GB1540986A - Method of producing minute polymeric capsules - Google Patents

Method of producing minute polymeric capsules

Info

Publication number
GB1540986A
GB1540986A GB49840/77A GB4984077A GB1540986A GB 1540986 A GB1540986 A GB 1540986A GB 49840/77 A GB49840/77 A GB 49840/77A GB 4984077 A GB4984077 A GB 4984077A GB 1540986 A GB1540986 A GB 1540986A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
main chain
carboxyl groups
bound directly
starting material
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
GB49840/77A
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.)
NCR Voyix Corp
Original Assignee
NCR Corp
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 US05/755,831 external-priority patent/US4089802A/en
Application filed by NCR Corp filed Critical NCR Corp
Publication of GB1540986A publication Critical patent/GB1540986A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Small polymer capsules are prepared by polymerisation of water-soluble starting materials in an aqueous carrier solution, in which particles or droplets of an essentially water-insoluble material forming the capsule core are dispersed. The starting material used is monomeric, optionally methylated dimethylolurea or a polymer thereof having a low molecular weight, or urea and an aldehyde. It is polymerised in the presence of anions of a polymeric polyelectrolyte which has an aliphatic main chain, which consists of carbon atoms forming a linear chain and carries hydrogen atoms bound directly thereto, and on average has two carboxyl groups for each four to six carbon atoms belonging to said main chain, the carboxyl groups of the starting material being bound directly to carbon atoms of said main chain, some of them optionally being present in the form of anhydride groups of the formula <IMAGE> , which form a five-membered ring with two adjacent carbon atoms of the main chain. The polymer capsules obtained can be used in paper coating compositions, for inks and insecticides.
GB49840/77A 1976-12-30 1977-11-30 Method of producing minute polymeric capsules Expired GB1540986A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/755,831 US4089802A (en) 1974-07-10 1976-12-30 Capsule manufacture
US05/755,832 US4087376A (en) 1974-07-10 1976-12-30 Capsule manufacture

Publications (1)

Publication Number Publication Date
GB1540986A true GB1540986A (en) 1979-02-21

Family

ID=27116136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49840/77A Expired GB1540986A (en) 1976-12-30 1977-11-30 Method of producing minute polymeric capsules

Country Status (12)

Country Link
AR (1) AR222631A1 (en)
BR (1) BR7708692A (en)
CH (1) CH641687A5 (en)
DE (1) DE2757634C2 (en)
DK (1) DK584277A (en)
ES (1) ES465483A2 (en)
FR (1) FR2375978A1 (en)
GB (1) GB1540986A (en)
IT (1) IT1202387B (en)
NL (1) NL178846C (en)
NO (1) NO146485C (en)
SE (1) SE7714555L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406816A (en) * 1979-10-08 1983-09-27 Basf Aktiengesellschaft Process for the preparation of microcapsules, and the microcapsules obtained thereby

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107881A (en) * 1978-02-14 1979-08-24 Fuji Photo Film Co Ltd Preparation of minute capsule
JPS6023859B2 (en) * 1978-11-14 1985-06-10 神崎製紙株式会社 Method for manufacturing microcapsules

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL275857A (en) * 1961-03-13 1900-01-01
US4001140A (en) * 1974-07-10 1977-01-04 Ncr Corporation Capsule manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406816A (en) * 1979-10-08 1983-09-27 Basf Aktiengesellschaft Process for the preparation of microcapsules, and the microcapsules obtained thereby

Also Published As

Publication number Publication date
NO146485C (en) 1982-10-13
AR222631A1 (en) 1981-06-15
FR2375978A1 (en) 1978-07-28
DK584277A (en) 1978-07-01
NO146485B (en) 1982-07-05
NO774458L (en) 1978-07-03
DE2757634C2 (en) 1986-05-28
BR7708692A (en) 1978-08-15
DE2757634A1 (en) 1978-07-13
ES465483A2 (en) 1978-12-01
CH641687A5 (en) 1984-03-15
FR2375978B1 (en) 1981-02-27
IT1202387B (en) 1989-02-09
NL7714611A (en) 1978-07-04
NL178846B (en) 1986-01-02
SE7714555L (en) 1978-07-01
NL178846C (en) 1986-06-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
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)
PE20 Patent expired after termination of 20 years

Effective date: 19950605