GELS COMPRISING A HYDROPHOBIC MATERIAL

The gel compositions as described herein, are less affected by changes in humidity, are readily formed into complex shapes, and can contain high loadings of the hydrophobic material, even when the material is not highly hydrophobic, and provide a more controlled release of the hydrophobic material....

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Main Authors MARTINEZ GARCIA, Immaculada, SMETS, Johan, JAMES, Craig, O'SULLIVAN, Denis, FRANCO, José, FRATINI, Emiliano, SANTAN, Harshal, VYAS, Rahul, SAINI, Gaurav, FERNANDEZ PRIETO, Susana
Format Patent
LanguageEnglish
French
Published 24.01.2019
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Abstract The gel compositions as described herein, are less affected by changes in humidity, are readily formed into complex shapes, and can contain high loadings of the hydrophobic material, even when the material is not highly hydrophobic, and provide a more controlled release of the hydrophobic material. It is believed that the slow release is achieved by forming the gel to have a tight cross-linked network with small pore-size. The pore size is correlated to the average correlation length as measured using Small Angle X-Ray Scattering (SAXS). By limiting the average correlation length to less than 8 nm, preferably from 0.3 nm to 8 nm, more preferably from 0.3 nm to 4 nm, a long lasting release of the hydrophobic material is achieved, rather than a blooming effect, whereby the hydrophobic material is released in a short burst. Les compositions de gel telles que décrites dans la présente invention, sont moins affectées par des changements d'humidité, sont facilement formées en formes complexes, et peut contenir des charges élevées du matériau hydrophobe, même lorsque le matériau n'est pas fortement hydrophobe, et fournir une libération plus contrôlée du matériau hydrophobe. On pense que la libération lente est obtenue en formant le gel pour avoir un réseau réticulé étanche avec une petite taille de pores. La taille des pores est corrélée à la longueur de corrélation moyenne telle que mesurée à l'aide de la diffusion des rayons X aux petits angles (SAXS). En limitant la longueur de corrélation moyenne à moins de 8 nm, de préférence de 0,3 nm à 8 nm, plus préférentiellement de 0,3 nm à 4 nm, une libération durable du matériau hydrophobe est obtenue, plutôt qu'un effet d'efflorescence, ce par quoi le matériau hydrophobe est libéré dans un court burst.
AbstractList The gel compositions as described herein, are less affected by changes in humidity, are readily formed into complex shapes, and can contain high loadings of the hydrophobic material, even when the material is not highly hydrophobic, and provide a more controlled release of the hydrophobic material. It is believed that the slow release is achieved by forming the gel to have a tight cross-linked network with small pore-size. The pore size is correlated to the average correlation length as measured using Small Angle X-Ray Scattering (SAXS). By limiting the average correlation length to less than 8 nm, preferably from 0.3 nm to 8 nm, more preferably from 0.3 nm to 4 nm, a long lasting release of the hydrophobic material is achieved, rather than a blooming effect, whereby the hydrophobic material is released in a short burst. Les compositions de gel telles que décrites dans la présente invention, sont moins affectées par des changements d'humidité, sont facilement formées en formes complexes, et peut contenir des charges élevées du matériau hydrophobe, même lorsque le matériau n'est pas fortement hydrophobe, et fournir une libération plus contrôlée du matériau hydrophobe. On pense que la libération lente est obtenue en formant le gel pour avoir un réseau réticulé étanche avec une petite taille de pores. La taille des pores est corrélée à la longueur de corrélation moyenne telle que mesurée à l'aide de la diffusion des rayons X aux petits angles (SAXS). En limitant la longueur de corrélation moyenne à moins de 8 nm, de préférence de 0,3 nm à 8 nm, plus préférentiellement de 0,3 nm à 4 nm, une libération durable du matériau hydrophobe est obtenue, plutôt qu'un effet d'efflorescence, ce par quoi le matériau hydrophobe est libéré dans un court burst.
Author JAMES, Craig
SANTAN, Harshal
SAINI, Gaurav
SMETS, Johan
FERNANDEZ PRIETO, Susana
O'SULLIVAN, Denis
VYAS, Rahul
FRATINI, Emiliano
MARTINEZ GARCIA, Immaculada
FRANCO, José
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– fullname: SANTAN, Harshal
– fullname: VYAS, Rahul
– fullname: SAINI, Gaurav
– fullname: FERNANDEZ PRIETO, Susana
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Snippet The gel compositions as described herein, are less affected by changes in humidity, are readily formed into complex shapes, and can contain high loadings of...
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SourceType Open Access Repository
SubjectTerms ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
CANDLES
CHEMISTRY
DETERGENT COMPOSITIONS
DETERGENTS
FATTY ACIDS THEREFROM
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
RECOVERY OF GLYCEROL
RESIN SOAPS
SOAP OR SOAP-MAKING
SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS
USE OF SINGLE SUBSTANCES AS DETERGENTS
Title GELS COMPRISING A HYDROPHOBIC MATERIAL
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