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GB1455576A - Oil-containing microcapsules and a process for their production - Google Patents

Oil-containing microcapsules and a process for their production

Info

Publication number
GB1455576A
GB1455576A GB2728173A GB2728173A GB1455576A GB 1455576 A GB1455576 A GB 1455576A GB 2728173 A GB2728173 A GB 2728173A GB 2728173 A GB2728173 A GB 2728173A GB 1455576 A GB1455576 A GB 1455576A
Authority
GB
United Kingdom
Prior art keywords
oil
solution
carboxymethyl cellulose
alkylated
microcapsules
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
GB2728173A
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.)
Arjo Wiggins Ltd
Original Assignee
Wiggins Teape 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 Wiggins Teape Ltd filed Critical Wiggins Teape Ltd
Priority to GB2728173A priority Critical patent/GB1455576A/en
Priority to NO741975A priority patent/NO741975L/no
Priority to NL7407546A priority patent/NL7407546A/xx
Priority to AU69807/74A priority patent/AU6980774A/en
Priority to SE7407470A priority patent/SE7407470L/
Priority to FI1741/74A priority patent/FI174174A/fi
Priority to FR7419493A priority patent/FR2232360B1/fr
Priority to DK303674A priority patent/DK303674A/da
Priority to IT68787/74A priority patent/IT1014295B/en
Priority to ES427055A priority patent/ES427055A1/en
Priority to BR4719/74A priority patent/BR7404719D0/en
Priority to AR254103A priority patent/AR201325A1/en
Priority to JP49064880A priority patent/JPS5068970A/ja
Priority to DE19742427470 priority patent/DE2427470A1/en
Priority to BE145197A priority patent/BE816062A/en
Priority to AT471774A priority patent/ATA471774A/en
Publication of GB1455576A publication Critical patent/GB1455576A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
    • 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)
  • Manufacturing Of Micro-Capsules (AREA)
  • Medicinal Preparation (AREA)
  • Color Printing (AREA)

Abstract

1455576 Microcapsules WIGGINS TEAPE Ltd 30 May 1974 [7 June 1973] 27281/73 Heading B8C A method of producing individual mononuclear oil-containing microcapsules comprises emulsifying an oil in a solution of a gellable hydrophilic colloid (e.g. an aqueous solution of gelatin), adding a solution of carboxymethyl cellulose to the emulsion, effecting complex coacervation so as to form mononuclear microcapsules each comprising a droplet of the oil as a nucleus with a wall of the colloid material and carboxymethyl cellulose around the nucleus, and gelling the microcapsule walls, the dry weight ratio of the colloid material to active content of the carboxymethyl cellulose used being between 1 : 0À35 and 1 : 1À2. The use of methyl cellulose and carboxymethyl cellulose in a ratio of 1 : 1, and also the use of gelatin and carboxymethyl cellulose in a ratio of 1 : 0À5, are disclaimed. The oil may be a mineral oil (e.g. kerosene) or a synthetic oil such as alkylated diarylmethanes, di-isopropyl naphthalene, mono-isopropyl biphenyl, dibenzyl benzenes, heptyl undecyl phthalate, alkylated diarylethanes and alkylated benzenes. Kerosene of alkylated benzene may be used as diluents for other synthetic oils and in the examples partially hydrogenated terphenyl diluted with kerosene is employed. Complex coacervation is effected in the examples, after adding carboxymethyl cellulose to the emulsion of oil in aqueous gelatin solution, by lowering the pH of the mixture from 7À5 to 4À4 by addition of acetic acid, followed by cooling of the mixture from 55 to 10‹ C. Glutaroldehyde solution is then added, the mixture stirred overnight, the pH then raised to 10 by addition of sodium carbonate solution and finally forwaldehyde solution is added. The oil employed may contain dissolved dye and the microcapsules produced may be coated on to a paper base for use in a pressure-sensitive copying system.
GB2728173A 1973-06-07 1973-06-07 Oil-containing microcapsules and a process for their production Expired GB1455576A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
GB2728173A GB1455576A (en) 1973-06-07 1973-06-07 Oil-containing microcapsules and a process for their production
NO741975A NO741975L (en) 1973-06-07 1974-05-31
NL7407546A NL7407546A (en) 1973-06-07 1974-06-05
AU69807/74A AU6980774A (en) 1973-06-07 1974-06-05 Capsules
SE7407470A SE7407470L (en) 1973-06-07 1974-06-06
FI1741/74A FI174174A (en) 1973-06-07 1974-06-06
FR7419493A FR2232360B1 (en) 1973-06-07 1974-06-06
DK303674A DK303674A (en) 1973-06-07 1974-06-06
IT68787/74A IT1014295B (en) 1973-06-07 1974-06-06 MICROCAPS FOR COPYING SYSTEMS AND PROCEDURE FOR THEIR MANUFACTURING
ES427055A ES427055A1 (en) 1973-06-07 1974-06-06 Oil-containing microcapsules and a process for their production
BR4719/74A BR7404719D0 (en) 1973-06-07 1974-06-07 PROCESS TO PRODUCE INDIVIDUAL MONONUCLEAR MICROCAPSULES CONTAINING OIL AND MICROCAPSULES CONTAINING OIL OBTAINED
AR254103A AR201325A1 (en) 1973-06-07 1974-06-07 INDIVIDUAL MONONUCLEAR MICROCAPSULES CONTAINING OIL AND METHOD FOR ITS PRODUCTION
JP49064880A JPS5068970A (en) 1973-06-07 1974-06-07
DE19742427470 DE2427470A1 (en) 1973-06-07 1974-06-07 Mononuclear Oily Microcapsules And Process For Their Manufacture
BE145197A BE816062A (en) 1973-06-07 1974-06-07 CAPSULES
AT471774A ATA471774A (en) 1973-06-07 1974-06-07 METHOD OF MANUFACTURING SOLID, OL-CONTAINING MICROCAPSULES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2728173A GB1455576A (en) 1973-06-07 1973-06-07 Oil-containing microcapsules and a process for their production

