US10358532B2 – July 23, 2019 – Method for producing a non-porous composite material that is water-absorbent and lipid-absorbent for active liquid compositions

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Inventors :

René Chelle; David Nguyen; Arnaud Vilbert

Owner :

C08J3 / 12; A01N25 / 08; A01N25 / 12; A01N37 / 40; B29B9 / 12; B29B9 / 16; C08L97 / 02

Application Number :

US15544449

Document Number :

US10358532B2

Priority Date :

January 20, 2016

Filing Date :

January 20, 2016

Date of Grant/ Publication :

July 23, 2019

Class :

AB7 INNOVATION S.A.S.U.

Abstract

The subject matter of the present invention is a method for producing a biodegradable, non-porous composite material made water-absorbent and/or lipid-absorbent, used for obtaining diversely shaped solid objects to be subsequently loaded with active liquid hydrophilic and/or lipophilic compositions comprising at least one active ingredient intended to be delivered into an environment in a controlled and continuous manner.

Claim(s)

1. A method of making a non-porous biodegradable composite material that is made water-absorbent and/or lipid-absorbent for obtaining diversely shaped solid objects and to be subsequently loaded with a hydrophilic liquid composition or a lipophilic liquid composition comprising an active ingredient intended to be delivered into an environment in a controlled and continuous manner, comprising: (a) selecting a base solid material or a mixture of a plurality of base solid materials, wherein the base solid material comprises lignocellulosic, glucidic, or protidic biopolymers of natural or synthetic origin; (b) mixing the base solid material or the mixture of a plurality of base solid materials with a solid cohesion co-formulant or a solid coabsorbant; (c) pulverizing a mixture of solid materials obtained in step (b); (d) wetting the mixture obtained in step (c) at a moisture level between 9% and 13.5%; (e) adding a liquid cohesion co-formulant or a liquid coabsorbant to the wetted mixture obtained in step (d) to get a fine powder or a meal; (f) stocking the fine powder or the meal obtained in step (e) for maturation thereof; (g) shaping the fine powder or meal obtained in step (f) into water-absorbent and/or lipid-absorbent non-porous solid objects; (h) stocking the non-porous water-absorbent and/or lipid-absorbent solid objects obtained in step (g) in moisture-proof sealed containers; subsequently incorporating the lipophilic liquid composition or the hydrophilic liquid composition in the non-porous solid objects obtained in step (h) resulting in a solid object; (j) optionally, coating the solid object obtained in step (i); and (k) stocking the solid object obtained in (i) or if applicable in (j) in a sealed container; wherein the active ingredient is a fertilizer, a biostimulant, a plant protection substance, a herbicide, a biocide, an insecticide, an insect repellent, an attractant, a repellent, a pheromone, an antiparasitic, an anti-pest, a rodenticide, a fragrance, an essential oil, a plant extract, or a mixture thereof.

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