Centre National De La Recherche Scientifique

Université De Haute-alsace

Agro Innovation International

Centre National De La Recherche Scientifique-cnrs

Onet Technologies Nd

Lionel Limousy

Jean-Claude Yvin

Jocelyne Brendle

Anne Maillard

Sylvain K Pluchon

Patrick Dutournie

Marion Bruneau

Simona Bennici

Grégoire Auge

Thomas Thiebault

The present invention concerns a process for preparing a composite of porous material/compound/hybrid organic-inorganic material having a 2:1 lamellar structure, said hybrid material having the following general formula I:Na[(Mg)(Al(RSi))O(OH)]&#x2003;&#x2003;(I)whereinx is a number such that 0&#x2264;x&#x3c;1.2 andR represents a C-Calkyl group, an aryl group, a (C-Calkyl)aryl group or an O&#x2014;(C-Calkyl) group, it being possible for the alkyl group to be substituted with a group chosen from a phenyl, vinyl, aminopropyl or mercaptopropyl group,and said compound being chosen from the group constituted of at least one active substance and at least one microorganism and mixtures thereof the process comprising:a) the step of sol-gel synthesis of the hybrid organic-inorganic material having a 2:1 lamellar structure in the presence of the compound and of the porous material saturated with the compound;b) the recovery of the composite. It also concerns a composite obtainable by means of this process, a composition comprising it and its use in particular for the fertilization of plants.

Composite based on a lamellar material and a porous material comprising an active substance and/or a microorganism

The present invention relates to a method for encapsulating a compound selected from the group consisting of at least one active substance, at least one microorganism and mixtures thereof in an organic-inorganic hybrid material of 2:1 lamellar structure, said material having the following general formula I:Na[(Mg)(Al(RSi))O(OH)]&#x2003;&#x2003;(I)the method comprising:a) sol-gel synthesis of the organic-inorganic hybrid material of 2:1 lamellar structure in the presence of the compound;b) recovery of the compound encapsulated in the material of general formula I. It further relates to the compound encapsulated in an organic-inorganic hybrid material of 2:1 lamellar structure of general formula I, a composition comprising same and its use for fertilizing, feeding, stimulating growth and/or prophylaxis of plants and/or improvement of the physical, chemical and/or biological properties of the soil or of the culture substrate of plants.

Encapsulation of active substances and/or micro-organisms in a lamellar material

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Lionel Limousy