CH628525A5 - Process for the preparation of polyurea microcapsules - Google Patents
Process for the preparation of polyurea microcapsules Download PDFInfo
- Publication number
- CH628525A5 CH628525A5 CH1356776A CH1356776A CH628525A5 CH 628525 A5 CH628525 A5 CH 628525A5 CH 1356776 A CH1356776 A CH 1356776A CH 1356776 A CH1356776 A CH 1356776A CH 628525 A5 CH628525 A5 CH 628525A5
- Authority
- CH
- Switzerland
- Prior art keywords
- polyurea
- solvent
- water
- wall
- organic
- Prior art date
Links
- 239000003094 microcapsule Substances 0.000 title claims description 51
- 229920002396 Polyurea Polymers 0.000 title claims description 40
- 238000000034 method Methods 0.000 title claims description 35
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000002904 solvent Substances 0.000 claims description 49
- 239000002775 capsule Substances 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 33
- 239000012074 organic phase Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 20
- 239000008096 xylene Substances 0.000 claims description 20
- 239000008346 aqueous phase Substances 0.000 claims description 11
- 239000005056 polyisocyanate Substances 0.000 claims description 8
- 229920001228 polyisocyanate Polymers 0.000 claims description 8
- 238000005538 encapsulation Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000084 colloidal system Substances 0.000 claims description 5
- 239000011368 organic material Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 238000012695 Interfacial polymerization Methods 0.000 claims description 4
- 239000012071 phase Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 description 11
- 239000006185 dispersion Substances 0.000 description 9
- 239000012948 isocyanate Substances 0.000 description 8
- 150000002513 isocyanates Chemical class 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000010348 incorporation Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- DFCAFRGABIXSDS-UHFFFAOYSA-N Cycloate Chemical compound CCSC(=O)N(CC)C1CCCCC1 DFCAFRGABIXSDS-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000002363 herbicidal effect Effects 0.000 description 6
- 239000004009 herbicide Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 244000025254 Cannabis sativa Species 0.000 description 5
- GUVLYNGULCJVDO-UHFFFAOYSA-N EPTC Chemical compound CCCN(CCC)C(=O)SCC GUVLYNGULCJVDO-UHFFFAOYSA-N 0.000 description 5
- 239000000729 antidote Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- YRMLFORXOOIJDR-UHFFFAOYSA-N Dichlormid Chemical compound ClC(Cl)C(=O)N(CC=C)CC=C YRMLFORXOOIJDR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 240000008042 Zea mays Species 0.000 description 3
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 239000004495 emulsifiable concentrate Substances 0.000 description 3
- 235000009973 maize Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 description 1
- GNVMUORYQLCPJZ-UHFFFAOYSA-M Thiocarbamate Chemical compound NC([S-])=O GNVMUORYQLCPJZ-UHFFFAOYSA-M 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 229930014550 juvenile hormone Natural products 0.000 description 1
- 239000002949 juvenile hormone Substances 0.000 description 1
- 150000003633 juvenile hormone derivatives Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/14—Polymerisation; cross-linking
- B01J13/16—Interfacial polymerisation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5031—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poly(lactide-co-glycolide)
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Veterinary Medicine (AREA)
- Dispersion Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62740075A | 1975-10-30 | 1975-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH628525A5 true CH628525A5 (en) | 1982-03-15 |
Family
ID=24514487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1356776A CH628525A5 (en) | 1975-10-30 | 1976-10-27 | Process for the preparation of polyurea microcapsules |
