CN104553130A - Fusible high-performance elastomer modified asphalt waterproof roll - Google Patents
Fusible high-performance elastomer modified asphalt waterproof roll Download PDFInfo
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- CN104553130A CN104553130A CN201510035577.0A CN201510035577A CN104553130A CN 104553130 A CN104553130 A CN 104553130A CN 201510035577 A CN201510035577 A CN 201510035577A CN 104553130 A CN104553130 A CN 104553130A
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- modified asphalt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B11/046—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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Abstract
The invention discloses a fusible high-performance elastomer modified asphalt waterproof roll. The fusible high-performance elastomer modified asphalt waterproof roll sequentially comprises a heat-sensitive fusible OPP (o-phenylphenol) isolating membrane, a fusible elastomer modified asphalt, a polyester reinforcement, fusible elastomer modified asphalt and a heat-sensitive fusible OPP isolating membrane from top to bottom. When the fusible high-performance elastomer modified asphalt waterproof roll is applied, the construction efficiency can be improved, the energy consumption is reduced, and the waterproof roll is energy-saving, environment-friendly and long in service life and has good economic benefits and social benefits. The experiment proves that the fusible high-performance elastomer modified asphalt waterproof roll disclosed by the invention has the advantage that the construction rate can be improved by 10-20 percent.
Description
Technical field
The present invention relates to a kind of modified asphalt waterproof coiled material, be specifically related to a kind of meltable type high performance elastomer modified asphalt waterproof coiled material.
Background technology
Elastomer (SBS) modified asphalt waterproof coiled material is for tire base with polyester felt or Chopped Strand Mat, using s-B-S (SBS) copolymerizable thermosetting elastomer as modifier, two sides is coated with polyethylene film, fine sand, modified asphalt waterproof coiled material made by powder or mineral particle (sheet) material, it occupies absolute leading position in European waterproof material market, except Italy, other European Countries are all modified as master with SBS, occupation rate of market reaches more than 80%, and be applied in various building, highway, railway, the engineering project fields such as bridge airport and subway.China introduces modified asphalt waterproof coiled material production technology from last century the mid-80, elastomer (SBS) modified asphalt waterproof coiled material is because of its good physical property, high temperature resistant and low temperature flexibility and water resistance, extensively promoted and used at home.
At present, elastomer (SBS) modified asphalt waterproof coiled material generally needs the construction of hot melt engineering method could have been given play to the waterproof effect of expection.The existing modified asphalt waterproof coiled material overwhelming majority structurally and functionally innovates, and does not carry out improving in workability to modified pitch and promotes.And existing modified asphalt waterproof coiled material is executing man-hour requirement employing natural gas, hot melt application is carried out in the non-renewable fuel combustion such as methane, construction temperature often needs to remain on 2000 ~ 3000 DEG C, the fossil fuel that this form of construction work consumption is a large amount of, certainly will cause the waste to resource.Along with China is to the situation of environmental protection increasingly stringent, how in practice of construction process, to reduce energy resource consumption, reduce pollutant emission and improve efficiency of construction, can ensure that again the physical property of waterproof roll and waterproof effect seem most important simultaneously.
Summary of the invention
Technical problem to be solved by this invention is, provides the meltable type high performance elastomer modified asphalt waterproof coiled material that a kind of hot melt is higher, reduces the consumption of the energy.
The technical scheme that the present invention solves the employing of its technical problem is: a kind of meltable type high performance elastomer modified asphalt waterproof coiled material, this coiled material is followed successively by the meltable type OPP barrier film of thermal sensitivity from top to bottom, meltable type elastomer modified asphalt, polyester blank, meltable type elastomer modified asphalt and the meltable type OPP barrier film of thermal sensitivity.
Coiled material of the present invention, its length, thickness etc. can Reasonable adjustment according to actual needs, generally for sale, transport and construction easy, the width of unit waterproof roll is 1000mm, and the construction that wherein one end has a 100mm width aligns boost line (for getting up to form larger region by polylith waterproof roll overlap joint when constructing), and waterproof roll thickness is 3 ~ 5mm.
Further, described polyester plies is grammes per square metre is 200g/m
2~ 250g/m
2, thickness is 1.2mm ~ 1.6mm.
Further, described polyester plies material therefor all can according to technical indicator demand commercially, such as multi-functional polyester non-woven fabric etc.
Further, the meltable type separating film layer of described thermal sensitivity is the OPP barrier film of fusing point 500 ~ 600 DEG C, and thickness is 0.008mm ~ 0.015mm.
Further, described meltable type high-performance elastic modified asphalt is made up of the raw material of following weight proportion:
Further, described meltable type high-performance elastic modified asphalt is made up of the raw material of following weight proportion:
Further, described asphalt is naphthene crude oils bitumen A level, and needle penetration is 70 ~ 200 (in 0.1mm); Described bitumen is the natural rock asphalt or natural lake asphalt that asphaltenes is relatively high; Described softening agent is one or more mixtures subtracting line machine oil, furfural extract oil, naphthenic oil, aromatic naphtha and contain in low-molecular-weight aromatic cosolvent; Described elastomer modifier is line style and one or more mixtures of star-like styrene-butadiene block copolymer; Other modifier described is one or more mixtures in butadiene-styrene rubber, butadiene rubber and EP rubbers; Described flexibilizer is one or more mixtures in ACM, chlorosulfonated polyethylene, ABS flexibilizer, polyvinyl butyral resin, polyvinyl acetate; Described antiaging agent is one or more mixtures in phenyl salicytate, Ultraviolet Absorber UV-P, UV-O, UV-531, light stabilizer GW-540, sulphur, sulfurous organic compound and organic peroxide; Described filler is one or more mixtures in precipitated calcium carbonate, powdered whiting and talcum powder; Described thickener is natural clay, diatomite, Magnesiumaluminumsilicate, one or more mixtures in bentonite and attapulgite.
Further, described asphalt is cycloalkyl virgin petroleum pitch, and needle penetration is 220 ~ 260, in 0.1mm; Described bitumen is natural lake asphalt; Elastomer modifier is star-shaped sbs; Other modifier are the mixture of arbitrarily both or three in butadiene-styrene rubber, butadiene rubber and EP rubbers; Described flexibilizer is the mixture of ACM, chlorosulfonated polyethylene; Described antiaging agent is light stabilizer GW-540 and/or organic peroxide; Described filler is powdered whiting and talcous mixture; Described thickener is bentonite or attapulgite.
Bitumen asphaltenes used in meltable type high performance elastomer modified asphalt waterproof coiled material in the present invention is relatively high, improves the ageing-resistant performance of final products.
Star-shaped sbs is adopted to provide superior ageing-resistant performance in meltable type high performance elastomer modified asphalt waterproof coiled material in the present invention.
Adopt other modifier to supplement elastomer modifier deficiency in meltable type high performance elastomer modified asphalt waterproof coiled material in the present invention, reach synergy with elastomer modifier.
In the present invention, in meltable type high performance elastomer modified asphalt waterproof coiled material, flexibilizer substantially increases the contact between various modifier, improves the toughness of product, peel strength, enhances the adhesive strength between density between sizing material and basic unit.
In the present invention in meltable type high performance elastomer modified asphalt waterproof coiled material antiaging agent for improving the ageing resistace of perceptual asphalt water-proof coiled material.
In the present invention, in meltable type high performance elastomer modified asphalt waterproof coiled material, thickener is used for the softening point and the denseness that greatly improve modified pitch, but does not improve the fusing point of modified pitch.
Preferably, the preparation method of the meltable type high performance elastomer modified asphalt waterproof coiled material of the present invention, comprises the following steps:
Meltable type high performance elastomer process for preparing modified asphalt:
1. asphalt and bitumen are heated to 140 ~ 160 DEG C;
2. add softening agent, SBS, other modifier and flexibilizer successively, stir, continue to be warming up to 180 ~ 190 DEG C, grow 30 ~ 45 minutes at this temperature, open colloid mill and accelerate swelling process, and make modifier homogenizing more complete;
3. stop colloid mill after two hours, add filler and thickener, at 180 DEG C ~ 190 DEG C temperature, continue stirring 45 ~ 90 minutes;
4. finally add antiaging agent, stir at 160 DEG C ~ 190 DEG C after 30 ~ 45 minutes and can discharging produce.
