CA1108944A - Fabrication de capsules - Google Patents

Fabrication de capsules

Info

Publication number
CA1108944A
CA1108944A CA288,871A CA288871A CA1108944A CA 1108944 A CA1108944 A CA 1108944A CA 288871 A CA288871 A CA 288871A CA 1108944 A CA1108944 A CA 1108944A
Authority
CA
Canada
Prior art keywords
poly
urea
maleic anhydride
formaldehyde
aqueous
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
CA288,871A
Other languages
English (en)
Inventor
Robert W. Brown
Peter L. Foris
Paul S. Phillips, Jr.
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.)
Appvion Operations Inc
Original Assignee
Appleton Papers Inc
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 Appleton Papers Inc filed Critical Appleton Papers Inc
Application granted granted Critical
Publication of CA1108944A publication Critical patent/CA1108944A/fr
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)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Color Printing (AREA)
CA288,871A 1976-12-30 1977-10-17 Fabrication de capsules Expired CA1108944A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/755,831 US4089802A (en) 1974-07-10 1976-12-30 Capsule manufacture
US755,831 1985-07-15

Publications (1)

Publication Number Publication Date
CA1108944A true CA1108944A (fr) 1981-09-15

Family

ID=25040823

Family Applications (1)

Application Number Title Priority Date Filing Date
CA288,871A Expired CA1108944A (fr) 1976-12-30 1977-10-17 Fabrication de capsules

Country Status (6)

Country Link
JP (1) JPS6012904B2 (fr)
AT (1) AT361894B (fr)
AU (1) AU517421B2 (fr)
BE (1) BE862372R (fr)
CA (1) CA1108944A (fr)
ZA (1) ZA777149B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135038A (en) * 1981-02-13 1982-08-20 Kanzaki Paper Mfg Co Ltd Preparation of microcapsule
JPS6294703U (fr) * 1985-12-04 1987-06-17
JP6827433B2 (ja) 2018-03-02 2021-02-10 株式会社東芝 半導体装置

Also Published As

Publication number Publication date
AU3176677A (en) 1979-06-28
ZA777149B (en) 1978-09-27
AT361894B (de) 1981-04-10
AU517421B2 (en) 1981-07-30
JPS6012904B2 (ja) 1985-04-04
ATA931277A (de) 1980-09-15
JPS5384882A (en) 1978-07-26
BE862372R (fr) 1978-04-14

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Legal Events

Date Code Title Description
MKEX Expiry