Abstract:
The invention relates to a method for producing a (meth)acrylic anhydride A-C(═O)—O—(O═)C-A, comprising the following steps: a) a step of reacting an anhydride B—C(═O)—O—(O═)C—B with an acid A-COOH, resulting in the formation of mixed anhydride A-C(═O)—O—(O═)C—B and acid B—COOH; and b) a step of reacting the mixed anhydride with A-COOH, resulting in the (meth)acrylic anhydride. According to the invention, reaction steps (a) and (b) are carried out in the presence of hydrated triflic acid, and the anhydride A-C(═O)—O—(O═)C-A is isolated from the reaction medium produced in step (b) as follows: e1) heavy compounds having a volatility less than or equal to that of the anhydride A-C(═O)—O—(O═)C-A are separated from the reaction medium, said compounds including the anhydride and the hydrated triflic acid; e2) the anhydride is separated from the heavy compounds by difference in volatility.
Abstract:
The present disclosure relates to compositions comprising from 10 to 90 wt % of a mixture M of compounds A having formula R1CONR2R3, wherein R1, R2, and R3 are described herein, and from 10 to 90 wt % of at least one compound B selected from the amide solvents, optionally combined with an ester solvent, and methods for producing the same. The present disclosure further relates to phytosanitary formulations comprising such compositions.
Abstract:
The present invention provides a method for increasing the growth of a plant by contacting a seed of the plant with a composition comprising a guar gum having an average molecular weight of between 2,000 Daltons and 90,000 Daltons. The present invention also provides a seed treated with a guar gum having an average molecular weight of between 2,000 Daltons and 90,000 Daltons.
Abstract:
The present disclosure relates to compositions comprising from 10 to 90 wt % of a mixture M of compounds A having formula R1CONR2R3, wherein R1, R2, and R3 are described herein, and from 10 to 90 wt % of at least one compound B selected from the amide solvents, optionally combined with an ester solvent, and methods for producing the same. The present disclosure further relates to phytosanitary formulations comprising such compositions.
Abstract:
A seed or seedling is coated with a cross-linked biopolymer and, optionally, a second binder selected from underivatized guar, cationic hydroxypropyl guar, polyacrylamide, poly(methacrylic acid), poly(acrylic acid), polyacrylate, poly(ethylene glycol), polyethyleneoxide, polyamide, hydroxypropyl guar, carboxymethyl guar, carboxymethylhydroxypropyl guar, underivatized starch, cationic starch, corn starch, wheat starch, rice starch, potato starch, tapioca, waxy maize, sorghum, waxy sarghum, sago, dextrin, chitin, chitosan, xanthan gum, carageenan gum, gum karaya, gum arabic, pectin, cellulose, hydroxycellulose, hydroxyalkyl cellulose, hydroxyethyl cellulose, carboxymethylhydroxyethyl cellulose, or hydroxypropyl cellulose. The seed coating composition is characterized by a dust value, as measured using a Heubach dustmeter device, which is lower by at least 30% as compared to an analogous composition that does not contain the crosslinked biopolymer.
Abstract:
The object of the present invention is phytosanitary compositions comprising an active phytosanitary product and an ether-amide compound. The ether-amide compound may natively be present as a solvent, co-solvent, crystallization inhibitor or an agent for increasing bioactivity of the active phytosanitary product.