Publications (1)

Publication Number Publication Date
GB1455576A true GB1455576A (en) 1976-11-17

Family

ID=10257030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2728173A Expired GB1455576A (en) 1973-06-07 1973-06-07 Oil-containing microcapsules and a process for their production

Country Status (16)

Country Link
JP (1) JPS5068970A (en)
AR (1) AR201325A1 (en)
AT (1) ATA471774A (en)
AU (1) AU6980774A (en)
BE (1) BE816062A (en)
BR (1) BR7404719D0 (en)
DE (1) DE2427470A1 (en)
DK (1) DK303674A (en)
ES (1) ES427055A1 (en)
FI (1) FI174174A (en)
FR (1) FR2232360B1 (en)
GB (1) GB1455576A (en)
IT (1) IT1014295B (en)
NL (1) NL7407546A (en)
NO (1) NO741975L (en)
SE (1) SE7407470L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222891A (en) * 1977-08-17 1980-09-16 Kanzaki Paper Mfg. Co., Ltd. Method of making oil-containing microcapsules

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114179A (en) * 1974-07-26 1976-02-04 Fuji Photo Film Co Ltd
DE3016170A1 (en) 1980-04-26 1981-10-29 Bayer Ag, 5090 Leverkusen MICROCAPSULES WITH A DEFINED OPENING TEMPERATURE, METHOD FOR THE PRODUCTION AND USE THEREOF
US9687424B2 (en) 2009-09-18 2017-06-27 International Flavors & Fragrances Polyurea capsules prepared with aliphatic isocyanates and amines
US9816059B2 (en) 2009-09-18 2017-11-14 International Flavors & Fragrances Stabilized capsule compositions
US11311467B2 (en) 2009-09-18 2022-04-26 International Flavors & Fragrances Inc. Polyurea capsules prepared with a polyisocyanate and cross-linking agent
US10226405B2 (en) 2009-09-18 2019-03-12 International Flavors & Fragrances Inc. Purified polyurea capsules, methods of preparation, and products containing the same
US10085925B2 (en) 2009-09-18 2018-10-02 International Flavors & Fragrances Inc. Polyurea capsule compositions
CN102120167B (en) * 2009-09-18 2014-10-29 国际香料和香精公司 encapsulated active material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222891A (en) * 1977-08-17 1980-09-16 Kanzaki Paper Mfg. Co., Ltd. Method of making oil-containing microcapsules

Also Published As

Publication number Publication date
FR2232360B1 (en) 1978-01-20
NL7407546A (en) 1974-12-10
JPS5068970A (en) 1975-06-09
AU6980774A (en) 1975-12-11
DK303674A (en) 1975-02-03
AR201325A1 (en) 1975-02-28
FR2232360A1 (en) 1975-01-03
ES427055A1 (en) 1976-09-01
SE7407470L (en) 1974-12-09
FI174174A (en) 1974-12-08
NO741975L (en) 1975-01-06
DE2427470A1 (en) 1975-01-09
ATA471774A (en) 1976-04-15
IT1014295B (en) 1977-04-20
BR7404719D0 (en) 1975-09-30
BE816062A (en) 1974-12-09

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed