CN104862126A - Environment-friendly flame-retardant solvent cleaner and preparation method thereof - Google Patents
Environment-friendly flame-retardant solvent cleaner and preparation method thereof Download PDFInfo
- Publication number
- CN104862126A CN104862126A CN201510268196.7A CN201510268196A CN104862126A CN 104862126 A CN104862126 A CN 104862126A CN 201510268196 A CN201510268196 A CN 201510268196A CN 104862126 A CN104862126 A CN 104862126A
- Authority
- CN
- China
- Prior art keywords
- solvent
- cleaning
- retardant
- cleaner
- mixture
- 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.)
- Granted
Links
Landscapes
- Detergent Compositions (AREA)
Abstract
The invention discloses an environment-friendly flame-retardant solvent cleaner. The solvent cleaner comprises a main cleaning agent, an azeotropic solvent and an auxiliary cleaning agent, wherein the main cleaning agent is any one of or a mixture of two of 1,1,2,2,3-pentafluoropropane, perfluoroether and propyl bromide; the azeotropic solvent is a mixture of any two of absolute ethyl alcohol, isopropyl alcohol and n-butyl alcohol; the auxiliary cleaning agent is any one of or a mixture of two of ethylene glycol monomethyl ether, ethylene glycol monoethyl ether and diethylene glycol monomethyl ether; the cleaner comprises, in percentage by weight, 50%-65% of the main cleaning agent, 10%-25% of the azeotropic solvent and 15%-30% of the auxiliary cleaning agent. The invention further provides a preparation method of the environment-friendly flame-retardant solvent cleaner. The solvent cleaner has high cleaning capability and good cleaning effect, is flame-retardant, non-toxic and odorless, cannot pollute the environment or the atmosphere and is a real flame-retardant and environment-friendly industrial cleaner.
Description
Technical field
The present invention relates to chemical field, particularly relate to organic compound, particularly solvent, particularly a kind of environmental-protection flame-retardant solvent cleaner and preparation method thereof.
Background technology
Environment protection and product safety are the two principal themes that world today's product uses, pay attention to by increasing country.And in industrialized production, cleaning is indispensable process procedure in carrying out processing, assemble, store and keep in repair.Because the turnout of every profession and trade is quite large, therefore to the workload of this kind of cleaning and the usage quantity of clean-out system also quite large, thus cause a large amount of discharges of discarded clean-out system, what now commercially solvent cleaner commonly used is not fire-retardant agent for carbon hydrogen detergent and halohydrocarbon clean-out system, some has also applied for patent of invention, and what all adopt as 200810168534.X and 200710151158.9 is exactly carbon element clean-out system.Agent for carbon hydrogen detergent subject matter is that cleaning force is poor, inflammable and explosive, uses dangerous, and metal parts surface easily dissolvent residual.And although halohydrocarbon clean-out system uses than carbon element clean-out system safety, cleaning performance is also better than agent for carbon hydrogen detergent, but halohydrocarbon clean-out system is harmful to environment and human body, as representative products methylene dichloride, trieline and zellon, not only destroy atmospheric ozone layer, and can be harmful to human body psychiatric system and skin, existing majority state in the world expressly prohibits the use, and these two kinds of products are seriously not suitable with market development demand.Therefore research and develop this environmental-protection flame-retardant solvent cleaner to be just quite necessary, and there is wide market application foreground.
Summary of the invention
The object of the present invention is to provide a kind of environmental-protection flame-retardant solvent cleaner, described this environmental-protection flame-retardant solvent cleaner to solve clean-out system of the prior art not fire-retardant, use dangerous, easily to the technical problem of human body and environmental pollution.
This environmental-protection flame-retardant solvent cleaner of the present invention, by cleaning host, azeotropic solvent, cleaning additive forms, described cleaning host is 1, 1, 2, 2, 3-pentafluoropropane, the mixture of any one or two kinds in perfluor ether or n-Propyl Bromide, described azeotropic solvent is dehydrated alcohol, the mixture of any two kinds in Virahol or propyl carbinol, described cleaning additive is ethylene glycol monomethyl ether, the mixture of any one or two kinds in ethylene glycol ethyl ether or diethylene glycol dimethyl ether, the weight percent of described cleaning host is 50 ~ 65%, the weight percent of described azeotropic solvent is 10 ~ 25%, the weight percent of described cleaning additive is 15% ~ 30%.
Present invention also offers the preparation method of above-mentioned environmental-protection flame-retardant solvent cleaner, cleaning host is taken according to weight percent, azeotropic solvent, cleaning additive, then in a reactor, add cleaning host and azeotropic solvent, temperature controls at 145 DEG C ~ 165 DEG C, mixing speed is 90 ~ 120r/min, pressure-controlling is at 2 ~ 3KG/ square centimeter, reaction times is 120min ~ 150min, 50 ~ 65 DEG C are reduced the temperature to after question response is even, pressure release is to standard atmospheric pressure, add cleaning additive again, temperature controls at 75 DEG C ~ 95 DEG C, mixing speed is 60 ~ 90r/min, pressure-controlling is at 1.5 ~ 2KG/ square centimeter, reaction times is 100min ~ 120min, to be mixed evenly after, cooling pressure release can obtain this product.
The present invention adopts cleaning host and azeotropic solvent, react under certain temperature, pressure, speed conditions, through certain reaction times, generate the nontoxic fire-retardant azeotropic compound of a kind of binary, this azeotropic compound product boiling point 82 ± 2 DEG C, initial boiling point 86 ± 2 DEG C, do 112 ± 2 DEG C, volatile performance is better than trieline, and safety non-toxic, then by azeotropic compound and cleaning additive compound, in specific temperature, pressure, speed conditions complex reaction, by the regular hour, generate a kind of solvent cleaner of environmental protection flame retardant.
Advantage of the present invention is as follows:
1. be issued to desirable cleaning performance in the condition of room temperature, have strong detergency, cleaning performance is better than agent for carbon hydrogen detergent and halohydrocarbon clean-out system.
2. fire-retardant, the anti-riot superior performance of this product, safe and reliable, is greatly better than agent for carbon hydrogen detergent and halohydrocarbon clean-out system.
3. this product can also reduce the corrodibility to equipment, should not be got rusty by clean metal part.
4. cleaning equipment is simple and convenient, may be used for soaking and washing and ultrasonic cleaning.
5. product cleaning is applied widely, is applicable to the cleaning of auto parts machinery, bearing, rubber, electronic product etc.
6. product does not remain, and cleaning is simple, and clean-out system is recycled well.
7. product is really accomplished fire-retardant, nontoxic, tasteless, is convenient to the emission treatment of discarded clean-out system, and automatic degradation capability is strong, environmentally safe.
The present invention compares with prior art, and its effect is actively and significantly, and the present invention really accomplishes fire-retardant, nontoxic, tasteless, to environment and air pollution-free, be a kind of real anti-flaming environment-friendly industrial cleaning agent.
Embodiment:
Embodiment 1
A kind of environmental-protection flame-retardant solvent cleaner of the present invention, is made up of cleaning host, azeotropic solvent, cleaning additive.The weight percent of described cleaning host is 57%, the weight percent of described azeotropic solvent is 23%, the weight percent of described cleaning additive is 20%.
Have, described cleaning host is 1,1,2,2,3-pentafluoropropane.
Have, described azeotropic solvent is the mixture of dehydrated alcohol, Virahol two kinds.
Have, described cleaning additive is the mixture of ethylene glycol monomethyl ether and diethylene glycol dimethyl ether two kinds.
Present invention also offers the preparation method of above-mentioned environmental-protection flame-retardant solvent cleaner, it is characterized in that: taking cleaning host according to weight percent is 1,1,2, the mixture that 2,3-pentafluoropropane, azeotropic solvent are dehydrated alcohol, the mixture of Virahol two kinds, cleaning additive are ethylene glycol monomethyl ether and diethylene glycol dimethyl ether two kinds.Then one can heat, can carrying capacity, add cleaning host and azeotropic solvent in adjustable speed reactor, temperature controls at 150 DEG C, mixing speed is 115r/min, pressure-controlling is at 3KG/ square centimeter, reaction times is 140min, 55 DEG C are reduced the temperature to after question response is even, pressure release is to standard atmospheric pressure, add cleaning additive again, temperature controls at 80 DEG C, and mixing speed is 65r/min, pressure-controlling is at 1.8KG/ square centimeter, reaction times is 100minmin, to be mixed evenly after, cooling pressure release can obtain this product.