Country Status (31)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3039117A1 (de) * | 1980-10-16 | 1982-05-13 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von mikrokapseln |
| DE3346601C2 (de) * | 1983-12-23 | 1986-06-12 | Feldmühle AG, 4000 Düsseldorf | Mikrokapseln, Verfahren zu ihrer Herstellung und ihre Verwendung in druckempfindlichen kohlefreien Durchschreibepapieren |
| AR240875A1 (es) * | 1984-01-09 | 1991-03-27 | Stauffer Chemical Co | Procedimiento para producir capsulas de poliurea de dimensiones multiples que contienen un material inmiscible en agua en su interior y las capsulas resultantes |
| LT1840145T (lt) * | 2006-03-30 | 2018-02-26 | Fmc Corporation | Acetileno karbamido dariniai - polikarbamido polimerai ir mikrokapsulės ir kompozicijos jų kontroliuojamam atpalaidavimui |
| BE1019834A4 (nl) | 2011-02-22 | 2013-01-08 | Geosea N V | Inrichting voor het vervaardigen van een fundering voor een zich op hoogte bevindende massa, bijbehorende werkwijze en samenstel van de inrichting en een opvijzelbaar platform. |
| RU2496483C1 (ru) * | 2012-03-20 | 2013-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗ ГУ) | Способ получения микрокапсул |
| RU2482849C1 (ru) * | 2012-04-09 | 2013-05-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗ ГУ) | Способ получения микрокапсул лекарственных препаратов группы цефалоспоринов в конжаковой камеди в диэтиловом эфире |
| CN103331133B (zh) * | 2013-06-07 | 2015-06-24 | 深圳大学 | 一种以聚脲为壁材的环氧微胶囊及其制备方法 |
| RU2556652C1 (ru) * | 2013-12-24 | 2015-07-10 | Александр Александрович Кролевец | Способ инкапсуляции унаби |
| RU2619329C2 (ru) * | 2014-10-06 | 2017-05-15 | Александр Александрович Кролевец | Способ получения нанокапсул аспирина в альгинате натрия |
| RU2595834C1 (ru) * | 2015-04-14 | 2016-08-27 | Александр Александрович Кролевец | Способ получения нанокапсул экстракта зеленого чая |
-
1976
- 1976-10-13 GB GB42518/76A patent/GB1566297A/en not_active Expired
- 1976-10-19 CA CA263,716A patent/CA1094402A/en not_active Expired
- 1976-10-26 PT PT65761A patent/PT65761B/pt unknown
- 1976-10-26 BR BR7607188A patent/BR7607188A/pt unknown
- 1976-10-26 MX MX166789A patent/MX146759A/es unknown
- 1976-10-27 YU YU02628/76A patent/YU262876A/xx unknown
- 1976-10-27 IN IN1944/CAL/76A patent/IN145979B/en unknown
- 1976-10-27 DE DE19762648562 patent/DE2648562A1/de not_active Withdrawn
- 1976-10-27 CH CH1356776A patent/CH628525A5/de not_active IP Right Cessation
- 1976-10-28 CS CS766965A patent/CS197280B2/cs unknown
- 1976-10-28 SE SE7611999A patent/SE7611999L/ not_active Application Discontinuation
- 1976-10-28 AT AT801876A patent/AT353750B/de not_active IP Right Cessation
- 1976-10-28 DD DD7600195505A patent/DD129032A5/xx unknown
- 1976-10-28 SU SU762414902A patent/SU707510A3/ru active
- 1976-10-28 DK DK487976A patent/DK487976A/da not_active Application Discontinuation
- 1976-10-28 FR FR7632534A patent/FR2329340A1/fr active Granted
- 1976-10-29 PH PH19071A patent/PH14926A/en unknown
- 1976-10-29 AR AR265287A patent/AR210909A1/es active
- 1976-10-29 PL PL1976193358A patent/PL118818B1/pl unknown
- 1976-10-29 HU HU76SA2986A patent/HU173923B/hu unknown
- 1976-10-29 GR GR52031A patent/GR68264B/el unknown
- 1976-10-29 ZA ZA766492A patent/ZA766492B/xx unknown
- 1976-10-29 BE BE7000915A patent/BE847878A/xx not_active IP Right Cessation
- 1976-10-29 NZ NZ182472A patent/NZ182472A/xx unknown
- 1976-10-29 AU AU19146/76A patent/AU510355B2/en not_active Expired
- 1976-10-29 NL NL7612022A patent/NL7612022A/xx not_active Application Discontinuation
- 1976-10-29 NO NO763696A patent/NO148703C/no unknown
- 1976-10-29 ES ES452836A patent/ES452836A1/es not_active Expired
- 1976-10-29 IT IT51958/76A patent/IT1066331B/it active
- 1976-10-30 JP JP51131174A patent/JPS5254687A/ja active Pending
- 1976-10-30 RO RO7688270A patent/RO69910A/ro unknown
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |