Abstract: A putter golf club wherein the upstanding shaft is in a vertical plane extending transversely through the club head and the sole of the club head is forwardly and upwardly inclined at an angle of about three degrees relative to a horizontal plane extending through the club head. When the club is held with the sole resting flat on the playing surface the grip at the top of the shaft will be ahead of the striking force of the club, promoting an inside back stroke.

Abstract: A reduced charge montmorillonite pigment useful as a color-former in record material, especially pressure-sensitive carbonless copying record systems. The pigment is produced by replacing exchangeable cations of a selected dioctahedral montmorillonite crude clay (exemplified by certain bentonite clays) with a predetermined amount of lithium ions, mildly heating the lithium-exchanged montmorillonite to collapse irreversibly the montmorillonite structure, and grinding the heat-treated material to pigment-size particles, the grinding preferably being carried out in a fluid energy mill. When the pigment particles are coated on paper, the coated sheets produce stabilized intense images when printed with a solution of crystal violet lactone (CVL) dye precursor and thus may be used in record material with CVL without employing secondary slow acting dyes such as benzoyl leuco methylene blue. The sheets are also useful with other colorless or substantially colorless dye precursors.

Abstract: A reduced charge montmorillonite pigment useful as a colorformer in record material, especially pressure-sensitive carbonless copying record systems. The pigment is produced by replacing exchangeable cations of a selected dioctahedral montmorillonite crude clay (exemplified by certain bentonite clays) with a predetermined amount of lithium ions, mildly heating the lithium-exchanged montmorillonite to collapse irreversibly the montmorillonite structure, and grinding the heat-treated material to pigment-size particles, the grinding preferably being carried out in a fluid energy mill. When the pigment particles are coated on paper, the coated sheets produce stabilized intense images when printed with a solution of crystal violet lactone (CVL) dye precursor and thus may be used in record material with CVL without employing secondary slow acting dyes such as benzoyl leuco methylene blue. The sheets are also useful with other colorless or substantially colorless dye precursors.

Abstract: An insolubilized mineral-supported enzyme composite having outstanding catalytic activity and mechanical stability comprises an enzyme covalently attached to silanized porous, attrition-resistant granules of heat-activated attapulgite clay.

Abstract: Disclosed is a method for subjecting a finely divided solid to a series of processing steps on a single horizontal vacuum belt filter wherein the processing includes a liquid-solid mass transfer function, such as ion-exchange, carried out by percolation, and this step is followed by at least one step, such as washing, in which rapid passage of a large volume of liquid through the solid takes place. The method is used to ion-exchange zeolitic microspheres in the production of a fluid cracking catalyst.

Abstract: Naturally-occurring hydrated kaolin clay is calcined under a reducing atmosphere at a temperature of at least 1400.degree.F., preferably in the range of about 1600.degree.F. to 2100.degree.F., and then the clay is calcined in an oxidizing atmosphere at a temperature of at least 1400.degree.F., preferably in the range of about 1600.degree.F. to 2100.degree.F., to produce a calcined clay pigment product of desired brightness.

Abstract: An arsenic sulfide mineral impurity, such as gersdoffite, is removed from talc by an oxidative leach treatment at a pH below 2.

Abstract: A process for the catalytic cracking of hydrocarbons to produce gasoline wherein the hydrocarbon charge is contacted under fluid cracking conditions with a fluid catalyst composition comprising ion-exchanged synthetic crystalline faujasite and an amorphous alumina-silica residue of caustic leached calcined kaolin clay which had undergone the kaolin exotherm during calcination, the catalyst particles analyzing, on a volatile-free weight basis, at least 90 percent combined SiO.sub.2 and Al.sub.2 O.sub.3 in a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio within the range of 0.8 to 1.4/1 and less than 3 percent Na.sub.2 O.