Meltable type high performance elastomer modified asphalt waterproof coiled material preparation technology:
1. launched by tire base, slow transit through tire base baker to reach the object of the moisture of drying in tire base, baker temperature controls at 190 DEG C ~ 200 DEG C;
2. tire base is through preimpregnation oil sump, soaks into tire base, and preimpregnation oil temperature controls at 190 DEG C ~ 200 DEG C;
3. after tire base is soaked into completely by being coated with oil sump, be coated in by meltable type high performance modified bitumen by the tire base that soaks into, the painting oil temperature of meltable type high performance modified bitumen controls at 180 DEG C ~ 190 DEG C;
4. pass through thickness measuring roller after applying modified pitch, after reaching desired thickness, enter water bed cooling;
5. upper surface modified pitch requires to be cooled to 100 DEG C ~ 120 DEG C, and lower surface modified pitch requires to be cooled to 80 DEG C ~ 100 DEG C;
6. upper and lower surface is all adhered to the meltable type OPP barrier film of upper thermal sensitivity, and use knurling rolls compacting.
7. by stopping frame and making it cool, then enter coiling machine and carry out batching, packing.
The meltable type high performance elastomer modified asphalt waterproof coiled material of the present invention adopts the meltable type separating film layer of thermal sensitivity, and construction temperature only needs 700 ~ 800 DEG C, has greatly saved energy resource consumption; With the addition of inorganic thickening agent in meltable type high-performance elastic modified asphalt coating simultaneously, can improve viscosity and the softening point of modified pitch, contribute to the raising of the production and construction speed of modified pitch, is the Main Means improving hot melt.Experiment proves, the meltable type high performance elastomer modified asphalt waterproof coiled material of the present invention can improve construction speed 10 ~ 20%, energy-conserving and environment-protective, and long perfomance life.
The meltable type high performance elastomer modified asphalt waterproof coiled material of the present invention has meltable in construction, firmly bonding, self-healing ability is strong, structurally can adapt to basic unit be slightly out of shape, there is the feature of higher dimensional stability simultaneously, be specially adapted to roofing, basementwaterproofing and waterproof repairment engineering.The meltable type high performance elastomer modified asphalt waterproof coiled material Structure composing of the present invention is simple, and production cost reduces, and especially can improve efficiency of construction when applying and reduces and reduce energy resource consumption, have good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the organigram of embodiment 1 meltable type high performance elastomer modified asphalt waterproof coiled material.
Fig. 2 is preparation technology's flow chart of meltable type high performance elastomer modified asphalt waterproof coiled material.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is illustrated further.
Embodiment 1
Polyester blank specification selects grammes per square metre to be 250g/m
2, thickness is 1.6mm; The upper and lower surface thickness of meltable type high-performance elastic modified asphalt is respectively 1.0mm and 1.1mm; Upper and lower surface heat sensitivity meltable type OPP separating film layer thickness is 0.01mm.
1, the sizing material of meltable type high-performance elastic modified asphalt is composed as follows:
The preparation method of meltable type high-performance elastic modified asphalt:
(1) 35% asphalt and 14% natural lake asphalt are heated to 150 DEG C;
(2) add successively 5% naphthenic oil, the SBS4402 of 8%, the butadiene-styrene rubber of 5% and 2% ACM stir, be warming up to 185 DEG C.Grow 40 minutes at this temperature, then open colloid mill and accelerate swelling process, and make modifier homogenizing more complete.
Stop colloid mill after (3) two hours, add the powdered whiting of 25.8% and the attapulgite of 5%, at 185 DEG C of temperature, continue growth 70 minutes.
(4) finally add the light stabilizer GW-540 of 0.2%, stir at 180 DEG C after 40 minutes and can discharging produce.
2, the preparation technology of meltable type high performance elastomer modified asphalt waterproof coiled material:
(1) launched by tire base, slow transit through tire base baker to reach the object of the moisture of drying in tire base, baker temperature controls at 195 DEG C;
(2) tire base is through preimpregnation oil sump, soaks into and extracts tire base, and preimpregnation oil temperature controls at 195 DEG C;
(3) after tire base is soaked into completely by being coated with oil sump, be coated in by meltable type high performance modified bitumen by the tire base that soaks into, the painting oil temperature of meltable type high performance modified bitumen controls at 190 DEG C;
(4) pass through thickness measuring roller after applying modified pitch, after reaching desired thickness, enter water bed cooling;
(5) upper surface modified pitch requires to be cooled to 110 DEG C, and lower surface modified pitch requires to be cooled to 90 DEG C;
(6) upper and lower surface is all adhered to the meltable type OPP barrier film of upper thermal sensitivity, and use knurling rolls compacting.
(7) making it cool by stopping frame, then entering coiling machine and carrying out batching, packing.
3, meltable type high performance elastomer modified asphalt waterproof coiled material construction temperature
Meltable type high performance elastomer modified asphalt waterproof coiled material lower surface adopts the meltable type OPP film of thermal sensitivity, and fusing point is only 500 ~ 600 DEG C.When adopting hot melt application mode to carry out hot melt to it, make modified pitch sizing material melt required flame envelope temperature completely and be only 700 ~ 800 DEG C.
4, waterproof roll typical case detected value
Embodiment 2
Polyester blank specification selects grammes per square metre to be 200g/m
2, thickness is 1.2mm; The upper and lower surface thickness of meltable type high-performance elastic modified asphalt is respectively 1.0mm and 1.2mm, and the meltable type OPP separating film layer of upper and lower surface heat sensitivity is 0.01mm.
1, the sizing material of meltable type high-performance elastic modified asphalt is composed as follows:
The preparation method of meltable type high-performance elastic modified asphalt:
(1) 42% asphalt and 15% natural lake asphalt are heated to 160 DEG C;
(2) add successively 8% vacuum 1st side cut machine oil, the SBS4402 of 12%, the butadiene rubber of 5% and 2% ACM stir, be warming up to 190 DEG C.Grow 30 minutes at this temperature, then open colloid mill and accelerate swelling process, and make modifier homogenizing more complete.
Stop colloid mill after (3) two hours, add the powdered whiting of 10.5% and the attapulgite of 5%, at 180 DEG C of temperature, continue growth 90 minutes.
(4) finally add the light stabilizer GW-540 of 0.5%, stir at 180 DEG C after 45 minutes and can discharging produce.
2, the preparation technology of meltable type high performance elastomer modified asphalt waterproof coiled material:
(1) launched by tire base, slow transit through tire base baker to reach the object of the moisture of drying in tire base, baker temperature controls at 190 DEG C;
(2) tire base is through preimpregnation oil sump, soaks into and extracts tire base, and preimpregnation oil temperature controls at 190 DEG C;
(3) after tire base is soaked into completely by being coated with oil sump, be coated in by meltable type high performance modified bitumen by the tire base that soaks into, the painting oil temperature of meltable type high performance modified bitumen controls at 185 DEG C;
(4) pass through thickness measuring roller after applying modified pitch, after reaching desired thickness, enter water bed cooling;
(5) upper surface modified pitch requires to be cooled to 120 DEG C, and lower surface modified pitch requires to be cooled to 100 DEG C;
(6) upper and lower surface is all adhered to the meltable type OPP barrier film of upper thermal sensitivity, and use knurling rolls compacting.
(7) making it cool by stopping frame, then entering coiling machine and carrying out batching, packing.
3, meltable type high performance elastomer modified asphalt waterproof coiled material construction temperature
Meltable type high performance elastomer modified asphalt waterproof coiled material lower surface adopts thermal sensitivity OPP film, and fusing point is only 500 ~ 600 DEG C.When adopting hot melt application mode to carry out hot melt to it, make modified pitch sizing material melt required flame envelope temperature completely and be only 700 ~ 800 DEG C.
4, waterproof roll typical case detected value
Embodiment 3
Polyester blank specification selects grammes per square metre to be 220g/m
2, thickness is 1.35mm; Mineral particle thickness of feed layer 0.7mm, the upper and lower surface thickness of high elastic modified asphalt is respectively 1.1mm and 1.3mm, and upper and lower surface heat sensitivity meltable type OPP separating film layer thickness is 0.01mm.
