NZ297679A - process for forming microcapsules by interfacial polycondensation and then spray-drying microcapsules in the presence of polyvinylalcohol - Google Patents

process for forming microcapsules by interfacial polycondensation and then spray-drying microcapsules in the presence of polyvinylalcohol

Info

Publication number
NZ297679A
NZ297679A NZ297679A NZ29767995A NZ297679A NZ 297679 A NZ297679 A NZ 297679A NZ 297679 A NZ297679 A NZ 297679A NZ 29767995 A NZ29767995 A NZ 29767995A NZ 297679 A NZ297679 A NZ 297679A
Authority
NZ
New Zealand
Prior art keywords
microcapsules
pva
interfacial polycondensation
polyvinylalcohol
spray
Prior art date
Application number
NZ297679A
Inventor
Patrick Joseph Mulqueen
Steven Duff Lubetkins
Geoff Smith
Original Assignee
Dow Agrosciences Llc
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 Dow Agrosciences Llc filed Critical Dow Agrosciences Llc
Publication of NZ297679A publication Critical patent/NZ297679A/en

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
    • B01J13/14—Polymerisation; cross-linking
    • B01J13/16—Interfacial polymerisation
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
    • A01N25/28—Microcapsules or nanocapsules
    • 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
    • B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
    • B01J13/043—Drying and spraying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

A process for the microencapsulation of various materials, in particular pesticidal materials, to produce both wet and dry formulations is claimed. In particular, the invention relates to encapsulating such materials by incorporating a PVA into an interfacial polycondensation system for producing microcapsules, and subsequently spray drying the resulting microcapsules in the presence of the PVA, and optionally a further quantity of PVA which may be the same or different from the one adopted in the microencapsulation step, so that the encapsulated product can be diluted in water, in order to produce aqueous pesticidal compositions, which can be applied by conventional spray techniques.
NZ297679A 1995-01-19 1995-11-30 process for forming microcapsules by interfacial polycondensation and then spray-drying microcapsules in the presence of polyvinylalcohol NZ297679A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9501017.9A GB9501017D0 (en) 1995-01-19 1995-01-19 Microencapsulation process and product
PCT/US1995/015543 WO1996022159A1 (en) 1995-01-19 1995-11-30 Microencapsulation process and product

Publications (1)

Publication Number Publication Date
NZ297679A true NZ297679A (en) 1999-11-29

Family

ID=10768235

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ297679A NZ297679A (en) 1995-01-19 1995-11-30 process for forming microcapsules by interfacial polycondensation and then spray-drying microcapsules in the presence of polyvinylalcohol

Country Status (14)

Country Link
EP (1) EP0804284A1 (en)
JP (1) JP4155411B2 (en)
KR (1) KR19980701505A (en)
CN (1) CN1096882C (en)
AU (1) AU716412B2 (en)
BR (1) BR9510518A (en)
CA (1) CA2209630A1 (en)
CZ (1) CZ212597A3 (en)
GB (1) GB9501017D0 (en)
HU (1) HUT77646A (en)
NZ (1) NZ297679A (en)
PL (1) PL321376A1 (en)
UA (1) UA48160C2 (en)
WO (1) WO1996022159A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9615158D0 (en) * 1996-07-19 1996-09-04 Dowelanco Process for preparing storage-stable pesticide dispersion
US20020197469A1 (en) 1998-10-26 2002-12-26 Richard Roy Clikeman Particles and a process for preparing the same
JPH11322587A (en) * 1998-05-18 1999-11-24 Sumitomo Chem Co Ltd Microcapsulation of physiologically active substance solid at room temperature and microcapsule composition obtained thereby
FR2867395B1 (en) † 2004-03-15 2006-06-16 Rhodia Chimie Sa DRY EMULSION, PROCESS FOR PREPARING THE SAME, AND USES THEREOF
CN101856019A (en) * 2010-06-04 2010-10-13 广东省粮食科学研究所 Novel grain storage pest slow-release pesticide and preparation method thereof
TWI556737B (en) * 2011-02-11 2016-11-11 陶氏農業科學公司 Improved insecticide formulations
BR102012027933A2 (en) * 2011-11-01 2015-11-17 Dow Agrosciences Llc stable pesticide compositions
UA123892C2 (en) 2012-07-27 2021-06-23 Фмк Корпорейшн Formulations of clomazone
US10584074B2 (en) * 2017-03-17 2020-03-10 Dow Agrosciences Llc Microencapsulated nitrification inhibitor compositions
CN111972422B (en) * 2019-05-21 2022-10-25 江苏龙灯化学有限公司 Weeding composition containing microcapsules and preparation method and application thereof
CN110876378A (en) * 2019-12-11 2020-03-13 利民化学有限责任公司 Intelligent microcapsule suspending agent and preparation method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1538075A (en) * 1975-03-24 1979-01-10 Champion Paper Co Ltd Formation of microcapsules by interfacial cross-linking and microcapsules produced thereby
ATE77916T1 (en) * 1985-09-13 1992-07-15 Ciba Geigy Ag PROCESS FOR PRODUCTION OF MICROCAPSULES.
EP0252896A3 (en) * 1986-07-09 1990-05-23 Monsanto Company Water-dispersible granules and process for the preparation thereof
US5225118A (en) * 1990-08-15 1993-07-06 Boise Cascade Corporation Process for manufacturing polyurea microcapsules and product therefrom
US5283153A (en) * 1992-04-15 1994-02-01 Xerox Corporation Encapsulated toner processes
KR100313589B1 (en) * 1993-02-09 2002-11-29 노바티스 아게 Process for the preparation of microcapsules

Also Published As

Publication number Publication date
WO1996022159A1 (en) 1996-07-25
GB9501017D0 (en) 1995-03-08
PL321376A1 (en) 1997-12-08
AU716412B2 (en) 2000-02-24
UA48160C2 (en) 2002-08-15
CA2209630A1 (en) 1996-07-25
BR9510518A (en) 1998-07-07
JPH11500346A (en) 1999-01-12
CN1173145A (en) 1998-02-11
MX9705484A (en) 1997-10-31
HUT77646A (en) 1998-07-28
EP0804284A1 (en) 1997-11-05
JP4155411B2 (en) 2008-09-24
CN1096882C (en) 2002-12-25
AU4290096A (en) 1996-08-07
CZ212597A3 (en) 1997-12-17
KR19980701505A (en) 1998-05-15

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Legal Events

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Free format text: THE OWNER HAS BEEN CORRECTED TO 877722, DOW AGROSCIENCES LLC, 9330 ZIONSVILLE ROAD, INDIANAPOLIS, INDIANA 46268, US

Effective date: 20140311

EXPY Patent expired