CN1279127C - Water paint for protecting surface of car and household electrical apparats - Google Patents
Water paint for protecting surface of car and household electrical apparats Download PDFInfo
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- CN1279127C CN1279127C CN 200410016797 CN200410016797A CN1279127C CN 1279127 C CN1279127 C CN 1279127C CN 200410016797 CN200410016797 CN 200410016797 CN 200410016797 A CN200410016797 A CN 200410016797A CN 1279127 C CN1279127 C CN 1279127C
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Abstract
The present invention relates to the field of paint industry, particularly to aqueous surface protection paint for automobiles and households. The present invention is prepared from aqueous resin emulsion which is composed of 70 to 85 portions of acrylic resin, 10 to 25 portions of acrylic modified resin and 5 to 10 portions of epoxy resin, 1 to 3.5 portions of reinforcing agents, 1 to 3 portions of thixotropic agents, and 1 to 4 portions of film forming agents according to proportion by weight, wherein the reinforcing agents are silicon dioxide with the particle diameter below 15 micrometers; the thixotropic agents are cellulose class compounds with the molecular weight of 1500 to 6000; the film forming agents are formed from one or two of ethylene glycol and propylene glycol. The present invention has the advantages of proper strength, hardness, flexibility and elongation. The present invention has no adverse effect on the surface performance of the paint coating originally coated on automobiles, household electric appliances, etc., and performs good protection function.
Description
Technical field:
The present invention relates to the coating industry field, especially a kind of automobile of water-based and household electrical appliances surface protection coating.
Background technology:
Present automobile and household electrical appliances, particularly automobile, in storage, transportation, tend to occur following problem: in the parking lot in the open, because rainwater, particularly acid rain, humidity and sun-exposed etch, can make paint coating loss of gloss, variable color occur, crackle, phenomenon such as come off, peel off and wear out.Storing fouls such as dust in the transportation, dust, greasy dirt, impression of the hand can severe contamination car surface coating, even can catch variegatedly, makes car load cause outmoded sensation, influence attractive in appearance and sale.Scuffing in storage, the transportation, scratch make surface quality descend, and serious will causing reprocessed, and increase cost.For this reason, each automaker is taken place in order to prevent above-mentioned phenomenon both at home and abroad, adopt the method for pasting senior kraft paper or specialty films on the surface to carry out surface protection, but this method has a lot of defectives.Secondly at first inapplicable secular outdoor open parking ground environment is easy to lose protectiveness because of strong wind blows off in transit.All adopt this method and similar way at present both at home and abroad.So far still there are not other better ways can carry out automobile, the surface protection of household electrical appliances effectively.
Summary of the invention:
The object of the present invention is to provide a kind of aqueous automobile and home appliance surface protective cover, this a kind of waterborne surface protective paint for car and electrical home appliance is filmed and is had suitable intensity, hardness, snappiness and elongation.Paint coating surface property after original applications such as automobile, household electrical appliances is had no adverse effects and can play a good protection.
Technical scheme of the present invention is:
A kind of waterborne surface protective paint for car and electrical home appliance; its weight proportion is: the resin aqueous emulsion of being made up of acrylic resin 70-85 part, acrylic acid modified resin 10-25 part, Resins, epoxy 5-10 part; toughener 1-3.5 part; thixotropic agent 1-3 part; membrane-forming agent 1-4 part; wherein toughener is the silicon-dioxide of particle diameter below 15um, and thixotropic agent is that molecular weight is the cellulose compound of 1500-6000, and membrane-forming agent is any one or two kinds in ethylene glycol, the propylene glycol.
More excellent technical scheme of the present invention is:
A kind of waterborne surface protective paint for car and electrical home appliance, this coating are by 70～80 parts of acrylic resins, 10～20 parts of styrene acrylic modified resins, the resin aqueous emulsion of 5～8 parts of compositions of Resins, epoxy.And an amount of toughener, thixotropic agent, membrane-forming agent.
