GB1310715A - Encapsulation process - Google Patents

Encapsulation process

Info

Publication number
GB1310715A
GB1310715A GB1582870A GB1582870A GB1310715A GB 1310715 A GB1310715 A GB 1310715A GB 1582870 A GB1582870 A GB 1582870A GB 1582870 A GB1582870 A GB 1582870A GB 1310715 A GB1310715 A GB 1310715A
Authority
GB
United Kingdom
Prior art keywords
polymer
solid
solution
liquid
april
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
Application number
GB1582870A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1310715A publication Critical patent/GB1310715A/en
Expired legal-status Critical Current

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
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material
    • 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
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Glanulating (AREA)

Abstract

1310715 Encapsulation process BAYER AG 3 April 1970 [5 April 1969] 15828/70 Heading B8C [Also in Division A5] Solids and liquids are coated or encapsulated by dispersing them in an aqueous solution of a polymer which contains carboxyl or carboxylate groups and dispersing the solution or dispersion thus formed in an aqueous solution of an aluminium salt whereby the polymer is caused to harden, giving generally spherical particles of hardened polymer in which are embedded the solid or liquid particles. The encapsulated material may be a solid, a liquid or a solution of a solid in a water-immiscible liquid. Specific examples relate to the encapsulation of polybutene oil, aspirin and prontosil S. The polymer may be carboxymethyl cellulose, an alginate or pectin or a synthetic polymer such as copolymers of maleic anhydride with ethylene, isobutylene, styrene or vinyl ethers which have been at least partly converted to the carboxyl or carboxylate form, homopolymers of acrylic and methacrylic acids and copolymers thereof.
GB1582870A 1969-04-05 1970-04-03 Encapsulation process Expired GB1310715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1917738A DE1917738B2 (en) 1969-04-05 1969-04-05 Process for embedding or enveloping solid or liquid substances

Publications (1)

Publication Number Publication Date
GB1310715A true GB1310715A (en) 1973-03-21

Family

ID=5730557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1582870A Expired GB1310715A (en) 1969-04-05 1970-04-03 Encapsulation process

Country Status (11)

Country Link
JP (1) JPS4823258B1 (en)
AT (1) AT294777B (en)
AU (1) AU1332970A (en)
BE (1) BE748480A (en)
CA (1) CA928588A (en)
DE (1) DE1917738B2 (en)
ES (1) ES378246A1 (en)
FR (1) FR2042927A5 (en)
GB (1) GB1310715A (en)
IL (1) IL34146A0 (en)
IT (1) IT1040510B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493701A1 (en) * 1980-11-10 1982-05-14 Damon Corp PROCESS FOR ENCAPSULATING OILS AND LIPOSOLUBLE SUBSTANCES, SUCH AS VITAMINS, AND MICROCAPSULES OBTAINED
US7994110B2 (en) 2005-05-03 2011-08-09 Evonik Degussa Gmbh Solid redispersible emulsion

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420994A1 (en) * 1978-03-30 1979-10-26 Pentel Kk MICROCAPSULES HAVING A MINERAL WALL AND PROCESS FOR THEIR PREPARATION
JPS5929933A (en) * 1982-08-10 1984-02-17 Kajima Corp Air conditioning apparatus
US4663286A (en) * 1984-02-13 1987-05-05 Damon Biotech, Inc. Encapsulation of materials
US5855915A (en) * 1995-06-30 1999-01-05 Baylor University Tablets or biologically acceptable implants for long-term antiinflammatory drug release

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493701A1 (en) * 1980-11-10 1982-05-14 Damon Corp PROCESS FOR ENCAPSULATING OILS AND LIPOSOLUBLE SUBSTANCES, SUCH AS VITAMINS, AND MICROCAPSULES OBTAINED
US4389419A (en) * 1980-11-10 1983-06-21 Damon Corporation Vitamin encapsulation
US7994110B2 (en) 2005-05-03 2011-08-09 Evonik Degussa Gmbh Solid redispersible emulsion

Also Published As

Publication number Publication date
FR2042927A5 (en) 1971-02-12
DE1917738B2 (en) 1980-06-26
ES378246A1 (en) 1972-05-16
BE748480A (en) 1970-09-16
DE1917738A1 (en) 1970-10-08
AT294777B (en) 1971-12-10
AU1332970A (en) 1971-10-07
IL34146A0 (en) 1970-05-21
CA928588A (en) 1973-06-19
JPS4823258B1 (en) 1973-07-12
IT1040510B (en) 1979-12-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee