WO2015062333A1 - 一种防碳化防水浆料 - Google Patents

一种防碳化防水浆料 Download PDF

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Publication number
WO2015062333A1
WO2015062333A1 PCT/CN2014/084134 CN2014084134W WO2015062333A1 WO 2015062333 A1 WO2015062333 A1 WO 2015062333A1 CN 2014084134 W CN2014084134 W CN 2014084134W WO 2015062333 A1 WO2015062333 A1 WO 2015062333A1
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Prior art keywords
carbonization
powder
calcium
parts
mixture
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PCT/CN2014/084134
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English (en)
French (fr)
Inventor
董峰亮
方楚燕
邓德安
徐英
陈激扬
胡程
丁天华
梁至柔
周碧平
万德刚
严昌俊
阿那
梁卓钧
陈学静
薛静
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德高(广州)建材有限公司
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Publication of WO2015062333A1 publication Critical patent/WO2015062333A1/zh

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D1/00Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/06Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
    • C09D1/08Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482Coating or impregnation materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/22Carbonation resistance

Definitions

  • the invention relates to a waterproof slurry, in particular to a carbonization resistant waterproof slurry, belonging to the technical field of waterproof materials in the construction industry.
  • the so-called “carbonization” means that the cement of the mixed concrete will form Ca(OH) 2 after hydration, and most of it will exist in the concrete in the crystalline state, and it will become a reserve of high porosity in the pores, and its PH value is 12.5 ⁇ 13.5. C0 2 and moisture are present in the air, and C0 2 in the air will permeate into the concrete under the action of water to react with Ca(OH) 2 to lower the pH to 8.5-9, and the concrete is carbonized.
  • the carbonization of concrete is essentially a process in which the pH of the concrete is reduced and the alkalinity is lost.
  • Maintaining an alkaline environment for concrete is an important condition for the maintenance of concrete structures and the protection of their internal reinforcement.
  • a layer of passivation film is formed on the surface of the steel to prevent corrosion of the steel.
  • the carbonized concrete does not provide sufficient alkalinity, causing the steel to rust and increase in volume, causing cracks and cracks in the concrete.
  • the production causes water and C0 2 to enter the crack, further accelerating the corrosion of the steel. This cycle eventually leads to the destruction of the concrete structure.
  • Concrete carbonization begins with the surface layer and then gradually diffuses into the depth of the concrete, causing a deeper carbonization reaction.
  • the carbonized concrete texture is loose and the strength is greatly reduced.
  • Concrete carbonation resistance is an important indicator of the durability of concrete structures. The low carbonation resistance of concrete results in poor durability and reduced service life of the building.
  • the method of preventing carbonation of concrete is usually to apply a layer of organic coating on the concrete surface, to seal the concrete pores to prevent other diffusion of co 2 into the concrete interior, but the organic coating has poor aging resistance and poor compatibility with cement inorganic materials. And the ability to prevent carbonization is not ideal.
  • a layer of organic coating on the concrete surface, to seal the concrete pores to prevent other diffusion of co 2 into the concrete interior, but the organic coating has poor aging resistance and poor compatibility with cement inorganic materials. And the ability to prevent carbonization is not ideal.
  • CN 103333559A discloses an aqueous transparent concrete waterproof and carbonized coating which is composed of an emulsion, water, a transparent powder, a highly transparent filler, a dust-proofing agent, a dispersing agent, a wetting agent, an antifoaming agent, a filming aid and
  • the composition of the thickening leveling agent is a one-component aqueous styrene-methacrylate-acrylate copolymer emulsion
  • the transparent powder is anhydrous sodium sulfate
  • the high transparent filler is white transparent glass powder
  • the dispersing agent It is sodium polyacrylate
  • the wetting agent is nonylphenol ethoxylate
  • the film forming aid is 2,2,4-1,3-pentanediol monoisobutyrate
  • the thickening leveling agent is polyurethane.
  • the disclosed concrete anti-carbonization coatings have also been reported in view of compatibility with cementitious inorganic materials.
  • the patent CN 101693610 B discloses a concrete anti-carbonization coating which is composed of the following parts by weight. Preparation of each component: 315 ⁇ 525 parts by weight of cement, 45 ⁇ 75 parts by weight of steel slag powder, 45 ⁇ 75 parts by weight of fly ash, 45 ⁇ 75 parts by weight of waste concrete powder, 250 ⁇ 550 parts by weight of styrene-acrylic emulsion, 0.35 parts of dispersing agent 2.6 parts by weight, defoaming agent 0.7 to 2.6 parts by weight, and water 45 to 90 parts by weight.
  • the above patent uses waste concrete powder, and cheap steel slag powder and fly ash as raw materials to prepare anti-carbonization coating. Although it can realize the full use of waste materials, reduce the amount of chemical reagents and reduce the production cost, it does not reflect the There are certain deficiencies in the performance indicators of the product in waterproofing.
  • CN 102503300 A disclose a single component consisting of ordinary Portland cement, dispersible polymer powder, quartz sand, quartz powder, cellulose ether, silica fume, water reducing agent, antifoaming agent.
  • Polymer cement waterproof mortar CN 10343969 A discloses an ordinary Portland cement 52.5, granulated blast furnace powder 95#, a penetrant (fatty alcohol polyoxyethylene ether), a swelling agent (calcium or calcium hydroxide, Preventing cement leakage crystal type waterproof coating composed of magnesium hydroxide), silica fume, quartz sand, modified bentonite, modified sodium silicate, complexing agent (polyacrylic acid), and crystal precipitation agent (polyethylene glycol), Its carbonization resistance is still not ideal.
  • a penetrant fatty alcohol polyoxyethylene ether
  • a swelling agent calcium or calcium hydroxide
  • Preventing cement leakage crystal type waterproof coating composed of magnesium hydroxide
  • silica fume silica fume
  • quartz sand modified bentonite
  • modified sodium silicate complexing agent
  • complexing agent polyacrylic acid
  • crystal precipitation agent polyethylene glycol
  • the object of the present invention is to provide a slurry having anti-carbonization and water-proof function by compounding an organic material and an inorganic material, and the slurry formulation is added with a modified carbonization inhibitor, which is a mineral oil to calcium oxide and calcium base.
  • the montmorillonite powder mixture is modified to modify the active ingredient of the carbonization inhibitor, control the release time of the carbonization inhibitor active ingredient, and provide sufficient active calcium to react with CO 2 to form water-insoluble crystals.
  • the entire coated thin layer can form a dense and uniform waterproof layer from the surface to the inside, effectively hinder the penetration of moisture, and the moisture only stays on the surface layer, hindering the penetration of co 2 into the concrete under the action of water, and carbonization occurs.
  • the reaction can obtain better anti-carbonization and waterproof effect; the slurry has good compatibility with inorganic materials such as cement, and only a functional layer of l-2 mm is needed to obtain a good carbonization and waterproof effect.
  • a carbonization-proof waterproof paste consisting of two components of B and B, and components A and B are composed of the following parts by weight:
  • the carbonization inhibitor active ingredient is a mixture of calcium oxide and calcium-based montmorillonite powder, and the calcium oxide and calcium-based montmorillonite powder are mixed in a ratio of 1:1 to 3:1.
  • the carbonization inhibitor is a modification of a mixture of calcium oxide and calcium-based montmorillonite powder modified by mineral oil, and the mixture of calcium oxide and calcium-based montmorillonite powder is attached to mineral oil mist in the form of aggregates. The particles are then coated with mineral oil particles to form granule microspheres.
  • the carbonization inhibitor is prepared by the following steps:
  • the calcium oxide and calcium-based montmorillonite powder are placed in a high-speed mixer at a ratio of 1:1 to 3:1, and uniformly mixed to obtain a mixture powder of calcium oxide and calcium-based montmorillonite powder;
  • the mixture powder obtained in the step (2) is passed through a feed port, enters the atomization chamber, and is left for 1-10 seconds to obtain a carbonization inhibitor.
  • the calcium oxide index is as follows: CaO content is greater than or equal to 95%, activity: at least IJ 400ml/4NHu in 10 minutes, particle size above 200 mesh; the calcium-based montmorillonite powder index is as follows: Particle size: 95% less than 200 Micron, 105 ° C volatile content less than 5%, expansion capacity greater than 95 ml / g, 4 ° viscosity at 25 ° C greater than 3000mpa ⁇ s.
  • the strength grade of the cement is preferably 42.5 or 42.5R or 52.5 Portland cement or ordinary silicate cement.
  • the quartz powder specification is preferably a quartz powder of 100-400 mesh.
  • the redispersible latex powder is preferably an ethylene-vinyl acetate copolymer latex powder or an acrylic latex powder.
  • the cellulose ether is preferably hydroxyethyl methyl cellulose ether or hydroxypropyl methyl cellulose ether, and the cellulose ether has a viscosity of 500 to 100,000 Pa ⁇ s.
  • the superplasticizer is preferably a polycarboxylic acid-based or naphthalenesulfonate superplasticizer.
  • the water repellent is preferably calcium stearate or zinc stearate.
