Back to results
US 4,283,325 AGranted
Hydrophobic substrate which is able to release a chemical substance
AssigneeCommissariat a l'Energie Atomique
InventorsJeanne Berthet, Gilbert Gaussens
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeCommissariat a l'Energie Atomique
InventorsJeanne Berthet, Gilbert Gaussens
Estimating the term…
Hydrophobic substrate which can release at least one chemical substance, wherein it comprises a hydrophobic polymer matrix in which are homogeneously distributed inclusions of polymerized compounds of a different type to the said hydrophobic polymer and inclusions of the said substance, the polymerized compound inclusions forming in the said matrix a stable and continuous system in contact with the inclusions of the said substance. Process for the preparation of a hydrophobic substrate able to release a chemical substance, wherein it comprises forming inclusions of polymerized compounds in a hydrophobic polymer powder by grafting onto the latter a monomer of a different type to the said hydrophobic polymer, homogeneously mixing the grafted powder obtained in this way with a powder of the said substance and bringing the mixture into the form of a substrate by hot shaping it.
A hydrophobic substrate adapted to release therefrom at least one chemical substance comprising, a hydrophobic polymer matrix, first inclusions and second inclusions homogeneously distributed in the polymeric matrix, said first inclusions comprising a polymeric material which is different from the polymer matrix and forms a stable and continuous system in contact with said inclusions, said second inclusions comprising at least one solid state chemical substance.
A process for the preparation of a hydrophobic substrate able to release a chemical substance, wherein it comprises:
A process according to claimm 12, wherein the monomer is a hydrophilic monomer.
Dependencies are inferred from the claim text.