Abstract: In multimetal cyanide complexes, more than 30% by weight of the primary particles have a platelet-like habit, i.e. the length and width of the primary particles is at least three times the thickness of the particles.

Abstract: Catalyst suspensions for the ring-opening polymerization of alkylene oxides comprise

Abstract: A molding, preferably a film-like molding, is produced by a process which comprises the following stage:

Abstract: The thermoplastic, isocyanate-free polyurethane which contains acidic groups, is soluble in tetrahydrofuran, has a molecular weight of from 15,000 to 70,000 and is composed ofA) 1 mol of a polyol having a molecular weight of from 400 to 4000,B) from 0.3 to 9 mol of a mixture ofB1) if required, a diol of 2 to 18 carbon atoms andB2) from 0.03 to 0.4 mol of a diol having at least one acidic group,C) from 0 to 1 mol of a polyol having 3 to 18 carbon atoms and at least 3 OH groups,D) from 1.25 to 13 mol of a diisocyanate of 6 to 30 carbon atoms andE) from 0 to 1 mol of a primary or secondary amino alcohol of 2 to 16 carbon atoms,the molar ratio of the OH and any NH groups present in the sum of the components A, B, C and E to the NCO groups of component D being from 0.98 to 1.4, is obtainable by reacting the above components in the melt and is suitable in particular as a binder for magnetic recording media.

Abstract: Polymers I suitable as dispersing resins are obtained by reactingA. a polymer II obtained by reacting at least one compound III selected from the group consisting ofa) an ester IV ofa1) an .alpha.,.beta.-unsaturated carboxylic acid V anda2) an alkyl alcohol VI of 1 to 25 carbon atoms,b) an ester VII ofb1) vinyl alcohol andb2) a saturated carboxylic acid VIII of 1 to 4 carbon atoms,c) vinyl chlorided) styrene or vinyl benzenes which carry an alkyl group of 1 to 4 carbon atoms on the benzene ring, in the presence of a compound IX which contains an N-oxyl radical function, withB. at least one compound X comprisinga) 50 to 100% by weight, based on X, of at least one compound XI selected from the group consisting ofa1) an ester XII ofa) an .alpha.,.beta.-unsaturated carboxylic acid XIII andb) an alkyl alcohol XIV of 2 to 10 carbon atoms which carries at least one polar or acidic group,a2) an amide XV ofa) an .alpha.,.beta.

Abstract: Polyurethanes I obtained by reacting1) an isocyanate II as defined in the specification with2) a compound V which is suitable as chain extender, obtained bya) reacting a polyhydric alcohol VI withb1) a compound VII, which includes an epoxy function and, in addition, an alcohol-reactive functional group, to form a compound VIII, and reacting a compound VIII with an .alpha.,.beta.-olefinically unsaturated carboxylic acid IX to give a compound X orb2) an .alpha.,.beta.-olefinically unsaturated carboxylic acid IX, to give a compound X andc) reacting a compound X with an amine XI having at least one primary amino which is reactive toward the .alpha.,.beta. multiple bond of IX,the sum of the number of isocyanato-reactive aminos and hydroxyls of the compound V being greater than the number of isocyanate groups of the compound II. The polyurethanes are useful as binders or binder components for pigment0free or pigment-containing coatings.