CN1699381A - Hydroxy ethylidene diphosphonic acid with content of greater than or equal to 90 percent and process for making same - Google Patents
Hydroxy ethylidene diphosphonic acid with content of greater than or equal to 90 percent and process for making same Download PDFInfo
- Publication number
- CN1699381A CN1699381A CN 200510039287 CN200510039287A CN1699381A CN 1699381 A CN1699381 A CN 1699381A CN 200510039287 CN200510039287 CN 200510039287 CN 200510039287 A CN200510039287 A CN 200510039287A CN 1699381 A CN1699381 A CN 1699381A
- Authority
- CN
- China
- Prior art keywords
- diphosphonic acid
- hydroxy ethylene
- ethylene diphosphonic
- solid
- content
- 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
- 238000000034 method Methods 0.000 title claims abstract description 11
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 title abstract 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims abstract description 11
- 239000001632 sodium acetate Substances 0.000 claims abstract description 11
- 235000017281 sodium acetate Nutrition 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- VPTUPAVOBUEXMZ-UHFFFAOYSA-N (1-hydroxy-2-phosphonoethyl)phosphonic acid Chemical compound OP(=O)(O)C(O)CP(O)(O)=O VPTUPAVOBUEXMZ-UHFFFAOYSA-N 0.000 claims description 67
- 238000005516 engineering process Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 9
- 238000006297 dehydration reaction Methods 0.000 claims description 9
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- CJIGZMWMKFQIQB-UHFFFAOYSA-N OC=C.OP(=O)OP(O)=O Chemical class OC=C.OP(=O)OP(O)=O CJIGZMWMKFQIQB-UHFFFAOYSA-N 0.000 claims description 3
- 238000007601 warm air drying Methods 0.000 claims description 3
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012856 packing Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Abstract
The invention discloses a hydroxy ethylidene diphosphonic acid (HEDP) with content of greater than or equal to 90 percent and process for preparation, wherein the product comprises (by weight percentage) 1-Hydroxyethylidene-1,1-diphosphonic acid 90-98%, unavoidable impurity substance 1-2%, and balancing water. The preparing process comprises the steps of stock preparation, charging sodium acetate as crystal nucleon, agitating, charging anhydrous alcohol as crystallizing aid agent, dewatering, and drying.
Description
Technical field
The present invention relates to the hydroxy ethylene diphosphonic acid and the reparation technology thereof of a kind of content 〉=90%, belong to chemical technology field.
Background technology
Hydroxy ethylene diphosphonic acid involved in the present invention is a 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, and its english abbreviation is HEDP, and its structural formula is:
Hydroxy ethylene diphosphonic acid is a kind of corrosion inhibiting and descaling agent that is widely used in many water treatments such as oilfield water extraction, steam turbine cooling circulating water, also is a kind of intermediate of the chelated dispersants of printing and dyeing.
At present existing is the production method of two hydroxy ethylene diphosphonic acids of CN1418883A such as Chinese patent Granted publication 1043044C and publication number, and the content of the hydroxy ethylene diphosphonic acid of prepared hydroxy ethylene diphosphonic acid solution is all below 50%.High-content is the hydroxy ethylene diphosphonic acid of content 〉=90% for example, market supply is not only arranged so far as yet, and do not see that report is arranged.
Because hydroxy ethylene diphosphonic acid solution is the alleged liquid hydroxy ethylene diphosphonic acid of the present invention, big and the rig-site utilization of storage and capacity consumption is difficult to the deficiency of all many-sides such as controlling in existing packing difficulty, the circulation, and has caused very big waste to economic society.Economic society is being expected the appearance of the hydroxy ethylene diphosphonic acid of content 〉=90%.
Summary of the invention
The object of the present invention is to provide the hydroxy ethylene diphosphonic acid and the reparation technology thereof of a kind of content 〉=90%,, satisfy the demand of current economic society to overcome the deficiency of prior art.
The present invention realizes that the technical scheme of its purpose is, the hydroxy ethylene diphosphonic acid of a kind of content 〉=90% contains hydroxy ethylene diphosphonic acid, unavoidable impurities and water, and its innovation and creation point is: its composition weight percentage composition is:
Hydroxy ethylene diphosphonic acid 90～98%;
Unavoidable impurities 1～2%;
Water surplus.
Because the weight percentage of hydroxy ethylene diphosphonic acid of the present invention reaches more than 90%, thereby effectively overcome the deficiency of prior art, realized purpose of the present invention.
