RU92016247A - METHOD FOR OBTAINING WATER SUSPENSION OF MICROCAPSULES, SURFACE-ACTIVE SUBSTANCES USED IN THIS METHOD, PHYSIOLOGICAL ACTIVE MEANS FOR PLANTS - Google Patents

METHOD FOR OBTAINING WATER SUSPENSION OF MICROCAPSULES, SURFACE-ACTIVE SUBSTANCES USED IN THIS METHOD, PHYSIOLOGICAL ACTIVE MEANS FOR PLANTS

Info

Publication number
RU92016247A
RU92016247A RU92016247/05A RU92016247A RU92016247A RU 92016247 A RU92016247 A RU 92016247A RU 92016247/05 A RU92016247/05 A RU 92016247/05A RU 92016247 A RU92016247 A RU 92016247A RU 92016247 A RU92016247 A RU 92016247A
Authority
RU
Russia
Prior art keywords
microcapsules
water
plants
immiscible
shell
Prior art date
Application number
RU92016247/05A
Other languages
Russian (ru)
Other versions
RU2089062C1 (en
Inventor
- Хо Ло Шьен
Original Assignee
Циба - Гейги АГ
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 Циба - Гейги АГ filed Critical Циба - Гейги АГ
Publication of RU92016247A publication Critical patent/RU92016247A/en
Application granted granted Critical
Publication of RU2089062C1 publication Critical patent/RU2089062C1/en

Links

Claims (1)

Изобретение относится к способу получения капсул и, в частности приготовления микрокапсул, имеющих оболочку из твердого полимерного вещества и ядро из несмешивающегося с водой вещества. Способ включает приготовление раствора первого реагирующего компонента, требуемого для образования оболочки капсулы в несмешивающемся с водой веществе, затем диспергирование смеси в водной среде, содержащей поверхностно-активное вещество, например соль неполного эфира сополимера стирола и малеинового ангидрида, с образованием эмульсии масло-в-воде, и последующее добавление второго реагирующего компонента, требуемого для образования оболочки капсулы, который является дополнительным к первому компоненту и реагирует с ним в условиях смешивания, за счет чего образуется твердая полимерная оболочка вокруг диспергированного несмешивающегося с водой вещества ядра. Полученная устойчивая водная суспензия микрокапсул может быть использована или непосредственно, или после разбавления водой, или микрокапсулы могут быть выделены из водной фазы.The invention relates to a method for producing capsules and, in particular, the preparation of microcapsules having a shell of a solid polymer substance and a core of a water-immiscible substance. The method involves preparing a solution of the first reactive component required to form the capsule shell in a water-immiscible substance, then dispersing the mixture in an aqueous medium containing a surfactant, for example, a styrene partial ester salt of maleic anhydride, to form an oil-in-water emulsion , and the subsequent addition of the second reactive component, required for the formation of the capsule shell, which is additional to the first component and reacts with it under the conditions mixing of, thereby forming a solid polymer shell around the dispersed water-immiscible core material. The resulting stable aqueous suspension of microcapsules can be used either directly, or after dilution with water, or the microcapsules can be separated from the aqueous phase.
RU9292016247A 1992-01-03 1992-12-30 Method of preparing an aqueous dispersion of microcapsules RU2089062C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US81802992A 1992-01-03 1992-01-03
US07/818029 1992-01-03
US07/818,029 1992-01-03

Publications (2)

Publication Number Publication Date
RU92016247A true RU92016247A (en) 1995-10-27
RU2089062C1 RU2089062C1 (en) 1997-09-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU9292016247A RU2089062C1 (en) 1992-01-03 1992-12-30 Method of preparing an aqueous dispersion of microcapsules

Country Status (16)

Country Link
US (1) US5310721A (en)
EP (1) EP0551796B1 (en)
JP (1) JPH05269367A (en)
KR (1) KR930016140A (en)
AT (1) ATE156728T1 (en)
AU (1) AU651511B2 (en)
BR (1) BR9205208A (en)
CA (1) CA2086583A1 (en)
DE (1) DE69221601T2 (en)
DK (1) DK0551796T3 (en)
HU (1) HUT65767A (en)
IL (1) IL104286A (en)
MX (1) MX9207569A (en)
RU (1) RU2089062C1 (en)
TW (1) TW273499B (en)
ZA (1) ZA9210100B (en)

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