Loading patent…
OwnerBo Mattiasson, Igor Galaev +2inventors
InventorsBo Mattiasson, Igor Galaev, Vladimir Lozinsky, Fatima Plieva
Estimating the term…
A separation medium in macroporous gel form is disclosed which is obtainable by cooling an aqueous solution of at least one gel forming polymer to a temperature, at which the solvent in the system is partially frozen with the dissolved substances concentrated in the non-frozen fraction of the solvent, said gel forming polymer being selected from the group consisting of polymers normally forming gels too fast when an aqueous solution thereof is cooled to a temperature wthin a range below OoC to enable the formation of a cryogel and said cooling being carried out in the presence of at least one chaotropic agent in said aqueous solution in order to prevent gel formation before the polymer solution is frozen. The use of said separation medium for diverse separation purposes is also disclosed.
A separation medium in macroporous gel form characterized in being obtainable by cooling an aqueous solution of at least one gel forming polymer to a temperature, at which the solvent in the system is partially frozen with the dissolved substances concentrated in the non-frozen fraction of the solvent, said gel forming polymer being selected from the group consisting of polymers normally forming gels too fast when an aqueous solution thereof is cooled to a temperature within a range below 0° C. to enable the formation of a cryogel and said cooling being carried out in the presence of at least one chaotropic agent in said aqueous solution in order to prevent gel formation before the polymer solution is frozen.
A method for the preparation of a separation medium in macroporous gel form by cooling an aqueous solution of at least one gel forming polymer to a temperature, at which the solvent in the system is partially frozen with the dissolved substances concentrated in the non-frozen fraction of the solvent, characterized in that said gel forming polymer is selected from the group consisting of polymers normally forming gels too fast when an aqueous solution thereof is cooled to a temperature within a range below 0° C. to enable the formation of a cryogel and that said cooling is carried out in the presence of at least one chaotropic agent in said aqueous solution in order to prevent gel formation before the polymer solution is frozen
Dependencies are inferred from the claim text.