  • the emulsion is preferably a carboxylated styrene butadiene latex or an acrylic emulsion or a styrene-acrylic emulsion having a solid content of 45 to 58%.
  • the antifoaming agent is preferably a liquid hydrocarbon or a mixture of polyethylene glycol and amorphous non-crystalline cerium oxide.
  • the liquid hydrocarbon is preferably suitable for liquid hydrocarbon defoamers in the coatings industry, such as silicone defoamers, liquid organosilicon oxime defoamers, polyether defoamers, higher alcohols, and the like.
  • the preservative is preferably a preservative having a 20% dispersion of the isothiazolinone (BIT) active ingredient, such as Promex 20D.
  • BIT isothiazolinone
  • the anti-carbonization waterproofing paste of the present invention is prepared by the following method:
  • the powder and liquid materials are uniformly mixed according to the ratio of powder to liquid of 1:0.3-0.4, and the anti-carbonization waterproof slurry can be obtained.
  • the construction method using the anti-carbonization waterproof slurry is as follows:
  • the slurry of the present invention is a slurry having an anti-carbonization and water-repellent function by compounding an organic material and an inorganic material, and the waterproof slurry conforms to the standard of JC/T 2090-2011 "Polymer cement waterproofing paste" Performance requirements, when used, only need to apply a thin layer of l-2mm, you can get good carbonization and waterproof effect;
  • the carbonization inhibitor active ingredient in the formulation of the present invention is composed of a mixture of calcium oxide and calcium-based montmorillonite powder, which provides sufficient active calcium to react with co 2 and form water-insoluble crystals, thereby hindering further of co 2 Infiltration, carbonized concrete; carbonization inhibitor in the preparation of the component A of the present invention, after modification of mineral oil, the mixture of calcium oxide and calcium-based montmorillonite powder is attached to the mineral oil particles in the form of aggregates Or forming granular microspheres coated with mineral oil, which can effectively protect the presence of a mixture of calcium oxide and calcium-based montmorillonite powder in the powder, avoiding the formation of the waterproof slurry or the change of the external environment.
  • the application time of the carbonization inhibitor active ingredient can be mixed with the liquid material to make a waterproof slurry.
  • the mineral oil can have an organic group because of its "hydrophobic/lipophilic” characteristics. The gradual “dissolution” of the slurry causes the mixture of calcium oxide and calcium-based montmorillonite powder to be slowly removed or released, and the slurry is extended to the surface of the construction.
  • Coating a thin layer to the inside, the entire surface is coated by a thin layer can be formed to the inside of a dense, uniform waterproof layer efficiently impede the entry of moisture, the moisture retention in the skin only hinder the role of co 2 in water at Infiltrated into the concrete, carbonization occurs, obtaining better anti-carbonization and waterproofing effect, and prolonging the service life of the coating to obtain longer concrete protection time.
  • Example 1 The anti-carbonization waterproofing paste of the present invention was prepared according to the following formulation and procedure:
  • the carbonization inhibitor is prepared by the following steps: ultrasonic atomization at a frequency of 60 kHz, atomizing the mineral oil in the atomization chamber; the stone powder is placed in a high-speed mixer and mixed uniformly to obtain calcium oxide and calcium base. Mixing powder of montmorillonite powder; then passing the prepared mixture powder through the feed port, into the atomization chamber, and staying for 5 seconds to obtain a carbonization inhibitor;
  • Example 2 The anti-carbonization waterproofing paste of the present invention was prepared according to the following formulation and procedure: (1) Accurately weigh the following materials according to the ratio:
  • the carbonization inhibitor is prepared by the following steps: ultrasonic atomization at a frequency of 55 kHz, atomization of the mineral oil in the atomization chamber; then placing the calcium oxide and calcium-based montmorillonite powder in a high-speed mixer according to the formulation ratio Mixing uniformly, obtaining a mixture powder of calcium oxide and calcium-based montmorillonite powder; then passing the prepared mixture powder through the feed port, entering the atomization chamber, and staying for 10 seconds to obtain a carbonization inhibitor;
  • Example 3 The anti-carbonization waterproofing paste of the present invention was prepared according to the following formulation and procedure:
  • the carbonization inhibitor is prepared by the following steps: Using a compressed air atomization technique, the mineral oil is first atomized in a spray chamber at a pressure of 0.25 MPa; then the calcium oxide and calcium-based montmorillonite powder are placed at a high rate according to the formulation ratio. Mixing uniformly in the mixer to obtain a mixture powder of calcium oxide and calcium-based montmorillonite powder; then, the obtained mixture powder is passed through the feed port, enters the atomization chamber, and stays for 1 second to obtain a carbonization inhibitor;
  • the component B is accurately weighed according to the above mixing ratio, and the material such as milk 5 S liquid and water is poured into a liquid blender, stirred for 3 minutes, until uniformly mixed, and packaged, to prepare a liquid material;
  • Example 4 The anti-carbonization waterproofing paste of the present invention was prepared according to the following formulation and procedure:
  • Class filial piety 1 1 group Fibrinogen ether suspected C-based armored police 3 ⁇ 4 sticky > ⁇ 3 ⁇ 4 %
  • the carbonization inhibitor is prepared by the following steps: Using a pressure-shrinking J air atomization technology, the mineral oil is atomized first in the atomization chamber at a pressure of 0.6 MPa; then the calcium oxide and calcium-based montmorillonite powder are formulated according to the formula. Put in high ban.
  • Example 5 The anti-carbonization waterproofing paste of the present invention was prepared according to the following formulation and procedure:
  • the carbonization inhibitor is prepared by the following steps: ultrasonic atomization is carried out at 50 kHz, and the mineral oil is atomized in the atomization chamber; then the calcium oxide and calcium-based montmorillonite powder are placed in the high-speed mixer according to the formulation ratio. Mixing uniformly, obtaining a mixture powder of calcium oxide and calcium-based montmorillonite powder; then passing the prepared mixture powder through the feed port, entering the atomization chamber, and staying for 6 seconds to obtain a carbonization inhibitor;

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
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Abstract

一种防碳化防水浆料。该防碳化防水浆料是一种双组份的有机、无机材料复合的浆料,其组分原料包括:水泥、石英粉、可再分散性乳胶粉、纤维素醚、超塑化剂、憎水剂、碳化抑制剂、乳液、水、消泡剂、防腐剂。所述的碳化抑制剂为氧化钙和钙基蒙脱石粉的混合物经矿物油改性后得到。

Description

一种防碳化防水浆料 技术领域
本发明涉及一种防水浆料, 特别是一种防碳化防水浆料, 属于建筑行业中 的防水材料技术领域。
背景技术
所谓 "碳化"指拌合混凝土的水泥水化后会生成 Ca (OH) 2, 大部分以结 晶状态存在于混凝土中, 成为孔说隙液保持高碱性的储备, 它的 PH 值为 12.5~13.5。 空气中存在 C02和水分, 空气中的 C02会在水的作用下渗透至混凝 土中与 Ca (OH) 2反应, 降低 PH值至 8.5~9书.0, 此时混凝土已碳化。 混凝土的 碳化实质上是混凝土的 pH值降低失去碱性的过程。
混凝土保持碱性环境是混凝土结构保持及其内部钢筋防护的重要条件。 在 高碱性的环境中, 钢筋表层会形成一层钝化膜, 阻止钢筋锈蚀, 而碳化后的混 凝土无法提供足够的碱性, 导致钢筋生锈, 体积增大, 在混凝土内部产生裂缝, 裂缝的产生使水和 C02顺裂缝进入, 进一步加速钢筋的锈蚀。 如此循环, 最终 导致混凝土结构的破坏。 混凝土碳化先从表层开始, 然后逐步向混凝土深处扩 散, 发生更深入的碳化反应, 碳化后的混凝土质地酥松, 强度大大降低。 混凝 土抗碳化能力是衡量混凝土结构耐久性非常重要的一个指标。 混凝土抗碳化能 力低会导致建筑物的耐久性差, 降低使用寿命。
防止混凝土碳化的方法通常是在混凝土表面涂一层有机涂料, 封闭混凝土 孔隙以防止 co2其他扩散至混凝土内部为方案, 但是有机涂层的耐老化性差, 与水泥类无机材料的相容性差, 并且防碳化能力也不甚理想。 例如, 专利申请
CN 103333559A公开了一种水性透明混凝土防水防碳化涂料, 该涂料是由乳 液、 水、 透明粉、 高透明填料、 防尘降剂、 分散剂、 润湿剂、 消泡剂、 成膜助 剂和增稠流平剂组成, 其所述的乳液为单组份水性苯乙烯-甲基丙烯酸酯 -丙烯 酸酯共聚物乳液, 透明粉为无水硫酸钠, 高透明填料为白色透明玻璃粉末, 分 散剂为聚丙烯酸钠、 润湿剂为垸基酚聚氧乙烯醚, 成膜助剂为 2,2,4-1,3-戊二醇 单异丁酸酯, 增稠流平剂为聚氨酯。
考虑到与水泥类无机材料的相容性, 所公开的混凝土防碳化的涂料也有报 道。如专利 CN 101693610 B公开了一种混凝土防碳化涂料,它由以下重量份的 各个组分制备: 水泥 315~525重量份, 钢渣粉 45~75重量份, 粉煤灰 45~75重 量份,废弃混凝土粉 45~75重量份,苯丙乳液 250~550重量份,分散剂 0.35 2.6 重量份, 消泡剂 0.7~2.6重量份, 水 45~90重量份。
空气中的 C02正是在水的存在下渗透至混凝土中导致碳化反应的发生, 因 此, 作为防碳化涂料, 还需要进一步考虑涂料的防水性能。 而上述专利采用废 弃的混凝土粉, 以及价格便宜的钢渣粉、 粉煤灰作为原料配制防碳化涂料, 虽 然可以实现充分利用废弃物料, 减少了化学试剂用量, 降低了生产成本, 但未 体现出该产品在防水方面的性能指标, 存在一定的不足。
一些公开的专利申请, 如 CN 102503300A公开了一种由普通硅酸盐水泥、 可分散乳胶粉、 石英砂、 石英粉、 纤维素醚、 硅灰、 减水剂、 消泡剂组成的单 组份聚合物水泥防水砂浆; CN 10343969 A公开了一种由普通硅酸盐水泥 52.5、 粒化高炉粉 95#、 渗透剂 (脂肪醇聚氧乙烯醚)、 膨胀剂 (钙矾石或氢氧化钙、 氢氧化镁)、 硅灰、 石英砂、 改性膨润土、 改性硅酸钠、 络合剂 (聚丙烯酸)、 结晶沉淀剂 (聚乙二醇) 组成的预防水泥渗漏结晶型防水涂料等, 其防碳化能 力仍不够理想。
发明内容
本发明的目的在于提供一种将有机材料与无机材料复合的具有防碳化、防 水功能的浆料, 该浆料配方加入了改性后的碳化抑制剂, 是以矿物油对氧化钙 和钙基蒙脱石粉混合物进行改性得到, 改性后, 可以有效保护碳化抑制剂的活 性成分, 控制碳化抑制剂活性成分的释放时间, 提供足够的活性钙与 C02反应 并形成不溶于水的晶体, 使整个涂覆薄层由表面至内部均可以形成致密、 均一 的防水层, 高效地阻碍水分的渗入, 使水分仅仅滞留在表层, 阻碍 co2在水的 作用下, 渗透至混凝土中, 发生碳化反应, 获得更优的防碳化防水的效果; 该 浆料与水泥等无机材料相容性佳, 只需 l-2mm的功能薄层, 即可获得很好的防 止碳化和防水效果。
为了解决上述问题, 本发明所采用的技术方案如下: 一种防碳化防水浆料, 由八、 B双组份组成, A、 B组份由以下重量份数的材料组成:
A组份
水泥 250-600份 石英粉 250-500份
可再分散性乳胶粉 5-20份
纤维素醚 0.5-5份
超塑化剂 0.5-4份
憎水剂 0.3-5份
碳化抑制剂 50-100份,
B组份
乳液 200-500份
水 400-800份
消泡剂 0.5-10份
防腐剂 0.5-10份。
所述碳化抑制剂活性成分为氧化钙和钙基蒙脱石粉的混合物, 所述氧化钙 和钙基蒙脱石粉按照 1:1~3:1的比例混合。
所述碳化抑制剂为氧化钙和钙基蒙脱石粉混合物经矿物油改性后的改性 物, 所述的氧化钙和钙基蒙脱石粉的混合物是以聚集体的形式附着在矿物油雾 化后的微粒上, 或是被矿物油微粒包裹, 形成颗粒微球。
所述碳化抑制剂采用如下步骤制备:
( 1 ) 采用常规雾化技术, 在雾化室先将矿物油雾化;
(2)将氧化钙和钙基蒙脱石粉按 1:1~3:1的比例置于入高速混合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料;
(3 )将步骤(2)制得的混合物粉料经过进料口, 进入雾化室内, 停留 1-10秒, 获得碳化抑制剂。
所述氧化钙指标如下: CaO含量大于等于 95%, 活性度: 10分钟内最少达 至 IJ 400ml/4NHu, 粒度在 200目以上; 所述钙基蒙脱石粉指标如下: 粒度: 95% 小于 200微米, 105°C挥发份小于 5%, 膨胀容大于 95 ml/g, 25°C时 4%粘度大 于 3000mpa · s。
所述水泥的强度等级优选为 42.5或 42.5R或 52.5的硅酸盐水泥或普通硅酸 盐水泥。
所述石英粉规格优选为 100-400目的石英粉。 所述可再分散乳胶粉优选为乙烯-醋酸乙烯共聚乳胶粉或丙烯酸类乳胶粉。 所述纤维素醚优选为羟乙基甲基纤维素醚或羟丙基甲基纤维素醚, 纤维素 醚的粘度在 500-100000Pa · s。
所述超塑化剂优选为聚羧酸系或萘磺酸盐高效减水剂。
所述憎水剂优选为硬脂酸钙或硬脂酸锌。
所述乳液优选为羧基丁苯胶乳或丙烯酸乳液或苯丙乳液, 固含量为 45-58%。
所述消泡剂优选液态碳氢化合物或聚乙二醇与非结晶性二氧化矽的混合 物。 所述液态碳氢化合物优选适用于涂料工业的液态碳氢化合物消泡剂, 如有 机硅消泡剂、 液态有机硅氧垸消泡剂、 聚醚类消泡剂、 高级醇类等。
所述防腐剂优选为活性成分为异噻唑啉酮 (BIT) 20%分散体的防腐剂, 如 Promex 20D。
本发明的防碳化防水浆料采用以下方法配制:
( 1 )碳化抑制剂的制备: 采用常规雾化技术, 在雾化室先将矿物油雾化; 取氧 化钙和钙基蒙脱石粉,将氧化钙和钙基蒙脱石粉按 1:1~3:1的比例置于入高速混 合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料; 将制得的混合物 粉料经过进料口, 进入雾化室内, 停留 1-10秒, 制得碳化抑制剂;
(2) 按配比准确称量 、 B组份各原料;
(3 ) 将 A组份的水泥、 石英粉、 可再分散性乳胶粉、 纤维素醚、 超塑化剂、 憎水剂 、 碳化抑制剂放入高速分散机中, 搅拌 2-3分钟, 直至混合均匀, 包装, 即可制成粉料;
(4)将 B组份的乳液、水、消泡剂、 防腐剂倒入液体搅拌机中, 搅拌 2-3分钟, 直至混合均匀, 包装, 即可制成液料;
(5)在施工时, 将粉料与液料按照 1:0.3-0.4的粉液比混合均匀, 即可获得防碳 化防水浆料。
采用防碳化防水浆料的施工方法如下:
( 1 ) 清理混凝土基面, 并充分湿润;
(2)将液料倒入干净的容器中, 然后按比例使用机械搅拌, 一边搅拌一边缓慢 加入粉料, 充分搅拌 3-5分钟直至生成无粉团、 均匀的胶浆; ( 4) 用毛刷将浆料均匀涂刷于处理好的混凝土基面上, 刷完一层后, 待其略 干固 1-2小时 (刚好不粘手) 再刷第二层, 依次涂刷 3-4遍, 厚度控制在 2mm 以内;
( 5 ) 施工 24小时后, 喷细雾水养护即可。
本发明相对于现有技术的有益效果如下:
( 1 )本发明的浆料是一种将有机材料与无机材料复合的具有防碳化、防水功能 的浆料, 该防水浆料符合 JC/T 2090-2011 《聚合物水泥防水浆料》 标准的性能 要求,使用时,只需涂覆 l-2mm的薄层, 即可获得很好的防止碳化和防水效果;
(2)本发明的配方中的碳化抑制剂活性成分为氧化钙和钙基蒙脱石粉混合物组 成, 可提供足够的活性钙与 co2反应并形成不溶于水的晶体, 从而阻碍 co2的 进一步渗透、 碳化混凝土; 碳化抑制剂在制备本发明所述 A组份时, 经过了矿 物油的改性, 可使得氧化钙和钙基蒙脱石粉的混合物以聚集体的形式附着在矿 物油颗粒上, 或是形成被矿物油包裹着的颗粒微球, 可以有效保护氧化钙和钙 基蒙脱石粉的混合物在粉料中的存在, 避免其在防水浆料的制备过程或受到外 界环境的变化引起的损失; 可以碳化抑制剂活性成分的施放时间, 在将粉料与 液料混合制成防水浆料, 用于施工时, 矿物油由于具有 "憎水 /亲油"特性, 可 以在含有有机组分的浆料中逐渐的 "溶解", 使得氧化钙和钙基蒙脱石粉的混合 物得到缓慢的脱除或释放, 并随着浆料延伸至施工表面并渗透至涂覆薄层的内 部, 使整个涂覆薄层由表面至内部均可以形成致密、 均一的防水层, 高效地阻 碍水分的渗入, 使水分仅仅滞留在表层, 阻碍 co2在水的作用下, 渗透至混凝 土中, 发生碳化反应, 获得更优的防碳化防水的效果, 延长涂层的使用寿命获 得更长的混凝土保护时间。
具体实施方式
下面通过实施例对本发明做进一步详细说明, 这些实施例仅用来说明本发 明, 并不限制本发明的范围。
实施例 1 按以下配方和步骤制备本发明所述的防碳化防水浆料:
( 1 ) 按配比准确称量下列材料: (BIT) 2婦體,
(2) 碳化抑制剂采用如下步骤制备: 60kHz 的频率进行超声波雾化, 在雾 化室先将矿物油雾化; 石粉按配方比例置于入高速混 合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料; 再将制得的混合 物粉料经过进料口, 进入雾化室内, 停留 5秒, 获得碳化抑制剂;
(3 ) 将 A组份的水泥、 石英粉等各材料放入高速分散机中, 搅拌 3分钟, 直 至混合均匀, 包装, 即可制成粉料;
(4) 将 B组份按上述配合比准确称
Figure imgf000007_0001
水等材料倒入液体搅拌机中, 搅拌 3分钟, 直至混合均匀, 包装, 即可制成液料;
(5) 将粉料产品与液料产品按照 1:0.3的比例混合均匀, 即可获得防碳化防水 浆料; 对制得的防碳化防水浆料进行性能指标检测, 结果如下表所示:
Figure imgf000007_0002
实施例 2 按以下配方和步骤制备本发明所述的防碳化防水浆料: ( 1 ) 按配比准确称量下列材料:
Figure imgf000008_0001
(2) 碳化抑制剂采用如下步骤制备: 以 55kHz 的频率进行超声波雾化, 在雾 化室先将矿物油雾化; 然后将氧化钙和钙基蒙脱石粉按配方比例置于入高速混 合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料; 再将制得的混合 物粉料经过进料口, 进入雾化室内, 停留 10秒, 获得碳化抑制剂;
(3 ) 将 A组份的水泥、 石英粉等各材料放入高速分散机中, 搅拌 2分钟, 直 至混合均匀, 包装, 即可制成粉料;
(4) 将 B组份按上述配合比准确称量, 将乳液、 水等材料倒入液体搅拌机中, 搅拌 2分钟, 直至混合均匀, 包装, 即可制成液料;
(5) 将粉料产品与液料产品按照 1:0.3的比例混合均匀, 即可获得防碳化防水 浆料。
实施例 3 按以下配方和步骤制备本发明所述的防碳化防水浆料:
( 1 ) 按配比准确称量下列材料:
Figure imgf000009_0001
(2) 碳化抑制剂采用如下步骤制备: 采用压缩空气雾化技术, 以 0.25MPa压 力在雾化室先将矿物油雾化; 然后将氧化钙和钙基蒙脱石粉按配方比例置于入 高速混合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料; 再将制得 的混合物粉料经过进料口, 进入雾化室内, 停留 1秒, 获得碳化抑制剂;
(3 ) 将 A组份的水泥、 石英粉等各材料放入高速分散机中, 搅拌 3分钟, 直 至混合均匀, 包装, 即可制成粉料;
(4) 将 B组份按上述配合比准确称 将乳5 S液、 水等材料倒入液体搅拌机中, 搅拌 3分钟, 直至混合均匀, 包装, 即可制成液料;
(5) 将粉料产品与液料产品按照 1:0.3的比例混合均匀, 即可获得防碳化防水 浆料
实施例 4 按以下配方和步骤制备本发明所述的防碳化防水浆料:
( 1 ) 按配比准确称量下列材料:
- 纏,…-薦靈 1 、
— 量
A. 类孝瞧 1 1 組 :纤绻素醚 疑丙'基甲編警维¾ 粘 > Ρ¾ %
揚讓健 j+ Μ¾ϋΐϊ¾ 」— 應禱剩麵 陣讓 翁麵詹麵 1 Ϊ" 麵: τηΐΐ > 固 置 .:"、 咖
(2) 碳化抑制剂采用如下步骤制备: 采用压霾園缩 J空气雾化技术, 以 0.6MPa压力 在雾化室先将矿物油雾化; 然后将氧化钙和钙基蒙脱石粉按配方比例置于入高 禁.
