Abstract: The present invention is directed to a RIM process wherein an isocyanate-terminated prepolymer is reacted with one or more isocyanate-reactive components which contian inorganic fillers. The improvement resides in including an acidc group containing compound with the isocyanate reactive components.

Abstract: Polyamines containing primary amino groups are made by hydrolyzing an isocyanate with water in the presence of a solvent which is a carboxylic acid amide. The solvent must be used in a quantity of at least 10% by weight solvent based on 100% by weight of isocyanate. The weight ratio of solvent to water must be from 3 to 200. A homogeneous phase is maintained during the hydrolysis which is carried out at temperatures of from 20.degree. to 210.degree. C. A not incorporable basic and/or metal catalyst particularly alkali metal hydroxides may be employed. The polyamines produced by this process are particularly useful for the production of polyurethanes.

Abstract: The present invention relates to a process for the production of an optionally cellular elastomeric molded article having a compact surface and based on a polyurea elastomer containing urethane groups which is the reaction product ofa) a polyisocyanate component based on a polyisocyanate of the diphenylmethane series,b) a polyol component based on a polyether polyol, a polyester polyol or mixtures thereof andc) a polyamine component containing1) 50 to 95% by weight, based on the weight of component c), of at least one sterically hindered aromatic diamine and2) 5 to 50% by weight, based on the weight of component c), of at least one compound which has a molecular weight of about 1,000 to 12,000,by reacting component a) with at least 90% by weight of component b) at an NCO/OH equivalent ratio of at least 4:1 to form an NCO semi-prepolymer and subsequently reacting the NCO semi-prepolymer with component c) and the remainder of component b) by the reaction injection molding process to form the polyurea elastomer

Abstract: A process for the preparation of optionally cellular elastic moldings by the reaction injection molding technique in closed molds, in which isocyanate prepolymers A) based ona) polyisocyanates of the diphenylmethane series andb) polyether polyols having a maximum hydroxyl functionality of 2.4 are reacted with a reactive component B) consisting essentially of aromatic, alkyl-substituted diamines, optionally with the addition of auxiliary agents and additives d).

Abstract: The present invention relates to a process for the production of polyurethane-urea or polyurea-based microcellular of foam moldings by reacting a polyisocyanate component containing aromatically bound isocyanate groups with an isocyanate-reactive component containing at least one compound which has at least three aliphatic ether groups and aliphatically bound isocyanate-reactive groups and wherein a portion of the aliphatically bound-reactive groups are amino groups which have been converted to ammonium carbamate, carbonate or bicarbonate groups.The present invention also relates to the compounds containing aliphatic ether groups and ammonium carbamate, carbonate or bicarbonate groups, optionally in admixture with compounds containing unmodified amino groups or other known isocyanate-reactive compounds.

Abstract: The present invention is directed to a process for the production of polyurea-based microcellular moldings comprising reacting(a) at least one diisocyanate or polyisocyanate containing only aromatically bound isocyanate groups,(b) at least one compound containing at least two isocyanate-reactive groups, and(c) optionally the auxiliaries and additives known in polyurethane chemistry, in closed molds, components (a)-(c) being processed as a one-shot system by reaction injection molding, characterized in that component (b) comprises at least one polyether compound (b1) optionally in admixture with other isocyanate-reactive compounds and containing at least 3 aliphatically bonded ether groups and n-aliphatically bonded isocyanate-reactive groups, n standing for an integer or, statistically a fraction of from 2-4(i) at least (100:n) % of the isocyanate-reactive groups present in component (b1) being aliphatically bonded primary and/or secondary amino groups,(ii) at least 10 equivalent % of said amino groups being

Abstract: The instant invention is directed to a process for the production of vulcanized elastomers containing urethane groups by casting, comprising:(A) mixing the following components:(1) liquid diene polymers containing isocyanate reactive functional groups,(2) compounds having molecular weights of from 400 to 10,000, and containing at least two hydroxyl groups,(3) polyisocyanates,(4) cross-linking agents having molecular weights of from 32 to 400 and containing at least two active hydrogen atoms,(5) vulcanization agents used for vulcanization and optionally(6) reinforcing fillers; and subsequently(B) pouring the mixture into a mold and allowing the mixture to react in the mold; and subsequently(C) vulcanizing the molded product at temperatures above 120.degree. C.

Abstract: The instant invention is directed to a process for the production of polyurethane urea elastomers having a gross density of more than 200 kg/m.sup.3 comprising: casting a reaction mixture of(A) an isocyanate prepolymer produced from(a) 1 mole of a compound containing at least 2 Zerewitinoff-active hydrogen atoms and having a molecular weight of from 400 to 10,000 and(b) 2 to 10 moles of diisocyanatodiphenylmethane,(B) an aromatic diamine, and(C) 0 to 50 mole percent, based on component (B), of a polyol containing primary hydroxyl groups and having a molecular weight of from 62 to 6000, the equivalent ratio between component (A) and components (B) + (C) amounting to between 0.9:1 and 1.

