Oridion Medical 1987 Ltd.

Amos Ophir

Joshua Lewis Colman

Eyal Cohen

David Dishon

Gershon Levitsky

Moshe Rakhman

Tehila Faiglin

There is provided herein a dryer polymer substance adapted to pervaporate a fluid (such as water, water vapor or both), the polymer substance includes: a porous support member having a plurality of pores, wherein at least a portion of the pores are filled with a cross-linked co-polymer comprising (i) a cationic monomer and an anionic monomer, (ii) a zwitterionic monomer, or a combination thereof. The substance may include a membrane or a tube. There is further provided herein a process for the preparation of a dryer polymer substance adapted to pervaporate a fluid (such as water, water vapor or both), the process includes impregnating into at least a portion of the pores of a porous support member a solution which comprises: (i) a cationic monomer and an anionic monomer, (ii) a zwitterionic monomer, or a combination of (i) and (ii), graft co-polymerizing the anionic monomer and the cationic monomer and/or the zwitterionic monomer within at least a portion of the pores to form a co-polymer, and cross-linking the co-polymer, such that the pores of the support member are at least partially grafted with a cross-linked co-polymer bound to the support member.

Drying substances, preparation and use thereof

There is provided herein a dryer polymer substance comprising a polymer grafted with a compound having sulfonic groups, wherein the substance is adapted to pervaporate a fluid such as water, water vapor or both. There is further provided a process for the preparation of a dryer polymer substance adapted to pervaporate a fluid, the process includes processing a polymer into a desired form, activating at least a portion of the polymer, and grafting the activated portion of the polymer with a compound having groups adapted to be sulfonated.

There is provided herein a dryer polymer substance including a hetero-phase polymer composition including two or more polymers wherein at least one of the two or more polymers include sulfonic groups, wherein the substance is adapted to pervaporate a fluid. The fluid may include water, water vapor or both. There is also provided herein a process for the preparation of a dryer polymer substance adapted to pervaporate a fluid (such as water, water vapor or both) the process includes mixing two or more polymers, wherein at least one of the two or more polymers may include groups which are adapted to be sulfonated, to produce a hetero-phase polymer composition and processing the polymer blend into a desired form.

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Karkur, Israel

Amos Ophir