Abstract: The disproportionation of olefins is effected by contacting the olefin with an activator and a catalyst comprising an ion exchange resin and an organic linking compound having at least one resin-compatible moiety ionically bonded to said resin and further having at least one metal complexible moiety selected from the group consisting of trivalent nitrogen, trivalent phosphorus, trivalent arsenic, trivalent bismuth and trivalent antimony complexed to a metal selected from the group consisting of molybdenum, tungsten and rhenium.

Abstract: Internal olefins are hydroformylated to linear aldehydes in substantial amounts by contacting the internal olefins with hydrogen, carbon monoxide and a catalyst comprising a ligand stabilized ionic platinum compound of the general formula PtCl(CO)(Ligand).sub. 2.sup.+ An.sup.- complexed with a modifying metal halide selected from tin, zinc, or germanium halides.

Abstract: A composition comprising an ion exchange resin, a metal selected from the transition group of elements bound to said resin and an organic linking compound which has at least one moiety which is ionically bonded to said resin and which further has at least one moiety which is coordinately bonded to said metal.

Abstract: A composition comprising an ion exchange resin and an organic linking compound having at least one resin-compatible moiety ionically bound to said resin and further having at least one metal complexible moiety selected from the group consisting of trivalent nitrogen, trivalent phosphorus, trivalent arsenic, trivalent bismuth and trivalent antimony complexed to a metal selected from Group IVB, VB, VIB, VIIB, VIII and IB metals, said composition being useful in heterogeneous catalysis.

Abstract: 2,3-Butanedione impurity is removed from epichlorohydrin by contacting the impurity containing epichlorohydrin with a macroreticular poly(t-butyl acrylate) resin having a pore volume of about 0.5 ml/ml, an average pore diameter of about 90 angstroms and a surface area of about 450 m.sup.2 /gm.

Abstract: Beta-chloroacrolein and 5,6-epoxyhexene-1 impurities present in minor amounts in epichlorohydrin are selectively removed with minimal concomitant destruction of epichlorohydrin by hydrogenation in the presence of a catalyst comprising rhodium, platinum or palladium deposited on a non-acidic, refractory support.

Abstract: Meta-phenoxytoluene is oxidized by selenium dioxide in the presence of a dehydration agent to yield meta-phenoxy-benzaldehyde containing less than 250 ppm dissolved selenium at a selectivity based on the toluene of about 90% or better.

Abstract: Disclosed herein is a unique carrier for mounting on a rotatable spindle an annular saw blade possessing a cutting edge on its inner periphery and a plurality of annularly distributed mounting holes. The carrier includes a chuck for mounting on the spindle and for clamping the blade to the chuck. Formed in the annular clamp are a plurality of screw holes disposed for alignment with others of the mounting holes. The screw holes are threaded to receive mounting screws and have minimum diameters smaller than those of the mounting holes with which they are aligned while the alignment holes have minimum diameters equal to those of the mounting holes with which they are aligned. Centering of the blade on the annular clamp is accomplished by merely passing through the mated alignment and mounting holes an alignment tool having a diameter equal thereto. Subsequently, the clamping of the blade is achieved by inserting and tightening mounting screws in the mated screw and mounting holes.