GB1163023A - Encapsulation of Particulate Materials and Liquids - Google Patents

Encapsulation of Particulate Materials and Liquids

Info

Publication number
GB1163023A
GB1163023A GB4285866A GB4285866A GB1163023A GB 1163023 A GB1163023 A GB 1163023A GB 4285866 A GB4285866 A GB 4285866A GB 4285866 A GB4285866 A GB 4285866A GB 1163023 A GB1163023 A GB 1163023A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
solution
encapsulated
film
metal
glycerine
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
GB4285866A
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.)
Gunther Wagner Pelikan-Werke GmbH
Original Assignee
Gunther Wagner Pelikan-Werke GmbH
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02Making microcapsules or microballoons
    • B01J13/06Making microcapsules or microballoons by phase separation
    • B01J13/08Simple coacervation, i.e. addition of highly hydrophilic material

Abstract

1,163,023. Micro-capsules. GUNTHER WAGNER PELIKAN-WERKE. 26 Sept., 1966 [30 Sept., 1965], No. 42858/66. Heading B8C. A process of forming micro-capsules, stated to be an alternative to coacervation or polycondensation involves dispersing the substance to be encapsulated in a liquid medium with the addition of two film-forming components, one selected from the group consisting of metal alginate, metal carrageenate, metal carboxymethylcellulose, cellulose xanthogenate, unsaturated polyester and cellulose ester, and the other being a low molecular substance selected from the group consisting of metal salts having a multi-valent cation, organic acids, mineral acids, organic peroxides and O-titanic acid ester. Examples are as follows: To encapsulate tributylphosphate, ferric chloride is dissolved in it to form a 5-10% solution which is mixed with a 0À2-2% aqueous solution of ammonium alginate. Encapsulated droplets separate out which are washed in water to remove ammonium chloride and also excess ferric chloride by diffusion through the alginate film. To encapsulate clay particles, cadmium chloride solution is adsorbed on to the latter which are then suspended in a 0À1-1% aqueous sodium algenate solution. A film forms on the particles. Glycerine is encapsulated by dissolving cobalt naphthenate in a 70% solution of an unsaturated polyester resin in styrene. The solution is heated to 80‹ C. and glycerine containing methylethylketone peroxide is dispersed in it. The glycerine droplets thus are encapsulated in a polyester resin film. The process is suitable for encapsulating dyestuff solutions, pigments and solids for pharmaceutical or chemical purposes.
GB4285866A 1965-09-30 1966-09-26 Encapsulation of Particulate Materials and Liquids Expired GB1163023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW0040009 1965-09-30

Publications (1)

Publication Number Publication Date
GB1163023A true true GB1163023A (en) 1969-09-04

Family

ID=7602312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4285866A Expired GB1163023A (en) 1965-09-30 1966-09-26 Encapsulation of Particulate Materials and Liquids

Country Status (2)

Country Link
DE (1) DE1519927A1 (en)
GB (1) GB1163023A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277364A (en) * 1975-12-22 1981-07-07 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment
EP0051161A1 (en) * 1980-10-30 1982-05-12 Agro-Cap International, Inc. Encapsulation by entrapment within starch adduct matrix
US4344857A (en) * 1975-12-22 1982-08-17 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment
US4400391A (en) * 1980-01-09 1983-08-23 The United States Of America As Represented By The Secretary Of Agriculture Controlled release of bioactive materials using alginate gel beads
US4520015A (en) * 1982-06-14 1985-05-28 Bernard Pesche Method for manufacturing a product for destroying harmful animals
US4822534A (en) * 1987-03-05 1989-04-18 Lencki Robert W J Method of producing microspheres
WO1989004657A1 (en) * 1987-11-16 1989-06-01 Damon Biotech, Inc. Sustained release of encapsulated molecules
US5427935A (en) * 1987-07-24 1995-06-27 The Regents Of The University Of Michigan Hybrid membrane bead and process for encapsulating materials in semi-permeable hybrid membranes
WO1997002759A1 (en) * 1995-07-07 1997-01-30 British-American Tobacco Company Limited Stabilisation of flavourants
US7766637B2 (en) 2006-03-03 2010-08-03 Fmc Corporation Method and apparatus for the preparation of capsules
US7972620B2 (en) 2002-04-04 2011-07-05 Fmc Biopolymer As Polysaccharide capsules and methods of preparation

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344857A (en) * 1975-12-22 1982-08-17 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment
US4277364A (en) * 1975-12-22 1981-07-07 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment
US4400391A (en) * 1980-01-09 1983-08-23 The United States Of America As Represented By The Secretary Of Agriculture Controlled release of bioactive materials using alginate gel beads
EP0051161A1 (en) * 1980-10-30 1982-05-12 Agro-Cap International, Inc. Encapsulation by entrapment within starch adduct matrix
US4382813A (en) * 1980-10-30 1983-05-10 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment within starch adduct matrix
US4520015A (en) * 1982-06-14 1985-05-28 Bernard Pesche Method for manufacturing a product for destroying harmful animals
US4822534A (en) * 1987-03-05 1989-04-18 Lencki Robert W J Method of producing microspheres
US5427935A (en) * 1987-07-24 1995-06-27 The Regents Of The University Of Michigan Hybrid membrane bead and process for encapsulating materials in semi-permeable hybrid membranes
WO1989004657A1 (en) * 1987-11-16 1989-06-01 Damon Biotech, Inc. Sustained release of encapsulated molecules
US4923645A (en) * 1987-11-16 1990-05-08 Damon Biotech, Inc. Sustained release of encapsulated molecules
WO1997002759A1 (en) * 1995-07-07 1997-01-30 British-American Tobacco Company Limited Stabilisation of flavourants
US7972620B2 (en) 2002-04-04 2011-07-05 Fmc Biopolymer As Polysaccharide capsules and methods of preparation
US9017720B2 (en) 2002-04-04 2015-04-28 FMC Bioploymer AS Polysaccharide capsules and method of preparation
US7766637B2 (en) 2006-03-03 2010-08-03 Fmc Corporation Method and apparatus for the preparation of capsules
US8153037B2 (en) 2006-03-03 2012-04-10 Fmc Corporation Method and apparatus for the preparation of capsules
US8916192B2 (en) 2006-03-03 2014-12-23 Fmc Corporation Method and apparatus for the preparation of capsules

Also Published As

Publication number Publication date Type
DE1519927A1 (en) 1970-01-22 application

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees