ of lower hybrid reaction 60min, obtain modifying asphalt, its physico-chemical property is as shown in table 1.
In the present embodiment, the reaction promoter that adopts is phenylbenzene two luxuriant titaniums.
Embodiment 3, preparation polymer modified asphalt
Be 3141/10mm with 25 ℃ of penetration degrees, softening temperature is 39 ℃ basic asphalt (CNOOC's residual oil with subtract four line wax oils mix) (account for total amount quality 94.2%), be heated to 110 ℃ to molten state, SBS with 5% and 0.5% F127 are added in the basic asphalt, adopt high-speed shearing machine (rotating speed 10000r/min) to mix 60min, add afterwards 0.3% reaction promoter, behind 160 ℃ of lower hybrid reaction 50min, finish, obtain modifying asphalt, its physico-chemical property is as shown in table 1.
In the present embodiment, the consisting of of the reaction promoter that adopts: 50% 4-MDBT and 50% N-substituted aryl tetrahydrochysene benzamide are mass percent.
Embodiment 4, preparation polymer modified asphalt
Be 3541/10mm with 25 ℃ of penetration degrees, softening temperature is 28 ℃ basic asphalt (CNOOC's residual oil with subtract four line wax oils mix) (account for total amount 94.5%), be heated to 230 ℃ to molten state, SIS with 4% and 0.5% P123 are added in the basic asphalt, adopt high-speed shearing machine (rotating speed 10000r/min) to mix 10min, add afterwards 1.0% reaction promoter, behind 260 ℃ of lower hybrid reaction 60min, finish, obtain modifying asphalt, its physico-chemical property is as shown in table 1.
In the present embodiment, the consisting of of the reaction promoter that adopts: 70% dibenzothiophene and 30% N-(2-pyrimidyl) benzamide is mass percent.
Embodiment 5, preparation polymer modified asphalt
Be 3651/10mm with 25 ℃ of penetration degrees, softening temperature is 27 ℃ basic asphalt (CNOOC's residual oil with subtract four line wax oils mix) (account for total amount quality 93.8%), be heated to 180 ℃ to molten state, SBS with 5% and 0.5% F127 are added in the basic asphalt, adopt high-speed shearing machine (rotating speed 10000r/min) to mix 20min, add afterwards 0.7% reaction promoter, behind 180 ℃ of lower hybrid reaction 60min, finish, obtain modifying asphalt, its physico-chemical property is as shown in table 1.
In the present embodiment, the reaction promoter that adopts is two methyl cyclopentadienyl phenylbenzene titaniums.
The character of table 1 embodiment medium pitch product
Table 2SBS class Technical Requirement of Modified Asphalt (JTG F40-2004)
Table 2 is the technical requirements of SBS class modifying asphalt, the data in contrast table 1 and the table 2 as can be known, the asphaltic products. of this invention preparation meets the requirement of the C level pitch of GB regulation.
Claims (10)
1. polymer modified asphalt, it is characterized in that: described modifying asphalt is made by the component of following quality proportioning:
Basic asphalt 85～97;
Polymkeric substance 1～10;
Auxiliary agent 0.1～1.5.
2. modifying asphalt according to claim 1, it is characterized in that: described basic asphalt is residual oil, straight-run pitch, de-oiled asphalt, mediation pitch and subtracts in the four line wax oils at least a;
The penetration degree of described basic asphalt under 25 ℃ is 300～400 1/10mm.
3. modifying asphalt according to claim 1 and 2, it is characterized in that: described polymkeric substance is to contain the thermoplastic elastomer of conjugated diolefine hydrocarbon structure and the mixture of segmented copolymer.
4. modifying asphalt according to claim 3, it is characterized in that: the described thermoplastic elastomer that contains the conjugated diolefine hydrocarbon structure is styrene-butadiene-styrene or styrene-isoprene-styrene copolymer-.
5. it is characterized in that according to claim 3 or 4 described modifying asphalts: described segmented copolymer is (EO)
100(PO)
70(EO)
100, at least a in polyoxyethylene-poly-oxypropylene polyoxyethylene segmented copolymer, Pluronic L121 and the polyoxypropylene-polyox-yethylene-polyoxypropylene block copolymer.
6. each described modifying asphalt according to claim 1-5 is characterized in that: described auxiliary agent is the mixture of linking agent and promotor;
In the described mixture, the quality percentage composition of described linking agent is 40～100%, and surplus is described promotor;
Described linking agent is thiophene-type sulfide, and described promotor is amides.
7. modifying asphalt according to claim 6, it is characterized in that: described thiophene-type sulfide is thiophene, Polythiophene, dibenzothiophene, thionaphthene, 4-MDBT or 4,6-dimethyl Dibenzothiophene;
Described amides is N-2-(3-methoxyl group-4-propargyl oxygen) phenylacetamide, N-(2-pyrimidyl) benzamide, N-arylacetamide, 4, the fragrant thiacetamides of 6-dimethoxypyridin, N-substituted aryl tetrahydrochysene benzamide or β-carbonyl acid amides.
8. each described modifying asphalt according to claim 1-5 is characterized in that: described auxiliary agent is linking agent, and described linking agent is metallocene-titanium metal compound or luxuriant Zr metal compound;
Described metallocene-titanium metal compound is the luxuriant titanium of phenylbenzene hexichol, two pairs of phenyl two luxuriant titaniums, two tolyl two luxuriant titaniums, two methyl cyclopentadienyl phenylbenzene titaniums, 1-ethyl-2,3,4,5-tetramethyl-ring pentadienyl three titanium isopropylates, tetramethyl-ring pentadienyl three titanium isopropylates, the cyclopentadienyl titanous chloride, cyclopentadienyl (2,6-di-t-butyl-4-methylphenoxy) titanium dichloride, cyclopentadienyl (2-di-t-butyl-4-methoxyphenoxy) titanium dichloride, cyclopentadienyl (2,4,6-tri-butyl-phenoxy) titanium dichloride or cyclopentadienyl (2-di-t-butyl phenoxy group) titanium dichloride;
Described luxuriant Zr metal compound is 1-ethyl-2,3,4,5-tetramethyl-ring pentadienyl three zirconium iso-propoxides, tetramethyl-ring pentadienyl three zirconium iso-propoxides, cyclopentadienyl tri-chlorination zirconium, cyclopentadienyl (2,6-di-t-butyl-4-methylphenoxy) zirconium dichloride, cyclopentadienyl (2-di-t-butyl-4-methoxyphenoxy) zirconium dichloride, cyclopentadienyl (2,4,6-tri-butyl-phenoxy) zirconium dichloride or cyclopentadienyl (2-di-t-butyl phenoxy group) zirconium dichloride.
9. each described modifying asphalt according to claim 1-5, it is characterized in that: described modifying asphalt is prepared by method claimed in claim 10.
10. the preparation method of each described polymer modified asphalt among the claim 1-9 comprises the steps:
(1) with described basic asphalt and described mixed with polymers, make described polymer dispersed in described pitch, obtain the asphalt-polymer mixture;
(2) described auxiliary agent is added in the described asphalt-polymer mixture, namely obtains described polymer modified asphalt through crosslinking reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020546.9A CN103073902B (en) | 2013-01-21 | 2013-01-21 | Polymer-modified asphalt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020546.9A CN103073902B (en) | 2013-01-21 | 2013-01-21 | Polymer-modified asphalt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103073902A true CN103073902A (en) | 2013-05-01 |
| CN103073902B CN103073902B (en) | 2015-01-28 |
Family
ID=48150606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310020546.9A Active CN103073902B (en) | 2013-01-21 | 2013-01-21 | Polymer-modified asphalt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103073902B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936927A (en) * | 2014-04-25 | 2014-07-23 | 交通运输部公路科学研究所 | Reactive type asphalt mixture additive, as well as mixture, preparation method and applications thereof |
| CN112110680A (en) * | 2020-09-14 | 2020-12-22 | 山东高速交通建设集团股份有限公司 | Asphalt reducing agent, cold-mixed pavement finish coat material and finish coat paving method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1649965A (en) * | 2002-04-24 | 2005-08-03 | 旭化成化学株式会社 | Asphalt composition |
| CN1765997A (en) * | 2004-10-29 | 2006-05-03 | 中国石油化工股份有限公司 | Polymer modified asphalt with storage stability and its preparation method |
-
2013
- 2013-01-21 CN CN201310020546.9A patent/CN103073902B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1649965A (en) * | 2002-04-24 | 2005-08-03 | 旭化成化学株式会社 | Asphalt composition |
| CN1765997A (en) * | 2004-10-29 | 2006-05-03 | 中国石油化工股份有限公司 | Polymer modified asphalt with storage stability and its preparation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936927A (en) * | 2014-04-25 | 2014-07-23 | 交通运输部公路科学研究所 | Reactive type asphalt mixture additive, as well as mixture, preparation method and applications thereof |
| CN103936927B (en) * | 2014-04-25 | 2016-09-28 | 交通运输部公路科学研究所 | Response type asphalt mixture additive and compound, its preparation method and application |
| CN112110680A (en) * | 2020-09-14 | 2020-12-22 | 山东高速交通建设集团股份有限公司 | Asphalt reducing agent, cold-mixed pavement finish coat material and finish coat paving method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103073902B (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| González et al. | A study into the processing of bitumen modified with tire crumb rubber and polymeric additives | |
| CN102051056B (en) | Styrene-butadiene rubber modified asphalt composition and preparation method thereof | |
| Kang et al. | Reaction of asphalt and maleic anhydride: Kinetics and mechanism | |
| CN102816447B (en) | Production and application methods of ductility-enhancing modifier for road asphalt | |
| CN104177845A (en) | Styrene-butadiene-styrene block copolymer (SBS)-modified asphalt and preparation method thereof | |
| CN105038279A (en) | Modified asphalt and preparing method thereof | |
| CN105419356B (en) | A kind of low temperature resistant modified pitch and preparation method thereof | |
| CN108473773A (en) | Use the modified pitch of the polymer of ring-containing oxide | |
| CN103709771B (en) | Stable type finished product warm mix rubber modified asphalt and preparation method thereof | |
| CN102040846A (en) | Oil-resistant asphalt pavement material and preparation method thereof | |
| CN103073902B (en) | Polymer-modified asphalt and preparation method thereof | |
| JP2018525481A (en) | Epoxy-functionalized ethylene copolymer asphalt reaction product | |
| CN107849304B (en) | Modified asphalt using phosphorous acid | |
| CN103897594A (en) | Rubber powder modified emulsified asphalt waterproof coating | |
| CN103374229B (en) | A kind of stablizer for SBS modifying asphalt and preparation method thereof | |
| CN104559240B (en) | Modified asphalt compounded by gelatine powder/polymer, and preparation method of modified asphalt | |
| CN107880576A (en) | A kind of modifying agent, preparation method and applications | |
| CN103102707A (en) | High modulus asphalt modifier | |
| CN1287133A (en) | Modified asphalt for road | |
| CN106633951B (en) | A kind of rubber powder composite modified asphalt composition and its preparation and application | |
| CN102453333B (en) | Preparation method of polymer modified asphalt | |
| CN106883627A (en) | A kind of preparation method of ethylene acrylic from aggressiveness modified pitch | |
| CN108410187A (en) | A kind of bituminous composition prepared using macromolecule | |
| CN105176106B (en) | Composite modified high tenacity asphalt | |
| CN109517396A (en) | A kind of modified pitch and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170224 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Refining & Chemical Research Institute (Beijing) Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: China National Offshore Oil and Gas Development and Utilization Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China National Offshore Oil Corporation Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: CNOOC Refining & Chemical Research Institute (Beijing) Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China National Offshore Oil Corporation Patentee before: China National Offshore Oil Corporation Co-patentee before: CNOOC Refining & Chemical Research Institute (Beijing) Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |