Abstract: Conjugated diolefins, optionally in combination with other unsaturated compounds which may be copolymerised with the diolefins, are polymerised by performing the polymerisation of the diolefins in the presence of catalysts based on rare earth compounds, cyclopentadienes and organoaluminium compounds in the presence of aromatic vinyl compounds as the solvent at temperatures of −30 to +100° C.

Abstract: A process for the preparation of superabsorbers is disclosed. The process entails subjecting a polyacrylonitrile precipitation polymer alkaline hydrolysis to obtain a hydrolysis product. The hydrolysate that may optionally be neutralized is dried and ground and optionally modified by crosslinking of its surface. The inventive superabsorber is suitable for the preparation of nappies, incontinence articles, water-storage materials and electric cable coverings.

Abstract: Conjugated diolefins, optionally in combination with other unsaturated compounds which may be copolymerized with the diolefins, are polymerized by performing the polymerization of the diolefins in the presence of catalysts based on monocyclopentadienyl compounds of vanadium and alumoxanes in the presence of aromatic vinyl compounds as the solvent at temperatures of −30 C. to +80 C. By means of the process according to the invention, it is possible to straightforwardly produce solutions of polydiolefins, such as polybutadiene, having 1,2 unit contents of 10 to 30% in aromatic vinyl compounds, which solutions may then, for example, be further processed to yield ABS or HIPS.

Abstract: Impact modified styrene polymers can be prepared by a continuous process for the production of a solution of rubber in vinyl aromatic monomers.

Abstract: A process for producing impact-resistant moulding compositions, which is characterised in that a monomer mixture comprising 90 to 20 parts by weight of an aromatic monoalkenyl compound, 10 to 50 parts by weight of an ethylenically unsaturated nitrile, 0 to 30 parts by weight of other copolymerisable compounds is polymerised by a radical mechanism in the presence of 15 to 50 parts by weight, per 100 parts by weight of monomers, of a soluble, gel-free butadiene polymer, and in the presence of 50 to 200 parts by weight, per 100 parts by weight of monomers, of a solvent, wherein the solvent is selected from the group comprising an aliphatic (C1-C8) or cycloaliphatic alcohol, ketone, ether, ester, nitrile (A) or mixtures thereof or a mixture of (A) with an aliphatic (C4-C10), cycloaliphatic or aromatic hydrocarbon (B) in an A:B weight ratio of 100:0 to 30:70, and the polymerisation is conducted as far as a polymer content of the total mixture of 30 to 70% by weight, with thorough mixing and optionally with

Abstract: A thermoplastic molding composition containing 1 to 99 parts by weight of aromatic polycarbonate or polyester carbonate and 1 to 99 parts by weight of at least one graft polymer prepared by solution polymerization is disclosed. The graft polymer is characterized in having rubber content of 20 to 50 wt. % and in that the average particle size of its rubber phase is 80 to 600 nm. The composition, which optionally contains additives, flameproofing agents and reinforcing agents, is characterized by its improved mechanical properties.

Abstract: A process for the preparation of superabsorbers is disclosed. The process entails subjecting a polyacrylonitrile precipitation polymer alkaline hydrolysis to obtain a hydrolysis product. The hydrolysate that may optionally be neutralized is dried and ground and optionally modified by crosslinking of its surface. The inventive superabsorber is suitable for the preparation of nappies, incontinence articles, water-storage materials and electric cable coverings.

Abstract: A process for the preparation of superabsorbent polymers by alkaline hydrolysis of polyacrylonitrile emulsions is disclosed. In an embodiment of the invention the process comprise preparing a PAN emulsion, subjecting the emulsion to alkaline hydrolysis, neutralizing the hydrolysate followed by drying, granulation and modifying the surface of the granular polymer by crosslinking. The process is characterized in that the isolation of the superabsorbent polymer entails neither alcohols nor organic solvents.

Abstract: Conjugated diolefins, optionally in combination with other unsaturated compounds which may be copolymerized with the diolefins, are polymerized by performing the polymerization of the diolefins in the presence of catalysts based on cobalt compounds, organoaluminum compounds and modifiers in the presence of aromatic vinyl compounds at temperatures of −30° C. to +80° C. By means of the process according to the invention, it is possible straightforwardly to produce solutions of polydiolefins, such as polybutadiene, having different 1,2 unit contents in aromatic vinyl compounds, which solutions may then, for example, be further processed to yield ABS or HIPS.

Abstract: A continuous process for the manufacture of impact resistant polymers is disclosed. The process comprise polymerization of a reaction mixture containing vinylaromatic monomers in the presence of soluble rubber and entails shearing at least some of said mixture at a rate of more than 30000 1/s using a device having no rotating parts. The resulting product is characterized in its low gloss and improved impact properties.

Abstract: Fluorine-containing compositions for treating substrates to render them oil-, water- and soll-repellant, comprising a fluorine-containing acrylic copolymer and a fluorine-free poly(meth)acrylate.

Abstract: Substrates which have been provided with an oil-, water- and soil-repellant treatment from the group consisting of naturally occurring and synthetic textiles and their mixtures, leather, mineral substances, thermoplastic and thermosetting polymers and paper, comprise fluorine-containing compositions which comprise two components A and B.Component A is a fluorine-containing acrylic copolymer with the following comonomers:a) (meth)acrylates containing perfluoroalkyl groupsC.sub.n F.sub.2n+1 --X--O--CO--CR.sup.1 .dbd.CH.sub.2 (I),b) monomers from the group consisting of styrene, acrylonitrile, vinyl acetate, vinyl propionate and monomers,CH.sub.2 .dbd.CR.sup.4 --CO----OR.sup.5 (II),c) monomers ##STR1## and d) monomersCH.sub.2 .dbd.CR.sup.11 COO--CH.sub.2 CH.sub.2 N(R.sup.9, R.sup.10) (IVa)or in quaternized form?CH.sub.2 .dbd.CR.sup.11 --COO--CH.sub.2 CH.sub.2 N(R.sup.9 R.sup.10 R.sup.12)!.sup..sym. Y.sup..crclbar. (IVb)or in N-oxidized form ##STR2## or of the formulaCH.sub.2 .dbd.CR.sup.13 --COO.sup..sym. Z.sup.

Abstract: Oil- and water-repellent papers are treated on the surface or in the pulp of the papers with fluorine-containing copolymers ofa) acrylates containing perfluoroalkyl groups, of the formulaCH.sub.2 .dbd.CR.sup.1 --COO--X--C.sub.n F.sub.2n+1 (I),b) monomers of the formulaCH.sub.2 .dbd.CR.sup.2 --COO--R.sup.3 (II),c) monomers of the formulaCH.sub.2 .dbd.CR.sup.4 --COO--(CH.sub.2 CH.sub.2 O).sub.m --R.sup.5 (III),d) monomers of the formulaCH.sub.2 .dbd.CR.sup.6 --COO--CH.sub.2 CH.sub.2 --N(R.sup.7,R.sup.8) (IVa)or, in salt-like form, of the formula[CH.sub.2 .dbd.CR.sup.6 --COO--CH.sub.2 CH.sub.2 --N(R.sup.7,R.sup.8,R.sup.9)].sup..sym. Y.sup..crclbar. (IVb)or, in N-oxidized form, of the formula ##STR1## and e) monomers of the formulaCH.sub.2 .dbd.CR.sup.10 CONHR.sup.

Abstract: Finishers for texthes, leather, paper and mineral substrates consisting of fluorine-containing copolymers and aqueous dispersions prepared therefrom are characterized by the following percentages by weight of the comonomers, relative to the total weight of the copolymers:a) 60 to 90% by weight of perfluoroalkyl-containing (meth)acrylates of the formulaC.sub.n F.sub.2n+1 --X--0--CO--CR.sup.1 .dbd.CH.sub.2 (I),b) 1 to 35% by weight of monomers of the formulaCH.sub.2 .dbd.CR.sup.4 --COO--R.sup.5 (II)and/or styrene, acrylonitrile, vinyl acetate or vinyl propionate,c) 4 to 25% by weight of monomers of the formula ##STR1## d) 1 to 15% by weight of monomers of the formulaCH.sub.2 .dbd.CR.sup.11 --COOCH.sub.2 CH.sub.2 --N(R.sup.9,R.sup.10)(IVa)or[CH.sub.2 .dbd.CR.sup.11 --COO--CH.sub.2 CH.sub.2 --N(R.sup.9,R.sup.10,R.sup.12)].sup..sym. Y.sup..crclbar.

Abstract: Textiles can be finished in a wash- and cleaning-resistant manner by impregnation if aqueous dispersions are employed for this purpose which contain reactive copolymers and/or cocondensates having perfluoroalkyl groups and water-dispersible polyisocyanate mixtures whose NCO groups are not blocked.

Abstract: Finishing agents for textiles, leather, paper and mineral substrates of the type mentioned in the title and the aqueous dispersions prepared therefrom are characterized by the following percentages by weight of the comonomers, relative to the total weight of the copolymers:a) 45-75% by weight of (meth)acrylates containing perfluoroalkyl groups, of the formulaC.sub.n F.sub.2n+1 --X--OCO--CR.sup.1 .dbd.CH.sub.2 (I)b) 10-50% of monomers of the formulaeCH.sub.2 .dbd.CH--CO--OR.sup.4 (IIa)and/orCH.sub.2 .dbd.C(CH.sub.3)--CO--OR.sup.12 (IIb)c) 4-30% of monomers of the formula ##STR1## d) 1-15% of monomers of the formula ##STR2## The monomers in b) can be replaced completely or partially by monomers from the group consisting of styrene, acrylonitrile, vinyl acetate, vinyl propionate and methyl methacrylate. The substituents have the meaning given in the description.