CN109181477A - Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating and preparation method thereof - Google Patents
Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating and preparation method thereof Download PDFInfo
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- CN109181477A CN109181477A CN201810964647.4A CN201810964647A CN109181477A CN 109181477 A CN109181477 A CN 109181477A CN 201810964647 A CN201810964647 A CN 201810964647A CN 109181477 A CN109181477 A CN 109181477A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coatings to be made of two kinds of components of first, second, the first component is made of the raw material of following parts by weight: 10-25 parts of E-51 epoxy resin, 12-30 parts of F-51 epoxy resin, 10-15 parts of titanium dioxide, 1-2 parts of dark green, 1-2 parts of organic yellow, 1.5-3 parts of thixotropic agents, 0.3-0.5 parts of wetting dispersing agent, 5-8 parts of inert fluid resin, 3-5 parts of reactive diluent, hyperbranched toughener 3-5 parts；15-20 parts of blanc fixe, 8-15 parts of rust resisting pigment, 0.3-0.5 parts of defoaming agent, 0.2-0.4 parts of levelling agent, the second component is to be made of 30-70 parts of modified phenolic amine curing agent and modified fragrant 70-30 parts of rouge amine curing agent, and the mass ratio of the first component and second component is 5-7:1.The solvent-free epoxy heavy-duty anticorrosive coating prepared in the present invention is suitable for gathering line squeezing and coating coating process, and pipe internal coating has good corrosion resistant and physical property, reduces coating process, saves the construction time, improves working efficiency.
Description
Technical field
The present invention relates to technical field of coatings, and in particular to crude oil gathering pipelines inner wall squeezing and coating non-solvent epoxy heavy antisepsis applies
Material, meanwhile, the invention further relates to the preparation methods of the coating.
Background technique
For a long time, contain a large amount of water and auxiliary agent in the crude oil of the gathering line conveying in oil field, inner wall of the pipe is caused
Corrosion it is increasingly severe, at 1 year or so, the time is short just to be leaked general validity period for 3 months, led to pipeline abandonment.It should
For the buried depth of gathering line generally in 1.2m or so, it is costly to replace pipeline, the past when oil price is high, generally
It re-laying, present oil price is sluggish, and oil field profit is low, and the manufacture and laying and update cost of pipeline are again fairly expensive, because
This, high requirement is proposed to anti-corrosion in pipeline.
Summary of the invention
The present invention provides a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating, which is suitable for
Gathering line squeezing and coating coating process, pipe internal coating have good corrosion resistant performance.
A kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating, the coating is by first component, second component
Composition, the first component are made of the raw material of following parts by weight: 10-25 parts of E-51 epoxy resin, F-51 epoxy resin 12-30
Part, 10-15 parts of titanium dioxide, 1-2 parts of dark green, 1-2 parts of organic yellow, 1.5-3 parts of thixotropic agents, 0.3-0.5 parts of wetting dispersing agent,
5-8 parts of inert fluid resin, 3-5 parts of reactive diluent, hyperbranched toughener 3-5 parts；15-20 parts of blanc fixe, antirust face
8-15 parts, 0.3-0.5 parts of defoaming agent, 0.2-0.4 parts of levelling agent of material；
The second component is made of 30-70 parts of modified phenolic amine curing agent and modified fragrant 70-30 parts of rouge amine curing agent；
The mass ratio of the first component and second component is 5-7:1.
Further, the inert fluid resin is nonactive liquid non-solvent Petropols.
Further, the reactive diluent is BGE reactive diluent.
Further, the wetting dispersing agent selects block copolymerization species wetting dispersing agent, preferably BYK161.
Further, the thixotropic agents are made of hydrophobic type gas phase silica, solid polyamide wax.
Further, the defoaming agent is polysiloxane defoamer.
Further, the levelling agent is fluorinated levelling agent.
Further, the toughener is hyper-branched polyester toughener.
Further, the coating is grouped as by first component, second group, the first component by following parts by weight raw material group
At: 20 parts of E-51 epoxy resin, 20 parts of F-51 epoxy resin, 12 parts of titanium dioxide, 1.5 parts of dark green, 1.5 parts of organic yellow, solid
1.2 parts of polyamide wax, 1 part of hydrophobic type gas phase silica, 0.5 part of wetting dispersing agent, 5.6 parts of inert fluid resin, activity is dilute
3 parts of agent are released, 4 parts of hyperbranched toughener；17 parts of blanc fixe, 12 parts of rust resisting pigment, 0.4 part of defoaming agent, 0.3 part of levelling agent；
The second component is to be made of 30 parts of modified phenolic amine curing agent and modified fragrant 70 parts of amine curing agent of rouge；It is described
The mass ratio of first component and second component is 5-7:1.
The preparation method of above-mentioned crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating, including following step
It is rapid:
First component:
Step a, by E-51 epoxy resin, F-51 epoxy resin, inert fluid resin, hyperbranched toughener, wetting and dispersing
Agent, titanium dioxide, dark green, organic yellow, thixotropic agents, rust resisting pigment, blanc fixe mix according to the ratio, with 1000-1500 turn/
The revolving speed of minute stirs 0.5h；
Step b, the material being stirred is ground to fineness≤80 μm with colloid mill；
Step c, ground material is stirred with 1500-2000 revs/min of revolving speed to 50-60 DEG C of temperature, keeps 10
Minute；
Step d, 50 DEG C are cooled to hereinafter, levelling agent, defoaming agent is added, 1000 revs/min are stirred 10 minutes；
Second component:
Modified phenolic amine curing agent, modified fragrant rouge amine curing agent are mixed in proportion；
First component and second component are uniformly mixed according to the ratio of regulation to get crude oil gathering pipelines inner wall squeezing and coating are arrived without molten
Agent epoxy heavy-duty anticorrosive coating.
Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating of the present invention has the advantages that
(1) crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating prepared by the present invention can be improved corrosion-resistant
Performance, salt spray resistance and heat resistance are able to maintain good flexibility under conditions of high film thickness, ensure that painting
Layer has preferable corrosion resistance and physical property, and the construction method after optimization can be after coating twice just more than 1000
The thickness of micron, reduces coating number, saves the construction time, improves working efficiency, reduces economic cost.Present invention choosing
Good with modified phenolic amine hardener chemical-resistant, low temperature stemness is good, and modified arylated alkyl amine curing agent chemicals-resistant is good, can operate the phase
Long, two kinds of curing agent are used in compounding the balance that can achieve stemness and working life.
(2) epoxy resin of the present invention selects two kinds of epoxy resin E-51, F-51 compositions, and F-51 is novolac epoxy resin, can
To improve the chemical-resistant and temperature tolerance of paint film, but F-51 viscosity is too high needs to reduce body using the lower E-51 cooperation of viscosity
It is viscosity.
(3) inert fluid filler of the present invention is liquid non-solvent Petropols, itself does not contain solvent, with excellent resistance to
Chemicals, and working life can be extended.Wetting dispersing agent selects block copolymer, has wetting well to organic pigment
Dispersibility, and can be very good to reduce system viscosity.Thixotropic agents select hydrophobic type gas phase silica, solid polyamide wax
It is used cooperatively, good sag resistance can be played.
(4) defoaming agent of the present invention be polysiloxane defoamer, can be very good in high viscosity, thick film systems deaeration and
Brokenly bubble can effectively avoid the paint film protective as caused by bubble from failing.
(5) the hyperbranched toughener of the present invention can participate in the reaction of system, form high-intensitive inierpeneirating network structure, both may be used
So that paint film has very strong cohesive force, and there can be good flexibility in the case where high film thickness.
Specific embodiment
Based on design philosophy of the invention, in the following, in conjunction with specific embodiments to a kind of crude oil gathering pipelines of the invention
Inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating is described in further detail:
Embodiment 1-4
Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating first component raw material weight composition is as shown in the table:
Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating second component raw material weight composition is as shown in the table:
The preparation process of above-mentioned crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating is real according to the following steps
It applies:
First component:
Step a, by E-51 epoxy resin, F-51 epoxy resin, inert fluid resin, hyperbranched toughener, wetting and dispersing
Agent, titanium dioxide, dark green, organic yellow, thixotropic agents, rust resisting pigment, blanc fixe mix according to the ratio, with 1000-1500 turn/
The revolving speed of minute stirs 0.5h；
Step b, the material being stirred is ground to fineness≤80 μm with colloid mill；
Step c, ground material is stirred with 1500-2000 revs/min of revolving speed to temperature 50-
It 60 DEG C, is kept for 10 minutes；
Step d, 50 DEG C are cooled to hereinafter, levelling agent, defoaming agent is added, 1000 revs/min are stirred 10 minutes；
Second component:
Modified phenolic amine hardener, modified arylated alkyl amine curing agent are mixed in proportion；
The mass ratio of first component and second component is 5:1 in embodiment 1
The mass ratio of first component and second component is 5:1 in embodiment 2
The mass ratio of first component and second component is 6:1 in embodiment 3
The mass ratio of first component and second component is 6:1 in embodiment 4
Embodiment 1-4 is maked sample, by standard SY/T0457-2010 " erosion resistant coating in steel pipe liquid epoxy coating
Technical standard " detection.
Testing result is as follows:
It can be seen that chemical-resistant of the invention, resistance to crude oil, mechanical performance are excellent by testing above, can expire completely
The requirement of sufficient SY/T0457-2010 standard, wherein acid and alkali resistance, salt performance are required significantly better than standard index, and sag resistance
It can achieve 500 μm or more not saggings, and working life can achieve 90-120 minutes, can satisfy inner wall of the pipe coating tech
Construction time.
Claims (10)
1. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating, which is characterized in that the coating is by first group
Point, second group be grouped as, the first component is made of the raw material of following parts by weight: 10-25 parts of E-51 epoxy resin, F-51 epoxy
12-30 parts of resin, 10-15 parts of titanium dioxide, 1-2 parts of dark green, 1-2 parts of organic yellow, 1.5-3 parts of thixotropic agents, wetting dispersing agent
0.3-0.5 parts, 5-8 parts of inert fluid resin, 3-5 parts of reactive diluent, hyperbranched toughener 3-5 parts；Blanc fixe 15-20
Part, 8-15 parts of rust resisting pigment, 0.3-0.5 parts of defoaming agent, 0.2-0.4 parts of levelling agent；
The second component is made of 30-70 parts of modified phenolic amine curing agent and modified fragrant 70-30 parts of rouge amine curing agent；It is described
The mass ratio of first component and second component is 5-7:1.
2. crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 1, which is characterized in that
The inert fluid resin is nonactive liquid non-solvent Petropols.
3. crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 2, which is characterized in that
The reactive diluent is BGE reactive diluent.
4. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 1, feature
It is, the wetting dispersing agent selects block copolymerization species wetting dispersing agent, preferably BYK161.
5. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 1, feature
It is, the thixotropic agents are made of hydrophobic type gas phase silica, solid polyamide wax.
6. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 1, feature
It is, the defoaming agent is polysiloxane defoamer.
7. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 1, feature
It is, the levelling agent is fluorinated levelling agent.
8. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 1, feature
It is, the toughener is hyper-branched polyester toughener.
9. a kind of crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating according to claim 5, feature
Be, which is characterized in that the coating is grouped as by first component, second group, the first component by following parts by weight raw material group
At: 20 parts of E-51 epoxy resin, 20 parts of F-51 epoxy resin, 12 parts of titanium dioxide, 1.5 parts of dark green, 1.5 parts of organic yellow, solid
1.2 parts of polyamide wax, 1 part of hydrophobic type gas phase silica, 0.5 part of wetting dispersing agent, 5.6 parts of inert fluid resin, activity is dilute
3 parts of agent are released, 4 parts of hyperbranched toughener；17 parts of blanc fixe, 12 parts of rust resisting pigment, 0.4 part of defoaming agent, 0.3 part of levelling agent；
The second component is to be made of 30 parts of modified phenolic amine curing agent and modified fragrant 70 parts of amine curing agent of rouge；The first group
Dividing with the mass ratio of second component is 5-7:1.
10. a kind of crude oil gathering pipelines inner wall squeezing and coating non-solvent epoxy heavy antisepsis as claimed in any one of claims 1-9 wherein applies
The preparation method of material, which comprises the following steps:
First component:
Step a, by E-51 epoxy resin, F-51 epoxy resin, inert fluid resin, hyperbranched toughener, wetting dispersing agent, titanium
White powder, dark green, organic yellow, thixotropic agents, rust resisting pigment, blanc fixe mix according to the ratio, with 1000-1500 revs/min
Revolving speed stir 0.5h；
Step b, the material being stirred is ground to fineness≤80 μm with colloid mill；
Step c, ground material is stirred with 1500-2000 revs/min of revolving speed to 50-60 DEG C of temperature, is kept for 10 minutes；
Step d, 50 DEG C are cooled to hereinafter, levelling agent, defoaming agent is added, 1000 revs/min are stirred 10 minutes；
Second component:
Modified phenolic amine curing agent, modified fragrant rouge amine curing agent are mixed in proportion；
First component and second component are uniformly mixed according to the ratio of regulation to get the solvent-free ring of crude oil gathering pipelines inner wall squeezing and coating is arrived
Oxygen anticorrosive paint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810964647.4A CN109181477A (en) | 2018-08-23 | 2018-08-23 | Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating and preparation method thereof |
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| CN201810964647.4A CN109181477A (en) | 2018-08-23 | 2018-08-23 | Crude oil gathering pipelines inner wall squeezing and coating solvent-free epoxy heavy-duty anticorrosive coating and preparation method thereof |
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| CN109181477A true CN109181477A (en) | 2019-01-11 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205746A (en) * | 2020-01-21 | 2020-05-29 | 西北永新涂料有限公司 | Solvent-free oil pipeline anticorrosion and drag reduction special coating and preparation method thereof |
| CN111253832A (en) * | 2020-02-07 | 2020-06-09 | 华北水利水电大学 | Heavy-duty anticorrosive paint and application thereof |
| CN111334166A (en) * | 2020-04-03 | 2020-06-26 | 西安天元合成材料有限公司 | High-temperature-resistant high-pressure-resistant solvent-free heavy-duty anticorrosive paint and preparation method thereof |
| CN112574646A (en) * | 2020-12-14 | 2021-03-30 | 无锡中油瑞德防腐科技有限公司 | Solvent-free temperature-resistant epoxy phenolic anticorrosive paint and preparation method thereof |
| CN113278343A (en) * | 2021-06-09 | 2021-08-20 | 厦门双瑞船舶涂料有限公司 | Temperature-resistant anticorrosive coating and preparation method thereof |
| CN113583537A (en) * | 2021-07-01 | 2021-11-02 | 江西省高精科技有限公司 | Water-based epoxy paint and preparation method thereof |
| CN114395312A (en) * | 2022-03-11 | 2022-04-26 | 江苏华梦园科技有限公司 | High-strength anti-drag pipeline inner wall anticorrosive paint and preparation method thereof |
| CN114410143A (en) * | 2022-03-30 | 2022-04-29 | 山东多驰材料科技有限公司 | Static-conducting continuous composite internal anti-corrosion steel pipe and manufacturing method thereof |
| CN116769385A (en) * | 2023-07-17 | 2023-09-19 | 广东蓝风环境科技服务有限公司 | Anti-cracking anticorrosive paint and preparation method thereof |
| CN116769385B (en) * | 2023-07-17 | 2024-04-26 | 广东省漆色彩新型材料有限公司 | Anti-cracking anticorrosive paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111205746A (en) * | 2020-01-21 | 2020-05-29 | 西北永新涂料有限公司 | Solvent-free oil pipeline anticorrosion and drag reduction special coating and preparation method thereof |
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| CN113278343A (en) * | 2021-06-09 | 2021-08-20 | 厦门双瑞船舶涂料有限公司 | Temperature-resistant anticorrosive coating and preparation method thereof |
| CN113583537A (en) * | 2021-07-01 | 2021-11-02 | 江西省高精科技有限公司 | Water-based epoxy paint and preparation method thereof |
| CN114395312A (en) * | 2022-03-11 | 2022-04-26 | 江苏华梦园科技有限公司 | High-strength anti-drag pipeline inner wall anticorrosive paint and preparation method thereof |
| CN114410143A (en) * | 2022-03-30 | 2022-04-29 | 山东多驰材料科技有限公司 | Static-conducting continuous composite internal anti-corrosion steel pipe and manufacturing method thereof |
| CN116769385A (en) * | 2023-07-17 | 2023-09-19 | 广东蓝风环境科技服务有限公司 | Anti-cracking anticorrosive paint and preparation method thereof |
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Application publication date: 20190111 |