GB1483832A - Hardening microcapsule walls - Google Patents

Hardening microcapsule walls

Info

Publication number
GB1483832A
GB1483832A GB84075A GB84075A GB1483832A GB 1483832 A GB1483832 A GB 1483832A GB 84075 A GB84075 A GB 84075A GB 84075 A GB84075 A GB 84075A GB 1483832 A GB1483832 A GB 1483832A
Authority
GB
United Kingdom
Prior art keywords
microcapsules
hardening
jan
walls
colloids
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
GB84075A
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1483832A publication Critical patent/GB1483832A/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
    • B01J13/10—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)
  • Color Printing (AREA)

Abstract

1483832 Hardening microcapsules FUJI PHOTO FILM CO Ltd 8 Jan 1975 [9 Jan 1974] 840/75 Heading B8C Hydrophobic oil-containing microcapsules prepared by complex coacervation of at least two hydrophilic colloids of opposite charge are hardened by adjusting the pH of the reaction system (comprising the microcapsules with gelled walls) to alkalinity and before, during or after pH adjustment, adding formaldehyde and a keto-aldehyde R.CO.CHO where R is a C 1-4 alkyl radical. Conventional natural and synthetic wall-forming colloids and oils (as core materials) are mentioned. The products are useful for conventional purposes including the production of colour transfer and "carbonless" copying sheets.
GB84075A 1974-01-09 1975-01-08 Hardening microcapsule walls Expired GB1483832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49005781A JPS5813213B2 (en) 1974-01-09 1974-01-09 Capsule no Koukahouhou

Publications (1)

Publication Number Publication Date
GB1483832A true GB1483832A (en) 1977-08-24

Family

ID=11620638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB84075A Expired GB1483832A (en) 1974-01-09 1975-01-08 Hardening microcapsule walls

Country Status (4)

Country Link
JP (1) JPS5813213B2 (en)
DE (1) DE2500491A1 (en)
ES (1) ES433598A1 (en)
GB (1) GB1483832A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9011428B2 (en) 2011-03-02 2015-04-21 Arthrocare Corporation Electrosurgical device with internal digestor electrode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518877B2 (en) * 1972-12-14 1976-03-22

Also Published As

Publication number Publication date
JPS5099970A (en) 1975-08-08
JPS5813213B2 (en) 1983-03-12
DE2500491A1 (en) 1975-09-18
ES433598A1 (en) 1976-11-16

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Legal Events

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