A kind of waterborne surface protective paint for car and electrical home appliance, cellulose compound are any one in carboxymethyl cellulose, Natvosol, methylcellulose gum, the Vltra tears.
A kind of waterborne surface protective paint for car and electrical home appliance, acrylic acid modified resin are that styrene-acrylonitrile copolymer acid modified resin, epoxy ester are acrylic resin modified, in the acrylic acid modified alkyd resin, aminoacrylic acid modified alkyd resin any one.
A kind of waterborne surface protective paint for car and electrical home appliance also is added with silicone antifoam agent 0.1-1.5 part.
Waterborne surface protective paint for car and electrical home appliance of the present invention, its physicochemical property parameter is: tensile strength: 35～75Mpa; Elongation: 70～200%; Peeling force: 55～100 Newton/meter; Shore hardness: 70～90; Build: 〉=0.2mm; Snappiness: 180 ° of foldings are scratched and are not occurred fracture for 10 times.Above technical parameter coating within the specific limits just has good automobile and household electrical appliances surface protection function.Can replace the paster guard method.
The invention has the advantages that:
The paint coating surface property of coating after to original applications such as automobile, household electrical appliances not only do not have any detrimentally affect but also can play fabulous provide protection.Coating can be from doing, also can drying about 100 ℃.Build can reach more than 0.2 millimeter.Can effectively prevent to scratch, abrade.Paint coatings has certain suitable sticking power to automobile, the former application coatingsurface of household electrical appliances, in use can not come off, peel off, but when needed, during as sale, exhibition, displaying, can peel off very easily by hand, show the brilliance of original application coating.Film have certain intensity, hardness, snappiness and elongation.That the dry film coating has is water-fast preferably, the stability of oil resistant, weathering resistance and high and low temperature.Coating application method can be regulated with spraying or brushing, working viscosity.The dry film coating shape that is translucent can be known the color of seeing former application coating fully.The present invention can replace the method for present car surface paster protection, is used for automobile manufacture industry.Also can be used for the household electrical appliances surface protection.
Description of drawings
Fig. 1 is technological process of production figure of the present invention.
Embodiment:
Embodiment 1
A kind of waterborne surface protective paint for car and electrical home appliance; by 85 parts of acrylic resins, 25 parts of styrene-acrylonitrile copolymer acid modified resins, 10 parts of resin aqueous emulsions of forming of Resins, epoxy; 3.5 parts of tougheners; 3 parts of thixotropic agent; 4 parts of membrane-forming agents; wherein: toughener is the silicon-dioxide of particle diameter at 15um, and thixotropic agent is that molecular weight is 1500 carboxymethyl cellulose, and membrane-forming agent is a propylene glycol.
Embodiment 2
A kind of waterborne surface protective paint for car and electrical home appliance; by 70 parts of acrylic resins, 10 parts of styrene-acrylonitrile copolymer acid modified resins, 5 parts of resin aqueous emulsions of forming of Resins, epoxy; 1 part of toughener; 1 part of thixotropic agent; 1 part of membrane-forming agent; wherein: toughener is the silicon-dioxide of particle diameter at 12um, and thixotropic agent is that molecular weight is 1900 methylcellulose gum, and membrane-forming agent is an ethylene glycol.Also be added with 0.1 part of silicone antifoam agent.
Embodiment 3
A kind of waterborne surface protective paint for car and electrical home appliance; by 78 parts of acrylic resins, styrene-acrylonitrile copolymer acid modified resin or other acrylic resin modified 15 parts, 8 parts of resin aqueous emulsions of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter at 10um, thixotropic agent is that molecular weight is 6000 Natvosol; membrane-forming agent specifically consists of 1 part of ethylene glycol, 2 parts of propylene glycol.Also be added with 1.5 parts of silicone antifoam agents.
