Abstract: The invention relates to a dendritic macromolecule with branches prepared from halogen cyanide units composed of a monohalogenated hydrocarbon compound comprising 3-50 carbon atoms and at least one cyanide group, the halogen and the cyanide group being separated from one another by at least 3 carbon atoms. The invention also relates to a process for the preparation of a dendritic macromolecule, comprising a core and at least one branch emanating from the core, characterized in that the process comprises the steps a) through c):a) substantially every functional group of the core molecule is reacted with monomeric halogen cyanide unitsb) substantially every incorporated cyanide group is reduced to an aminec) substantially every amine group is reacted with monomeric halogen cyanide units,steps b) and c) being conducted alternately.

Abstract: The invention provides a silane-oligomer (A) of the following formula:(R.sup.3)--X--(R.sup.1.sub.x)--Y--Si(R.sup.2).sub.3 ( 1)wherein R.sup.3 is a group having a functionality that can be polymerized through actinic radiation, R.sup.1.sub.x is a backbone-oligomer having a molecular weight of more than about 200, R.sup.2 is a hydrolyzable group, and X and Y are coupling groups. The invention also provides a glass coating composition containing the silane-oligomer.

Abstract: Process for the preparation of a mixture of alkyl pentenoates by carbonylation of butadiene in the liquid phase in the presence of an alkanol, carbon monoxide, palladium and a bidentate organic phosphorus, antimony or arsenic ligand, the bidentate ligand having as bridging group a bis(.eta.-cyclopentadienyl) coordination group of a transition metal. Preferably the transition metal is iron.

Abstract: The present invention relates to a catalyst. The catalyst contains a transition metal-imidoaryl complex which contains at least one amido group bound to the transition metal and wherein the aryl group is a 2,6-di-substituted phenyl group. The catalyst can be used in polymerizing olefins. The transition metal is chosen from groups 3-6 of the periodic table.

Abstract: The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam- containing vapor stream is formed.The formed caprolactam may then be used in the production of engineered resins and fibers.

Abstract: Process for the preparation of a terminal ester by carbonylation of an internally unsaturated organic compound in the presence of an alcohol, carbon monoxide, palladium, an acid with a pK.sub.a of less than 2 (measured at 18.degree. C. in an aqueous solution) and a bidentate organic phosphorus, antimony or arsenic ligand compound having a bridging group, wherein the bridging group comprises a bis(.eta.-cyclopentadienyl) coordination group of a transition metal.

Abstract: The invention relates to a colored polymer composition with strongly improved color properties. This improvement is achieved by masking groups in the polymer that are reactive with respect to the colorant with the aid of an effective quantity of a compound suitable for this purpose.The invention is particularly suitable for polyamides, the amino end group content being reduced to less than 20, preferably less than 5 meq/kg, with the aid of acetyl lactam. The thermostability of e.g. CI Pigment Red 209 colored nylon-6 is improved by a factor of 9. The brightness of the color also increases to a surprising extent.

Abstract: A hydroformylation process for the production of 5-formylvaleric acid from 2-, or 3-pentenoic acid, or 5-formylvaleric acid ester from 2-, or 3-pentenoic acid ester, or 5-formylvaleronitrile from 2-, or 3-pentenenitrile by reaction with hydrogen and carbon monoxide in a solvent containing a catalyst having a platinum component, a bidentate diaryl phosphine component, an acid promoter component.

Abstract: One or more polyamides can be depolymerized in the presence of at least one nitrogen-containing compound. The depolymerization takes place at a pressure between about 0.5 and about 5 atm. The polyamide may be in the form of carpet waste or other heterogeneous form. Advantages include better selectivity towards the polyamide monomeric components and use of low pressure equipment to effect depolymerization.

Abstract: Process for the preparation of N-alkyl-N,O-diacetyl hydroxylamine, for instance N-methyl-N,O-diacetyl hydroxylamine, by catalytic reduction of a nitroalkane, for instance nitromethane, in the presence of acetic anhydride. As catalyst preferably a platinum on alumina catalyst is used. The invention provides a simple one-step process for the preparation of N-alkyl-N,O-diacetyl hydroxylamine in a relatively concentrated reaction medium.

Abstract: The invention relates to a process for the preparation of a bridged metallocene compound in which:(I) a bridged double ligand, reacting with a proton acceptor, is converted into a bridged double anion(II) the double anion is converted into the bridged metallocene compound through reaction with a compound of a group 4b, 5b or 6b metal from the Periodic System of Elements.reaction (II) being carried out in a liquid dispersant whicha) comprises one or more weak Lewis bases, the conjugated acid of which has a dissociation constant pK.sub.a for which the following holds:pK.sub.a .ltoreq.-2.5,b) contains at most 1 mole equivalent, relevant to the metal compound, of strong Lewis base, the conjugated acid of which has a pK.sub.a that is higher than -2.5.The invention further relates to a catalyst component for the polymerization of olefins and a process for the polymerization of olefins and a polyolefin.

Abstract: The invention relates to an indenyl compound of the general formulaR'Ind--M--(Cp)Q.sub.kin which the symbols have the following meanings:Ind: an indenyl groupR': a substituent, other than hydrogen, to the Ind group,Cp: a cyclopentadienyl groupM: a transition metal from group 3, 4, 5 or 6 of the Periodic System of ElementsQ: a ligand to Mand k is an integer linked to the valence of M.The invention is characterized in that the R' group is bound to the Ind group at the 2-position. The indenyl compound is a catalyst component for the polymerization of olefins.The invention also relates to polymers obtainable with such indenyl compounds.

Abstract: The invention relates to microporous films of ultrahigh molecular weight polyethylene and to a process for the preparation thereof by forming a solution of UHMWPE in an evaporable solvent into a film and evaporating the solvent from the film at a temperature below the dissolution temperature, the shrinking tendency occurring in the film being prevented in at least one direction in the plane of the film.

Abstract: The invention relates to a process for preparing an aldehyde compound by hydroformylation of an ethylenically unsaturated organic compound, using a catalyst system which includes a Group VIII metal and a novel bidentate phosphite ligand. The bidentate phosphite ligand has a chemical structure according to formula (1), ##STR1## wherein R.sup.1 and R.sup.3 are respectively substituted or unsubstituted organic groups which may be the same or different, and wherein R.sup.2 is a substituted or unsubstituted tetravalent organic group.

Abstract: The present invention relates to a tufted fabric and a method of manufacturing the same. The tufted fabric generally comprises a primary backing and tufts mounted in the primary backing to form a fabric with a faceside having piles and a backside having loops. A thermoplastic polymer adhesive, which bonds the tufts to the primary backing, is formed by applying a reactive mixture comprising a polymerizable monomer to the backside of the tufted fabric and in-situ polymerizing the monomers to form the thermoplastic polymer adhesive. The process is particularly advantageous for the manufacture of recyclable tufted fabrics in which the adhesive polymer and tufts are formed from substantially the same polymer. The tufted fabric can be used in articles, such as, for example carpets, rugs and upholstery.

Abstract: The invention relates to a catalyst for the epoxidation of alkenes using alkylhydroperoxide, the catalyst comprising an ion of one or more of the metals molybdenum, wolfram, titanium or vanadium on an inorganic carrier, characterised in that the metal ion is bound to the carrier via a polydentate organic ligand.The invention also relates to a process for the preparation of an alkene oxide by an alkene having 3 or more carbon atoms with an alkylhydroperoxide, using the catalyst described above.

Abstract: The present process involves preparing dibenzylamine through the hydrogenation of benzaldehyde in the presence of ammonia and a catalyst containing palladium using a small amount of solvent or dispersion medium. With the present process, dibenzylamine can be prepared with high selectivity in a relatively short reaction time and with complete conversion of the benzaldehyde, at which makes it commercially attractive. In the present process, a palladium-carbon catalyst is preferably used.

Abstract: The invention relates to a dendritic macromolecule comprising a core and branches emanating from the core wherein the branches are based on vinyl cyanide and/or fumaryl dinatrile units. The invention also relates to processes for preparing these dendritic macromolecules. The dendritic macromolecules according to the invention are not sensitive to degradation through hydrolysis reactions and are also very stable at a high temperature. The processes are very suitable for large scale production of the dendritic macromolecules without requiring purification of reaction intermediates.

Abstract: A composite membrane including a microporous polymer film having a high air permeability as a support and a non-porous gas or vapor separating coating having a thickness of not more than 15 .mu.m is provided. The separation factor and flux of the membrane are substantially equal to those of the coating. Also provided is a process for the manufacture of a composite membrane including a support and a gas or vapor separating coating by drawing a polymeric film to which the coating material has been applied, and increasing the viscosity of the coating during drawing.

Abstract: Provided is a radiation curable coating composition suitable for coating optical glass fiber, having a viscosity in the range of about 10 mPas to 10,000 mPas made of about 20 to about 99.9 weight % of at least one of a thermoplastic non-crosslinking polymer and an ethylenically-unsaturated oligomeric compound; optionally, from 0 to about 60 weight % of an ethylenically-unsaturated diluent, optionally, from 0 to about 60 weight % of a multifunctional ethylenically-unsaturated compound, and optionally, from 0 to about 10 weight % of a photoinitiator, provided that if the thermoplastic non-crosslinking polymer is present and no ethylenically-unsaturated oligomeric compound is present, then the ethylenically-unsaturated diluent is present in an amount up to about 60 weight % and the multifunctional ethylenically-unsaturated compound is present in an amount up to about 60 weight %. The composition provides a tack-free handeable fiber after radiation cure and is fugitive upon thermolysis.