Abstract: Polymerizing tetrafluoroethylene with modifying amounts of a perfluoro(alkyl vinyl ether) at temperatures below 60.degree. C. using permanganate or similar initiators by the suspension process and milling the raw polymer to an average particle size of from 10 to 50 .mu.m gives molding powders which are suitable for the preform free-sintering technique.

Abstract: Process for the preparation of optically active 4-(phosphinoethyl)-1,3-oxazolidin-5-one derivatives.The invention relates to a process for preparing optically active compounds of formula (IV) ##STR1## in which the radicals R.sub.1, R.sub.2, R.sub.3 ', R.sub.7, n and m are as defined in the main claim,which comprises reacting a compound of formula (II) ##STR2## with a compound of formula (III) ##STR3## in the presence of catalytical amounts of a radical former.

Abstract: Compounds of formula (I), where R.sup.1, R.sup.2, n, W, R.sup.3 and A are as defined in claim 1, are suitable for use as herbicides and plant growth regulators. They can be produced by a process similar to known processes. To produce them, new compounds of formula (II) are reacted with a carbamate of formula R.sup.* --O--CO--NR.sup.3 A, where R.sup.3 stands for phenyl or alkyl. The compounds of formula (II) can be obtained from the corresponding sulphochlorides.

Abstract: A smectic liquid-crystal mixture containing rod-shaped molecules having only one side chain and certain phenylpyrimidine derivatives. The liquid-crystal mixtures according to the invention are distinguished by a low melting point and a high S.sub.C /S.sub.A phase-transition temperature. The use of bisesters of the formula I allows the number of phenylpyrimidine derivatives in the mixtures according to the invention to be significantly reduced. Ferroelectric mixtures according to the invention have, in particular, high contrast, good alignment, a large margin, low flicker and a large angle in the chevron geometry.

Abstract: The invention relates to monomers of the formulae R.sup.1 -SO.sub.2 -N(CO-OR.sup.2)-R3-O-CO-CR.sup.4 =CH.sub.2 and R.sup.1 -N(CO-OR.sup.2) -SO.sub.2 -R.sup.3 -O-CO-CR.sup.4 =CH.sub.2, in which R.sup.1 is a (C.sub.1 -C.sub.20)alkyl, (C.sub.3 -C.sub.10)cycloalkyl, (C.sub.6 -C.sub.14)aryl or (C.sub.7 -C.sub.20)aralkyl radical, individual methylene groups in the radicals containing alkyl being optionally replaced by heteroatoms, R.sup.2 is a (C.sub.3 -C.sub.11)alkyl, C.sub.3 -C.sub.11) alkenyl or (C.sub.7 -C.sub.11)aralkyl radical, R.sup.3 is an unsubstituted or substituted (C.sub.1 -C.sub.6)alkyl, (C.sub.3 -C.sub.6)cycloalkyl, (C.sub.6 -C.sub.14)aryl or (C.sub.7 -C.sub.20)aralkyl radical and R.sup.4 is a hydrogen atom or a methyl group. It further relates to polymers having at least 5 mol % of units with pendent groups of the formula(e) -R.sup.3 -N(CO-OR.sup.2)-SO.sub.2 -R.sup.1 (I) and/or -R.sup.3 -SO.sub.2 -N(CO-OR.sup.2)-R.sup.

Abstract: In an improved process for recovering ethylene oxide from an aqueous ethylene oxide solution further containing formaldehyde is provided wherein the impure aqueous ethylene oxide solution is introduced into a distillation zone as a feed stream and undergoes distillation therein to form an ethylene oxide product sidestream and an aqueous bottoms product, water is added to the distillation zone to absorb formaldehyde vapor into a liquid phase and combines with the formaldehyde vapor to form an apparent azeotrope, and removing the apparent azeotrope from the column, the improvement is that all or part of the water is a recycled aqueous stream originating from the aqueous bottoms product and introduced to the distillation zone above the feed stream.

Abstract: A composite film is described which has at least one base layer which predominantly comprises polypropylene, and at least one top layer. The top layer is sealable and comprises a homopolymer of an olefin. A process for producing the composite film, the top layer olefin homopolymer and packaging material made from the film also are described.

Abstract: The present invention relates to N-alkyl-N'-poly(oxyalkyl)hexahydropyrimidines of the formula I ##STR1## in which R.sup.1 is C.sub.1 -C.sub.30 -alkyl or C.sub.2 -C.sub.30 -alkenyl,R.sup.2 is hydrogen or C.sub.1 -C.sub.3 -alkyl,A is a 1,2-alkylene group having from 2 to 10, preferably from 2 to 5, carbon atoms andp is a number from 1 to 50.The invention further provides for the use of N-alkyl-N'-poly(oxyalkyl)hexahydropyrimidines of the formula I as corrosion inhibitors in water/oil emulsions as are present in petroleum.

Abstract: Described are thread-guiding components for apparatus for producing, treating and processing fiber materials, having a surface which comes into contact with the fiber materials defined by certain values of the maximum averaged roughness depth R.sub.z and the values of the load-bearing proportion calculated for certain depths of cut. The defined surface comprises a cermet material. Preferably there is additionally deposited on it an outer layer, from 0.1 to 10.0 .mu.m in thickness of nitrides and/or carbides of titanium or chromium. The components are notable for significantly enhanced long-term stability of the surface properties. The components are preferably godets.

Abstract: Process for the preparation of aryldimethyl(3-arylpropyl)silanes by a route comprising hydrosilylation followed by a modified Grignard reaction.

Abstract: The present invention relates to a process for the preparation of a fat-liquoring compositions based on oxysulfited oils of animal and/or vegetable origin, the fatty substances employed containinga) 70-99% by weight of fatty substances of animal and/or vegetable origin andb) 30-1% by weight of compounds of the formula I ##STR1## which differ from the compounds of component a) and in which R.sup.1, R.sup.2 and R.sup.3 independently of one another are branched or straight-chain, optionally substituted C.sub.1 -C.sub.24 -alkyl radicals,R.sup.4 is hydrogen or a straight-chain or branched, optionally substituted C.sub.1 -C.sub.8 -alkyl radical,m and n integers which are greater than zero andthe process has the steps of:oxidation of compositions based on fatty substances containing the components a) and b) at a temperature above 40.degree. C.

Abstract: Modified cellulose fiber is produced by adding a modifier to a cellulose solution and spinning fibers from the solution, or by adding a modifier to a viscose solution and spinning fibers by the viscose spinning process, said modifier being a polymeric amine compound having pendant primary, secondary or tertiary amino groups and having a molecular mass of more than 1000.

Abstract: A process is disclosed for reducing the microbe count in microbially-contaminated aqueous multi-phase composition containing synthetic resin, such as polymer dispersions and formulations that contain polymeric binders. The process uses dielectric heating, preferably immediately before transfer of the multi-phase composition to containers.

Abstract: Granules containing salinomycin are prepared that are free-flowing, dust-free, and have unrestricted bioavailability of salinomycin. The granules are produced by fermenting a culture broth with a salinomycin producing microorganism to a residual fat content of about 24 to 30% by dry weight broth, adding to the fermented broth a cellulose ether and an anticaking agent, and spray drying the broth while adding a flow auxiliary to produce granules containing 10 to 26% by weight salinomycin. The granules also contain, based on the weight of the broth being fermented, 30 to 40% anticaking agent and flow auxiliary in a ratio of 3:1 to 9:1 and 0.5 to 2% cellulose ether. The anticaking agent is preferably a calcium carbonate such as chalk or a silica of natural origin such as diatomaceous earth, talc, or kaolin. The flow auxiliary is preferably a synthetic or precipitated silica.

Abstract: A photosensitive material comprising (A) a flexible transparent film support, (B) a colored photosensitive layer which contains an organic binder (B1) a dye or a colored pigment (B2), a compound (B3), which forms a strong acid on exposure to radiation, and a compound (B4) which has at least one group cleavable by the acid, and (C) an adhesion-promoting layer which contains a thermoplastic polymer which has a softening temperature in the range from 40.degree. to 200.degree. C., wherein the adhesion (a.sub.1) of the unexposed photosensitive layer (B) to the adhesion-promoting layer (C) is less than the adhesion (a.sub.3) of the unexposed photosensitive layer (B) to the film support (A) and than the cohesions of the layers (B) and (C), and the adhesion (a.sub.3 ') of the exposed photosensitive layer (B) to the film support (A) is less than the adhesion (a.sub.

Abstract: An optical tape comprising a substrate having a center line average roughness (Ra.sup.A) on one side of 0.005 to 0.5 .mu.m and a tensile strength (F.sub.5) in the longitudinal direction of not less than 8 kg/mm.sup.2, and an optical recording layer formed on the other side of said substrate.

Abstract: A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.

Abstract: A magnetooptic layer made from rare-earth metals and transition metals exhibits a gradient in the alloy composition over the layer depth, and has a coercive field strength of more than 8 kOe in the temperature range of .DELTA.T=100.degree. C. around the compensation temperature T.sub.comp. The layer is fabricated with a dynamic sputter process, in which the substrates to be coated are led past one or a plurality of sputter targets, arranged in a common plane parallel to the track of the substrates. A mask is located between the sputter targets and the substrates.

Abstract: An esterase with a molecular weight of 55,200 .+-.300 Da is suitable for the chemoselective conversion of a compound of the formula II into a compound of the formula I.

Abstract: Azines of formula (I): ##STR1## in which R and R' either are identical and represent an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical containing 3 to 5 carbon atoms, or together form a radical of formula (II):--CHR.sub.1 --(CR.sub.2 R.sub.3).sub.n --CHR.sub.4 -- (II)in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, identical or different, represent a hydrogen atom or an alkyl radical containing 1 to 4 carbon atoms and n represents 0 or 1, in their different stereoisomer forms, their preparation process and their use.