Abstract: A novel protein adsorbent consisting essentially of a porous copolymer obtained by copolymerizing a monomer mixture comprising at least one cyano group-containing monomer and at least one cross-linkable monomer, said copolymer having an average pore diameter (d) of from 40 A to 9,000 A and a total pore volume of from 0.05.sqroot.X ml to 1.5.sqroot.X ml per gram of the copolymer in a dry state, in which X designates the weight proportion of said cross-linkable monomer expressed in terms of the percent by weight based on the total monomers. The present porous copolymer adsorbent has a remarkably high protein adsorbing capacity. The adorbent can advantageously be used for various purposes such as purification and separation of proteins, and removal of proteins. Copolymer-protein composites obtained by adsorption of proteins on the present porous copolymer also are industrially useful and have a wide variety of applications.

Abstract: A hydrocarbon mixture is fed to a system of adsorbents in a plug flow so as to form at least one displacement boundary in the system to accumulate the composition in the vicinity of the boundary. The process is simple to operate and suitable for separation of a hydrocarbon mixture containing components with similar physical and chemical properties such as a mixture of hydrocarbon isomers.

Abstract: A mixture containing formaldehyde and water is separated effectively by contacting with adsorbents of specific type A zeolites containing exchanged cations of the elements from Group IA (4) to (6) or Group IIA (6) or mixture thereof of the Periodic Table of Elements.

Abstract: A mixture of xylenols and cresols is contacted with a zeolite with aperture of 5.5 A or more containing at least one cations selected from lithium, potassium, cesium, rubidium, calcium, barium, strontium, cadmium, chromium, molybdenum, manganese, iron, nickel, cobalt, and ammonium to separate xylenols from cresols.

Abstract: An anion exchange resin particle provided with specific structure as well as specific functional groups is found to be suitable for uranium technology, especially for separation of uranium isotopes.

Abstract: A method of producing a polar, porous polymer comprising polymerizing a monomer mixture comprising:(A) about 2 to about 98 percent by weight of at least one cross-linkable monomer having a plurality of CH.sub.2 .dbd.

Abstract: An anion exchange column, containing anion exchange resin particles with uniform degree of sphericity, restricted average diameter and uniform particle size distribution and having devices for flowing a liquid uniformly, is suitably used for uranium technology, especially for separation of uranium isotopes.