GB1138570A - A method of preparing minute polymeric capsules - Google Patents
A method of preparing minute polymeric capsulesInfo
- Publication number
- GB1138570A GB1138570A GB4315767A GB4315767A GB1138570A GB 1138570 A GB1138570 A GB 1138570A GB 4315767 A GB4315767 A GB 4315767A GB 4315767 A GB4315767 A GB 4315767A GB 1138570 A GB1138570 A GB 1138570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- poly
- maleic anhydride
- hydrogen bonding
- microcapsules
- polymer
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Medicinal Preparation (AREA)
Abstract
1,138,570. Microcapsules. NATIONAL CASH REGISTER CO. 22 Sept., 1967 [10 Oct., 1966], No. 43157/67. Heading B8C. Microcapsules, each consisting of a wall of polymeric material enclosing a solid or liquid core particle, are made by dispersing the core material in a manufacturing liquid from which there is caused to separate a polymer-rich phase comprising a polymeric complex composed of two kinds of polymeric material joined by hydrogen bonding which coats the dispersed particles to form microcapsules in the usual way. Both types of polymer may be present in the initial manufacturing liquid, from which they are induced to separate by changing conditions, e.g. the pH may be changed or a solution of one type may be added to the system already containing the other under conditions allowing immediate formation of the complex and phaseseparation thereof. The polymer pair should comprise at least one "Hydrogen bonding acid" e.g. polyacrylic acid, poly(methacrylic acid), poly(vinyl alcohol), poly(vinyl pyrrolidone), methyl cellulose, carboxymethyl cellulose, poly- (styrene co - maleic anhydride), poly(vinylmethylether co-maleic anhydride) or poly(ethylene co-maleic anhydride) and at least one "Hydrogen bonding base" e.g. poly(ethylene oxide), poly(ethylene oxide co-propylene oxide), poly(propylene oxide), poly(vinyl pyrrolidone), poly(vinyl alcohol), poly(ethylene glycol), poly- (acrylic acid) or poly(methacrylic acid) (the designations "acidic" and "basic" being relative not absolute). The capsules may be dried in the usual way. Examples relate to the encap. sulation of stainless steel particles, ammonium dichromate and lemon oil.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58531466A | 1966-10-10 | 1966-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1138570A true GB1138570A (en) | 1969-01-01 |
Family
ID=24340909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4315767A Expired GB1138570A (en) | 1966-10-10 | 1967-09-22 | A method of preparing minute polymeric capsules |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT286239B (en) |
BE (1) | BE704833A (en) |
CH (1) | CH486270A (en) |
DE (1) | DE1619798A1 (en) |
ES (1) | ES345751A1 (en) |
GB (1) | GB1138570A (en) |
NL (1) | NL6713637A (en) |
SE (1) | SE313040B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0327199A2 (en) * | 1988-01-29 | 1989-08-09 | Imperial Chemical Industries Plc | Composite particle dispersions |
CN110876378A (en) * | 2019-12-11 | 2020-03-13 | 利民化学有限责任公司 | Intelligent microcapsule suspending agent and preparation method thereof |
-
1967
- 1967-09-22 GB GB4315767A patent/GB1138570A/en not_active Expired
- 1967-10-04 ES ES345751A patent/ES345751A1/en not_active Expired
- 1967-10-06 CH CH1404067A patent/CH486270A/en not_active IP Right Cessation
- 1967-10-06 NL NL6713637A patent/NL6713637A/xx unknown
- 1967-10-07 DE DE19671619798 patent/DE1619798A1/en active Pending
- 1967-10-09 BE BE704833D patent/BE704833A/xx unknown
- 1967-10-09 SE SE1378267A patent/SE313040B/xx unknown
- 1967-10-10 AT AT915867A patent/AT286239B/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0327199A2 (en) * | 1988-01-29 | 1989-08-09 | Imperial Chemical Industries Plc | Composite particle dispersions |
EP0327199A3 (en) * | 1988-01-29 | 1990-06-06 | Imperial Chemical Industries Plc | Composite particle dispersions |
US4997864A (en) * | 1988-01-29 | 1991-03-05 | Imperial Chemical Industries Plc | Composite particle dispersions |
CN110876378A (en) * | 2019-12-11 | 2020-03-13 | 利民化学有限责任公司 | Intelligent microcapsule suspending agent and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
AT286239B (en) | 1970-11-25 |
ES345751A1 (en) | 1968-11-16 |
CH486270A (en) | 1970-02-28 |
NL6713637A (en) | 1968-04-11 |
BE704833A (en) | 1968-02-15 |
SE313040B (en) | 1969-08-04 |
DE1619798A1 (en) | 1970-10-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IE38738L (en) | Pourable liquid composition. | |
IE812327L (en) | Microcapsules | |
GB1275712A (en) | Method of preparing capsules | |
GB1266400A (en) | ||
CA962165A (en) | Dispositif de stockage et d'utilisation d'energie hydraulique et/ou pneumatique notamment pour des tetes de puits de forage immergees | |
GB1204511A (en) | Improvements in or relating to pigments | |
JPS5266302A (en) | Closed area communication system | |
GB1138570A (en) | A method of preparing minute polymeric capsules | |
GB1176706A (en) | Treatment of Liquids | |
JPS5598909A (en) | Fiber and sewn product | |
JPS5228300A (en) | Stacking container | |
JPS5341388A (en) | Suspension polymerization | |
ES396068A2 (en) | Procedure for the encapsulation of substances finally distributed in a liquid. (Machine-translation by Google Translate, not legally binding) | |
JPS5318646A (en) | Soil conditioner | |
JPS522224A (en) | Fault detection system for memory unit | |
Vinokurova et al. | Influence of Pressure on the Hall Effect in Dy Single Crystals | |
Rogers | Symmetry and degeneracy. The particle in a squeezed box | |
USD215774S (en) | Fig- ure | |
JPS5221740A (en) | Magnetic media discriminating system | |
Butorin | On the equivalent circuit of a metal stub of arbitrary radius and height in a rectangular waveguide. | |
Sullerot | Employment of women and the problems it raises in the Member States of the European Community (Abridged version of Mrs. E. Sullerot's report) | |
VIVCHAR et al. | Study of the Gd-Fe-Al system in the region of low gadolinium content | |
Young | Identification of utility functions through an investment game | |
Tyler | The distribution and properties of renal kininogenase | |
Hepburn | Generation and acceleration of charged liquid particle beams |