CN1110250A - Technology for producing active calcium phosphate - Google Patents
Technology for producing active calcium phosphate Download PDFInfo
- Publication number
- CN1110250A CN1110250A CN 94113016 CN94113016A CN1110250A CN 1110250 A CN1110250 A CN 1110250A CN 94113016 CN94113016 CN 94113016 CN 94113016 A CN94113016 A CN 94113016A CN 1110250 A CN1110250 A CN 1110250A
- Authority
- CN
- China
- Prior art keywords
- calcium phosphate
- active calcium
- phosphoric acid
- aqueous solution
- parts
- 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
- 239000001506 calcium phosphate Substances 0.000 title claims abstract description 15
- 229910000389 calcium phosphate Inorganic materials 0.000 title claims abstract description 15
- 235000011010 calcium phosphates Nutrition 0.000 title claims abstract description 15
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 9
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000001488 sodium phosphate Substances 0.000 claims description 8
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 8
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 8
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 238000010557 suspension polymerization reaction Methods 0.000 abstract description 4
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 2
- 230000032683 aging Effects 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 abstract 1
- 229940048086 sodium pyrophosphate Drugs 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 abstract 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Paper (AREA)
Abstract
The present invention discloses a production technique of active calcium phosphate. It is characterized by that it makes calcium hydroxide and phosphoric acid implement synthetic reaction in aqueous solution, and then adds a proper quantity of sodium pyrophosphate to make them implement cross-linking reaction and stabilization. The active calcium phosphate produced by using said invented method is specially applicable to suspension polymerization of dispersing agent of resins of ABS, PS and EPS. It has the advantages of high yield, uniform and fine product quality, high purity, low production cost, short ageing time and easy-to-control reaction process.
Description
The present invention relates to the production technology of active calcium phosphate.
Active calcium phosphate (TCP) belongs to hydroxy kind, it is a kind of inorganic dispersant, particularly as suspension polymerization ABS, the dispersion agent of resin such as PS and EPS, in plastics industry, occupy an important position, roll up No. 7 according to " Gazette of Patent for Invention " the 6th that Patent Office of the People's Republic of China (PRC) publishes, patent application document (the application number: 88104296.X) that a kind of name is called " preparation method and use of calcium phosphate powder " is disclosed, it is characterized in that between 60～90 ℃, pH value is to make calcium hydroxide and phosphoric acid react synthetic under 11～12 the envrionment conditions in the aqueous solution, regenerates with sodium hydroxide solution at last.The calcium phosphate powder of Sheng Chenging is a kind of organism like this, and poor activity is as the dispersion agent of resins such as suspension polymerization ABS, PS and EPS, poor-performing.
The objective of the invention is to propose a kind of production technology of active calcium phosphate.
The objective of the invention is to realize by following technical solution:
The production technology of active calcium phosphate,
Its composition of raw materials (by weight) is as follows:
Water: 100 parts
Calcium hydroxide: 6～9 parts
Phosphoric acid: 4～8 parts
Trisodium phosphate: an amount of.
It is undertaken by following step successively:
(1). calcium hydroxide is made into 8～12% the aqueous solution, puts into reactor and stir, be warming up to 35～45 ℃,
(2). phosphoric acid is made into 15～35% the aqueous solution, slowly adds in the reactor, the control pH value is 5.0～9.0, stir and carry out chemical reaction,
(3). add trisodium phosphate again, controlled temperature is 90～100 ℃, stirred 2～3 hours, the solution pulpous state that is white in color,
(4). cooling discharging,
Feature of the present invention is to make calcium hydroxide and phosphoric acid carry out building-up reactions in the aqueous solution, it is crosslinked stable to add an amount of trisodium phosphate again, the active calcium phosphate of producing by the present invention is specially adapted to the dispersion agent of resins such as suspension polymerization ABS, PS and EPS, has yield height, the thin matter of product is even, purity is high, production cost is low, digestion time is short, reaction process is easy to control advantage.
Embodiment:
The production technology of active calcium phosphate, its composition of raw materials (by weight) is as follows:
Water: 100 parts
Calcium hydroxide: 6～9 parts
Phosphoric acid: 4～8 parts
Trisodium phosphate: an amount of.
It is undertaken by following step successively:
(1). calcium hydroxide is made into 9～10% the aqueous solution, put into whipping appts and the heating of chuck used vapour are housed, internal layer is the reactor with ceramic material, stir with 60～100 rev/mins rotating speeds, and pass to steam and be warming up to 35～45 ℃,
(2). phosphoric acid is made into 25～30% the aqueous solution, slowly adds in the reactor, the control pH value is 5.0～9.0, continues to stir and carries out following reaction:
(3). 0.2～1.2% ratio in phosphoric acid weight adds trisodium phosphate again, and controlled temperature is 90～100 ℃, continue to stir 2～3 hours, the solution pulpous state that is white in color, its trisodium phosphate plays crosslinked action, is the stablizer of active calcium phosphate,
(4). cooling discharging promptly makes active calcium phosphate.
Claims (1)
1, a kind of production technology of active calcium phosphate, it is undertaken by following step successively:
(1). calcium hydroxide is made into 8～12% the aqueous solution, puts into reactor and stir, be warming up to 35～45 ℃,
(2). phosphoric acid is made into 15～35% the aqueous solution, slowly adds in the reactor, the control pH value is 5.0～9.0, stir and carry out chemical reaction,
It is characterized in that:
(3). add trisodium phosphate again, controlled temperature is 90～100 ℃, stirred 2～3 hours, the solution pulpous state that is white in color,
(4). cooling discharging,
Composition of raw materials (by weight):
Water: 100 parts
Calcium hydroxide: 6～9 parts
Phosphoric acid: 4～8 parts
Trisodium phosphate: an amount of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113016A CN1035321C (en) | 1994-12-05 | 1994-12-05 | Technology for producing active calcium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113016A CN1035321C (en) | 1994-12-05 | 1994-12-05 | Technology for producing active calcium phosphate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1110250A true CN1110250A (en) | 1995-10-18 |
| CN1035321C CN1035321C (en) | 1997-07-02 |
Family
ID=5036480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113016A Expired - Fee Related CN1035321C (en) | 1994-12-05 | 1994-12-05 | Technology for producing active calcium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035321C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072186C (en) * | 1997-05-22 | 2001-10-03 | 开远市银通饲料厂 | Process for producing high effective phosphorus calcium hydrogen phosphate |
| CN1085506C (en) * | 1999-12-30 | 2002-05-29 | 随长城 | Calcium enriched additive and preparing method |
| CN101905133A (en) * | 2010-06-28 | 2010-12-08 | 四川绵竹川润化工有限公司 | Novel active calcium phosphate and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK137180B (en) * | 1975-10-10 | 1978-01-30 | Dansk Ind Syndikat | Process for the preparation of a powder or granular, non-dusting mineral mixture containing calcium phosphates. |
| SU1555277A1 (en) * | 1987-05-06 | 1990-04-07 | Московский химико-технологический институт им.Д.И.Менделеева | Method of obtaining calcium phosphates |
-
1994
- 1994-12-05 CN CN94113016A patent/CN1035321C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072186C (en) * | 1997-05-22 | 2001-10-03 | 开远市银通饲料厂 | Process for producing high effective phosphorus calcium hydrogen phosphate |
| CN1085506C (en) * | 1999-12-30 | 2002-05-29 | 随长城 | Calcium enriched additive and preparing method |
| CN101905133A (en) * | 2010-06-28 | 2010-12-08 | 四川绵竹川润化工有限公司 | Novel active calcium phosphate and preparation method thereof |
| CN101905133B (en) * | 2010-06-28 | 2012-06-27 | 四川绵竹川润化工有限公司 | Novel active calcium phosphate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035321C (en) | 1997-07-02 |
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|---|---|---|---|
| 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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |