Abstract: The present invention relates to a process for the production of elastic, compact or cellular moldings based on elastomers containing N-benzylurea groups in bound form, by reactinga) one or more organic and/or modified organic polyisocyanates withb) N-benzylpolyoxyalkylene-polyamines or mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing from 2 to 4 primary amino groups andc) one or more alkyl-substituted aromatic polyamines having a molecular weight of up to 500,in the presence or absence ofd) catalystsand, if desired,e) blowing agents,f) auxiliaries and/org) additives,and to the N-benzylpolyoxyalkylene-polyamines and mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing from 2 to 4 primary amino groups which can be used for this purpose, and to the elastomers prepared.

Abstract: The present invention relates to a process for the production of elastic, compact or cellular moldings based on elastomers containing N-benzylurea groups in bound form, by reactinga) one or more organic and/or modified organic polyisocyanates withb) N-benzylpolyoxyalkylene-polyamines or mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing from 2 to 4 primary amino groups andc) one or more alkyl-substituted aromatic polyamines having a molecular weight of up to 500,in the presence or absence ofd) catalystsand, if desired,e) blowing agents,f) auxiliaries and/org) additives,and to the N-benzylpolyoxyalkylene-polyamines and mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing from 2 to 4 primary amino groups which can be used for this purpose, and to the elastomers prepared.

Abstract: The invention relates to a process for the production of elastic, compact or cellular moldings based on elastomers containing N-substituted urea and amide groups in bound form, by reactinga) one or more organic and/or modified organic polyisocyanate withb) a polyazomethine-containing polyoxyalkylene-polyamine mixture (b) which contains:bi) one or more polyoxyalkylene-polyaldimine and/or polyketimine,bii) one or more polyoxyalkylene-polyamine containing terminal secondary amino groups, and, if desired,biii) one or more polyoxyalkylene-polyamine containing terminal primary amino groups andc) one or more alkyl-substituted aromatic polyamine having a molcular weight of up to 500, in the presence or absence ofd) catalyst, and, if appropriate,e) blowing agents,f) auxiliaries and/org) additives,to polyazomethine containing polyoxyalkylene - polyamine mixtures which can be used for this purpose and to the prepared elastomers.

Abstract: This invention deals with novel copolymers having K values of from 5 to 80 prepared by the radical polymerization of:(A) 20 to 80 weight percent, based on the total weight of (A) and (B), of at least one olefinic unsaturated polyoxyalkylene alcohol adduct or a polyester alcohol adduct;(B) 80 to 20 weight percent, based on the total weight of (A) and (B), of at least one vinyl monomer selected from the group consisting of N-vinylformamide, N-vinyl-2-pyrrolidone, N-vinyl-piperidone, N-vinyl-2-caprolactam, N-vinylimidazole, N-vinyl-2-ethylene-urea and N-vinyl-2-propylene-urea;(C) 0.05 to 40 parts by weight of glycidyl acrylate and/or glycidyl methacrylate;(D) 0 to 10 parts by weight of at least one .alpha.,.beta.-monoolefinic unsaturated acid; and(E) 0 to 30 parts by weight of at least one olefinic unsaturated carboxylic acid amide and or carboxylic acid ester and/or styrene;whereby the parts by weight of (C), (D) and (E) are each based on 100 parts by weight of monomers (A) and (B).

Abstract: The subject of this invention is elastomers containing polyamide groups and polyurea groups in bonded form, which are prepared by the reaction of(a) at least one organic polyisocyanate and/or a modified polyisocyanate mixture having an NCO content of from 8 to 33.6 weight percent,(b) at least one polyazomethine and(c) at least one alkyl-substituted aromatic polyamine having a molecular weight up to 500,in the presence of or in the absence of(d) catalysts,whereby reaction products of polyoxyalkylenepolyamines, having a functionality of from 2 to 4 and an average molecular weight of from 180 to 10,000 and at least one organic aldehyde and/or preferably ketone, are used as the polyazomethines.

Abstract: Disclosed are internal mold release agents for the preparation of molded articles using polyisocyanate addition polymerization, which are comprised of:(A) at least one ketimine, aldimine, enamine, cyclic Schiff base or a mixture of at least two of said compounds;(B) at least one metal salt of an organic carboxylic acid having from 8 to 24 carbon atoms; and(C) optionally including at least one carboxylic acid, organic sulphonic acid, mineral acid, or amidosulphonic acid, and their use in preparing molded articles comprised of polyurethane-plastics, polyurea-plastics, polyurethane-polyurea-plastics, polyurethane-polyurea-polyamide-plastics, or polyurea-polyamide-plastics.

Abstract: The invention relates to a process for the preparation of cellular or non-cellular polyurethane-polyurea molded articles. The new process involves the use of urethane and isocyanurate group modified 2,4- and/or 2,6-toluene diisocyanate mixtures as the polyisocyanate component to improve the flowability of the reaction mixture without adversely affecting the mechanical properties of the resulting molded articles.

Abstract: The invention relates to a process for the preparation of cellular, microcellular and noncellular polyurethane polyurea molded parts through the reaction of organic polyisocyanates, polyols having at least 2 reactive hydrogen atoms, and a chain extender containing at least 70 percent by weight of a mixture of aromatic diamines comprising from 80 to 50 weight percent of at least one primary aromatic diamine whose amino groups are sterically hindered relative to reaction with polyisocyanates, and 20 to 50 weight percent of at least one unsubstituted or substituted reactive primary aromatic diamine whose amino groups do not exhibit reduced reactivity to polyisocyanates.These reactive mixtures produce polyurethane polyurea polymers with excellent demoldability without the use of external mold release agents.

Abstract: The invention relates to a one-shot process for the preparation of cellular or noncellular polyurethane polyurea parts having a modulus of flexural elasticity greater than 600 N/mm.sup.2 and densities of from 0.8 to 1.2 g/cm.sup.

Abstract: The invention relates to a process for the preparation of elastomeric molded parts having urethane or urethane and urea linkages which comprises reacting(a) an organic polyisocyanate,(b) a polyhydroxyl compound selected from the group consisting of(i) polyester polyols with molecular weights of 1000 to 3000 and hydroxyl numbers of 170 to 35 produced by polycondensation of organic dicarboxylic acids and a polyol mixture of at least 3 polyols;(ii) polyether polyols having terminal ester groups, molecular weights of 1000 to 8000 and hydroxyl numbers of 170 to 15; and(iii) mixtures thereof;(c) a chain extenderwherein components (a) through (c) are processed according to reaction injection molding techniques in open or closed molds.The reaction is preferably carried out as a one-shot process and may also be carried out in the presence of blowing agents (d), auxiliaries (e), and additives (e).

Abstract: The invention relates to a process for the preparation of cellular, microcellular, and noncellular polyurethane polyurea molded parts with improved demolding characteristics through the reaction injection molding technique wherein unique internal mold release agents are used which are esters and/or amides prepared by reacting a mixture of montanic acid and a carboxylic acid having ten or more carbon atoms with a polyol, alkanolamine, or polyamine.

Abstract: Low temperature flexible polyurethane elastomers are prepared by reacting organic polyisocyanates with polyester polyols which have glass transition temperatures of -10.degree. to -80.degree. C. and incorporating therein alkoxylated esters of fatty acids and/or alkoxylated terpene alcohols.