FR2194483A1 - Microcapsule prodn - by dispersing soln of high mol wt wall material in volatile solvent in dispersion of core material, and evap solvent - Google Patents

Microcapsule prodn - by dispersing soln of high mol wt wall material in volatile solvent in dispersion of core material, and evap solvent

Info

Publication number
FR2194483A1
FR2194483A1 FR7327382A FR7327382A FR2194483A1 FR 2194483 A1 FR2194483 A1 FR 2194483A1 FR 7327382 A FR7327382 A FR 7327382A FR 7327382 A FR7327382 A FR 7327382A FR 2194483 A1 FR2194483 A1 FR 2194483A1
Authority
FR
France
Prior art keywords
iii
solvent
contg
prodn
soln
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.)
Withdrawn
Application number
FR7327382A
Other languages
French (fr)
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of FR2194483A1 publication Critical patent/FR2194483A1/en
Withdrawn legal-status Critical Current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
    • B01J13/12—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution
    • B01J13/125—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution by evaporation of the solvent
    • 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
    • B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Fats And Perfumes (AREA)
  • Adhesive Tapes (AREA)
  • Color Printing (AREA)

Abstract

Microcapsules contg. a water-insol. liquid (I) are made in an aq. liquid medium (II) held in motion, using a high molecular weight wall material (III) which is insol. in (I) and in (II) but which is sol. in a volatile solvent (IV) which is sol. in (I). The process comprises dispersing a mixture of (III) and (IV) in a medium consisting of (II) contg. dispersed (I) to cause sepn. of (III) at the phase borders, removing (IV) and opt. cross linking (III). Pref. a soln. of a copolymer contg. hydrophilic, hydrophobic and cross-linking groups is made (eg 20-65 wt.% methylmethaceylate, 10-65 wt.% acetylacetic acid esters of mono(meth)acrylates and 0-30 wt.% acrylamide, acrylic acid or vinylpyrrolidone) in an aq. medium contg. a protective colloid such as PVA and the core material, is e.g. an alkylbenzene solvent containing a dye precursor. Products are esp. useful in the prodn. of carbon paper.
FR7327382A 1972-07-31 1973-07-26 Microcapsule prodn - by dispersing soln of high mol wt wall material in volatile solvent in dispersion of core material, and evap solvent Withdrawn FR2194483A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2237503A DE2237503A1 (en) 1972-07-31 1972-07-31 METHOD OF MANUFACTURING MICROCAPSULES

Publications (1)

Publication Number Publication Date
FR2194483A1 true FR2194483A1 (en) 1974-03-01

Family

ID=5852171

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327382A Withdrawn FR2194483A1 (en) 1972-07-31 1973-07-26 Microcapsule prodn - by dispersing soln of high mol wt wall material in volatile solvent in dispersion of core material, and evap solvent

Country Status (10)

Country Link
JP (1) JPS4953569A (en)
AR (1) AR199790A1 (en)
AU (1) AU5853173A (en)
BE (1) BE803046A (en)
DD (1) DD106783A5 (en)
DE (1) DE2237503A1 (en)
FR (1) FR2194483A1 (en)
IT (1) IT990065B (en)
NL (1) NL7310586A (en)
ZA (1) ZA735116B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172119A (en) 1977-03-02 1979-10-23 Basf Aktiengesellschaft Fungicide
WO1994013139A1 (en) * 1992-12-04 1994-06-23 E.I. Du Pont De Nemours And Company Microcapsule formulations of agricultural chemicals

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746893B2 (en) * 1973-01-30 1982-10-06
JPS5815173B2 (en) * 1978-03-09 1983-03-24 工業技術院長 How to prepare microcapsules
WO1982002676A1 (en) * 1981-02-06 1982-08-19 Matkan Josef Dry toner and method of making same
JPS59166966A (en) * 1983-03-14 1984-09-20 Fuji Photo Film Co Ltd Production of capsule toner
IE58110B1 (en) * 1984-10-30 1993-07-14 Elan Corp Plc Controlled release powder and process for its preparation
CN115748297A (en) * 2021-05-26 2023-03-07 刘兴发 Carbon paper with flame retardant property

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172119A (en) 1977-03-02 1979-10-23 Basf Aktiengesellschaft Fungicide
WO1994013139A1 (en) * 1992-12-04 1994-06-23 E.I. Du Pont De Nemours And Company Microcapsule formulations of agricultural chemicals

Also Published As

Publication number Publication date
AR199790A1 (en) 1974-09-30
IT990065B (en) 1975-06-20
BE803046A (en) 1974-01-31
JPS4953569A (en) 1974-05-24
DE2237503A1 (en) 1974-10-03
NL7310586A (en) 1974-02-04
DD106783A5 (en) 1974-07-05
AU5853173A (en) 1975-01-30
ZA735116B (en) 1974-08-28

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Legal Events

Date Code Title Description
RE Withdrawal of published application