CN102796450A - Exterior color-mixed nylon powder coating and preparation method thereof - Google Patents
Exterior color-mixed nylon powder coating and preparation method thereof Download PDFInfo
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- CN102796450A CN102796450A CN201210267626XA CN201210267626A CN102796450A CN 102796450 A CN102796450 A CN 102796450A CN 201210267626X A CN201210267626X A CN 201210267626XA CN 201210267626 A CN201210267626 A CN 201210267626A CN 102796450 A CN102796450 A CN 102796450A
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Abstract
The invention discloses an exterior color-mixed nylon powder coating and a preparation method thereof, belonging to the field of preparation of nylon powder coatings. The exterior color-mixed nylon powder coating is formed by mixing nylon powder, pigments and auxiliaries, and the weight ratio of the nylon powder to the pigments to the auxiliaries is 100:(0.1-15):(0.01-15). The preparation method comprises the following steps: firstly, heating the nylon powder with the need of color mixing to 45-60 DEG C through a high-speed mixing machine, then adding the pigments and the auxiliaries according to the weight ratio, performing high-speed mixing, and adhering the pigments to nylon powder particles to prepare the exterior color-mixed nylon powder coating of a target color. According to the preparation method of the exterior color-mixed nylon powder coating, disclosed by the invention, adverse factors of color mixing of a traditional process are overcome, and the preparation method has the advantages of simplicity, easiness in operation, fast color-mixing speed, convenience in cleaning, mass production and test sample preparation; and the prepared exterior color-mixed nylon powder coating has the advantages of uniform color dispersion, dense and firm coating and good using performances.
Description
Technical field
The present invention relates to the powder coating technical field, be specifically related to a kind of outer toning Nylon powder coating(s) and preparation method thereof.
Background technology
Nylon powder coating(s) has the processing temperature scope of wide journey, good wear resistance and lower frictional coefficient and the characteristics such as bounding force good with metallic substance, is widely used in fields such as chemical industry, electronics, machinery, automotive industry.Simultaneously as a kind of thermoplastic powder, have the resource of saving, easy to be recycled and be convenient to advantage such as repairing, become the kind that has development prospect in the powder coating.
Nylon powder coating(s) is originally as white or Natural color, and color is dull, for satisfying the actual application need of every profession and trade, can realize the color variation of Nylon powder coating(s) through adding a certain amount of pigment.In conjunction with the production technique of Nylon powder coating(s), the Nylon powder coating(s) and preparation method thereof of mixing colours at present mainly contains following two kinds: solvent method with extrude modification-deep cooling comminuting method.The former is with nylon resin, pigment, filler and various properties-correcting agent, drops in the dissolution kettle, adds solvent, and HTHP is dissolving down, after cooling, step-down, crystallisation by cooling is separated out, and technologies such as separation, oven dry make nylon powder.The latter is with nylon resin, pigment, filler and various properties-correcting agent, mixes through high-speed mixer, adopts forcing machine to extrude, and oven dry utilizes the deep cooling kibbler that the nylon resin particle is pulverized then, after oven dry, sub-sieve promptly get the nylon powder finished product.Above-mentioned two kinds of technologies are when the Nylon powder coating(s) of processing different colours; Pigment very easily adheres to equipment such as dissolution kettle, forcing machine, deep cooling kibbler, vibratory screening apparatus; Bring difficulty for the cleaning of these equipment of later stage; And the waste great amount of manpower and material resources, also can cause the crossed contamination of Nylon powder coating(s) different colours in addition, can cause bigger influence to the toning even the performance of product.
Traditional simple outer toning technology is that pigment is directly mixed with resin, although operation is short; Cost is low, but the resin coating irregular colour is even, and tinting strength is poor; The uniform coloring property and the quality stability of powder coating are relatively poor; Exist pigment and powder coating to be prone to layering, decolouring, be unfavorable for defectives such as levelling, influenced the use range of Nylon powder coating(s).
Summary of the invention
The object of the invention is to overcome that existing outer toning Nylon powder coating(s) irregular colour is even, tinctorial quality is poor, pigment and the easy stratified shortcoming of powder coating; The Nylon powder coating(s) of a kind of color even, strong coloring force, difficult decolouring is provided, the use range that helps to improve the functional quality of Nylon powder coating(s) and enlarge Nylon powder coating(s).
Another object of the present invention provides the preparation method of above-mentioned outer toning Nylon powder coating(s).
The technical solution that realizes the object of the invention is:
The present invention's Nylon powder coating(s) of mixing colours outward forms by nylon powder, pigment and auxiliary agent are mixing, and the weight ratio of nylon powder, pigment and auxiliary agent is 100:0.1～15:0.01～15.
Nylon powder of the present invention is nylon 1212, nylon 1010, nylon 1012,, one or more the mixture in the NYLON610, nylon 612; Described nylon powder is white or Natural color.
Pigment of the present invention is mineral dye, or the mixing of mineral dye and pigment dyestuff, and the particle diameter of mineral dye is less than 15 μ m; Described mineral dye is one or more combinations in carbon black, titanium oxide, red iron oxide, chrome yellow, the titanium nickel yellow; Preferred carbon black, titanium oxide, chrome yellow.Described pigment dyestuff is phthalocyanine blue, the phthalocyanine green of phthalocyanines, the Pigment red 202 of quinacridine ketone, the Pigment red 179 of perylene system, the pigment orange 68 of benzimidazoles, one or more combinations in the pigment brown 25; Preferred phthalocyanine pigment.
Auxiliary agent of the present invention is one or more combinations in polyethylene micropowder wax, calcium stearate, Zinic stearas, the Magnesium Stearate; The preferably polyethylene micro mist wax.
Mix colours the outward preparation method of Nylon powder coating(s) of the present invention specifically may further comprise the steps:
1) nylon powder is dropped into high-speed mixer, the sealing back is opened and is stirred, and rotating speed is controlled at 50～2000 rev/mins, utilizes the self-friction heat of material or the auxiliary heat of high-speed mixer that material is heated to 45～60 ℃ of temperature, stops to stir;
2) by weight adding aim colour pigment, auxiliary agent;
3) in high-speed mixer, continue to mix, 50～2000 rev/mins of control rotating speeds stirred 1～10 minute;
4) discharging is cooled to normal temperature with material, and outer toning Nylon powder coating(s) gets product.
The present invention compared with prior art has following beneficial effect: it is raw material that the present invention mainly adopts nylon powder; Utilize high-speed mixer that nylon powder is heated with stirring to it more than second-order transition temperature; Add pigment and auxiliary agent again; Continue control rotating speed and churning time, obtain the finished product Nylon powder coating(s) of mixing colours outward.Prepared outer toning Nylon powder coating(s) color divergence is even, and the coating compact and firm has good use properties.Because used preparation method need not nylon is heated to melt temperature, can effectively reduce pigment degraded at high temperature, prolong the work-ing life of nylon powder, also can enlarge the variety range of the used pigment of nylon simultaneously.The auxiliary agent that is added has wetting divergent function, can effectively improve dispersiveness and the tinctorial strength of pigment in nylon powder, solves pigment in the toning process and end powder is easily separated, the problem of decolouring and leveling characteristics difference, but the improvement processed-type.The preparation method who is adopted in addition has the following advantages: (1) whole toning process is simple; (2) to the replacing of different batches pigment, have colour changing characteristics fast; (3) toning equipment convenience for washing.
Description of drawings
Fig. 1 is the schematic flow sheet of a kind of outer toning preparation method of nylon powder coating of the present invention.
Embodiment
Below further specify the present invention through specific embodiment.But the detail of embodiment only is used to explain the present invention, should not be construed as the qualification to the total technical scheme of the present invention.
Embodiment 1
A kind of outer toning Nylon powder coating(s) as shown in Figure 1 and preparation method thereof, its step is following:
1) 50 kilograms of water white transparency nylon 1012 modified powders with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 1000 rev/mins, when temperature of charge rises to 45 ℃, stops to stir;
2) take by weighing pigment 100 grams, selected pigment is the carbon black in the mineral dye, particle diameter 10～20 nanometers.Take by weighing auxiliary agent 20 grams, selected auxiliary agent is a polyethylene micropowder wax; Pigment and auxiliary agent are added in the high-speed mixer;
3) continue to open stirring, 1000 rev/mins of rotating speeds stirred 1 minute;
4) discharging is cooled to normal temperature with material, promptly gets black nylon powder coating finished product.
Embodiment 2
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of usefulness are extruded the water white transparency nylon 1212 powder input high-speed mixer that modification-deep cooling disintegrating process prepares, sealing is opened and is stirred, and stirring velocity is controlled at 1200 rev/mins, when temperature of charge rises to 50 ℃, stops stirring;
2) take by weighing pigment 500 grams, selected pigment is the titanium oxide in the mineral dye, particle diameter 200～400 nanometers, and selected pigment dyestuff is the phthalocyanine blue of phthalocyanines, the weight ratio of titanium oxide and phthalocyanine blue is 4:1.Take by weighing auxiliary agent 50 grams, selected auxiliary agent is a polyethylene micropowder wax;
3) continue to open stirring, 1200 rev/mins of rotating speeds stirred 2 minutes;
4) discharging is cooled to normal temperature with material, promptly gets blue Nylon powder coating(s) finished product.
Embodiment 3
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of water white transparency nylon 1012 powder with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 900 rev/mins, when temperature of charge rises to 45 ℃, stops to stir;
2) take by weighing pigment 60 grams, selected pigment is titanium oxide and the carbon black in the mineral dye, does not add organic pigment, and titanium oxide and sooty weight ratio are 1:5, and particle diameter is respectively 200～400 nanometers and 10～20 nanometers.Take by weighing auxiliary agent 20 grams, selected auxiliary agent is a polyethylene micropowder wax;
3) continue to open stirring, 900 rev/mins of rotating speeds stirred 3 minutes;
4) discharging is cooled to normal temperature with material, promptly gets grey nylon powder coating finished product.
Embodiment 4
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of water white transparency nylon 1010 powder with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 800 rev/mins, when temperature of charge rises to 45 ℃, stops to stir;
2) take by weighing pigment 400 grams, selected pigment is titanium oxide and the carbon black in the mineral dye, does not add organic pigment, and titanium oxide and sooty weight ratio are 3:1, and particle diameter is respectively 200～400 nanometers and 10～20 nanometers.Take by weighing auxiliary agent 40 grams, selected auxiliary agent is polyethylene micropowder wax and Zinic stearas, and weight ratio is 1:1;
3) continue to open stirring, 800 rev/mins of rotating speeds stirred 4 minutes;
4) discharging is cooled to normal temperature with material, promptly gets light grey Nylon powder coating(s) finished product.
Embodiment 5
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of usefulness are extruded the water white transparency nylon 612 powder input high-speed mixer that modification-deep cooling disintegrating process prepares, sealing is opened and is stirred, and stirring velocity is controlled at 1200 rev/mins, when temperature of charge rises to 60 ℃, stops stirring;
2) take by weighing pigment 85 grams; Selected pigment is carbon black and the chrome yellow in the mineral dye; Particle diameter is respectively 10～20 nanometers and 800～1200 nanometers, and selected pigment dyestuff is the phthalocyanine blue and the phthalocyanine green of phthalocyanines, and wherein wt is than being carbon black: chrome yellow: phthalocyanine blue: phthalocyanine green=3:10:2:2.Take by weighing auxiliary agent 20 grams, selected auxiliary agent is a polyethylene micropowder wax;
Step 3: continue to open and stir, 1200 rev/mins of rotating speeds stirred 3 minutes;
Step 4: discharging, material is cooled to normal temperature, promptly get deep green Nylon powder coating(s) finished product.
Embodiment 6
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) what use solvent method preparation is that the mixed powder of nylon 1012 and the nylon 1010 of 1:1 drops into high-speed mixer according to weight ratio with 50 kilograms, and sealing is opened and stirred, and stirring velocity is controlled at 50 rev/mins, when temperature of charge rises to 50 ℃, stops to stir;
2) take by weighing pigment 50 grams, selected pigment is the red iron oxide in the mineral dye, and particle diameter is 80～150 nanometers.Selected pigment dyestuff is the Pigment red 202 of quinacridine ketone, and wherein wt is than being red iron oxide: Pigment red 202=1:1.Take by weighing auxiliary agent 5 grams, selected auxiliary agent is a polyethylene micropowder wax;
3) continue to open stirring, 50 rev/mins of rotating speeds stirred 10 minutes;
4) discharging is cooled to normal temperature with material, promptly gets red Nylon powder coating(s) finished product.
Embodiment 7
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of water white transparency NYLON610 powder with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 1000 rev/mins, when temperature of charge rises to 60 ℃, stops to stir;
2) take by weighing pigment 129 grams, selected pigment is carbon black and the titanium oxide in the mineral dye, and particle diameter is respectively 10～20 nanometers and 200～400 nanometers.Selected pigment dyestuff is the phthalocyanine blue and the phthalocyanine green of phthalocyanines, and wherein wt is than being carbon black: titanium oxide: phthalocyanine blue: phthalocyanine green=12:100:12:5.Take by weighing auxiliary agent 50 grams, selected auxiliary agent is a polyethylene micropowder wax;
3) continue to open stirring, 1000 rev/mins of rotating speeds stirred 5 minutes;
4) discharging is cooled to normal temperature with material, promptly gets mazarine Nylon powder coating(s) finished product.
Embodiment 8
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of water white transparency nylon 612 powder with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 1200 rev/mins, when temperature of charge rises to 60 ℃, stops to stir;
2) take by weighing pigment 115 grams, selected pigment is the titanium oxide in the mineral dye, and particle diameter is 200～400 nanometers.Selected pigment dyestuff is the phthalocyanine blue and the phthalocyanine green of phthalocyanines, and wherein wt is than being titanium oxide: phthalocyanine blue: phthalocyanine green=20:2:1.Take by weighing auxiliary agent 20 grams, selected auxiliary agent is a polyethylene micropowder wax;
3) continue to open stirring, 1200 rev/mins of rotating speeds stirred 3 minutes;
4) discharging is cooled to normal temperature with material, promptly gets light blue Nylon powder coating(s) finished product.
Embodiment 9
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) what use solvent method preparation is that the mixed powder of nylon 612 and the NYLON610 of 1:1 drops into high-speed mixer according to weight ratio with 50 kilograms, and sealing is opened and stirred, and stirring velocity is controlled at 2000 rev/mins, when temperature of charge rises to 60 ℃, stops stirring;
2) take by weighing 7.5 kilograms of pigment, selected pigment is the titanium oxide in the mineral dye, and particle diameter is 200～400 nanometers.Selected pigment dyestuff is the pigment orange 68 of benzimidazoles, and wherein wt is than being titanium oxide: pigment orange 68=1:2.Take by weighing 7.5 kilograms of auxiliary agents, selected auxiliary agent is polyethylene micropowder wax and Zinic stearas, and weight ratio is 2:1;
3) continue to open stirring, 2000 rev/mins of rotating speeds stirred 2 minutes;
4) discharging is cooled to normal temperature with material, promptly gets orange Nylon powder coating(s) finished product.
Embodiment 10
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of nylon 1012 powder with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 500 rev/mins, when temperature of charge rises to 50 ℃, stops to stir;
2) take by weighing pigment 400 gram, selected pigment is the titanium oxide in the mineral dye, particle diameter 200～400 nanometers, and selected pigment dyestuff is the Pigment red 179 of perylene system, and the weight ratio of titanium oxide and Pigment red 179 is 1:7.Take by weighing auxiliary agent 50 grams, selected auxiliary agent is polyethylene micropowder wax and calcium stearate, and weight ratio is 3:2;
3) continue to open stirring, 500 rev/mins of rotating speeds stirred 8 minutes;
4) discharging is cooled to normal temperature with material, promptly gets red Nylon powder coating(s) finished product.
Embodiment 11
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of nylon 1012 powder with the solvent method preparation are dropped into high-speed mixer, sealing is opened and is stirred, and stirring velocity is controlled at 500 rev/mins, when temperature of charge rises to 50 ℃, stops to stir;
2) take by weighing pigment 450 grams, selected pigment is the titanium oxide in the mineral dye, particle diameter 200～400 nanometers, and selected pigment dyestuff is the pigment brown 25 of benzimidazoles, the weight ratio of titanium oxide and pigment brown 25 is 1:8.Take by weighing auxiliary agent 60 grams, selected auxiliary agent is polyethylene micropowder wax and Magnesium Stearate, and weight ratio is 5:1;
3) continue to open stirring, 1000 rev/mins of rotating speeds stirred 3 minutes;
4) discharging is cooled to normal temperature with material, promptly gets brown Nylon powder coating(s) finished product.
Embodiment 12
A kind of outer toning Nylon powder coating(s) of the present invention and preparation method thereof, its step is following:
1) 50 kilograms of usefulness are extruded the water white transparency nylon 1212 powder input high-speed mixer that modification-deep cooling disintegrating process prepares, sealing is opened and is stirred, and stirring velocity is controlled at 1200 rev/mins, when temperature of charge rises to 50 ℃, stops stirring;
2) take by weighing pigment 800 grams, selected pigment is the titanium nickel yellow in the mineral dye.Take by weighing auxiliary agent 80 grams, selected auxiliary agent is a polyethylene micropowder wax;
3) continue to open stirring, 1200 rev/mins of rotating speeds stirred 4 minutes;
4) discharging is cooled to normal temperature with material, promptly gets yellow Nylon powder coating(s) finished product.
Claims (10)
1. outer toning Nylon powder coating(s), it is characterized in that: form by nylon powder, pigment and auxiliary agent are mixing, the weight ratio of nylon powder, pigment and auxiliary agent is 100:0.1～15:0.01～15.
2. outer toning Nylon powder coating(s) according to claim 1 is characterized in that described nylon powder is one or more combinations in nylon 1212, nylon 1010, nylon 1012, NYLON610, the nylon 612.
3. outer toning Nylon powder coating(s) according to claim 1 is characterized in that described auxiliary agent is one or more combinations in polyethylene micropowder wax, calcium stearate, Zinic stearas, the Magnesium Stearate.
4. outer toning Nylon powder coating(s) according to claim 1 is characterized in that described pigment is mineral dye, or the mixing of mineral dye and pigment dyestuff, and the particle diameter of mineral dye is less than 15 microns.
5. outer toning Nylon powder coating(s) according to claim 2 is characterized in that described nylon powder is white or Natural color.
6. outer toning Nylon powder coating(s) according to claim 4 is characterized in that described mineral dye is one or more combinations in carbon black or the oxide-based pigment.
7. outer toning Nylon powder coating(s) according to claim 4 is characterized in that described pigment dyestuff is the phthalocyanine blue, phthalocyanine green, the Pigment red 202 of quinacridine ketone, the Pigment red 179 of perylene system, the pigment orange 68 of benzimidazoles, one or more combinations in the pigment brown 25 of phthalocyanines.
8. outer toning Nylon powder coating(s) according to claim 6 is characterized in that described oxide-based pigment is titanium oxide, red iron oxide, chrome yellow, titanium nickel yellow.
