Combinations containing PVA and certain herbicides with improved properties
Inventors
LORENTZ, Lothar • Deckwer, Roland • Sachau, Stefan • Bickers, Udo • TELSCHER, MARKUS • KAZMIERCZAK, ANGELA
Assignees
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Publication Number
US-12342815-B2
Publication Date
2025-07-01
Expiration Date
Abstract
The present invention relates to the technical field of crop protection. More specifically, the invention relates to combinations of (I) polyvinyl alcohol (PVA) and (II) a composition comprising one or more water soluble herbicidal active ingredients and certain further constituents, said combination having improved properties, in particular regarding rainfastness and/or herbicidal efficacy. The invention also relates to the use of such combinations.
Core Innovation
The invention relates to a combination comprising constituent (I) and constituent (II). Constituent (I) comprises one or more polyvinyl alcohols having a degree of polymerization in a range of 250 to 500, and constituent (II) comprises constituents (a) and (b), wherein constituent (a) comprises one or more water-soluble herbicidal active crop protectant ingredients and constituent (b) comprises one or more C10-C16 fatty alcohol diethylene glycol ether sulfate salts and/or C8-C12 alkylpolyglucosides with a degree of polymerization of less than 5, and/or C12-C16 alkyl amine ethoxylates with 2 to 10 ethylene oxide (EO) units.
The combination specifies a ratio of a total amount of constituent (I) to a total amount of constituent (II) in a range of from 1:30 to 1:12, based on a total weight of the combination. In constituent (II), a ratio by weight of a total amount of constituent (a) to a total amount of constituent (b) is in a range of from 10:1 to 1:6.
Constituent (a) comprises or consists of one or more active ingredients selected from glufosinate and salts thereof, glyphosate and salts thereof, MCPA and salts thereof, dicamba and salts thereof, 2,4-D and salts thereof, and dichlorprop and salts thereof. The combination is characterized by improved rainfastness as compared to a composition comprising constituent (II) but not constituent (I).
Claims Coverage
The document identifies one independent claim with additional dependent claims refining ratios, composition details for constituents (a) and (b), and particular forms. The inventive features center on combining polyvinyl alcohol (constituent (I)) with a defined herbicidal composition (constituent (II)) and achieving improved rainfastness via defined weight ratios and surfactant and active ingredient constraints.
Polyvinyl alcohol and herbicidal composition with defined constituents (I) and (II)
A combination comprising constituents (I) and (II), wherein (I) comprises one or more polyvinyl alcohols with a degree of polymerization in a range of 250 to 500, and (II) comprises (a) one or more water-soluble herbicidal active crop protectant ingredients and (b) one or more C10-C16 fatty alcohol diethylene glycol ether sulfate salts and/or C8-C12 alkylpolyglucosides with a degree of polymerization of less than 5, and/or C12-C16 alkyl amine ethoxylates with 2 to 10 ethylene oxide (EO) units.
Weight ratio of constituent (I) to constituent (II) for rainfastness
A ratio of a total amount of constituent (I) to a total amount of constituent (II) in a range of from 1:30 to 1:12, based on a total weight of the combination.
Weight ratio of herbicidal actives (a) to surfactant system (b) within constituent (II)
In constituent (II), a ratio by weight of a total amount of constituent (a) to a total amount of constituent (b) in a range of from 10:1 to 1:6.
Defined water-soluble herbicidal active ingredient selection for constituent (a)
Constituent (a) comprises or consists of one or more active ingredients selected from glufosinate and salts thereof, glyphosate and salts thereof, MCPA and salts thereof, dicamba and salts thereof, 2,4-D and salts thereof, and dichlorprop and salts thereof.
Improved rainfastness versus composition lacking polyvinyl alcohol
The composition exhibits improved rainfastness as compared to a composition comprising constituent (II) but not constituent (I).
The claim coverage is consistently tied to a polyvinyl alcohol/herbicidal-active-and-surfactant combination with specific constituent definitions and weight-ratio constraints, and the distinguishing outcome is improved rainfastness compared to an otherwise similar composition lacking constituent (I).
Stated Advantages
Improved rainfastness as compared to a composition comprising constituent (II) but not constituent (I).
Documented Applications
No documented applications found
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