Abstract: A process for making cold-setting, non-shrinkable polyurethane foam resins using a mixture of silicon compounds of the formula:A.sub.x B.sub.x+2whereinx=2-25, preferably 2-5A is the group R' Si O.sub.3/2B is the group (R).sub.3 Si O.sub.1/2R represents an alkyl group having from 1 to 3 carbon atomsR' represents an aryl group having from 6 to 14 carbon atoms, with the proviso that the mixture contains at least one compound wherein x is greater than 3.

Abstract: This invention relates to a process for the production of polyurethane resins (more particularly foam resins) in which linear polyamines containing at least four tertiary nitrogen atoms are used as catalysts. The compounds correspond to the general formula: ##STR1## wherein the groups R, which may be the same or different, represent methyl or ethyl groups; m represents an integer of from 2 to 7; and the integers n, which may be the same or different, represent 2 or 3.

Abstract: This invention relates to novel flame retarding agents and processes in which they are used in the production of polyurethanes. These compounds are represented by the general formula: ##STR1## wherein: A and L, which are identical or different, represent optionally branched C.sub.1 -C.sub.17 -alkyl groups or -OR groups wherein R represents an optionally branched C.sub.1 -C.sub.8 -alkyl group, andX represents hydrogen, halogen, an optionally branched C.sub.1 -C.sub.8 alkyl group, a C.sub.6 -C.sub.12 aryl or aralkyl group, NH.sub.2, CF.sub.3, CN, COOR', SO.sub.3 R', ##STR2## wherein: R' represents hydrogen or an optionally branched alkyl or cycloalkyl group having 1-10 C atoms andR" represents an optionally branched alkyl or cycloalkyl group having 1-10 C atoms.

Abstract: This invention relates to novel halogen-free flame retarding agents and a process in which they are used in the production of polyurethanes. These compounds are represented by the general formula: ##STR1## wherein: R.sub.1 represents C.sub.1 -C.sub.5 alkylene groups which may be branched,R.sub.2 represents C.sub.1 -C.sub.3 alkyl groups which may be branched or R.sub.1 OH andR.sub.3 represents C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -dialkylamino, C.sub.1 -C.sub.4 -oxyalkyl, C.sub.1 -C.sub.4 -thioslkyl, C.sub.6 -C.sub.14 -aryl or C.sub.7 -C.sub.15 -aralkyl groups or ##STR2## and A and L may be identical or different and represent C.sub.1 -C.sub.10 -alkyl groups, which may be branched, benzyl groups or OR groups, whereinR represents an alkyl group, with 1-8 C atoms which may be branched, or a benzyl group.

Abstract: The invention relates to a process for preparing cold-hardening foams containing urethane groups using as an emulsifier, sulphonamide compounds of the formula: ##STR1## wherein R represents an alkyl, chloroalkyl, cycloalkyl radical having from 8 to 30 carbon atoms, or an alkaryl radical having from 10 to 30 carbon atoms,R.sup.1 and R.sup.2, which may be the same or different, each represent a hydrogen atom, a chloromethyl, methyl, ethyl or phenyl radical,m is an integer of from 0 to 50,R.sup.3 represents a hydrogen atom, an alkyl, aralkyl, alkaryl, aryl radical or a --(CHR.sup.1 -CHR.sup.2 -O-).sub.m R.sup.4 - group andR.sup.4 represents a hydrogen atom, an alkyl, aralkyl, acyl, carbamoyl or cyanalkyl radical having from 1 to 20 carbon atoms.The use of these additions results in an increase in compression hardness without detrimental effects on other foam properties.

Abstract: This invention relates to novel flame retarding agents and processes in which they are used in the production of polyurethanes. These compounds are represented by the general formula: ##STR1## wherein: A and B, which are identical or different, represent optionally branched C.sub.1 -C.sub.17 -alkyl groups or --OR groups wherein R represents an optionally branched C.sub.1 -C.sub.8 -alkyl group, andX represents hydrogen, halogen, an optionally branched C.sub.1 -C.sub.8 alkyl group, a C.sub.6 -C.sub.12 aryl or aralkyl group, NH.sub.2, CF.sub.3, CN, COOR', SO.sub.3 R', ##STR2## wherein: R' represents hydrogen or an optionally branched alkyl or cycloalkyl group having 1-10 C atoms andR" represents an optionally branched alkyl or cycloalkyl group having 1-10 C atoms.

Abstract: This invention relates to a process for the making of cold-hardening foams containing urethane groups by in-mold foaming. The need to use a relatively large number of additives like emulsifiers, stabilizers and activators can be eliminated by using certain silicon compounds of a specific formula. Foamable reaction mixtures using these compounds with polyethers, polyisocyanates, water and/or organic blowing agents, and catalysts will produce foams with properties acceptable for use in upholstery, cars, and furniture.

Abstract: The present invention relates to a process for the production of polyurethane foams by reacting1. organic compounds with at least two hydrogen atoms capable of reacting with isocyanates and having molecular weights in the range from 400 to 10,000,2. polyisocyanates,3. water and/or organic blowing agents in the presence of catalysts containing tertiary nitrogen and, optionally, other additives, the improvement wherein the catalysts used are polyacyl compounds corresponding to the general formula: ##STR1## wherein A represents a C.sub.1 -C.sub.6 alkylene group, preferably a C.sub.2 or C.sub.3 alkylene group;R represents a C.sub.1 -C.sub.