Physical form at normal temperatures is a solid.In fact, when the content of hydroxy ethylene diphosphonic acid reaches 90%, its physical form at normal temperatures must be solid, and this just helps the control of its packing, circulation and rig-site utilization more.
Physical form at normal temperatures is a blocks of solid, or particulate solid, or the blended solid of blocks of solid and particulate solid.Because the hydroxy ethylene diphosphonic acid of content of the present invention 〉=90% is to exist with xln, thereby its physical form mainly is mixed into the master with bulk or particulate state or block and particulate state, and this is for packing and rig-site utilization will be more favourable.This is that the present invention advocates.
The hydroxy ethylene diphosphonic acid of content as mentioned above 〉=90% or claim the reparation technology of solid-state hydroxy ethylene diphosphonic acid, or claim the technical though of the purifying technique of solid-state hydroxy ethylene diphosphonic acid, be the crystallization technique measure of taking liquid hydroxy ethylene diphosphonic acid, realize producing the purpose of solid-state hydroxy ethylene diphosphonic acid.Its reparation technology is particularly, and the reparation technology of the hydroxy ethylene diphosphonic acid of a kind of content 〉=90% is that 50%～60% hydroxy ethylene diphosphonic acid is a raw material with liquid weight percentage, carries out according to following steps successively:
(1) gets the raw materials ready, get a certain amount of liquid hydroxy ethylene diphosphonic acid with weighting method and insert in the container pending;
(2) add the nucleus sodium acetate;
(3) stir;
(4) add crystallization in motion agent dehydrated alcohol;
(5) dehydration;
(6) drying.
Can understand by above given said reparation technology, the present invention is owing to taked the technological process of secondary crystal, add dehydration and dry, thereby realized that effectively its contained hydroxy ethylene diphosphonic acid reaches 90%～98% purpose, and had the simple and convenient and low characteristics of production cost of technology.
The further inventive point of said reparation technology of the present invention also is:
The reparation technology of described hydroxy ethylene diphosphonic acid, when producing with the said liquid hydroxy ethylene diphosphonic acid on-line continuous of preparation, also be included in preceding cooling step, said is that said liquid hydroxy ethylene diphosphonic acid with online preparation is cooled in 10 ℃～60 ℃ scopes at preceding cooling step.Owing to taked in preceding cooling, and can produce with the liquid hydroxy ethylene diphosphonic acid on-line continuous of preparation content≤50%, that is to say, processing unit at the said liquid hydroxy ethylene diphosphonic acid of preparation, follow-uply add purifying technique equipment of the present invention, even if can the said solid-state hydroxy ethylene diphosphonic acid of production the present invention.Obvious like this equipment and the economic spending that can save said liquid hydroxy ethylene diphosphonic acid circulation process can also be saved relevant processing unit, thereby further be reduced production input of the present invention and production cost.
The add-on of said nucleus sodium acetate is 10～20ppm of the pending amount of said liquid hydroxy ethylene diphosphonic acid; The add-on of crystallization in motion agent anhydrous acetic acid is 20～30ppm of the pending amount of said liquid hydroxy ethylene diphosphonic acid.Consumption by sodium acetate that is added and dehydrated alcohol, can clearly find out, its consumption is seldom, with added sodium acetate and dehydrated alcohol is respectively 15ppm and 25ppm is an example, the hydroxy ethylene diphosphonic acid solution that every 1000kg is pending, added sodium acetate and dehydrated alcohol are respectively 15g and 25g.This not only since consumption seldom and its production cost is very low, and the environmental protection that it caused influence also is very micro-, its wastewater treatment is very easy to.
The manual stirring of the said stirring of the present invention system; Said processed is centrifuge dehydration; Said drying is a warm air drying, and its hot blast temperature is in 60 ℃～80 ℃ scopes.Certainly, said stirring should slowly be carried out along a direction, and observes its crystallization at any time and separate out situation; The centrifugal rotational speed of said centrifuge dehydration with middling speed for well, even if passable as the laundry machine dehydration rotating speed; The hot blast temperature of said warm air drying is controlled in 60 ℃～80 ℃ scopes, and takes the technical measures of logistics and distinguished and admirable relative movement, can reach dry like this and avoid melting, drying by the fire the withered purpose of promptly avoiding destroying crystal water.
After technique scheme of the present invention is implemented, the content height that the solid-state hydroxy ethylene diphosphonic acid of its finished product is had, pack simple and easy, characteristics such as circulation is convenient, and application controls is easy; Characteristics such as the simple and convenient and production cost of the technology that its reparation technology had is low all are conspicuous.
