Abstract: A microcapsule characterized by comprising a solid pesticide as a core material coated with a wall material which is a resin formed by polycondensation of a sparingly water-soluble melamine-formaldehyde resin type prepolymer (said sparingly water-soluble melamine-formaldehyde resin type prepolymer dissolves 2000 g or less of water therein per 100 g of solid component of the prepolymer at ±25° C.) in the presence of a dispersant which is a condensation product of naphthalenesulfonic acid and/or alkylnaphthalenesulfonic acid and formaldehyde or a salt thereof, a method for producing said microcapsule, and a method for applying said microcapsule are disclosed.
Abstract: The present invention relates to new delivery systems for cyclopropenes in which compositions comprising the cyclopropene and a molecular encapsulation agent complex further comprise additional components which provide slow release of the cyclopropene from the molecular encapsulating agent with water, or release of the cyclopropene from the molecular encapsulating agent with only small amounts of water, or both. The present invention also provides methods to release a cyclopropene from such compositions as well as methods to deliver a cyclopropene compound to a plant to inhibit an ethylene response in the plant.
Abstract: The present invention relates to complexes formed from molecular encapsulation agents such as cyclodextrin, and cyclopropene and its derivatives such as methylcyclopropene, which are capable of inhibiting the ethylene response in plants, wherein the complex is pressure agglomerated.
Abstract: The present invention describes the use of a combination of an agrochemically active compound and a solid carrier material which surrounds the active compound, to suppress antagonistic interactions in a mixture comprising the active compound surrounded by the carrier material, and at least one further agrochemically active compound. Preferred formulations comprising such a combination include herbicides combined with a carrier material together with a safener and/or a growth regulator. Using the formulations according to the present invention, it is possible to suppress antagonistic interactions between different active compounds.
Type:
Application
Filed:
May 10, 2001
Publication date:
May 9, 2002
Inventors:
Hans-Peter Krause, Gerhard Schnabel, Gerhard Frisch, Jochen Wurtz, Udo Bickers, Erwin Hacker, Thomas Auler, Alvaro Melendez, Detlev Haase
Abstract: Microencapsulated compositions containing haloacetanilide herbicides, i.e., acetochlor, are produced by microencapsulation process. The microencapsulated composition performs comparably to nonencapsulated compositions of the same herbicide applied at the same application rates.
Abstract: A microcapsule (or microencapsulated product) having a uniform and smooth coating film and also an excellent performance of gradually liberating the content material is produced at a good particle size distribution while suppressing the occurrence of isolated or aggregated film material, aggregated microcapsules and isolated core material. The production process includes: a first coating step of mixing a water-soluble cationic amino resin and an anionic surfactant in the presence of a hydrophobic core material dispersed in an aqueous medium to coat the dispersed core material with a coacervate of the cationic amino resin and the anionic surfactant; and a second coating step of adding an amino resin prepolymer into an aqueous dispersion liquid containing the coated dispersed core material and polycondensating the amino resin prepolymer to further coat the coated dispersed core material with a polycondensate of the amino resin prepolymer.
Type:
Application
Filed:
January 12, 2001
Publication date:
July 19, 2001
Inventors:
Yutaka Igari, Yuzi Hori, Tsuneo Okamoto
Abstract: The invention relates to methods for increasing and/or prolonging in vivo or in vitro activity of plant growth regulators (PGRs), comprising of locally increasing the concentration of active plant growth regulators in a plant and/or plant part(s) and/or increasing the sensitivity of the plant and/or plant part(s) to the activity of the plant growth regulators. The local increase can for instance take place by administering the PGRs in capsules. The increase in the sensitivity can be brought about by administering elicitors or means which result in the formation of elicitors. By adding both elicitors and (modified, e.g. slow-release) PGRs the induced response can be timed.
Type:
Grant
Filed:
March 13, 1998
Date of Patent:
June 5, 2001
Assignee:
Instituut voor Agrobiologisch en
bodemvruchtbaarheidsonderzoek
Inventors:
Wilhelmus Maria Van der Krieken, Gerrit Smit