CN105924033A - Efficient organosilicon capillary waterproof agent - Google Patents
Efficient organosilicon capillary waterproof agent Download PDFInfo
- Publication number
- CN105924033A CN105924033A CN201610270621.0A CN201610270621A CN105924033A CN 105924033 A CN105924033 A CN 105924033A CN 201610270621 A CN201610270621 A CN 201610270621A CN 105924033 A CN105924033 A CN 105924033A
- Authority
- CN
- China
- Prior art keywords
- parts
- waterproofing agent
- methyl silicate
- efficient organosilicon
- efficient
- 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.)
- Pending
Links
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 11
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 7
- 239000004202 carbamide Substances 0.000 claims abstract description 7
- 239000000839 emulsion Substances 0.000 claims abstract description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 7
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 7
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 7
- 238000004078 waterproofing Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000008595 infiltration Effects 0.000 claims description 10
- 238000001764 infiltration Methods 0.000 claims description 10
- 239000000470 constituent Substances 0.000 claims description 6
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- XTIIITNXEHRMQL-UHFFFAOYSA-N tripotassium methoxy(trioxido)silane Chemical compound [K+].[K+].[K+].CO[Si]([O-])([O-])[O-] XTIIITNXEHRMQL-UHFFFAOYSA-N 0.000 claims description 3
- XYRAEZLPSATLHH-UHFFFAOYSA-N trisodium methoxy(trioxido)silane Chemical group [Na+].[Na+].[Na+].CO[Si]([O-])([O-])[O-] XYRAEZLPSATLHH-UHFFFAOYSA-N 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 description 9
- 239000004568 cement Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- AIPVRBGBHQDAPX-UHFFFAOYSA-N hydroxy(methyl)silane Chemical compound C[SiH2]O AIPVRBGBHQDAPX-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 239000002969 artificial stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- -1 Art Stone Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/495—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as oligomers or polymers
- C04B41/4961—Polyorganosiloxanes, i.e. polymers with a Si-O-Si-O-chain; "silicones"
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an efficient organosilicon capillary waterproof agent, and relates to the technical field of waterproof agents. The efficient organosilicon capillary waterproof agent comprises, by mass, 100-150 parts of methyl silicate, 2-10 parts of sodium silicate, 50-70 parts of a styrene acrylic emulsion, 5-8 parts of urea, 1-5 parts of soda ash, 5-8 parts of phosphoric acid and 1-5 parts of toluene. The efficient organosilicon capillary waterproof agent has the advantages of high temperature resistance, strong ageing resistance, simple construction, no pollution and wide application range.
Description
Technical field
The present invention relates to waterproofing agent technical field, be specifically related to a kind of efficiently organosilicon infiltration waterproofing agent.
Background technology
Cement waterproof agent is a kind of chemical admixture, is added in cement, when cement setting hardens, volumetric expansion therewith, acts to compensate to shrink producing prestressing force with tension reinforcing steel bar and being sufficient filling with the effect in cement gap.
It is indispensable for having hydrophobic/water-proof function in various degree for many dry-mixed mortar products, such as the decorative mortar of thin-coat plaster outer heat preservation system, tile grout, colored finish mortar and for the waterproof plaster mortar of exterior wall, exterior wall putty, waterproofing slurry, powdery paints and some patching material etc..Make mortar possess certain hydrophobic function to be solved by admixture hydrophobicity additive, it can also can also keep mortar to be in open state simultaneously with other additive such as water reducer etc. with the use of to improve the waterproof ability of mortar further thus allow the diffusion of steam.The performance of this additive can be evaluated by capillary water absorption test method such as EN1015-18.
Waterproofing agent of organosilicon is applicable to stone material and the water-tight corrosion-proofs of brick product such as marble, Art Stone, artificial stone, artificial stone, ceramic tile, mosaic, stone inscription.
Existing waterproofing agent of organosilicon is anti-aging, cracking resistance, antifreeze, resistant abrasion is indifferent, is not easy to be widely used.
Summary of the invention
Present invention aims to defect and the deficiency of prior art, it is provided that a kind of simple in construction, efficient organosilicon infiltration waterproofing agent reasonable in design, easy to use, have high temperature resistant, ageing resistance strong, easy construction, pollution-free, applied widely.
For achieving the above object, the technical solution used in the present invention is: its each constituent mass number is as follows: methyl silicate 100-150 part, sodium metasilicate 2-10 part, styrene-acrylic emulsion 50-70 part, urea 5-8 part, soda ash 1-5 part, phosphoric acid 5-8 part, toluene 1-5 part.
As preferably, described methyl silicate is sodium methyl silicate, potassium methyl silicate etc..
As preferably, described efficient organosilicon infiltration waterproofing agent each constituent mass mark is as follows: methyl silicate 120-130 part, sodium metasilicate 5-10 part, styrene-acrylic emulsion 60-70 part, urea 5-6 part, soda ash 1-4 part, phosphoric acid 2-4 part, toluene 2-4 part.
The operating procedure of the present invention is as follows: first basal plane or metope are cleaned up, and natural air drying；This waterproofing agent and deionized water are coordinated with the ratio of 1:3-5 and stirs, in loading sprayer or spray the most continuously on dry basal plane by row brush or smear 3-5 time, it is ensured that must not be attacked by rainwater in construction 24h, and temperature stops constructing less than 4 DEG C.
The operation principle of the present invention: under the effect of water and carbon dioxide, generate methyl silanol, methyl silanol be condensed further and with construction material chemically reactive, at structural material surface and the insoluble waterproof macromolecular compound that is internally generated one layer of several molecule thick, the most netted silicone resin, this resin molding has the advantages such as waterproof, antiseepage, protection against the tide, resistance rust, anti-aging, antipollution, thus can be widely used in the fields such as cement mortar, gypsum, perlite, armored concrete.
Use after said structure, present invention have the beneficial effect that the efficient organosilicon of one of the present invention permeates waterproofing agent, have high temperature resistant, ageing resistance strong, easy construction, pollution-free, applied widely, the present invention has simple in construction, arranges rationally, the advantages such as cost of manufacture is low.
Detailed description of the invention
Detailed description of the invention one:
This detailed description of the invention the technical scheme is that its each constituent mass number is as follows: methyl silicate 100 parts, sodium metasilicate 80 parts, styrene-acrylic emulsion 60 parts, 8 parts of urea, soda ash 1 part, phosphoric acid 6 parts, toluene 5 parts.
As preferably, described methyl silicate is sodium methyl silicate, potassium methyl silicate etc..
The operating procedure of this detailed description of the invention is as follows: first basal plane or metope are cleaned up, and natural air drying；This waterproofing agent and deionized water are coordinated with the ratio of 1:3 and stirs, in loading sprayer or spray the most continuously on dry basal plane by row brush or smear 3 times, it is ensured that must not be attacked by rainwater in construction 24h, and temperature stops constructing less than 4 DEG C.
Originally the operation principle being embodied as: under the effect of water and carbon dioxide, generate methyl silanol, methyl silanol be condensed further and with construction material chemically reactive, at structural material surface and the insoluble waterproof macromolecular compound that is internally generated one layer of several molecule thick, the most netted silicone resin, this resin molding has the advantages such as waterproof, antiseepage, protection against the tide, resistance rust, anti-aging, antipollution, thus can be widely used in the fields such as cement mortar, gypsum, perlite, armored concrete.
After using said structure, this detailed description of the invention has the beneficial effect that a kind of efficiently organosilicon infiltration waterproofing agent described in this detailed description of the invention, have that high temperature resistant, ageing resistance is strong, easy construction, pollution-free, applied widely, the present invention has simple in construction, arrange rationally, the advantages such as cost of manufacture is low.
Detailed description of the invention two:
This detailed description of the invention the technical scheme is that its each constituent mass number is as follows: methyl silicate 130 parts, sodium metasilicate 8 parts, styrene-acrylic emulsion 55 parts, 6 parts of urea, soda ash 4 parts, phosphoric acid 7 parts, toluene 3 parts.
The operating procedure of this detailed description of the invention is as follows: first basal plane or metope are cleaned up, and natural air drying；This waterproofing agent and deionized water are coordinated with the ratio of 1:4 and stirs, in loading sprayer or spray the most continuously on dry basal plane by row brush or smear 4 times, it is ensured that must not be attacked by rainwater in construction 24h, and temperature stops constructing less than 4 DEG C.
Embodiment:
After this waterproofing agent is mixed according to the ratio of 1:3-10 with deionized water, add cement and sand stirring uses (the most first moistening basal plane), cement granules aquation and dispersion can be accelerated, water consumption is greatly reduced, after closing mortar hardening, pore duct and moisture evaporate the hole stayed, make mortar not produce dry contraction, reduce water absorption rate, be fully achieved cracking resistance, impervious, waterproof, moistureproof, antifreeze, resistant abrasion, the multiple efficacies such as corrosion-resistant.
The above, only in order to technical scheme to be described and unrestricted, other amendment or equivalent that technical scheme is made by those of ordinary skill in the art, without departing from the spirit and scope of technical solution of the present invention, all should contain in the middle of scope of the presently claimed invention.
Claims (4)
1. an efficient organosilicon infiltration waterproofing agent, it is characterised in that: its each constituent mass number is as follows: methyl silicate 100-150 part, sodium metasilicate 2-10 part, styrene-acrylic emulsion 50-70 part, urea 5-8 part, soda ash 1-5 part, phosphoric acid 5-8 part, toluene 1-5 part.
2. an efficient organosilicon infiltration waterproofing agent, it is characterised in that: its operating procedure is as follows: first basal plane or metope are cleaned up, and natural air drying；This waterproofing agent and deionized water are coordinated with the ratio of 1:3-5 and stirs, in loading sprayer or spray the most continuously on dry basal plane by row brush or smear 3-5 time, it is ensured that must not be attacked by rainwater in construction 24h, and temperature stops constructing less than 4 DEG C.
One the most according to claim 1 efficient organosilicon infiltration waterproofing agent, it is characterised in that: described efficient organosilicon infiltration waterproofing agent each constituent mass mark is as follows: methyl silicate 120-130 part, sodium metasilicate 5-10 part, styrene-acrylic emulsion 60-70 part, urea 5-6 part, soda ash 1-4 part, phosphoric acid 2-4 part, toluene 2-4 part.
One the most according to claim 1 efficient organosilicon infiltration waterproofing agent, it is characterised in that: described methyl silicate is sodium methyl silicate, potassium methyl silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270621.0A CN105924033A (en) | 2016-04-27 | 2016-04-27 | Efficient organosilicon capillary waterproof agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270621.0A CN105924033A (en) | 2016-04-27 | 2016-04-27 | Efficient organosilicon capillary waterproof agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105924033A true CN105924033A (en) | 2016-09-07 |
Family
ID=56837561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610270621.0A Pending CN105924033A (en) | 2016-04-27 | 2016-04-27 | Efficient organosilicon capillary waterproof agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105924033A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351783A (en) * | 2017-07-31 | 2017-11-17 | 中治和环保科技（北京）有限责任公司 | Roof of the vehicle and its manufacture method with anti-fouling effect |
| CN108822725A (en) * | 2018-06-26 | 2018-11-16 | 卓荣茂 | A kind of granite Wet-dry waterproofing agent |
| CN109206045A (en) * | 2018-09-08 | 2019-01-15 | 河南正大金盾环保材料有限公司 | A kind of waterproof nano powder and preparation method thereof |
| CN111675505A (en) * | 2020-06-09 | 2020-09-18 | 岳阳市科兴防水材料有限公司 | Permeable sand-fixing waterproof agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0287085A2 (en) * | 1987-04-16 | 1988-10-19 | Wacker-Chemie Gmbh | Polysiloxane coating composition |
| CN1513936A (en) * | 2003-07-23 | 2004-07-21 | 王文立 | Nano-silicon waterproof agent and its production method |
| CN102875050A (en) * | 2012-09-18 | 2013-01-16 | 湘潭市龙城金韶峰涂料有限公司 | Nano-organic-silica water-proofing agent and preparation method thereof |
| CN103555118A (en) * | 2013-10-18 | 2014-02-05 | 江西省科学院应用化学研究所 | Methanesiliconic acid-containing graft polymer and preparation method of waterproofing agent |
| CN104046231A (en) * | 2014-05-30 | 2014-09-17 | 青岛辰青信息技术有限公司 | Nanometer waterproof agent |
| CN104072013A (en) * | 2014-07-16 | 2014-10-01 | 江苏苏博特新材料股份有限公司 | Waterproof preservative for cement-based materials and preparation method of waterproof preservative |
-
2016
- 2016-04-27 CN CN201610270621.0A patent/CN105924033A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0287085A2 (en) * | 1987-04-16 | 1988-10-19 | Wacker-Chemie Gmbh | Polysiloxane coating composition |
| CN1513936A (en) * | 2003-07-23 | 2004-07-21 | 王文立 | Nano-silicon waterproof agent and its production method |
| CN102875050A (en) * | 2012-09-18 | 2013-01-16 | 湘潭市龙城金韶峰涂料有限公司 | Nano-organic-silica water-proofing agent and preparation method thereof |
| CN103555118A (en) * | 2013-10-18 | 2014-02-05 | 江西省科学院应用化学研究所 | Methanesiliconic acid-containing graft polymer and preparation method of waterproofing agent |
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Non-Patent Citations (1)
| Title |
|---|
| 张光磊: "《新型建筑材料》", 31 January 2014, 中国电力出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351783A (en) * | 2017-07-31 | 2017-11-17 | 中治和环保科技（北京）有限责任公司 | Roof of the vehicle and its manufacture method with anti-fouling effect |
| CN108822725A (en) * | 2018-06-26 | 2018-11-16 | 卓荣茂 | A kind of granite Wet-dry waterproofing agent |
| CN109206045A (en) * | 2018-09-08 | 2019-01-15 | 河南正大金盾环保材料有限公司 | A kind of waterproof nano powder and preparation method thereof |
| CN109206045B (en) * | 2018-09-08 | 2021-04-09 | 河南正大金盾环保材料有限公司 | Waterproof nano powder and preparation method thereof |
| CN111675505A (en) * | 2020-06-09 | 2020-09-18 | 岳阳市科兴防水材料有限公司 | Permeable sand-fixing waterproof agent and preparation method thereof |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
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Application publication date: 20160907 |