Embodiment
A kind of typical component weight percentage of finished product hydroxy ethylene diphosphonic acid of the present invention is:
Hydroxy ethylene diphosphonic acid 91%;
Unavoidable impurities 1.5%;
Water surplus.
Its physical form at normal temperatures is block and particulate state solid mixt.Its color is white or light beige.
Said unavoidable impurities mainly is existing such as its preparation raw materials used residue acetic acid, phosphorous acid and metal oxides such as calcium, magnesium or the like by its raw material liquid hydroxy ethylene diphosphonic acid.
The embodiment of the reparation technology of the hydroxy ethylene diphosphonic acid of content of the present invention 〉=90% is:
One of embodiment, a kind of reparation technology of hydroxy ethylene diphosphonic acid of content 91% is that 50% hydroxy ethylene diphosphonic acid is a raw material with the liquid weight percentage of city's confession, carries out according to following steps successively:
1, gets the raw materials ready, get the liquid hydroxy ethylene diphosphonic acid of 1000kg and insert reactor;
2, slowly add sodium acetate 15g;
3, stir.Forward slowly stir by hand, and observe its crystalline condition at any time;
4, slowly add dehydrated alcohol 25g, and slowly stir;
5, static 10～12 hours, dewater with centrifuge;
6, make reverse convection drying with the solid-state hydroxy ethylene diphosphonic acid after 70 ℃ of hot blasts and the dehydration, promptly make content and be 91% solid-state hydroxy ethylene diphosphonic acid product.
7, the back packing appears on the market after testing.
Two of embodiment, a kind of content are the reparation technology of 98% hydroxy ethylene diphosphonic acid, are that 60% liquid hydroxy ethylene diphosphonic acid is a raw material with the content of online preparation, carry out according to following steps successively:
1, cooling is cooled to 60 ℃.
2, get the raw materials ready, get the liquid hydroxy ethylene diphosphonic acid of 1000kg and insert reactor;
3, slowly add sodium acetate 20g;
4, stir, forward slowly stir by hand, and observe its crystalline condition at any time;
5, slowly add dehydrated alcohol 30g, and forward slowly stir;
6, static 10～12 hours, dewater with centrifuge;
7, make reverse convection drying with the solid-state hydroxy ethylene diphosphonic acid after 70 ℃ of hot blasts and the dehydration, promptly make content and be 98% solid-state hydroxy ethylene diphosphonic acid product.
8, the back packing appears on the market after testing.
The specific embodiment of the present invention, can be according to the desired content of its finished product hydroxy ethylene diphosphonic acid, adopt the hydroxy ethylene diphosphonic acid solution of different content, under the condition of plus-minus sodium acetate and dehydrated alcohol, carry out according to the said reparation technology of the present invention, and obtain the solid-state hydroxy ethylene diphosphonic acid product of content in 90～98% scopes.
Claims (7)
1, the hydroxy ethylene diphosphonic acid of a kind of content 〉=90% contains hydroxy ethylene diphosphonic acid, unavoidable impurities and water, it is characterized in that: its composition weight percentage composition is:
Hydroxy ethylene diphosphonic acid 90～98%;
Unavoidable impurities 1～2%;
Water surplus.
2, hydroxy ethylene diphosphonic acid according to claim 1 is characterized in that: physical form at normal temperatures is a solid.
3, hydroxy ethylene diphosphonic acid according to claim 2 is characterized in that: physical form at normal temperatures is a blocks of solid, or particulate solid, or the blended solid of blocks of solid and particulate solid.
4, the reparation technology of the hydroxy ethylene diphosphonic acid of a kind of content as claimed in claim 1 〉=90% is that 50%～60% hydroxy ethylene diphosphonic acid is a raw material with liquid weight percentage, it is characterized in that: carry out according to following steps successively:
(1) gets the raw materials ready, get a certain amount of liquid hydroxy ethylene diphosphonic acid with weighting method and insert in the container pending;
(2) add the nucleus sodium acetate;
(3) stir;
(4) add crystallization in motion agent dehydrated alcohol;
(5) dehydration;
(6) drying.
5, the reparation technology of hydroxy ethylene diphosphonic acid according to claim 4, when producing with the said liquid hydroxy ethylene diphosphonic acid on-line continuous of preparation, it is characterized in that: also be included in preceding cooling step, said is that said liquid hydroxy ethylene diphosphonic acid with online preparation is cooled in 10 ℃～60 ℃ scopes at preceding cooling step.
6, according to the reparation technology of claim 4 or 5 described hydroxy ethylene diphosphonic acids, it is characterized in that: the add-on of nucleus sodium acetate is 10～20ppm of the pending amount of said liquid hydroxy ethylene diphosphonic acid; The add-on of crystallization in motion agent anhydrous acetic acid is 20～30ppm of the pending amount of said liquid hydroxy ethylene diphosphonic acid.
7, according to the reparation technology of claim 4 or 5 described hydroxy ethylene diphosphonic acids, it is characterized in that: the manual stirring of said stirring system; Said processed is centrifuge dehydration; Said drying is a warm air drying, and its hot blast temperature is in 60 ℃～80 ℃ scopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510039287XA CN1312163C (en) | 2005-05-11 | 2005-05-11 | Hydroxy ethylidene diphosphonic acid with content of greater than or equal to 90 percent and process for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510039287XA CN1312163C (en) | 2005-05-11 | 2005-05-11 | Hydroxy ethylidene diphosphonic acid with content of greater than or equal to 90 percent and process for making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699381A true CN1699381A (en) | 2005-11-23 |
| CN1312163C CN1312163C (en) | 2007-04-25 |
Family
ID=35475648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510039287XA Expired - Fee Related CN1312163C (en) | 2005-05-11 | 2005-05-11 | Hydroxy ethylidene diphosphonic acid with content of greater than or equal to 90 percent and process for making same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1312163C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381377B (en) * | 2008-10-23 | 2011-05-04 | 山东省泰和水处理有限公司 | Preparation technology suitable for electronic grade solid hexamethylenediamine tetramethylene phosphonic acid |
| CN101597305B (en) * | 2009-06-14 | 2012-03-28 | 常州姚氏同德化工有限公司 | Preparation process for a solid aminotrimethylenephosphonic acid (ATMP) or 1-hydoxy ethyidene-1.1-diphosphonic acid |
| CN102875594A (en) * | 2012-10-20 | 2013-01-16 | 山东省泰和水处理有限公司 | Continuous synthesis technique of hydroxyethylidenediphosphonic acid |
| CN103435645A (en) * | 2013-09-09 | 2013-12-11 | 山东省泰和水处理有限公司 | Preparation method of low iron and low chloride hydroxyethylidene-1,1-diphosphonic acid (HEDP) |
| CN103509051A (en) * | 2012-06-21 | 2014-01-15 | 河南清水源科技股份有限公司 | Preparation process for high-purity low-arsenic hydroxyethylidene diphosphonic acid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043044C (en) * | 1993-02-16 | 1999-04-21 | 化学工业部天津化工研究院 | Method for preparation of hydroxy-ethylene-diphosphonic acid |
| CN1418883A (en) * | 2002-09-24 | 2003-05-21 | 复旦大学 | Method for producing 1-hydroxy ethylene-1,1-diphosphonic acid |
-
2005
- 2005-05-11 CN CNB200510039287XA patent/CN1312163C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381377B (en) * | 2008-10-23 | 2011-05-04 | 山东省泰和水处理有限公司 | Preparation technology suitable for electronic grade solid hexamethylenediamine tetramethylene phosphonic acid |
| CN101597305B (en) * | 2009-06-14 | 2012-03-28 | 常州姚氏同德化工有限公司 | Preparation process for a solid aminotrimethylenephosphonic acid (ATMP) or 1-hydoxy ethyidene-1.1-diphosphonic acid |
| CN103509051A (en) * | 2012-06-21 | 2014-01-15 | 河南清水源科技股份有限公司 | Preparation process for high-purity low-arsenic hydroxyethylidene diphosphonic acid |
| CN103509051B (en) * | 2012-06-21 | 2016-08-03 | 河南清水源科技股份有限公司 | A kind of preparation technology of the hydroxy ethylene diphosphonic acid of the low arsenic of high-purity |
| CN102875594A (en) * | 2012-10-20 | 2013-01-16 | 山东省泰和水处理有限公司 | Continuous synthesis technique of hydroxyethylidenediphosphonic acid |
| CN102875594B (en) * | 2012-10-20 | 2015-05-06 | 山东省泰和水处理有限公司 | Continuous synthesis technique of hydroxyethylidenediphosphonic acid |
| CN103435645A (en) * | 2013-09-09 | 2013-12-11 | 山东省泰和水处理有限公司 | Preparation method of low iron and low chloride hydroxyethylidene-1,1-diphosphonic acid (HEDP) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1312163C (en) | 2007-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1699381A (en) | Hydroxy ethylidene diphosphonic acid with content of greater than or equal to 90 percent and process for making same | |
| CN105129830A (en) | Method for preparation of potassium alum from activated clay production mother liquor | |
| CN102351220A (en) | System and technology for recovering sodium nitrate from tin-containing waste liquid treatment tail water | |
| CN1189527A (en) | Quick sweating wax making tech. | |
| CN102329212A (en) | Refining method for long-chain binary acid | |
| CN100478347C (en) | Preparing process adapted for electronic grade solid hydroxyethylidene diphosphonic acid | |
| CN105271342A (en) | Method for preparing alum by utilization of activated clay waste acid mother solution | |
| CN1582761A (en) | Preparation of edible soybean cellulose | |
| CN1704337A (en) | Process for producing high purity magnesia | |
| CN102826962B (en) | Method and device for refining cumylphenol by using phenol tar | |
| CN1029842C (en) | Method for refining long-chain binary acid | |
| CN1699380A (en) | Amino trimethylene phosphonic acid with content of greater than or equal to 90 percent and process for making same | |
| CN101857212B (en) | Method for preparing food-grade monoammonium phosphate from wet-process phosphoric acid | |
| CN110642887B (en) | Continuous production method of hydroxyethylidene diphosphonic acid crystal | |
| CN1301215C (en) | Technological process of preparing potassium nitrate and magnesium chloride | |
| CN105293796A (en) | Method for co-production of sodalumite and gypsum through activated clay production mother liquid | |
| CN103979568B (en) | The synthetic method of four hydration eight boric acid disodiums | |
| CN101074186A (en) | Production of crystalline ethylene antimony | |
| CN1299992C (en) | High purity magnesium oxide cleaning production method | |
| CN113860456A (en) | Flocculating agent and preparation method thereof | |
| CN105271588A (en) | Method for preparing sodium alum by utilization of activated clay production waste water | |
| CN203513832U (en) | Production equipment of calcium sulfate crystal whiskers | |
| CN101885495A (en) | Method for preparing high-purity anhydrous sodium carbonate | |
| CN101863756B (en) | Process for producing disodium citrate | |
| CN101818099B (en) | Method for removing phospholipid from peanut oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU JIANGHAI CHEMICAL GROUP CO.,LTD. Free format text: FORMER NAME: JIANGSU JIANGHAI CHEMICAL CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Changzhou City, Jiangsu province Wujin District Jiao Creek Jiangsu Jianghai Chemical Co., Ltd. Patentee after: Jiangsu Jianghai Chemical Group Co., Ltd. Address before: Changzhou City, Jiangsu province Wujin District Jiao Creek Jiangsu Jianghai Chemical Co., Ltd. Patentee before: Jiangsu Jianghai Chemical Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Zheng Lu Wujin District of Jiangsu city in Changzhou Province Patentee after: Jiangsu Jianghai Chemical Group Co., Ltd. Address before: Changzhou City, Jiangsu province Wujin District Jiao Creek Jiangsu Jianghai Chemical Co., Ltd. Patentee before: Jiangsu Jianghai Chemical Group Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: JIANGHAI ENVIRONMENTAL PROTECTION CO., LTD. Free format text: FORMER NAME: JIANGSU JIANGHAI CHEMICAL INDUSTRY GROUP CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Zheng Lu Wujin District 213116 Jiangsu city of Changzhou Province Patentee after: Jianghai Environmental Protection Co., Ltd. Address before: Zheng Lu Wujin District 213116 Jiangsu city of Changzhou Province Patentee before: Jiangsu Jianghai Chemical Group Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Zheng Lu Wujin District 213116 Jiangsu city of Changzhou Province Patentee after: JIANGHAI ENVIRONMENTAL PROTECTION CO., LTD. Address before: Zheng Lu Wujin District 213116 Jiangsu city of Changzhou Province Patentee before: Jianghai Environmental Protection Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180119 Address after: 213127 Wei Village Industrial Park, spring river town, Xinbei District, Changzhou City, Jiangsu Patentee after: Changzhou Jiayou Chemical Co., Ltd. Address before: Zheng Lu Wujin District 213116 Jiangsu city of Changzhou Province Patentee before: JIANGHAI ENVIRONMENTAL PROTECTION CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20190511 |