JPS5615837A - Removal of residual formaldehyde - Google Patents

Removal of residual formaldehyde

Info

Publication number
JPS5615837A
JPS5615837A JP9198179A JP9198179A JPS5615837A JP S5615837 A JPS5615837 A JP S5615837A JP 9198179 A JP9198179 A JP 9198179A JP 9198179 A JP9198179 A JP 9198179A JP S5615837 A JPS5615837 A JP S5615837A
Authority
JP
Japan
Prior art keywords
formaldehyde
micro capsules
resorcin
urea
film
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.)
Pending
Application number
JP9198179A
Other languages
Japanese (ja)
Inventor
Shozo Maeda
Toshizo Iida
Mitsuru Fuchigami
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.)
Mitsubishi Paper Mills Ltd
Original Assignee
Mitsubishi Paper Mills 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 Mitsubishi Paper Mills Ltd filed Critical Mitsubishi Paper Mills Ltd
Priority to JP9198179A priority Critical patent/JPS5615837A/en
Publication of JPS5615837A publication Critical patent/JPS5615837A/en
Pending 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
    • B01J13/20—After-treatment of capsule walls, e.g. hardening

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

PURPOSE:To remove excessive formaldehyde without causing thickening and colorization in the liquid system and also any damage to the wall film of capsule by adding urea and resorcin to the suspension of micro capsules after the completion of capsulation. CONSTITUTION:In the manufacture of micro capsules by using formaldehyde as a film wall-forming material, urea and resorcin are jointly added to the suspension of micro capsules after capsulation has been finished, whereupon excessive formaldehyde present in the dispersion of micro capsules is reacted with urea and resorcin added and thereby deviation of equilibrium in the composition of the wall film can be prevented. Thus, formaldehyde can be removed without causing thickening and colorization in the liquid system and also any damage to the wall film.
JP9198179A 1979-07-19 1979-07-19 Removal of residual formaldehyde Pending JPS5615837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9198179A JPS5615837A (en) 1979-07-19 1979-07-19 Removal of residual formaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9198179A JPS5615837A (en) 1979-07-19 1979-07-19 Removal of residual formaldehyde

Publications (1)

Publication Number Publication Date
JPS5615837A true JPS5615837A (en) 1981-02-16

Family

ID=14041662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9198179A Pending JPS5615837A (en) 1979-07-19 1979-07-19 Removal of residual formaldehyde

Country Status (1)

Country Link
JP (1) JPS5615837A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009202123A (en) * 2008-02-28 2009-09-10 Mitsubishi Paper Mills Ltd Microcapsule
EP1797947A3 (en) * 2005-12-15 2010-03-10 INTERNATIONAL FLAVORS & FRAGRANCES, INC. Encapsulated active material with reduced formaldehyde potential
EP1945729B1 (en) * 2005-10-05 2012-05-02 Dynea OY Low emission adhesive system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1945729B1 (en) * 2005-10-05 2012-05-02 Dynea OY Low emission adhesive system
EP1797947A3 (en) * 2005-12-15 2010-03-10 INTERNATIONAL FLAVORS & FRAGRANCES, INC. Encapsulated active material with reduced formaldehyde potential
EP2545988A3 (en) * 2005-12-15 2016-01-13 International Flavors & Fragrances, Inc. Encapsulated active material with reduced formaldehyde potential
JP2009202123A (en) * 2008-02-28 2009-09-10 Mitsubishi Paper Mills Ltd Microcapsule

Similar Documents

Publication Publication Date Title
ZA80553B (en) Process for the preparation of tablets with retarded liberation of the active agent,in which tablets the rate of liberation of the active agent is predetermined
CA1009096A (en) Carbon-coated articles and method of making same
IE42604L (en) Pharmaceutical preparation in the form of a foil
IL44030A (en) Imidazolymethyl and thiazolylmethyl sulphoxides and process for their preparation
DK132990C (en) PROCEDURE FOR THE PREPARATION OF A CHEMICAL PLANT MATTER PRODUCT BY PLANT CELL SYNTHESIS IN SUSPENSION CULTURE
AT320100B (en) Process for the preparation of new azo reactive dyes
JPS5615837A (en) Removal of residual formaldehyde
CA977776A (en) Process for the preparation of urea
CH610593A5 (en) Process for preparing disperse dyes of the monoazo series
EG11891A (en) Process for preparing of pyrimidinylthionophosphonic acid esters,process for their preparation and their use as insecticides,acaricides and nematocides
JPS5615835A (en) Removal of formaldehyde
HU169444B (en) Herbicides containing o-(aminosulphonil) -glykol acidanilides and process for production of the active substance
EP0024667A3 (en) Process for the manufacture of fluid dyestuff preparations, and their use
BR7310244D0 (en) PROCESS FOR THE PREPARATION OF NEW FIBER REACTIVE DYES
AR196609A1 (en) METHOD FOR PREPARING SPHERULES FROM A MELTED OR LIQUID SUBSTANCE
ZA741842B (en) High permeability cellulose fibers containing enzymes and process for the preparation thereof
DE2964175D1 (en) Coloured polymeric compounds, process for their preparation and their application to the dyeing of paper
EG12138A (en) Process for preparing of o-pyrazolopyrimidin-ethionothiolphosphoric acid esters and their use as insecticides,acaricides and nematicides
JPS5339977A (en) Preparation of microcapsule
EG11022A (en) 1-alkylideneaminouracils process for their preparation and their use as herbicides
CH542760A (en) Packaging containers and process for their manufacture
JPS51140872A (en) A filter medium holding catalysts and a process for production of it
ZA754416B (en) New haptene derived from progesterone, process for preparing them and their use in the preparation of antigens
AU459589B2 (en) Phosphorous containing imino formic acid alkyl esters, process for their preparation and their use as insecticides and acaricides
CH613717A5 (en) Process for the preparation of azo dyes of the triaminopyridine series