Every physical and chemical index is shown in Table 1.
Embodiment 2
A kind of environmental-protection flame-retardant solvent cleaner of the present invention, is characterized in that being made up of cleaning host, azeotropic solvent, cleaning additive.The weight percent of described cleaning host is 55%, the weight percent of described azeotropic solvent is 20%, the weight percent of described cleaning additive is 25%.
Have, described cleaning host is the mixture of perfluor ether and n-Propyl Bromide two kinds.
Have, described azeotropic solvent is the mixture of dehydrated alcohol and propyl carbinol two kinds.
Have, described cleaning additive is ethylene glycol ethyl ether.
Present invention also offers the preparation method of above-mentioned environmental-protection flame-retardant solvent cleaner, it is characterized in that: take that cleaning host is the mixture of perfluor ether and n-Propyl Bromide two kinds according to weight percent, the mixture of azeotropic solvent dehydrated alcohol and propyl carbinol two kinds, cleaning additive be ethylene glycol ethyl ether.Then one can heat, can carrying capacity, add cleaning host and azeotropic solvent in adjustable speed reactor, temperature controls at 155 DEG C, mixing speed is 110r/min, pressure-controlling is at 3KG/ square centimeter, reaction times is 135min, 55 DEG C are reduced the temperature to after question response is even, pressure release is to standard atmospheric pressure, add cleaning additive again, temperature controls at 80 DEG C, and mixing speed is 70r/min, pressure-controlling is at 1.8KG/ square centimeter, reaction times is 110min, to be mixed evenly after, cooling pressure release can obtain this product.
Every physical and chemical index is shown in Table 1.
Embodiment 3
A kind of environmental-protection flame-retardant solvent cleaner of the present invention, is characterized in that being made up of cleaning host, azeotropic solvent, cleaning additive.The weight percent of described cleaning host is 58%, the weight percent of described azeotropic solvent is 18%, the weight percent of described cleaning additive is 24%.
Have, described cleaning host is the mixture of 1,1,2,2,3-pentafluoropropane and two kinds, perfluor ether.
Have, described azeotropic solvent is the mixture of Virahol and propyl carbinol two kinds.
Have, described cleaning additive is the mixture of Virahol and propyl carbinol two kinds.
Present invention also offers the preparation method of above-mentioned environmental-protection flame-retardant solvent cleaner, it is characterized in that: taking cleaning host according to weight percent is 1,1,2, the mixture that the mixture that the mixture of 2,3-pentafluoropropane and two kinds, perfluor ether, azeotropic solvent are Virahol and propyl carbinol two kinds, cleaning additive are Virahol and propyl carbinol two kinds.Then one can heat, can carrying capacity, add cleaning host and azeotropic solvent in adjustable speed reactor, temperature controls at 155 DEG C, mixing speed is 100r/min, pressure-controlling is at 2.5KG/ square centimeter, reaction times is 135min, 60 DEG C are reduced the temperature to after question response is even, pressure release is to standard atmospheric pressure, add cleaning additive again, temperature controls at 90 DEG C, and mixing speed is 75r/min, pressure-controlling is at 1.6KG/ square centimeter, reaction times is 110min, to be mixed evenly after, cooling pressure release can obtain this product.
Every physical and chemical index is shown in Table 1.
Embodiment 4
A kind of environmental-protection flame-retardant solvent cleaner of the present invention, is characterized in that being made up of cleaning host, azeotropic solvent, cleaning additive.The weight percent of described cleaning host is 62%, the weight percent of described azeotropic solvent is 15%, the weight percent of described cleaning additive is 23%.
Have, described cleaning host is n-Propyl Bromide.
Have, described azeotropic solvent is the mixture of dehydrated alcohol and propyl carbinol two kinds.
Have, described cleaning additive is the mixture of ethylene glycol monomethyl ether and ethylene glycol ethyl ether two kinds.
Present invention also offers the preparation method of above-mentioned environmental-protection flame-retardant solvent cleaner, it is characterized in that: take according to weight percent the mixture that cleaning host is n-Propyl Bromide, the mixture of azeotropic solvent dehydrated alcohol and propyl carbinol two kinds, cleaning additive are ethylene glycol monomethyl ether and ethylene glycol ethyl ether two kinds.Then one can heat, can carrying capacity, add cleaning host and azeotropic solvent in adjustable speed reactor, temperature controls at 160 DEG C, mixing speed is 95r/min, pressure-controlling is at 2.5KG/ square centimeter, reaction times is 130min, 60 DEG C are reduced the temperature to after question response is even, pressure release is to standard atmospheric pressure, add cleaning additive again, temperature controls at 90 DEG C, and mixing speed is 80r/min, pressure-controlling is at 1.6K/ square centimeter G, reaction times is 120min, to be mixed evenly after, cooling pressure release can obtain this product.
Every physical and chemical index is shown in Table 1.
Table 1
As can be seen from above index, 4 example physical chemical index of the present invention are completely due to standard-required.
Product performance of the present invention and domestic and international similar-type products performance comparison are in table 2
Table 2
As can be seen from Table 2, example 4 indices of the present invention is all better than the index request of domestic similar-type products, especially particularly outstanding in flame retardant resistance (flash-point index) and biological degradation.Product index, close to foreign well-known enterprise like product index request, GWP and KB index will obviously be better than imported product requirement.
Beneficial effect of the present invention is: first, and product of the present invention is fire-retardant anti-riot, safe and reliable, does not have dissolvent residual on metal parts surface, improves the safety in use procedure and conforming product rate; Secondly, product of the present invention has really carried out environmental protection, and reclaiming product can degrade automatically, there is not the materials such as methylene dichloride, trieline and the zellon destroying atmospheric ozone layer; 3rd, product of the present invention is to human body without any harm, and use safety, solves product in the past and the person is produced to the problem of pungency destruction; 4th, product of the present invention has strong detergency, and cleaning performance is good, under the condition of room temperature, just can reach desirable cleaning performance, has saved use cost; 5th, during product of the present invention uses, volatilization is fast, does not remain, and cleaning is simple, and may be used for soaking and washing and ultrasonic cleaning, clean-out system is recycled well; 6th, product application scope of the present invention is wide, is widely used in the cleaning of auto parts machinery, bearing, electronic product and leather product.
Above-described is only one of them examples of implementation of the present invention, does not represent and does any pro forma restriction to technical scheme of the present invention.Every embodiments of the invention is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all fall within the scope of protection of the present invention.
Claims (2)
1. an environmental-protection flame-retardant solvent cleaner, it is characterized in that: by cleaning host, azeotropic solvent and cleaning additive composition, described cleaning host is 1, 1, 2, 2, 3-pentafluoropropane, the mixture of any one or two kinds in perfluor ether or n-Propyl Bromide, described azeotropic solvent is dehydrated alcohol, the mixture of any two kinds in Virahol or propyl carbinol, described cleaning additive is ethylene glycol monomethyl ether, the mixture of any one or two kinds in ethylene glycol ethyl ether or diethylene glycol dimethyl ether, in described clean-out system, the weight percent of described cleaning host is 50 ~ 65%, the weight percent of described azeotropic solvent is 10 ~ 25%, the weight percent of described cleaning additive is 15% ~ 30%.
2. prepare the method for environmental-protection flame-retardant solvent cleaner as claimed in claim 1 for one kind, it is characterized in that: take cleaning host according to weight percent, azeotropic solvent, cleaning additive, then in a reactor, add cleaning host and azeotropic solvent, temperature controls at 145 DEG C ~ 165 DEG C, mixing speed is 90 ~ 120r/min, pressure-controlling is at 2 ~ 3KG/ square centimeter, reaction times is 120min ~ 150min, 50 ~ 65 DEG C are reduced the temperature to after question response is even, pressure release is to standard atmospheric pressure, add cleaning additive again, temperature controls at 75 DEG C ~ 95 DEG C, mixing speed is 60 ~ 90r/min, pressure-controlling is at 1.5 ~ 2KG/ square centimeter, reaction times is 100min ~ 120min, to be mixed evenly after, cooling pressure release can obtain environmental-protection flame-retardant solvent cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268196.7A CN104862126B (en) | 2015-05-22 | 2015-05-22 | A kind of environmental-protection flame-retardant solvent cleaner and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268196.7A CN104862126B (en) | 2015-05-22 | 2015-05-22 | A kind of environmental-protection flame-retardant solvent cleaner and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104862126A true CN104862126A (en) | 2015-08-26 |
| CN104862126B CN104862126B (en) | 2017-07-18 |
Family
ID=53908312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510268196.7A Active CN104862126B (en) | 2015-05-22 | 2015-05-22 | A kind of environmental-protection flame-retardant solvent cleaner and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104862126B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088125A (en) * | 2019-12-31 | 2020-05-01 | 南京市检捷生物信息科技有限公司 | Cleaning agent for laboratory optical instrument and cleaning method thereof |
| CN112961733A (en) * | 2021-01-29 | 2021-06-15 | 中国人民解放军军事科学院防化研究院 | Environment-friendly nondestructive sensitive equipment disinfectant for toxic and harmful chemical substances |
| CN113637983A (en) * | 2021-08-12 | 2021-11-12 | 磁悬浮润滑油(苏州)有限公司 | Preparation method of environment-friendly metal flame-retardant solvent cleaning agent |
| CN115896800A (en) * | 2022-12-05 | 2023-04-04 | 中国工程物理研究院材料研究所 | Cleaning agent and application and recovery method thereof in metal cleaning |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054793A (en) * | 1990-03-12 | 1991-09-25 | 纳幕尔杜邦公司 | Dichloro pentafluoropropane and anti-form-1, the ternary azeotropic composition of 2-Ethylene Dichloride and methyl alcohol or ethanol or Virahol |
| CN1078257A (en) * | 1992-04-27 | 1993-11-10 | 联合信号股份有限公司 | 1,1,2,3, the azeotropic shape composition of 3-pentafluoropropane |
| CN1445352A (en) * | 2002-10-16 | 2003-10-01 | 杭州贝尔通讯系统有限公司 | Cleaning agent for electronics equipments |
| CN101982544A (en) * | 2010-11-04 | 2011-03-02 | 西北工业大学 | Electrical equipment cleaning agent and preparation method |
| CN102304443A (en) * | 2011-08-01 | 2012-01-04 | 合肥华清金属表面处理有限责任公司 | Environmental-protection low-sensitization low-toxicity industrial cleaning agent |
| CN102851151A (en) * | 2012-09-25 | 2013-01-02 | 深圳市唯特偶新材料股份有限公司 | Environment-friendly cleaning agent for electronic industry |
-
2015
- 2015-05-22 CN CN201510268196.7A patent/CN104862126B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054793A (en) * | 1990-03-12 | 1991-09-25 | 纳幕尔杜邦公司 | Dichloro pentafluoropropane and anti-form-1, the ternary azeotropic composition of 2-Ethylene Dichloride and methyl alcohol or ethanol or Virahol |
| CN1078257A (en) * | 1992-04-27 | 1993-11-10 | 联合信号股份有限公司 | 1,1,2,3, the azeotropic shape composition of 3-pentafluoropropane |
| CN1445352A (en) * | 2002-10-16 | 2003-10-01 | 杭州贝尔通讯系统有限公司 | Cleaning agent for electronics equipments |
| CN101982544A (en) * | 2010-11-04 | 2011-03-02 | 西北工业大学 | Electrical equipment cleaning agent and preparation method |
| CN102304443A (en) * | 2011-08-01 | 2012-01-04 | 合肥华清金属表面处理有限责任公司 | Environmental-protection low-sensitization low-toxicity industrial cleaning agent |
| CN102851151A (en) * | 2012-09-25 | 2013-01-02 | 深圳市唯特偶新材料股份有限公司 | Environment-friendly cleaning agent for electronic industry |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088125A (en) * | 2019-12-31 | 2020-05-01 | 南京市检捷生物信息科技有限公司 | Cleaning agent for laboratory optical instrument and cleaning method thereof |
| CN112961733A (en) * | 2021-01-29 | 2021-06-15 | 中国人民解放军军事科学院防化研究院 | Environment-friendly nondestructive sensitive equipment disinfectant for toxic and harmful chemical substances |
| CN113637983A (en) * | 2021-08-12 | 2021-11-12 | 磁悬浮润滑油(苏州)有限公司 | Preparation method of environment-friendly metal flame-retardant solvent cleaning agent |
| CN115896800A (en) * | 2022-12-05 | 2023-04-04 | 中国工程物理研究院材料研究所 | Cleaning agent and application and recovery method thereof in metal cleaning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104862126B (en) | 2017-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104862126A (en) | Environment-friendly flame-retardant solvent cleaner and preparation method thereof | |
| CN102433226B (en) | Cleaning agent for clearing away resins and soldering | |
| CN109880432A (en) | Dedicated anti-welding green paint stripper of Halogen pcb board and the preparation method and application thereof | |
| CN107488375B (en) | High-filling water-based transparent putty for woodware and preparation method thereof | |
| CN104086977A (en) | Preparation method of environment-friendly polyurethane plastic | |
| JP2010519403A (en) | Method of applying a non-volatile organic compound coating | |
| CN104804902A (en) | Environment-friendly type electrified cleaning agent for multifunctional communication network equipment and preparation method | |
| CN104098950A (en) | Glass optical lens paint remover and its preparation and use methods | |
| CN104560426A (en) | Environment-friendly degradable cleaning agent and preparation process thereof | |
| CN107022431B (en) | Industrial cleaning agent and preparation method thereof | |
| CN111826021B (en) | Organic gel for removing polyacrylic resin on surface of mural based on nano calcium hydroxide and preparation method thereof | |
| CN112029408A (en) | Environment-friendly waterproof coating and preparation method thereof | |
| CN103237878A (en) | Use of mixtures for removing polyurethanes from metal surfaces | |
| CN112759272B (en) | Anti-dazzle glass water-based frosting powder and application thereof in anti-dazzle glass frosting processing | |
| CN109705995A (en) | A kind of cleaning agent of low toxic and environment-friendly | |
| CN103966766A (en) | Anti-static inflaming retarding non-woven fabric material for sound absorbing cotton | |
| CN107739560B (en) | The environmental protection coating material and preparation method and its application method of a kind of laser cutting | |
| JP2006257445A (en) | Method for producing tetramethylbiphenyl type epoxy resin having low organic halogen content | |
| CN110724451A (en) | Self-flame-retardant waterborne polyurethane industrial wood paint | |
| KR102291015B1 (en) | Vehicle descaling composition and its manufacturing method | |
| CN108676630A (en) | A kind of washing agent for electronic materials | |
| JP2000256502A (en) | Processing liquid for foamed polystyrene | |
| CN103525168A (en) | Cleaning agent of printing ink and preparation method thereof | |
| CN103756812B (en) | Non-inflammable uniform environment-friendly glass clean preservative | |
| CN110484377B (en) | UV resin cleaning agent and preparation process and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Environment-friendly flame-retardant solvent cleaner and preparation method thereof Effective date of registration: 20190903 Granted publication date: 20170718 Pledgee: Anxin Agricultural Insurance Co., Ltd. Shanghai Minhang Branch Co. Pledgor: SHANGHAI ZHONGFU SPECIAL OIL Co.,Ltd. Registration number: Y2019980000101 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201021 Granted publication date: 20170718 Pledgee: Anxin Agricultural Insurance Co., Ltd. Shanghai Minhang Branch Co. Pledgor: SHANGHAI ZHONGFU SPECIAL OIL Co.,Ltd. Registration number: Y2019980000101 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201823 No. 2122, Waiqian Road, Jiading District, Shanghai Patentee after: Shanghai Zhongfu Oil Group Co.,Ltd. Address before: 201823 No. 2122, Waiqian Road, Jiading District, Shanghai Patentee before: SHANGHAI ZHONGFU SPECIAL OIL Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |