Abstract: Object of the invention are new diisatoic acid and triisatoic acid derivatives of the general formula I ##STR1## wherein n represents 2 or 3, X stands for oxygen or sulfur and R for a group of the general formula IIY--Z--B].sub.m, (II)in which m stands for 1 or 2, Y for B when m is 1 and Y further represents a di- or trivalent alkyl group with 1 to 5 carbon atoms when m is 2, B represents alkylene with 1 to 4 carbon atoms and Z stands for phenylene-1,4-dioxy or diphenylene-4,4'-dioxy optionally singly or multiply substituted by Cl, NO.sub.2 or alkyl or for a 5- to 7-membered heterocyclic ring which is optionally substituted by one or more of said substituents and has one or more atoms selected from the group consisting of N, S and O as members of the ring, with a benzene nucleus optionally being annulated to said ring, and a process for the production of these compounds which is characterized in that a compound of the general formula IIIR--XH).sub.

Abstract: Polyurea polymer compositions produced by reaction of isocyanates with compounds having terminal amino groups, said compounds being of the formula ##STR1## wherein z is 2 or 3, X is oxygen or sulfur and R stands for a z-valent group of the formula ##STR2## wherein k is 1 or 2, A is alkylidene or alkylated or non-alkylated vinylene, Y is B when k=1 and z=2; when k=2 and z=2; then Y is --CH.sub.2 --; when k=2 and z=3, then Y is ##STR3## and B in each case represents a divalent polyalkylene ether group or a polyalkylene thioether group such as is obtained by removal of the hydroxyl or mercapto groups from a polyalkylene ether diol or a polyalkylene thioether diol of a molecular weight of 100 to 15000. The polymer compositions are useful for the formation of vehicle tires of all types and for the formation of portions of vehicle wheels, for belts, fasteners and shoe soles.

Abstract: Polyurea polymer compositions produced by the isocyanate polyaddition process by reacting compounds having terminal groups and represented by the general formula: ##STR1## wherein z is an integer of 2 to 4, X is oxygen or sulfur and R is a group of the formula:-Y-[Ar-B].sub.kwherein k is an integer of 1 to 4, Ar is an aromatic group, Y is B when k is 1 and when k is 2, then Y is an alkylidene group having 1 to 5 carbon atoms and B represents a divalent polyalkylene ether group or polyalkylene thioether group such as is obtained by the removal of the hydroxyl or mercapto groups from a polyalkylene ether diol or a polyalkylene thioether diol of a molecular weight of about 100 to 15000, with a polyisocyanate. The polymer compositions are useful for the formation of vehicle tires of all types and for the formation of portions of vehicle wheels, for belts, fasteners and shoe soles.

Abstract: New polyurea polymer compositions are disclosed which are prepared by a polyaddition reaction of a polyisocyanate with a compound having the general formula: ##STR1## wherein X is oxygen or sulfur and R represents a group of the formula: ##STR2## wherein R.sub.1 to R.sub.4 are hydrogen or halogen and B stands for a divalent polyalkylene ether group or a polyalkylene thioether group such as it is obtained by removal of the hydroxyl or mercapto groups from a polyalkylene ether diol or from a polyalkylene thioether dithiol of a molecular weight of 100 to 15000. The polymer composition are useful for the formation of vehicle tires of all types including plastic components for parts of wheels, for conveyor belts, fasteners and shoe soles.

Abstract: The invention relates to novel poly(thio)ethers having terminal amino groups, a process for their production and their application in the production of polyureas showing increased thermal stability and improved tensile and structural strength.

Abstract: Poly(thio) ethers having terminal amino groups, said ethers having the formula: ##STR1## wherein X is oxygen or sulfur and R stands for a group of the formula ##STR2## wherein R.sub.1 to R.sub.4 represent hydrogen or halogen and B stands for a divalent polyalkylene ether group or a polyalkylene thioether group or mixtures thereof such as is obtained by removal of the hydroxyl or mercapto groups from a polyalkylene ether diol or a polyalkylene thioether dithiol of a molecular weight of 100 to 15000. A process for the production and application is also disclosed. These ethers are used in the production of poly ureas having increased thermal stability and improved tensile and structural strength.

Abstract: Compounds having terminal amino groups and being of the general formula ##STR1## wherein z is an integer of 2 to 4, X is oxygen or sulfur and R is a group of the formula--Y--[Ar--B].sub.k (II)wherein k is an integer of 1 to 4,Ar is aromatic,When k = 1, Y is B and when k = 2 to 4 then Y is an akylidene group having 1 to 5 carbon atoms,B represents divalent polyalkylene ether or polyalkylene thioether such as it is obtained by removal of the hydroxyl or mercapto groups from a polyalkylene ether diol or a polyalkylene thioether dithiol of a molecular weight of about 100 to 15000. The compounds are useful to prepare polyureas.

Abstract: Apparatus casting for injection-molding car tires whose internal contour is determined by a core and whose external contour is established by mold shells which are, at least partially, provided with lateral shells movable in an axial direction, thereby the various regions of the tires being cast or injected in separate operations. The mold shells, in addition to lateral shells, are provided with external segments and at least two external segments of different shape are pivotedly attached to segment holders positioned around the tire being produced so that the segment holders are radially adjustable with respect to the tire under production.

Abstract: A tire body of elastomeric material, terminating in two beads on opposite sides of its cavity, has a sole free of reinforcing cords carrying a tread on its outer surface and a belt of elastomeric material disposed either between the tread and the body or on the inner body surface. The belt has a stress/strain ratio at 20.degree. C and with 50% elongation which is at least 30% higher than the corresponding stress/strain ratio of the tire body.

Abstract: A process for producing polyurethane elastomers in which a polyester diol is formed with a molecular weight between 3000 and 30,000 and is then reacted with a diisocyanate. ##STR1## wherein A is D, --(CH.sub.2) .sub.m O--.sub.n or ##STR2## B is --(CH.sub.2 --or --CH= CH-- and D is a bivalent residue formed by removing the hydroxyl group from one of the following diols:Bis-[5,5-dimethyl-3- (2-hydroxyethyl)-hydantoinyl]-methane,Sebacinic acid-di-{1-methyl-2-[3-(2-hydroxyethyl]-4,4-dimethyl-hydantoinyl}-ethyl ester,1,3-di-(2-hydroxyethyl)-5,5-dimethyl hydantoin1,3-di-(2-hydroxyethyl)-benzimidazolone1,3-di-(2-hydroxyethyl)-4,5,6,7-tetrabromo bezimidazolone1,3-di-(2-hydroxyethyl-4,5,6,7-tetrahydro-bezimidazoloneBis-[5,5-dimethyl-3-(2-hydroxypropyl)-hydantoinyl]-methane1,3-di-(2-hydroxypropyl)-5,5-dimethyl hydantoin or1,3-di-(2-hydroxypropyl)-benzimidazolonee, m and n being whole numbers.