Hydrophobic substrate which is able to release a chemical substa

Details Hydrophobic substrate which is able to release a chemical substa Hydrophobic substrate which is able to release a chemical substa

1979-08-15

1981-08-11

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

128130, 260 40R, 260 4222, 424 78, 424 79, 424 81, 424 82, 424 83, 424DIG14, 525 63, 525 64, 525 71, A61F 546

Patent

active

042833256

ABSTRACT:
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.

REFERENCES:
patent: 3803308 (1974-04-01), Zipper

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