Rhone-Poulenc Sante

A.e.c. Societe De Chimie Organique Et Biologique

Rhone-Poulenc Nutrition Animale

Andre Cartillier

Pierre Autant

Paul Bourrain

Raymond Pigeon

Robert E Sparks

Jean-Pierre Quentin

Norbert S Mason

Pierre Ardaillon

Autant Pierre

Process for polishing granulates of active principles

A composition which is stable in a medium in which the pH is greater than or equal to 5.5 and which permits the release of an active substance in a medium in which the pH is less than or equal to 3.5, comprising the active substance, which contains inclusions of, or which is completely or partially covered by, a pH sensitive material whose extent and/or rate of swelling is greater in an acidic medium than in a neutral medium, and a coating of a hydrophobic layer.

Composition for feeding ruminants

A composition for coating a biologically active substance, which is stable in a medium with a pH greater than or equal to 5 and which enables the active substance to be released in a medium with a pH less than or equal to 3.5, consisting of a basic amino copolymer (preferably vinyl-pyridine/styrene copolymer) and a hydrophobic substance with a melting point greater than 60.degree. C. (preferably stearic acid), the hydrophobic substance content being between 50 and 90% of the total mass of the coating, and granules comprising a nucleous containing the biologically active substance, coated with this composition.

Compositions for coating feedstuff additives for ruminants and feedstuff

A composition for coating a biologically active substance which is stable in a medium in which the pH is greater than or equal to 5 and which permits the release of the active substance in a medium in which the pH is less than or equal to 3.5, comprises a film-forming, water-insoluble binder which possesses controlled hydrophilicity and is optionally slightly sensitive to pH variations, and a substance which is sensitive to pH variations (e.g. an inorganic filler, simple aminated substance, basic polymer or copolymer, chitosan). Pellets for feeding to ruminants consist of a core containing the biologically active substance, e.g. methionine or lysine, coated with this substance.

Compositions for coating feeding stuff additives intended for ruminants

Composition for feeding ruminants, containing a water-soluble biologically active substance which is stable in a medium whose pH is greater than or equal to 5 and which permits the release of the active substance in a medium whose pH is less than 3.5, comprising:

Composition for feeding ruminants containing a biologically active

Composition for coating a biologically active substance, which is stable in a medium of which the pH is greater than or equal to 5, and which permits the release of the active substance in a medium of which the pH is less than or equal to 3.5, and biologically active substances when surrounded by this composition.

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Commentry, France

Andre Cartillier