Abstract: A strong anion exchange composition useful in monophosphate nucleotide isomer separations is comprised of an inert porous particle having a silyl alkyl ammonium compound fixedly attached by a covalent silicon-oxygen-silicon bond to the surface thereof. A process for synthesizing the strong anion exchange composition in an aqueous solvent is disclosed together with methods for separation of monophosphate nucleotide isomers, highly phosphorylated nucleotides and aldopentose carbohydrates using a column packed with this strong anion exchange composition.

Abstract: There are provided ultraviolet light absorbing agents of the formula ##STR1## wherein: ##STR2## Y is H or OH; Z is H, OH, OQ or OW, where at least one Z is OH if Y is H;Q is --CONH(CH.sub.2).sub.3 Si(R.sub.2).sub.x (OR.sub.1).sub.y or --COHN(CH.sub.2).sub.3 Si(R.sub.2).sub.x (OCOR.sub.1).sub.y ; andW is --C.sub.m H.sub.2m+1 ;where x=0, 1 or 2, y=1, 2 or 3, x+y=3, R.sub.1 and R.sub.2, independently, are each alkyl having 1 to 6 carbon atoms and m=1 to 18. Also provided are organopolysiloxane protective coating compositions containing said ultraviolet light absorbing agents having unique utility for protecting transparent plastic articles.

Abstract: A process for the preparation of partial hydrolyzates of orthosilicic acid tetra(alkoxyalkyl) ester having a stable shelf life is described by hydrolysis of a silicic acid tetra(alkoxyalkyl) ester with water, suitably in the presence of an acid and optionally in the presence of a solvent, wherein the stoichiometrically necessary amount of water is present at the commencement of the reaction.

Abstract: The invention provides a novel class of cyclic organotetrasiloxanes represented by the general formula ##STR1## in which R.sup.1 is a monovalent hydrocarbon group, e.g. methyl, Y is a hydrogen atom or a dialkylaminoxy group and X is a hydrocarbylideneiminopropyl group.

Abstract: In order to prepare basic dyestuffs of the general formula ##STR1## in which A and B independently of one another represent a hetero-aromatic radical or a radical of the general formula ##STR2## in which Ar denotes the grouping ##STR3## in which Y represents hydrogen or a non-ionic substituent andn represents a number between 1 and 4, andR.sub.1 and R.sub.2 represent hydrogen or alkyl, aryl or aralkyl which is optionally substituted by non-ionic or acid groups, or together, or with the o-position of Ar, form a heterocyclic ring,D denotes hydrogen, alkyl, aryl which is optionally substituted by neutral or acid groups, or a hetero-aromatic radical andX.sup.

Abstract: Disperse monoazo dyes having the formula: ##STR1## wherein X represents chlorine or bromine, each of R.sup.1 and R.sup.2 independently represents alkyl or alkenyl and R.sup.3 represents hydrogen, alkyl or acylamino.The dyes give bright red shades on synthetic textile materials.

Abstract: Synthetic polyol ester fluids useful as lubricants or hydraulic fluids have been prepared by the esterification of ethylene-methyl formate telomerization products with polyols containing from two to about six hydroxyl groups.

Abstract: Copolymers of acrylic or methacrylic materials of known type and reacted with novel, silicone-substituted acrylic and methacrylic compounds so as to produce an oxygen-permeable plastic material which is uniquely suitable for manufacturing novel corneal contact lenses. The silicone materials include high molecular weight polysiloxanylalkylesters of acrylic and methacrylic acids, made from acrylic or methacrylic ester silanes containing one or more highly substituted siloxanyl groups.One such siloxane substituent, pentamethyldisiloxane, is prepared by a novel method. Certain of the substituted silanes are prepared using a novel compound, tris(trimethylsiloxy) acetoxysilane.

Abstract: The isobutene in C.sub.4 hydrocarbon streams containing from 0.5 to 5% isobutene and n-butenes is reduced preferably to a level of 0.2 mole % or less by passing the feed stream at LHSV 2.5 to 12 in liquid phase through a fixed-bed cation exchange resin catalyst in a tubular reactor with a water heat exchange medium maintained at a temperature of 50.degree. to 80.degree. C., whereby the isobutene is oligomerized and easily separated from the remaining C.sub.4 's by fractionation.

Abstract: Improved continuous process for disproportionating monomethylamine to dimethylamine and ammonia, said process comprising passing monomethylamine over the crystalline aluminosilicate catalyst selected from(a) mordenite wherein the primary cation is Na, HNa having at least 2% Na, Mg, Ca, Sr or Ba(b) ferrierite wherein the primary metal cation is Na, K, Mg, Ca, Sr or Ba(c) clinoptilolite and(d) phillipsite,at a temperature of 250.degree.-475.degree. C. and a pressure of 7-7000 kPa, at a feed rate of 0.1-10 g of monomethylamine/g of catalyst per hour, at a monomethylamine conversion of 15-75%.

Abstract: Silylated polyethers having the general formula: ##STR1## wherein at least one R is selected from the group consisting of an --NH radical, an ammonium radical or a radical of the formula ##STR2## in which the radicals are linked to the polyether through an ester, amine, amide or ammonium radical and the remaining R groups are selected from hydrocarbonoxy radicals having up to 18 carbon atoms, hydroxyl radicals or a radical of the formula ##STR3## R.sup.1 is a divalent hydrocarbon radical selected from the group consisting of --(CH.sub.2).sub.y, --CH.dbd.CH--, or a cyclic radical selected from the group consisting of C.sub.6 H.sub.4, C.sub.6 H.sub.8 and C.sub.10 H.sub.6 ; A is a silicon containing radical selected from the group consisting of cationic or anionic radicals of the formula or ##EQU1## and nonionic radicals of the formula ##EQU2## wherein R.sup.2 and R.sup.3 which may be the same or different, are monovalent hydrocarbon radicals having from 1 to 18 carbon atoms, R.sup.

Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at hydrocarbon dehydrogenation conditions, with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component maintained in the elemental metallic state, and of a cadmium component. An example of the attenuated superactive nonacidic multimetallic catalytic composite disclosed herein is a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of an alkali or alkaline earth component, a cadmium component, and of a platinum group component which is maintained in the elemental metallic state during the incorporation of a rhenium carbonyl component.

Abstract: A palladium or palladium alloy hydrogen diffusion membrane which has been treated with silane and/or silicon tetrafluoride is employed to separate hydrogen from a hydrocarbon with which it is in admixture and from which it may have been produced under dehydrogenation conditions in the presence of said membrane.

Abstract: In the preparation of equilibration products of organosiloxanes by contacting at least one organosiloxane with a cation exchange resin, the improvement which comprises employing as said resin a polymer having side chains carrying sulphonyl groups, the carbon atoms carrying the sulphonyl groups also carrying at least one fluorine atom.

Abstract: Copolymeric organopolysiloxanes comprising SiO.sub.2 are prepared by forming an acidic, homogeneous mixture of a silanol-containing resinous copolymeric siloxane comprising R.sub.3 SiO.sub.1/2 siloxane units and SiO.sub.2 siloxane units, an organohydrogenpolysiloxane and an organic solvent and heating the resulting mixture to remove substantially all of the organic solvent. The copolymeric organosiloxanes contain silicon-bonded hydroxyl radicals and/or silicon-bonded hydrogen radicals in varying amounts which depends upon the acidity of the homogeneous mixture that is formed and the ratio of silicon-bonded hydrogen radicals to silicon-bonded hydroxyl radicals therein. The copolymeric organopolysiloxanes are useful as a reactive component in various types of curable silicone compositions.

Abstract: A process for the preparation of a halogen silane and an aromatic compound having at least one --C.dbd.O-- of ##STR1## group, while simultaneously effecting cleavage of a siloxane by contacting a compound having at least one aromatically bound mono and/or dihalogen methylene group or an aromatic compound having a mono-, di and or trihalogen methyl group of the formula ##STR2## wherein the aromatic moiety can be optionally otherwise substituted, with a siloxane of the formula ##STR3## wherein each R moiety is independently selected from the group consisting of halogen, alkyl, alkenyl and O-SiR.sub.

Abstract: Novel .alpha.-aminoacetamides are powerful stabilizers for organic materials subject to oxygen and heat degradation, and particularly for synthetic natural rubber and synthetic ester lubricants. A wide range of substituents on the amine and amide N atoms, and also on the saturated carbon atom, yields an array of stabilizers having a wide range of compatibility in compositions comprising various synthetic resinous compounds to be stabilized.Novel syntheses are provided utilizing at least one amine nucleophilic agent, a dichlorocarbene ion generating agent, and an alkoxide ion generating agent, which together in the presence of aqueous alkali and an onium salt, yield novel .alpha.-aminoacetamides in which a wide choice of substituents may be introduced. The nucleophilic agent may be a primary or secondary amine, or one of each. The dichlorocarbene ion generating agent is a haloform. The alkoxide ion generating agent may be a ketone, an aldehyde, or a cyanohydrin which reacts with the haloform. An .alpha.

Abstract: An improved process for producing hexamethyldisilane by reacting ether solutions of methyl Grignard with a crude mixture of chloromethyl disilanes, the improvement which comprises obtaining higher yields and simplified purification of HMDS by the use of a mixed solvent system composed of tetrahydrofuran and the diethyl ether of tetraethylene glycol.

Abstract: A method for producing mono-substituted dichlorosilanes selectively with a high yield from dichlorosilane is provided. According to this method, dichlorosilane and a specified compound having a double bond at .alpha.-position are reacted in the presence of a catalyst which is a homogeneous complex of ruthenium, rhodium, nickel or platinum, and a phosphine compound, or is a ruthenium chloride.

Abstract: 1-(Dicyano-trimethylsiloxy)methyl-2,2-dimethylcyclopropane derivatives of the formula ##STR1## wherein R.sub.1 is ##STR2## and X.sub.1 is halogen. A process for the production of these compounds and their use as intermediates for obtaining biocidal compounds is described.