1, the sizing material of meltable type high-performance elastic modified asphalt is composed as follows:
The preparation method of meltable type high-performance elastic modified asphalt:
(1) 40% asphalt and 11% natural lake asphalt are heated to 160 DEG C;
(2) add successively 5% naphthenic oil, the SBS4402 of 12%, the EP rubbers of 5% and 2% ACM stir, be warming up to 180 DEG C.Grow 45 minutes at this temperature, then open colloid mill and accelerate swelling process, and make modifier homogenizing more complete.
Stop colloid mill after (3) two hours, add the powdered whiting of 14.9% and the attapulgite of 10%, at 190 DEG C of temperature, continue growth 90 minutes.
(4) finally add the light stabilizer GW-540 of 0.1%, stir at 180 DEG C after 30 minutes and can discharging produce.
2, the preparation technology of meltable type high performance elastomer modified asphalt waterproof coiled material:
(1) launched by tire base, slow transit through tire base baker to reach the object of the moisture of drying in tire base, baker temperature controls at 200 DEG C;
(2) tire base is through preimpregnation oil sump, soaks into and extracts tire base, and preimpregnation oil temperature controls at 200 DEG C;
(3) after tire base is soaked into completely by being coated with oil sump, be coated in by meltable type high performance modified bitumen by the tire base that soaks into, the painting oil temperature of meltable type high performance modified bitumen controls at 190 DEG C;
(4) pass through thickness measuring roller after applying modified pitch, after reaching desired thickness, enter water bed cooling;
(5) upper surface modified pitch requires to be cooled to 100 DEG C, and lower surface modified pitch requires to be cooled to 80 DEG C;
(6) upper and lower surface is all adhered to the meltable type OPP barrier film of upper thermal sensitivity, and use knurling rolls compacting.
(7) making it cool by stopping frame, then entering coiling machine and carrying out batching, packing.
3, meltable type high performance elastomer modified asphalt waterproof coiled material construction temperature
Meltable type high performance elastomer modified asphalt waterproof coiled material lower surface adopts thermal sensitivity OPP film, and fusing point is only 500 ~ 600 DEG C.When adopting hot melt application mode to carry out hot melt to it, make modified pitch sizing material melt required flame envelope temperature completely and be only 700 ~ 800 DEG C.
4, waterproof roll typical case detected value
The detection method adopted is GB/T328-2007, GB18242-2008, examine index and all to meet and higher than GB18242-2008 standard-required.
Claims (8)
1. a meltable type high performance elastomer modified asphalt waterproof coiled material, it is characterized in that, described coiled material is followed successively by the meltable type OPP barrier film of thermal sensitivity from top to bottom, meltable type elastomer modified asphalt, polyester blank, meltable type elastomer modified asphalt and the meltable type OPP barrier film of thermal sensitivity.
2. meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 1, is characterized in that, described polyester plies is grammes per square metre is 200g/m
2~ 250g/m
2, thickness is 1.2 ~ 1.6mm.
3. meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 2, it is characterized in that, the material of described polyester plies is selected from multi-functional polyester non-woven fabric.
4. meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 1, is characterized in that, the meltable type separating film layer of described thermal sensitivity is the OPP barrier film of fusing point 500 ~ 600 DEG C, and thickness is 0.008mm ~ 0.015mm.
5. meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 1, is characterized in that, described meltable type high-performance elastic modified asphalt is made up of the raw material of following weight proportion:
6. meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 5, is characterized in that, described meltable type high-performance elastic modified asphalt is made up of the raw material of following weight proportion:
7. the meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 5 or 6, it is characterized in that, described asphalt is naphthene crude oils bitumen A level, and needle penetration is 70 ~ 200, in 0.1mm; Described bitumen is the natural rock asphalt or natural lake asphalt that asphaltenes is relatively high; Described softening agent is one or more mixtures subtracting line machine oil, furfural extract oil, naphthenic oil, aromatic naphtha and contain in low-molecular-weight aromatic cosolvent; Described elastomer modifier is line style and one or more mixtures of star-like styrene-butadiene block copolymer; Other modifier described is one or more mixtures in butadiene-styrene rubber, butadiene rubber, EP rubbers and neoprene; Described flexibilizer is one or more mixtures in ACM, chlorosulfonated polyethylene, ABS flexibilizer, polyvinyl butyral resin, polyvinyl acetate; Described antiaging agent is one or more mixtures in phenyl salicytate, Ultraviolet Absorber UV-P, UV-O, UV-531, light stabilizer GW-540, sulphur, sulfurous organic compound and organic peroxide; Described filler is one or more mixtures in precipitated calcium carbonate, powdered whiting and talcum powder; Described thickener is natural clay, diatomite, Magnesiumaluminumsilicate, one or more mixtures in bentonite and attapulgite.
8. meltable type high performance elastomer modified asphalt waterproof coiled material according to claim 7, it is characterized in that, described asphalt is cycloalkyl virgin petroleum pitch, and needle penetration is 220 ~ 260, in 0.1mm; Described bitumen is natural lake asphalt; Elastomer modifier is star-shaped sbs; Other modifier be butadiene-styrene rubber, butadiene rubber and EP rubbers and in the mixture of arbitrarily both or three; Described flexibilizer is the mixture of ACM, chlorosulfonated polyethylene; Described antiaging agent is light stabilizer GW-540 and/or organic peroxide; Described filler is powdered whiting and talcous mixture; Described thickener is bentonite or attapulgite.
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| CN105131622A (en) * | 2015-09-30 | 2015-12-09 | 河北伦特石油化工有限公司 | Rubber powder modified asphalt and production method thereof |
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| CN106515115A (en) * | 2016-11-23 | 2017-03-22 | 咸阳东方雨虹建筑材料有限公司 | Anti-aging elastomer-modified asphalt waterproof rolling material |
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| CN108729561A (en) * | 2018-05-31 | 2018-11-02 | 南京金洋防水工程有限公司 | A kind of SBS modified asphalt waterproof coiled materials and its processing technology |
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| CN111101658A (en) * | 2019-12-27 | 2020-05-05 | 唐山东方雨虹防水技术有限责任公司 | Modified asphalt waterproof coiled material and preparation method thereof |
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| CN102746517A (en) * | 2012-08-01 | 2012-10-24 | 株洲时代电气绝缘有限责任公司 | Luminescent colored bitumen emulsion and preparation method thereof |
| CN104210170A (en) * | 2014-09-11 | 2014-12-17 | 锦州东方雨虹建筑材料有限责任公司 | Self-adhesive waterproof asphalt coil material |
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| CN109177392A (en) * | 2018-08-15 | 2019-01-11 | 马鞍山市永固防水科技有限公司 | A kind of temperature variation resistant waterproof material |
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Effective date of registration: 20171225 Address after: 063300, Rong Sheng street, Fengnan Industrial Zone, Fengnan District, Hebei, Tangshan City, 18 Co-patentee after: Huizhou Dongfang Yuhong Building Materials Co., Ltd. Patentee after: TANGSHAN DONGFANG YUHONG WATERPROOF TECHNOLOGY CO., LTD. Address before: 063300, Rong Sheng street, Fengnan Industrial Zone, Fengnan District, Hebei, Tangshan City, 18 Patentee before: TANGSHAN DONGFANG YUHONG WATERPROOF TECHNOLOGY CO., LTD. |
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Effective date of registration: 20190417 Address after: 063300 No. 18 Rongsheng Street, Coastal Industrial Zone, Fengnan District, Tangshan City, Hebei Province Co-patentee after: Huizhou Dongfang Yuhong Building Materials Co., Ltd. Patentee after: TANGSHAN DONGFANG YUHONG WATERPROOF TECHNOLOGY CO., LTD. Co-patentee after: Hangzhou Oriental Yuhong building materials Co. Ltd. Address before: 063300 No. 18 Rongsheng Street, Coastal Industrial Zone, Fengnan District, Tangshan City, Hebei Province Co-patentee before: Huizhou Dongfang Yuhong Building Materials Co., Ltd. Patentee before: TANGSHAN DONGFANG YUHONG WATERPROOF TECHNOLOGY CO., LTD. |
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