GB1117178A - Method of making capsules by coacervation - Google Patents
Method of making capsules by coacervationInfo
- Publication number
- GB1117178A GB1117178A GB1913067A GB1913067A GB1117178A GB 1117178 A GB1117178 A GB 1117178A GB 1913067 A GB1913067 A GB 1913067A GB 1913067 A GB1913067 A GB 1913067A GB 1117178 A GB1117178 A GB 1117178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capsules
- coacervate
- stringy
- gelatin
- phase
- 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.)
- Expired
Links
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
- B01J13/10—Complex coacervation, i.e. interaction of oppositely charged particles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Preparation (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
1,117,178. Making capsules. NATIONAL CASH REGISTER CO. 26 April, 1967 [27 May, 1966], No. 19130/67. Heading B8C. Capsules, of up to about 1¢ cms. diameter and composed of a hydrophobic solid or liquid core surrounded by a hydrophilic polymer shell, are produced by forming a dispersion of core material (of the desired dimensions) in an aqueous solution of at least one hydrophilic polymeric material and causing a coacervate phase comprising the polymer(s) to form, in which phase the coacervate particles are " stringy " rather than globular, by adjustment of pH and temperature. The stringy coacervate is able to surround and encapsulate the relatively large cores and the capsules formed may be hardened, and dried by conventional procedures. In examples, viscous liquid cores (pigment in silicone fluid and dioctyl phthalate) are encapsulated in shells of gelatin/carrageenan and gelatin/gum arabic/ethylene-maleic anhydride copolymers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55330666A | 1966-05-27 | 1966-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1117178A true GB1117178A (en) | 1968-06-19 |
Family
ID=24208923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1913067A Expired GB1117178A (en) | 1966-05-27 | 1967-04-26 | Method of making capsules by coacervation |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE698967A (en) |
| CH (1) | CH471596A (en) |
| DE (1) | DE1619792A1 (en) |
| GB (1) | GB1117178A (en) |
| NL (1) | NL6707052A (en) |
| SE (1) | SE328845B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011051034A1 (en) | 2009-10-30 | 2011-05-05 | Evonik Röhm Gmbh | Reactive 1-component roadway marking |
| DE102009046244A1 (en) | 2009-10-30 | 2011-05-19 | Evonik Röhm Gmbh | Encapsulation of reactive components for 1-component systems using coaxial nozzles |
-
1967
- 1967-04-26 GB GB1913067A patent/GB1117178A/en not_active Expired
- 1967-05-19 SE SE703067A patent/SE328845B/xx unknown
- 1967-05-22 CH CH718767A patent/CH471596A/en not_active IP Right Cessation
- 1967-05-22 NL NL6707052A patent/NL6707052A/xx unknown
- 1967-05-23 DE DE19671619792 patent/DE1619792A1/en active Pending
- 1967-05-25 BE BE698967D patent/BE698967A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011051034A1 (en) | 2009-10-30 | 2011-05-05 | Evonik Röhm Gmbh | Reactive 1-component roadway marking |
| DE102009046251A1 (en) | 2009-10-30 | 2011-05-19 | Evonik Röhm Gmbh | Reactive 1-component road markings |
| DE102009046244A1 (en) | 2009-10-30 | 2011-05-19 | Evonik Röhm Gmbh | Encapsulation of reactive components for 1-component systems using coaxial nozzles |
Also Published As
| Publication number | Publication date |
|---|---|
| BE698967A (en) | 1967-11-03 |
| SE328845B (en) | 1970-09-28 |
| CH471596A (en) | 1969-04-30 |
| DE1619792A1 (en) | 1970-08-27 |
| NL6707052A (en) | 1967-11-28 |
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