Embodiment 4
A kind of waterborne surface protective paint for car and electrical home appliance; by 78 parts of acrylic resins, 15 parts of styrene-acrylonitrile copolymer acid modified resins, 8 parts of resin aqueous emulsions of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter below 5um, thixotropic agent is that molecular weight is 4000 Vltra tears; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Also be added with 0.5 part of silicone antifoam agent.
Silicone antifoam agent is a proven technique, and a lot of producers all can provide, Guangdong Biomax Si ﹠ F Fine Chemical Co., Ltd. for example, Shaoxin City's applied chemistry institute, companies such as Huaiyin Sail defoamer company limited.
Because this coating is acrylic resin modified based on acrylic resin, styrene-acrylonitrile copolymer acid modified resin or other, is water-borne coatings, use the time standby 10 parts of pure water as solvent, organic solvent-free.The nonpollution environment problem belongs to feature of environmental protection coating when therefore constructing.
This method for producing paint is as follows:
At first starting material such as acrylic resin, styrene-acrylonitrile copolymer acid modified resin, Resins, epoxy, toughener, thixotropic agent, membrane-forming agent and pure water are carried out checking before the starting material warehouse-in.Treat every physics and chemistry testing data routinely after the passed examination warehouse-in standby.Earlier to acrylic resin, styrene-acrylonitrile copolymer acid modified resin, Resins, epoxy mixing stirring, toughener, thixotropic agent, membrane-forming agent are added disperse respectively to stir behind the pure water and dissolving is stirred simultaneously, above-mentioned various former material use quantities are by the weighing of prescription regulation.In dissolving with after being uniformly dispersed it is joined in the resin emulsion, mix stirring again, carry out scalping then and filter, the elimination big particle carries out the coating final inspection this moment.After every technical indicator meets the requirements, pack, warehouse-in, the technological process of production see accompanying drawing.
To be applied to automobile and household electrical appliances surface protection by the water-borne coatings that above-mentioned manufacture method obtains.Spraying immediately or brushing one deck protective cover after automobile, the application of household electrical appliances outside surface, or after general assembly, spray, brush.This coating can protect automobile, household electrical appliances to exempt from the damage to former application top coat that produces because of a variety of causes in assembling, storage, the transportation, when sale by the time or payment user use, peels off protective cover by hand.Can make the vehicle appliance surface to the end with brand-new state protection.
With the above-mentioned waterborne surface protective paint for car and electrical home appliance that obtains by manufacture method, performance is as follows:
Tensile strength: 65Mpa presses the GB528-81 method and detects.
Elongation: 120%.
Peeling force: 86 Newton/meter, press the GB2792-81 method and detect.
Snappiness: 180 ° of foldings fracture do not occur around 10 times.
Dry film intensity: 0.2 millimeter.
Shao Er hardness: 85 press the G531-81 method detects.
Above technical parameter coating within the specific limits just has good automobile and household electrical appliances surface protection function.Can replace the paster guard method.
The low effect that all influences coating of parameters Tai Gaotai.
For example peeling force is too big, is difficult to coating is peeled off, and influences the final use of automobile, household electrical appliances, and peeling force is too little, and coating is difficult for attached to automobile, household electrical appliances surface.
The too high then poor in flexibility of hardness; Hardness is too low, and insufficient strength is disconnected once drawing.
Ratio between acrylic resin, styrene-acrylonitrile copolymer acid modified resin, the Resins, epoxy will be coordinated.
Embodiment 5
A kind of aqueous automobile and family expenses surface protection coating; by 78 parts of acrylic resins, 15 parts of styrene-acrylonitrile copolymer acid modified resins, 8 parts of water-base resins of forming of Resins, epoxy; 2 parts of thixotropic agent; 3 parts of membrane-forming agents; wherein: thixotropic agent is that molecular weight is 6000 Vltra tears; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Also be added with 0.5 part of silicone antifoam agent.All the other are with embodiment 4.
Because the toughener of the silicon-dioxide that no 15um is following, Shao Er hardness is 44, and tensile strength is 22Mpa, and the barrier propterty of coating is undesirable.
Embodiment 6
A kind of aqueous automobile and family expenses surface protection coating; by 78 parts of acrylic resins, 15 parts of styrene-acrylonitrile copolymer acid modified resins, 8 parts of water-base resins of forming of Resins, epoxy; 2 parts of tougheners; 3 parts of membrane-forming agents; wherein: toughener is the silicon-dioxide of particle diameter below 10um; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Also be added with 0.5 part of silicone antifoam agent.All the other are with embodiment 4.
Because no thixotropic agent, coating trickling performance is undesirable, when using present embodiment coating, the sagging phenomenon can occur.
Embodiment 7
A kind of aqueous automobile and family expenses surface protection coating; by 68 parts of acrylic resins, 15 parts of styrene-acrylonitrile copolymer acid modified resins, 28 parts of water-base resins of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter below 10um, thixotropic agent is that molecular weight is 1800 Vltra tears; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Also be added with 0.5 part of silicone antifoam agent.All the other are with embodiment 4.
Resins, epoxy is too many, acrylic resin very little, peeling force is greater than 145 Newton/meter, coating very difficulty is peeled off, influence is used.
Embodiment 8
A kind of aqueous automobile and family expenses surface protection coating; by 70 parts of acrylic resins, 35 parts of styrene-acrylonitrile copolymer acid modified resins, 8 parts of water-base resins of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter below 10U, thixotropic agent is that molecular weight is 1600 Vltra tears; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Also be added with 0.5 part of silicone antifoam agent.All the other are with embodiment 4.
Acrylic resin is too many, Shao Er hardness: 35, and hardness is too low, and coating is difficult to play the effect of protection automobile, household electrical appliances.
Embodiment 9
A kind of waterborne surface protective paint for car and electrical home appliance; by 82 parts of acrylic resins, 22 parts of styrene-acrylonitrile copolymer acid modified resins, 6 parts of resin aqueous emulsions of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter below 5um, thixotropic agent is that molecular weight is 3500 methylcellulose gum; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Use the time standby 8 parts of pure water as solvent, all the other are with embodiment 4.
Tensile strength: 55Mpa presses the GB528-81 method and detects.
Elongation: 120%.
Peeling force: 73 Newton/meter, press the GB2792-81 method and detect.
Snappiness: 180 ° of foldings fracture do not occur around 10 times.
Dry film intensity: 0.25 millimeter.
Shao Er hardness: 90 press the G531-81 method detects
Embodiment 10
A kind of waterborne surface protective paint for car and electrical home appliance; by 77 parts of acrylic resins, 16 parts of styrene-acrylonitrile copolymer acid modified resins, 6 parts of resin aqueous emulsions of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter below 5um, thixotropic agent is that molecular weight is 3500 methylcellulose gum; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Use the time standby 15 parts of pure water as solvent, all the other are with embodiment 4.
Tensile strength: 45Mpa presses the GB528-81 method and detects.
Elongation: 85%.
Peeling force: 85 Newton/meter, press the GB2792-81 method and detect.
Snappiness: 180 ° of foldings fracture do not occur around 10 times.
Dry film intensity: 0.22 millimeter.
Shao Er hardness: 70 press the G531-81 method detects.
Embodiment 11
A kind of waterborne surface protective paint for car and electrical home appliance; by 80 parts of acrylic resins, 20 parts of styrene-acrylonitrile copolymer acid modified resins, 5 parts of resin aqueous emulsions of forming of Resins, epoxy; 2 parts of tougheners; 2 parts of thixotropic agent; 3 parts of membrane-forming agents, wherein: toughener is the silicon-dioxide of particle diameter below 5um, thixotropic agent is that molecular weight is 3500 methylcellulose gum; membrane-forming agent specifically consists of 2 parts of ethylene glycol, 1 part of propylene glycol.Use the time standby 25 parts of pure water as solvent, all the other are with embodiment 4.
Tensile strength: 35Mpa presses the GB528-81 method and detects.
Elongation: 195%.
Peeling force: 100 Newton/meter, press the GB2792-81 method and detect.
Snappiness: 180 ° of foldings fracture do not occur around 10 times.
Dry film intensity: 0.22 millimeter.
Shao Er hardness: 82 press the G531-81 method detects.
Embodiment 12
Acrylic resin modified 20 parts of epoxy ester, all the other are with embodiment 4.
Embodiment 13
Acrylic resin modified 15 parts of epoxy ester, all the other are with embodiment 4.
Embodiment 14
Acrylic resin modified 25 parts of epoxy ester, all the other are with embodiment 4.
Embodiment 15
Acrylic resin modified 22 parts of epoxy ester, all the other are with embodiment 4.
Embodiment 16
20 parts of acrylic acid modified alkyd resins, all the other are with embodiment 4.
Embodiment 17
15 parts of acrylic acid modified alkyd resins, all the other are with embodiment 4.
Embodiment 18
25 parts of acrylic acid modified alkyd resins, all the other are with embodiment 4.
Embodiment 19
15 parts of aminoacrylic acid modified alkyd resins, all the other are with embodiment 4.
Embodiment 20
20 parts of aminoacrylic acid modified alkyd resins, all the other are with embodiment 4.
Embodiment 21
25 parts of aminoacrylic acid modified alkyd resins, all the other are with embodiment 4.
Acrylic acid modified resin in the foregoing description is that styrene-acrylonitrile copolymer acid modified resin, epoxy ester are acrylic resin modified, in the acrylic acid modified alkyd resin in the acrylic acid modified alkyd resin, aminoacrylic acid modified alkyd resin any one, is water-base resin.Also be conventional starting material, for example all can be on Qingdao of Shandong province Jinhu County road No. 4 " marine chemical industry institute " obtain above-mentioned all acrylic acid modified resins.
Claims (10)
1, a kind of waterborne surface protective paint for car and electrical home appliance; its weight proportion is: the resin aqueous emulsion of being made up of acrylic resin 70-85 part, acrylic acid modified resin 10-25 part, Resins, epoxy 5-10 part; toughener 1-3.5 part; thixotropic agent 1-3 part; membrane-forming agent 1-4 part; it is characterized in that: toughener is the silicon-dioxide of particle diameter below 15um, and thixotropic agent is that molecular weight is the cellulose compound of 1500-6000, and membrane-forming agent is any one or two kinds in ethylene glycol, the propylene glycol.
2, a kind of waterborne surface protective paint for car and electrical home appliance according to claim 1 is characterized in that: this coating is by 70～80 parts of acrylic resins, 10～20 parts of styrene acrylic modified resins, the resin aqueous emulsion of 5～8 parts of compositions of Resins, epoxy.
3, a kind of waterborne surface protective paint for car and electrical home appliance according to claim 1 is characterized in that: cellulose compound is any one in carboxymethyl cellulose, Natvosol, methylcellulose gum, the Vltra tears.
4, a kind of waterborne surface protective paint for car and electrical home appliance according to claim 1 is characterized in that: acrylic acid modified resin is that styrene-acrylonitrile copolymer acid modified resin, epoxy ester are acrylic resin modified, in the acrylic acid modified alkyd resin, aminoacrylic acid modified alkyd resin any one.
5, the coating that forms according to claim 1,2,3,4 described any one waterborne surface protective paint for car and electrical home appliance is characterized in that its physicochemical property parameter is: tensile strength: 35～75Mpa.
6, the coating that forms according to claim 1,2,3,4 described any one waterborne surface protective paint for car and electrical home appliance is characterized in that its physicochemical property parameter is: elongation: 70～200%.
7, the coating that forms according to claim 1,2,3,4 described any one waterborne surface protective paint for car and electrical home appliance is characterized in that its physicochemical property parameter is: peeling force: 55～100 Newton/meter.
8, the coating that forms according to claim 1,2,3,4 described any one waterborne surface protective paint for car and electrical home appliance is characterized in that its physicochemical property parameter is: shore hardness: 70～90.
9, the coating that forms according to claim 1,2,3,4 described any one waterborne surface protective paint for car and electrical home appliance is characterized in that its physicochemical property parameter is: build: 〉=0.2mm.
10, the coating that forms according to claim 1,2,3,4 described any one waterborne surface protective paint for car and electrical home appliance, it is characterized in that its physicochemical property parameter is: snappiness: 180 ° of foldings are scratched and are not occurred fracture for 10 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016797 CN1279127C (en) | 2004-03-05 | 2004-03-05 | Water paint for protecting surface of car and household electrical apparats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016797 CN1279127C (en) | 2004-03-05 | 2004-03-05 | Water paint for protecting surface of car and household electrical apparats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560152A CN1560152A (en) | 2005-01-05 |
| CN1279127C true CN1279127C (en) | 2006-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410016797 Expired - Fee Related CN1279127C (en) | 2004-03-05 | 2004-03-05 | Water paint for protecting surface of car and household electrical apparats |
Country Status (1)
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| CN (1) | CN1279127C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104768B (en) * | 2007-04-06 | 2010-10-06 | 刘成金 | Highlight water-based automobile paint |
| CN101139499B (en) * | 2007-10-29 | 2010-10-13 | 姚海军 | Aqueous automobile framework and automobile motorcycle wheel surface protection coating |
| CN102060970B (en) * | 2010-10-27 | 2013-01-02 | 中国科学院长春应用化学研究所 | Method for preparing waterborne resin, and waterborne coating composition |
| CN103113799A (en) * | 2012-12-25 | 2013-05-22 | 王娟 | Luminescent dial paint |
| CN103113794A (en) * | 2012-12-26 | 2013-05-22 | 王娟 | Shatter-resistant coating material for automobiles |
| CN103436120B (en) * | 2013-08-07 | 2016-07-06 | 山东奔腾漆业股份有限公司 | A kind of aqueous alkide resin modified acrylic acid emulsion metallic paint and preparation method thereof |
| CN106221340A (en) * | 2016-08-12 | 2016-12-14 | 安庆市七仙女电器制造有限公司 | A kind of electric iron anticorrosive coating and preparation method thereof |
| CN106590232A (en) * | 2016-12-22 | 2017-04-26 | 安徽乐金环境科技有限公司 | Electric appliance coating material based on polyvinyl acetate emulsion and preparation method of electric appliance coating material |
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2004
- 2004-03-05 CN CN 200410016797 patent/CN1279127C/en not_active Expired - Fee Related
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| CN1560152A (en) | 2005-01-05 |
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Owner name: XU HOUXUN Free format text: FORMER NAME OR ADDRESS: XU HOUXUN METALLURGICAL DEPARTMENT |
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Address after: 200129, room 58, No. 172, Lane 201, metalworking Road, Shanghai, Pudong New Area Patentee after: Xu Houxun Address before: 333002 109 mailbox, 50 cent box Metallurgy Office, Jingdezhen, Jiangxi Patentee before: Xu Houxun |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Kansai Automotive Coatings CO., Ltd. Assignor: Xu Houxun Contract fulfillment period: 2007.12.18 to 2012.12.17 contract change Contract record no.: 2008430000067 Denomination of invention: Water paint for protecting surface of car and household electrical apparats Granted publication date: 20061011 License type: Exclusive license Record date: 20081230 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.18 TO 2012.12.17; CHANGE OF CONTRACT Name of requester: HUNAN XIANGJIANGGUANXI COATING CO., LTD. Effective date: 20081230 |
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Granted publication date: 20061011 Termination date: 20130305 |