Abstract: N-substituted mono or bis-oxazolidines may be manufactured by reacting an alkylene oxide at alkoxylating conditions with a mono-imine of the general formula: ##STR1## or a bis-imine of the general formula: ##STR2## wherein R is a linear or branched alkyl, aryl, aralkyl, alkylenyl or aryllenyl group having 1-22 carbon atoms, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different, and are selected from the group including H--, methyl, ethyl, isobutyl, isoamyl, or phenyl. The oxazolidine may thereafter be cleaved with water, preferably slightly acidified, to produce the monoethoxylated amine.

Abstract: A process for the hydrolysis of liquid fats comprising contacting the fats, in the presence of water at hydrolyzing conditions, with lipase immobilized by adsorption from aqueous solution without pretreatment or pretreatment with a polar solvent on a microporous structure comprising a synthetic hydrophobic thermoplastic polymer selected from the group consisting of aliphatic olefinic polymers, oxidation polymers, ionic polymers and blends thereof. Various embodiments of the invention include immobilized lipase itself and an embodiment that employs a vertical packed column of particles of the immobilized lipase through which the liquid fat and water feed streams may be passed cocurrent or countercurrent, one that employs a horizontally disposed diaphragm that includes a layer of fibers of the immobilized lipase and an embodiment that employs a stirred reactor wherein a suspension of particles of the immobilized lipase is maintained in the reaction medium.

Abstract: A process for the removal of impurities comprising amides from a solution comprising nitriles and the impurities. A reaction mixture is formed which includes the solution, a layered mineral comprising aluminum silicates having exchangeable alkaline or alkaline earth cations on the surfaces of the layers and an acid which has an acid strength sufficient to protonate the amides at amide protonation conditions, but in which the solubility of the salt of the acid and exchangeable cation at those conditions is such that the equilibrium of the protonation reaction is substantially in the direction of the amides remaining in a protonated form. The water content of the reaction mixture must be less than about 0.5 wt. % for substantially all of the reaction time. The reaction mixture is maintained for a sufficient time at the amide protonation conditions for protonation of the amides and exchange of the protonated amides and exchangeable cations to occur, the protonated amides adhering to the surfaces of the layers.

Abstract: A protein is immobilized by a simple and effective method on a porous polymeric support by a first soaking in a dilute long-chain cationic solution and a second soaking in a dilute aqueous protein solution. The long chain cationic is preferably a nitrogen compound such as a diamine having at least one alkyl or alkenyl group containing at least eight carbon atoms. A preferred diamine is N-coco-1,3-diamino-propane. The protein may be an enzyme or hormone. A preferred enzyme is catalase or a two enzyme system of catalase and glucose oxidase.

Abstract: A method for inhibiting corrosion of a metal surface is disclosed. The method comprises contacting said metal surface with a corrosion inhibitor of the formula ##STR1## wherein R is selected from the group consisting of aliphatic radicals containing from about 6 to about 22 carbon atoms, R.sub.1 --C.sub.m H.sub.2m --wherein R.sub.1 is alkoxy containing from 6 to 22 carbon atoms and m is an integer of from 2 to 6, and ##STR2## wherein R.sub.2 is alkyl containing from 1 to 20 carbon atoms, x is an integer of from 1 to 10 and each R.sub.3 is independently hydrogen or methyl; and R' is selected from the group consisting of hydrogen, C.sub.1 -C.sub.12 alkyl, and C.sub.1 -C.sub.12 alkoxy, at a temperature and for a period of time sufficient to inhibit corrosion of said metal surface.A method for pretreating a metal surface to improve the adhesion of paint thereto is disclosed.

Abstract: A method of and an apparatus for cooling white cement clinker from a rotary kiln wherein the clinker is classified into at least two and preferably more particle-size fractions which are quenched with water with residence times staggered so as to increase as the particle size range increases. The cooling is effected to a temperature of below 1200.degree. C. but without excessively cooling the clinker so that all fractions retain sufficient sensible heat to drive off water picked up during the quenching process and resulting in completely dry clinker.

Abstract: A method for complexing metal oxide particles in an organic medium is disclosed. The method comprises incorporating into said medium an effective amount of a complexing agent of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl and alkenyl groups containing from 4 to 22 carbon atoms, aryl groups containing from 4 to 10 carbon atoms, alkyl and alkenyl groups containing from 4 to 22 carbon atoms substituted with one or more aryl groups containing from 4 to 10 carbon atoms and aryl groups containing from 4 to 10 carbon atoms substituted with one or more alkyl or alkenyl groups containing from 1 to 22 carbon atoms; R.sub.2 is selected from the group consisting of hydrogen, --(CH.sub.2 CH.sub.2 O).sub.

Abstract: The loading due to parasitic capacitances on the input amplifiers of a coupling network which connects a plurality of input lines each including one of the input amplifiers selectively to a plurality of output lines and which uses field effect transistors as coupling elements is improved by the use of compensation amplifiers. Specifically, the source of each FET is connected to one of the input lines, while the drain is connected to an output line. Each compensation amplifier has an input connected to one output line and an output connected to the bulk terminal of each FET having a drain connected to the particular output line. Since the gain of the compensation amplifiers is unity, the voltage applied to the bulk terminals is equal to the output voltage shifted by the drain-bulk voltage.

Abstract: A method for inhibiting corrosion of a metal surface is disclosed. The method comprises contacting said metal surface with a corrosion inhibitor of the formula ##STR1## wherein R is selected from the group consisting of aliphatic radicals containing from about 6 to about 22 carbon atoms, R.sub.1 --C.sub.m H.sub.2m -- wherein R.sub.1 is alkoxy containing from 6 to 22 carbon atoms and m is an integer of from 2 to 6, and ##STR2## wherein R.sub.2 is alkyl containing from 1 to 20 carbon atoms, x is an integer of from 1 to 10 and each R.sub.3 is independently hydrogen or methyl; and R' is selected from the group consisting of hydrogen, C.sub.1 -C.sub.12 alkyl, and C.sub.1 -C.sub.12 alkoxy, at a temperature and for a period of time sufficient to inhibit corrosion of said metal surface.A method for pretreating a metal surface to improve the adhesion of paint thereto is disclosed.

Abstract: A method for complexing metal oxide particles in an organic medium is disclosed. The method comprises incorporating into said medium an effective amount of a complexing agent of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl and alkenyl groups containing from 4 to 22 carbon atoms, aryl groups containing from 4 to 10 carbon atoms, alkyl and alkenyl groups containing from 4 to 22 carbon atoms substituted with one or more aryl groups containing from 4 to 10 carbon atoms and aryl groups containing from 4 to 10 carbon atoms substituted with one or more alkyl or alkenyl groups containing from 1 to 22 carbon atoms; R.sub.2 is selected from the group consisting of hydrogen, --(CH.sub.2 CH.sub.2 O).sub.

Abstract: Switching cross-points between input and output video lines each consist of a series connection of oppositely poled diodes to the common connection of which a resistor is connected through which forward current for both diodes is selectively provided through a random access memory (RAM) controlled from a remote location. In the switched-off condition the current drain is negligible, and in the switched-on condition it may be as little as 5 mmA. Low-capacitance diodes make possible the holding of cross-torque to very low levels.

Abstract: A method and device for sintering materials and, in particular, limestone gravel, of very different granular size in the granular range of 5 to 50 mm, in a rotary shaft kiln with a shaft preheater and shaft cooler, are provided wherein the sintering charge of the original gravels are crushed into two or more granular fractions and are fed in a low band width to the furnace system periodically and alternately, and wherein the process gases flow through the filling or charge layers of the sintering materials. The filling layers are automatically changed in the shaft preheater and the shaft cooler in their thickness, so that the flow through resistance thereof remains constant.

Abstract: Flame resistant foam plastics of cellulose and kieselguhr or one of several types of mica such as roscoelite, lepidolite, biotite, phlogopite, vermiculite or muscovite where at least 80 percent by weight of the kieselguhr or the mica show grain sizes ranging from 0.4 to 650 microns and where the bulk density of the kieselguhr is less than 0.40 g./cc. and the bulk density of the mica is less than 0.37 g./cc.

Abstract: A process for the stabilization of a polymer which is a barium, strontium and/or calcium complex of polyterephthaloyl oxalamidrazone or polydiphenylether-dicarboxylic acid-4,4'-oxalamidrazone wherein the polymer is treated in an acidic to neutral aqueous solution, e.g. at pH of 1 to 7, containing an acid or salt compound selected from the group consisting of oxalic acid, alkali oxalate, alkali sulfite, alkali hydrogen sulfite, alkali dithionite and alkali hydrogen sulfate. The resulting product has a much improved resistance to UV, oxidation and hydrolysis. Such polymers are especially useful in the form of flame-retardant threads, yarns, filaments, fibers, felts, fabrics and the like.

Abstract: A metal compound of a polyacyl-2,4-dihydrazino-s-triazine in which the metal is chemically bound in complex form to the polymer to provide dimensionally stable and heat-resistant polymeric compounds which are useful as pigments, catalysts and synthetic fibers.

Abstract: A process for producing a hydroperoxide in highly concentrated form by oxidation of its corresponding liquid hydrocarbon with oxygen or an oxygen-containing gas while simultaneously subjecting the liquid reaction mixture to a carrier gas distillation to remove unreacted hydrocarbon with the carrier gas while withdrawing a portion of the liquid reaction mixture which is enriched in the hydroperoxide.