9. the preparation method of outer toning Nylon powder coating(s) according to claim 1 is characterized in that may further comprise the steps:
(1) nylon powder is dropped into high-speed mixer, the sealing back is opened and is stirred, and rotating speed is controlled at 50～2000 rev/mins, utilizes the self-friction heat of material or the auxiliary heat of high-speed mixer that material is heated to 45～60 ℃ of temperature, stops to stir;
(2) by weight adding aim colour pigment, auxiliary agent;
(3) in high-speed mixer, continue to mix, 50～2000 rev/mins of control rotating speeds stirred 1～10 minute;
(4) discharging is cooled to normal temperature with material, and outer toning Nylon powder coating(s) gets product.
10. the preparation method of outer toning Nylon powder coating(s) according to claim 9 is characterized in that, described weight ratio, and promptly the weight ratio of nylon powder, pigment and auxiliary agent is 100:0.1～15:0.01～15.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436047A (en) * | 2013-08-05 | 2013-12-11 | 宁波龙欣精细化工有限公司 | Novel bisazo methenyl nickel complexing solvent dye containing benzimidazolone ring, and preparation method and application of complexing solvent dye |
| CN104387956A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Anti-slip wear-resistant automobile powder coating with high adhesive force |
| CN111675962A (en) * | 2020-06-04 | 2020-09-18 | 广州鸿为新材料科技有限公司 | Special nylon powder for spherical anti-loosening screws and preparation method thereof |
| CN112358807A (en) * | 2020-12-09 | 2021-02-12 | 深圳市贝尔新材料科技有限公司 | Nylon powder coating capable of achieving external color matching and production device |
| CN115521590A (en) * | 2022-10-26 | 2022-12-27 | 浙江鲨威新材料科技有限公司 | Color matching production process of vehicle body film |
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| CN101096561A (en) * | 2006-06-30 | 2008-01-02 | 天津市振东涂料有限公司 | Preparation method of nylon powder coating on metal surface |
| KR20110108107A (en) * | 2010-03-26 | 2011-10-05 | 코오롱플라스틱 주식회사 | Polyamide resin composition |
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| CN101096561A (en) * | 2006-06-30 | 2008-01-02 | 天津市振东涂料有限公司 | Preparation method of nylon powder coating on metal surface |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103436047A (en) * | 2013-08-05 | 2013-12-11 | 宁波龙欣精细化工有限公司 | Novel bisazo methenyl nickel complexing solvent dye containing benzimidazolone ring, and preparation method and application of complexing solvent dye |
| CN104387956A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Anti-slip wear-resistant automobile powder coating with high adhesive force |
| CN111675962A (en) * | 2020-06-04 | 2020-09-18 | 广州鸿为新材料科技有限公司 | Special nylon powder for spherical anti-loosening screws and preparation method thereof |
| CN112358807A (en) * | 2020-12-09 | 2021-02-12 | 深圳市贝尔新材料科技有限公司 | Nylon powder coating capable of achieving external color matching and production device |
| CN115521590A (en) * | 2022-10-26 | 2022-12-27 | 浙江鲨威新材料科技有限公司 | Color matching production process of vehicle body film |
| CN115521590B (en) * | 2022-10-26 | 2023-11-24 | 浙江鲨威新材料科技有限公司 | Color mixing production process of car body film |
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| CN102796450B (en) | 2015-04-15 |
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Inventor after: Hang Zusheng Inventor after: Zhang Shiqing Inventor after: Zhu Junwu Inventor after: Zhang Chunxiang Inventor after: Han Bing Inventor after: Wang Zhangzhong Inventor after: Tian Jiaqiang Inventor after: Pan Wubin Inventor after: Feng Zhiming Inventor after: Yu Lei Inventor before: Zhang Chunxiang Inventor before: Han Bing Inventor before: Wang Zhangzhong Inventor before: Tian Jiaqiang Inventor before: Pan Wubin Inventor before: Feng Zhiming |
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Effective date of registration: 20171012 Address after: 242000 Anhui Province, Xuancheng economic and Technological Development Zone, the new road in the south, Bai Jian Road West Patentee after: Xuancheng Hui Yuan Mstar Technology Ltd Address before: 1 No. 211167 Jiangsu province south of Nanjing city Jiangning Science Park Avenue hirokage Patentee before: Nanjing Institute of Technology |
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