速混合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料; 再将制得的 混合物粉料经过进料口, 进入雾化室内, 停留 3秒, 获得墓灣碳|化抑制剂;
( 3 ) 将 A组份的水泥、 石英粉等各材料放入高速分散机中, 搅拌 2分钟, 直 至混合均匀, 包装, 即可制成粉料;
(4) 将 B组份按上述配合比准确称量, 将乳液、 水等材料倒入液体搅拌机中, 搅拌 3分钟, 直至混合均匀, 包装, 即可制成液料;
( 5 ) 将粉料产品与液料产品按照 1:0.3的比例混合均匀, 即可获得防碳化防水 浆料。
实施例 5 按以下配方和步骤制备本发明所述的防碳化防水浆料:
( 1 ) 按配比准确称量下列材料:
i 1 維l障絷;囊 基 Φ基f纖意議 續 i ,s :
Figure imgf000011_0001
(2) 碳化抑制剂采用如下步骤制备: 采用 50kHz条件下进行超声波雾化, 在 雾化室将矿物油雾化; 然后将氧化钙和钙基蒙脱石粉按配方比例置于入高速混 合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料; 再将制得的混合 物粉料经过进料口, 进入雾化室内, 停留 6秒, 获得碳化抑制剂;
(3 )将 A组份的水泥、 石英粉等各材料放入高速分散机中, 搅拌 2-3分钟, 直 至混合均匀, 包装, 即可制成粉料;
(4) 将 B组份按上述配合比准确称量, 将乳液、 水等材料倒入液体搅拌机中, 搅拌 2-3分钟, 直至混合均匀, 包装, 即可制成液料;
(5) 将粉料产品与液料产品按照 1:0.3的比例混合均匀, 即可获得防碳化防水 浆料。

Claims

权 禾 iJ 要 求 书
1. 一种防碳化防水浆料, 其特征在于: 由 A、 B双组份组成, A、 B组份由以 下重量份数的材料组成:
A组份
水泥 250-600份
石英粉 250-500份
可再分散性乳胶粉 5-20份
纤维素醚 0.5-5份
超塑化剂 0.5-4份
憎水剂 0.3-5份
碳化抑制剂 50-100份,
B组份
乳液 200-500份
水 400-800份
消泡剂 0.5-10份
防腐剂 0.5-10份。
2. 根据权利要求 1所述的防碳化防水浆料, 其特征在于: 所述碳化抑制剂活性 成分为氧化钙和钙基蒙脱石粉的混合物, 所述氧化钙和钙基蒙脱石粉按照 1: 1-3: 1的比例混合。
3. 根据权利要求 1或 2所述的防碳化防水浆料, 其特征在于: 所述碳化抑制剂 为氧化钙和钙基蒙脱石粉混合物经矿物油改性后的改性物, 所述的氧化钙和钙 基蒙脱石粉的混合物是以聚集体的形式附着在矿物油雾化后的微粒上, 或是被 矿物油微粒包裹, 形成颗粒微球。
4. 根据权利要求 1或 2或 3所述的防碳化防水浆料, 其特征在于: 所述碳化抑 制剂采用如下步骤制备:
( 1 ) 采用常规雾化技术, 在雾化室先将矿物油雾化;
(2)将氧化钙和钙基蒙脱石粉按 1: 1~3: 1的比例置于入高速混合器中混合均匀, 得到氧化钙和钙基蒙脱石粉的混合物粉料;
( 3 )将步骤(2)制得的混合物粉料经过进料口, 进入雾化室内, 停留 1-10秒, 获得碳化抑制剂。
5. 根据权利要求 1或 2或 3或 4所述的防碳化防水浆料, 其特征在于: 所述氧 化钙指标如下: CaO 含量大于等于 95%, 活性度: 10 分钟内最少达到 400ml/4NHu, 粒度在 200目以上; 所述钙基蒙脱石粉指标如下: 粒度: 95%小 于 200微米, 105°C挥发份小于 5%, 膨胀容大于 95 ml/g, 25°C时 4%粘度大于 3000mpa · s。
6. 根据权利要求 1所述的防碳化防水浆料, 其特征在于: 所述水泥为强度等级 为 42.5或 42.5R或 52.5的硅酸盐水泥或普通硅酸盐水泥; 所述石英粉规格为 100-400目的石英粉。
7. 根据权利要求 1所述的防碳化防水浆料, 其特征在于: 所述可再分散乳胶粉 为乙烯-醋酸乙烯共聚乳胶粉或丙烯酸类乳胶粉。
8. 根据权利要求 1所述的防碳化防水浆料, 其特征在于: 所述纤维素醚为羟乙 基甲基纤维素醚或羟丙基甲基纤维素醚, 纤维素醚的粘度在 500-lOOOOOPa · s。
9. 根据权利要求 1所述的防碳化防水浆料, 其特征在于: 所述乳液为羧基丁苯 胶乳或丙烯酸乳液或苯丙乳液, 固含量为 45-58%。
10. 根据权利要求 1所述的防碳化防水浆料, 其特征在于: 所述防腐剂为活性 成分为异噻唑啉酮 BIT 20%分散体。
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