Abstract: A catalytic process for preparing ethylene polymers having a density of .gtoreq.0.94 to .ltoreq.0.97 and a melt flow ratio of about .gtoreq.22 to .ltoreq.32 in a low pressure gas phase process at a productivity of .gtoreq.50,000 pounds of polymer per pound of Ti with a catalyst formed from selected organoaluminum compounds and a precursor composition of the formulaMg.sub.m Ti.sub.1 (OR).sub.n X.sub.p (ED).sub.qwherein ED is a selected electron donor compoundm is .gtoreq.0.5 to .ltoreq.56n is 0, 1 or 2p is .gtoreq.2 to .ltoreq.116q is >1.5 m+2R is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, andX is selected from the group consisting ofCl, Br, I or mixtures thereof,which catalyst is in particulate form and impregnated in a porous inert carrier material.

Abstract: A catalyst formed from selected organo aluminum compounds and a precursor composition of the formulaMg.sub.m Ti.sub.l (OR).sub.n X.sub.p [ED].sub.qwherein ED is a selected electron donor compoundm is .gtoreq.0.5 to .ltoreq.56n is 0, 1 or 2p is .ltoreq.2 to .gtoreq.116q is .gtoreq.2 to .ltoreq.85R is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, andX is selected from the group consisting of Cl, Br, I or mixtures thereof,which catalyst is in particulate form and impregnated in a porous inert carrier material.A process for preparing such catalyst.A process for using said catalyst to readily prepare ethylene copolymers having a density of about .gtoreq.0.91 to .ltoreq.0.94 and a melt flow ratio of .gtoreq.22 to .ltoreq.32 in a low pressure gas phase process at a productivity of .gtoreq.50,000 pounds of polymer per pound of Ti.Novel polymers and molded articles are prepared.

Abstract: Ethylene copolymers having a density of .gtoreq.0.91 to .ltoreq.0.96 and a melt flow ratio of .gtoreq.22 to .ltoreq.32 are readily produced in a low pressure gas phase process at a productivity of .gtoreq.50,000 pounds of polymer per pound of Ti with a particulate catalyst diluted with an inert carrier material and formed from selected organo aluminum compounds and a precursor composition of the formula:Mg.sub.m Ti.sub.1 (OR).sub.n X.sub.p [ED].sub.qwherein ED is a selected electron donor compound.m is .gtoreq.0.5 to .ltoreq.56n is 0 or 1p is .gtoreq.6 to .ltoreq.116q is .gtoreq.2 to .ltoreq.85R is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, andX is selected from the group consisting of Cl, Br, I, or mixtures thereof.

Abstract: A catalyst composition formed from selected organoaluminum compounds and a precursor composition of the formulaMg.sub.m Ti.sub.1 (OR).sub.n X.sub.p [ED].sub.q [Filler].sub.rwhereinED is a selected electron donor compoundR is a C.sub.1 to C.sub.14, aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, X is Cl, Br, I, or mixtures thereof, Filler is an inert organic or inorganic compound, and, based on the total weight of such compositionm is .gtoreq.0.5 to .ltoreq.56n is 0 or 1p is .gtoreq.6 to .ltoreq.116q is .gtoreq.2 to .ltoreq.5r has a value such that the percent filler is from about 10 to about 95 weight percent based on the total weight of the precursor composition. A process for preparing such precursor composition by spray drying it from a slurry or solution in said electron donor compound, using atomization. A process for using said catalyst to readily prepare ethylene polymers having a density of about .gtoreq.0.91 to .ltoreq.

Abstract: 2-Trifluoromethyl cinchoninic acids can be prepared by reaction of an alkali metal 2-aminophenylglyoxylate and 1,1,1-trifluoroacetone in a neutral or acid medium. Preferably reaction is effected by first hydrolyzing isatin, or a substituted isatin, in the presence of an alkali metal hydroxide to produce the alkali metal 2-aminophenylglyoxylate, and then reacting this intermediate product with 1,1,1-trifluoroacetone without isolating it from the reaction medium.

Abstract: Compositions comprising a mixture of gelatin and a compound of the formula: ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each a group selected from the class consisting of --H, --Cl, --CHCl.sub.2, --CH.sub.2 Cl, --CCl.sub.3, --SH, --SCH.sub.3, --NH.sub.2, --NHC.tbd.N, --CH.sub.2 C.tbd.N, ##STR2## --CH.sub.2 OH, --NO.sub.2 and monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms, provide effective corrosion inhibition for aqueous carboxylic acid solutions in the cleaning of metal industrial equipment.

Abstract: This invention relates to a method and compositions for coating aluminum in order to improve both corrosion resistance and paint adhesion. By using a coating composition consisting essentially of (a) polyacrylic acid or esters thereof and (b) at least one acid selected from the group consisting of H.sub.2 ZrF.sub.6, H.sub.2 TiF.sub.6, and H.sub.2 SiF.sub.6, the characteristics of the treated aluminum surfaces are improved, while process waste disposal problems associated with conventional chrome/phosphate coating are avoided.

Abstract: This application is concerned with the treatment of metal surfaces with stable solutions of hexavalent chromium, trivalent chromium, phosphoric acid, polyacrylic acid and water dispersible acrylic emulsion polymer to enhance the corrosion resistance and paint adhesion properties of the metal; the coating uniquely having generally universal utility under a wide variety of paint systems and paint types.

Abstract: An injectable packing formulation comprising particulate flexible graphite and a suitable liquid lubricant. Such formulation can be used to pack the stuffing box assembly of any pump, valve, expansion joint, or like structure, and is particularly useful at temperatures in excess of 500.degree. F. where other packing materials do not perform satisfactorily. While stuffing boxes filled with conventional injectable packing formulations require frequent re-packing in order to maintain a seal when operated at elevated temperatures, stuffing boxes packed with the packing formulation of the present invention require little or no maintenance even when operated at highly elevated temperatures.

Abstract: Electromotive brushes having improved commutating properties composed of a dense, rigid plate of self-bonded, non-woven carbon fibers formed from mesophase pitch fibers.

Abstract: Fibers having a high degree of flexibility and handleability are produced by oxidizing fibers spun from a carbonaceous pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state to an oxygen content of from 17 per cent by weight to 30 per cent by weight. Because of their strength and handleability, these highly-oxidized fibers can be easily processed at high speeds by means of conventional yarn-transport systems, and readily woven or knit into cloth. Such cloth may then be heat treated to produce carbon or graphite cloth.

Abstract: Method of incorporating carbon fibers into an aqueous hardenable hydraulic cementitious matrix to produce a formable composition which can be set to produce a reinforced structure having improved flexural strength, and improved resistance to cracking and spalling, which employs a polyethylene oxide in an amount sufficient to effect separation of the individual fibers of the fiber strands present in the mix and uniformly disperse them throughout the mix.

Abstract: Lightweight tubular drive shafts having noise and vibration dampening characteristics, and capable of operating at high speeds without significant misalignment between their geometric axes and their axes of rotation, are prepared by forming the shafts so that the walls thereof are a composite of a plurality of layers of carbon fibers in a solid resin matrix wherein the fibers are disposed circumferentially and helically about the longitudinal axis of the shaft.

Abstract: A highly efficient packing material is provided in the form of a flexible, corrugated expanded graphite ribbon or tape, which material can be used to pack the stuffing box assembly of any pump or valve, or like structure, regardless of the dimensions of the shaft and stuffing box of such pump or valve. The use of corrugated ribbon or tape of expanded graphite as a packing material eliminates the former requirement for pre-made rings which had to be sized to conform precisely to the dimensions of the stuffing box and shaft of such pump or valve, and vastly broadens the applicability and use of this highly efficient packing material to many field operations where such use was formerly impossible.

Abstract: A boron nitride crucible, suitable for the vaporization of aluminum, having a multi-walled structure comprising an outer wall and a thinner inner wall weakly bonded to the thicker outer wall. Because of this structure, the crucible is considerably more flexible than conventional single-walled crucibles and exhibits substantially improved thermal cycling characteristics and longer life. The crucible is produced by depositing pyrolytic boron nitride upon a mandrel having the shape of the desired crucible at a temperature of from about 1850.degree. C. to about 2100.degree. C. until a first layer of boron nitride of suitable thickness has been produced, interrupting the deposition of boron nitride upon the mandrel and lowering the temperature to below 1750.degree. C., and then depositing additional boron nitride upon the mandrel at a temperature of from about 1850.degree. C. to about 2100.degree. C. to produce a second outer layer of boron nitride having a thickness greater than that of the inner layer.

Abstract: A method of accurately centering and securely bonding a rod in a tubular shaft. Concentric alignment of the rod in the shaft is assured by positioning two resilient sealing rings between the rod and the shaft which act to center and hold the rod in proper geometric relationship with the shaft. While the invention is generally useful wherever secure bonding of a male fitting in a tubular shaft is desired, it is particularly applicable where accurate centering of the fitting in the shaft is necessary, such as in the bonding of a universal joint fitting in a drive shaft.

Abstract: An improved process for producing pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, pitch of a given mesophase content, suitable for producing carbon fibers, is produced in substantially shorter periods of time than heretofore possible, at a given temperature, by subjecting the pitch to reduced pressure during formation of the mesophase.

Abstract: Self-bonded webs of non-woven carbon fibers in the form of blankets, felt, paper, fiberboard, and the like, are produced by spinning a carbonaceous pitch having a mesophase content of from about 40 percent by weight to about 90 percent by weight to form carbonaceous pitch fiber; disposing staple lengths of the spun fiber in intimately contacting relationship with each other in a non-woven fibrous web; heating the web produced in this manner in an oxidizing atmosphere to thermoset the surfaces of the fibers to an extent which will allow the fibers to maintain their shape upon heating to more elevated temperatures but insufficient to thermoset the interior portions of the fibers; heating the web containing the externally thermoset fibers under compressive pressure in an oxygen-free atmosphere to a temperature sufficiently elevated to cause the mesophase pitch in the unoxidized interior portions of the fibers to undergo liquid flow and exude through surface pores or flaws in the fibers and contact the surfaces o

Abstract: An improved process for producing carbon fibers from pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, pitch of a given mesophase content, suitable for producing carbon fibers, is produced in substantially shorter periods of time than heretofore possible, at a given temperature, by passing an inert gas through the pitch during formation of the mesophase.

Abstract: An improved process for producing pitch which is transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, the mesophase content of the pitch is formed while agitating the pitch so as to produce a homogeneous emulsion of the immiscible mesophase and non-mesophase portions of the pitch. Mesophase pitches prepared in this manner have been found to possess a lesser amount of high molecular weight molecules in the mesophase portion of the pitch and a lesser amount of low molecular weight molecules in the non-mesophase portion of the pitch, and thus a smaller differential between the average molecular weights of the mesophase and non-mesophase portions of the pitch, than mesophase pitches having the same mesophase content which have been prepared in the absence of such agitation.