GB1264918A - - Google Patents

Info

Publication number
GB1264918A
GB1264918A GB1264918DA GB1264918A GB 1264918 A GB1264918 A GB 1264918A GB 1264918D A GB1264918D A GB 1264918DA GB 1264918 A GB1264918 A GB 1264918A
Authority
GB
United Kingdom
Prior art keywords
nucleus
microcapsules
polymeric
sept
polymers
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
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
Priority claimed from DE19691948626 external-priority patent/DE1948626C3/en
Application filed filed Critical
Publication of GB1264918A publication Critical patent/GB1264918A/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

Abstract

1,264,918. Microcapsules. NATIONAL CASH REGISTER CO. 14 Sept., 1970 [26 Sept., 1969], No. 43778/70. Heading B8C. Microcapsules each composed of a substantially water-insoluble nucleus surrounded by a polymeric capsular wall are prepared by dispersing the nucleus material in an agitated aqueous solution of at least one organic, hydrophilic, film-forming polymer and at least one inorganic polymeric material, causing coacervation of the polymers which, on separating, deposit around the nucleus particles to form a liquid polymeric wall which is solidified by cooling. Thereafter, the microcapsules may be separated, dried and/or chemically hardened. Suitable organic polymers are gelatine, polyvinyl alcohol and polyvinyl-pyrrolidone. Suitable inorganic polymeric materials are water soluble polyphosphates, polysilicates, polymolybdates and polytungstates. The nucleus material may be a solid or an oil.
GB1264918D 1969-09-26 1970-09-14 Expired GB1264918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691948626 DE1948626C3 (en) 1969-09-26 Process for making small polymer capsules

Publications (1)

Publication Number Publication Date
GB1264918A true GB1264918A (en) 1972-02-23

Family

ID=5746538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1264918D Expired GB1264918A (en) 1969-09-26 1970-09-14

Country Status (12)

Country Link
JP (1) JPS4817985B1 (en)
AT (1) AT306679B (en)
BE (1) BE756619A (en)
CH (1) CH539452A (en)
DK (1) DK132163C (en)
ES (1) ES383640A1 (en)
FR (1) FR2062401A5 (en)
GB (1) GB1264918A (en)
NL (1) NL166410C (en)
NO (1) NO129663B (en)
SE (1) SE371749B (en)
ZA (1) ZA705814B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62137504U (en) * 1986-02-25 1987-08-29

Also Published As

Publication number Publication date
NL7014179A (en) 1971-03-30
NO129663B (en) 1974-05-13
BE756619A (en) 1971-03-01
NL166410B (en) 1981-03-16
CH539452A (en) 1973-07-31
DE1948626A1 (en) 1971-05-06
DK132163B (en) 1975-11-03
SE371749B (en) 1974-12-02
ZA705814B (en) 1971-04-28
FR2062401A5 (en) 1971-06-25
NL166410C (en) 1981-08-17
DK132163C (en) 1976-04-05
DE1948626B2 (en) 1972-05-18
ES383640A1 (en) 1973-02-16
JPS4817985B1 (en) 1973-06-02
AT306679B (en) 1973-04-25

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee