Abstract: Transition metal complexes of the formula IL.sub.m MX.sub.n I,whereL is a ligand of the formula II ##STR1## m is 1 or 2, M is a titanium, zirconium, hafnium, vanadium, niobium, tantalum, or a rare earth metal,X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or OR.sup.1,n is 1, 2, 3, or 4 as defined herein, andR.sup.1, R.sup.2, R.sup.3, R.sup.4, and A are as defined herein,and the use of these complexes as catalysts for olefin polymerization are described herein.

Abstract: A diphenyl ether of the formula I, ##STR1## or a salt or N-oxide thereof wherein Q is C(CO.sub.2 CH.sub.3).dbd.CHCH.sub.3, C(CONH.sub.2).dbd.CHOCH.sub.3, C(CO.sub.2 CH.sub.3).dbd.NOCH.sub.3, C(CONHCH.sub.3).dbd.NOCH.sub.3 or N(OCH.sub.3)--CO.sub.2 CH.sub.3 ;n is 0 or 1;R.sup.1 is hydrogen or a carbon bonded organic radical;R.sup.2 is hydrogen or an organic radical bonded via C, O, S or N;x is 0, 1 or 2;R.sup.3 is cyano, nitro, halogen or an organic radical bonded via C, O, S or N; ory is 0, 1, 2 or 3;R.sup.4 is cyano, halogen, alkyl, haloalkyl or alkoxy,intermediates and processes for its preparation, and its use.

Abstract: The use of aqueous solutions or dispersions of copolymers composed ofA) from 5 to 95 mol % of ethylenically unsaturated mono- or dicarboxylic acids having 3 to 10 carbons, their anhydrides, their alkali metal, alkaline earth metal or ammonium salts, or mixtures thereof,B) from 5 to 95 mol % of ethylenically unsaturated acetals, ketals or orthocarboxylic esters of the formula I ##STR1## where R.sup.1 to R.sup.12 independently are hydrogen or an organic radical anda to d independently are 0 or 1, andC) from 0 to 70 mol % of other copolymerizable monomersor their hydrolysis products or polymer-analogous reaction products, as tanning agents for the self-tanning, pretanning or assist tanning of leather pelts and skin pelts or for the retanning of leather and skins.

Abstract: A process for the continuous distillation of thermolabile monomers under reduced pressure in a column includesfeeding the thermolabile monomers in vapor or liquid form to the column,introducing an inert distillation aid which forms a heteroazeotrope with the thermolabile monomers into the vaporizer at the bottom of the column, but separately from the monomer feed, and vaporizing into there or feeding an emulsion of thermolabile monomers and an inert distillation aid into the vaporizer or into the column,condensing the azeotrope at the top of the column and separating it in a phase separator, taking off the thermolabile monomers and returning the distillation aid to the column or, if desired, working it up by distillation andtaking off components having a higher boiling point than the thermolabile monomers from the bottom of the column.

Abstract: A spin pot for spinning synthetic polymer fibers has a polymer filter, a spinneret downstream of the polymer filter, and an electroformed perforated screen positioned between the polymer filter and the spinneret. The screen is most preferably electroformed nickel and includes an annular non-perforated region which bounds a perforated central region. The electroformed perforations prevent debris that may become dislodged from the filter unit from blocking the spinneret orifices thereby creating undesired "slow-holes".

Abstract: A novel process for the preparation of Ziegler-Natta catalyst systems containing, as active components,a) a titanium-containing solid component which contains titanium, magnesium, halogen and a carboxylic ester and, as a cocatalyst,b) an aluminum compound andc) if required, a further electron donor is described. Ziegler-Natta catalyst systems which are obtainable by this process, the preparation of polymers of propylene with the aid of these catalyst systems, the polymers obtainable thereby and films and moldings of these polymers are also described.

Abstract: Zirconium dioxide which is monoclinic to at least 80% by weight and has a BET surface area of at least 100 m.sup.2 /g is prepared by admixing aqueous zirconium salt solutions with ammonia, drying and calcining the precipitation product, aging the precipitation product, prior to drying, in aqueous phase at from 0 to 300.degree. C. and carrying out the calcination at from 200 to 600.degree. C.

Abstract: A stable dispersion of melamine in polyol components comprising at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms and, if desired, low molecular weight chain extenders and/or crosslinkers, blowing agents, catalysts, flame retardants and also further auxiliaries and/or additives is prepared by using the melamine in combination with at least one amine and at least one organic and/or modified organic isocyanate. Such a dispersion can be used for producing flame-resistant polyurethane foams.

Abstract: Compounds of the formula ##STR1## where A, B, D, R.sup.1 and R.sup.2 have the meanings stated in the description, are described. The compounds are suitable for controlling diseases.The novel compounds are prepared via compounds of the formulaH.sub.2 N--CH.sub.

Abstract: 5-Formylvaleric esters are prepared in a yield of not less than 90% by distillation of a formylvaleric ester mixture of 5-formylvaleric ester and either 3- or 4-formylvaleric ester or a mixture of 3- and 4-formylvaleric esters, where the ester radicals of the respective formylvaleric esters are identical, wherein the 3- or 4-formylvaleric ester or a mixture thereof is separated from the 5-formylvaleric ester in a distillation column at a pressure in the range from 2 to 100 mbar and a temperature of not above 150.degree. C. (measured as the temperature at the bottom of the column) and the esters used are the corresponding methyl or ethyl esters, where the purity of the 5-formylvaleric ester is not less than 98% and, as impurity, 4-formylvaleric ester is present in an amount of not more than 100 ppm.

Abstract: In a process for producing foams based on polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000 in the presence of blowing agents, catalysts and, if desired, chain extenders and/or crosslinkers having a molecular weight of <400, auxiliaries and/or additives, use is made of isocyanates having isocyanurate and/or biuret structures, at least one compound which is reactive toward isocyanates, has a molecular weight of from 400 to 8000 and contains at least 50% primary hydroxyl groups, as catalysts at least one tertiary amine and at least one metal salt plus from 0.5 to 5.3% by weight of water, based on the weight of the compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000, and the reaction is carried out at >40.degree. C.

Abstract: An elastomeric block copolymer comprising at least one block A having polymerized units of a vinylaromatic monomer and forming a rigid phase and at least one elastomeric block B/A having polymerized units of both vinylaromatic monomers and of a diene and forming a flexible phase, and glass transition temperature Tg of the block A being above 25.degree. C. and that of the block B/A being below 25.degree. C. and the phase volume ratio of block A to block B/A being chosen so that the amount of the rigid phase in the total block copolymer is 1 to 40% by volume and the amount of the diene is less than 50% by weight.

Abstract: An aqueous polymer emulsion contains a dispersed polymer A, which is obtainable by free radical aqueous emulsion polymerization of different monomer compositions in two successive stages and has ureido groups, and a polyaldehyde compound.

Abstract: A thermoplastic molding composition comprisesA) from 1 to 97% by weight of a thermoplastic polyesterB) from 1 to 97% by weight of a polycarbonateC) from 1 to 40% by weight of an elastomer containing oxazoline groups and having a glass transition temperature (T.sub.g).ltoreq.0.degree. C.D) from 0.05 to 5% by weight of a bisoxazolineE) from 0 to 70% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to E) is 100%.

Abstract: Polymers are obtained by polymerising olefinically unsaturated monomers in the presence of a metal complex having the general formula (I), in which the substituents and indexes have the following meanings: M is a metal of group VIIIB of the periodic table of elements; E.sup.1, E.sup.2 stand for an element of group VA of the periodic table of elements; Z is a bridging structural unit made of one, two or three substructural units of elements of groups IVA, VA, VIA of the periodic table of elements; R.sup.1 to R.sup.4 stand for substituents selected in the group that consists of C.sub.1 -C.sub.20 organic carbon residues and C.sub.3 -C.sub.30 organic silicium residues which may contain one or several elements of groups IVA, VA, VIA and VIIA of the periodic table of elements; L.sup.1, L.sup.2 stand for formally charged or neutral ligands; X stands for monovalent or polyvalent anions; p equals 0, 1 or 2; m, n equal 0, 1 or 2, whereas p=m.times.n.

Abstract: A process for preparing pyridyl-substituted N-phenylhydroxylamines by catalytic hydrogenation of the corresponding nitro compounds in the presence of an N-substituted morpholine compound and rearrangement of the hydroxylamine compounds obtained to pyridyl-4-fluoraniline compounds is described.

Abstract: The use of bacterial lipases which show an immunological cross-reaction with the antibodies to the lipase produced by the microorganism Pseudomonas spec. DSM 6483 and/or Pseudomonas cepacia IAM 1057 for producing drugs for the therapy of maldigestion is described.

Abstract: Condensation products obtained by condensation of(A) a mixture consisting of(a) a triazine of the general formula I ##STR1## and (b) a mixture consisting of(b1) a triazine of the general formula II ##STR2## (b2) a substituted melamine of the general formula III ##STR3## (B) phenols withformaldehyde or formaldehyde-donating compounds are useful for producing shaped articles, especially fibers and foams.

Abstract: A polyurethane which is substantially self-dispersible in water and is obtainable by reactinga) at least one polyisocyanate withb) at least one polyol andc) at least one photoinitiator of the general formula I ##STR1## where R is a radical of the formula II ##STR2## or is --CR.sup.7 R.sup.8 R.sup.9, P(.dbd.O)(R.sup.10).sub.2 or SO.sub.2 R.sup.11,the number-average molecular weight M.sub.n of the polyurethane being greater than 2700, and its use. The invention also relates to aqueous polyurethane resin dispersions and coating compositions comprising the novel polyurethanes, and to their use.

Abstract: This invention provides a method for treating cancer in an individual, wherein the cancer is a tumor in which endothelin is upregulated (e.g. tumors of the prostate, lung, liver, breast, brain, stomach, colon, endometrium, testicle, thyroid, pituatary, bladder, kidney, pancreas and meninges) by administering to the individual an effective amount of a compound of Formula I or Formula Ia, as describe herein.