GB1450665A - Microcapsules - Google Patents

Microcapsules

Info

Publication number
GB1450665A
GB1450665A GB1186374A GB1186374A GB1450665A GB 1450665 A GB1450665 A GB 1450665A GB 1186374 A GB1186374 A GB 1186374A GB 1186374 A GB1186374 A GB 1186374A GB 1450665 A GB1450665 A GB 1450665A
Authority
GB
United Kingdom
Prior art keywords
liquid
polymer particles
microcapsules
polymer
disperse
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
GB1186374A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1186374A priority Critical patent/GB1450665A/en
Priority to ZA751627A priority patent/ZA751627B/en
Priority to AU79137/75A priority patent/AU496421B2/en
Priority to CA222,367A priority patent/CA1045913A/en
Publication of GB1450665A publication Critical patent/GB1450665A/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
    • B01J13/14—Polymerisation; cross-linking
    • B01J13/18—In situ polymerisation with all reactants being present in the same phase
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Cosmetics (AREA)

Abstract

1450665 Microcapsules IMPERIAL CHEMICAL INDUSTRIES Ltd 5 March 1975 [18 March 1974] 11863/74 Heading B8C A process for producing microcapsules comprises (a) forming a dispersion of polymer particles in a first liquid which is a non-solvent for the polymer, (b) emulsifying said dispersion in the presence of an emulsifying agent, as a disperse phase of microcapsule precursors in a second liquid which is immiscible with the first liquid and is a non-solvent for the polymer, the emulsifying agent being solvated by the second liquid and non-solvated by the first liquid whereby the disperse polymer particles are concentrated in the region of the interface of the first and second liquids and (c) integrating at least some of the disperse polymer particles in the region of the interface to form microcapsules. The polymer particles suitably have a size in the range 0À1-2 micron and may be prepared by polymerizing appropriate monomers in a medium which comprises the first liquid. The monomer may be selected from C 1-4 alkyl acrylates or methacrylates, vinyl esters and styrene and homologues thereof. The first liquid may contain dispersed or dissolved material, e.g. a pigment such as titanium dioxide, which is to be incorporated within the microcapsule. The first or second liquid may be water or an aliphatic hydrocarbon. Integration may occur in the presence of a coalescing agent.
GB1186374A 1974-03-18 1974-03-18 Microcapsules Expired GB1450665A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1186374A GB1450665A (en) 1974-03-18 1974-03-18 Microcapsules
ZA751627A ZA751627B (en) 1974-03-18 1975-03-17 Microcapsules
AU79137/75A AU496421B2 (en) 1974-03-18 1975-03-17 Microcapsules
CA222,367A CA1045913A (en) 1974-03-18 1975-03-18 Preparation of microcapsules using dispersed polymer as outer shell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1186374A GB1450665A (en) 1974-03-18 1974-03-18 Microcapsules

Publications (1)

Publication Number Publication Date
GB1450665A true GB1450665A (en) 1976-09-22

Family

ID=9994071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1186374A Expired GB1450665A (en) 1974-03-18 1974-03-18 Microcapsules

Country Status (3)

Country Link
CA (1) CA1045913A (en)
GB (1) GB1450665A (en)
ZA (1) ZA751627B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8440752B2 (en) 2001-02-22 2013-05-14 Valspar Sourcing, Inc. Coating compositions containing low VOC compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8440752B2 (en) 2001-02-22 2013-05-14 Valspar Sourcing, Inc. Coating compositions containing low VOC compounds

Also Published As

Publication number Publication date
AU7913775A (en) 1976-09-23
ZA751627B (en) 1976-11-24
CA1045913A (en) 1979-01-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee