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: Flame resistant foams and other compositions containing polyurethane and/or polyisocyanurate groups are prepared by reacting an organic polyisocyanate with a polyol in the presence of flame retardants, catalysts, blowing agents as well as optionally chain extenders, cross-linkers auxiliaries and additives. The flame retardents comprise a phenol or melamine formaldehyde condensate, pentaerythritol as well as ammonium phosphate and preferably in addition dicyandiamide.

Abstract: Lactones and lactams are utilized in the preparation of urethane modified prepolymers based on diphenylmethane diisocyanate, uretonimine-modified diphenylmethane diisocyanate. The prepolymers are then employed to prepare microcellular foams suitable for shoe soles and cast polyurethane products.

Abstract: The invention pertains to flame retardant polyurethane foams prepared by the reaction of a polyoxyalkylene polyether polyol with an organic polyisocyanate and a blowing agent wherein melamine is incorporated as the sole flame retardant compound. The amount of melamine may range from about 10 weight percent to about 55 weight percent of the total composition.

Abstract: The invention describes a process for the preparation of N,o-substituted mono- and/or polyurethanes of formulaR.sup.1 [--NHCOOR.sup.2 ].sub.n,in whichR.sup.1 is an aliphatic, cycloaliphatic, aromatic, araliphatic, or heterocyclic radical, which may be substituted,R.sup.2 is an aliphatic, cycloaliphatic, or araliphatic radical which may be substituted with alkoxy or polyoxyalkylene groups, andn is a whole number from 1 to 5,through the reaction of N-substituted allophanates and/or polyallophanates with alcohols R.sup.2 OH in the presence or absence of catalysts at temperatures of at least 160.degree. C., preferably from 165.degree. to 250.degree. C.

Abstract: A RIM polyurethane elastomer prepared by reacting an organic polyisocyanate, a polyoxyalkylene polyether polyol, and a chain extender. The polyol contains from about 7 weight percent to about 40 weight percent ethylene oxide either as a block or a heteric structure.

Abstract: Organic polyisocyanates characterized by allophanate linkages are prepared by reacting an organic polyisocyanate with a mono- or polyhydric compound in the presence of an organo metal catalyst. The catalyst is then deactivated using a compound such as an inorganic acid, organic acid, organic chloroformate or an organic acid chloride. The isocyanates are useful in preparing polyurethane foams.

Abstract: The invention describes a process for the preparation of N,o-substituted mono- and/or polyurethanes of formulaR.sup.1 [--NHCOOR.sup.2 ].sub.n,in whichR.sup.1 is an aliphatic, cycloaliphatic, aromatic, araliphatic, or heterocyclic radical, which may be substituted,R.sup.2 is an aliphatic, cycloaliphatic, or araliphatic radical which may be substituted with alkoxy or polyoxyalkylene groups, andis a whole number from 1 to 5,through the reaction of N-substituted allophanates and/or polyallophanates with alcohols R.sup.2 OH in the presence or absence of catalysts at temperatures of at least 160.degree. C., preferably from 165.degree. to 250.degree. C.

Abstract: Graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Processes for the preparation of these polymer dispersions employ fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkylene oxide in the presence of salts and oxides of divalent metals. The polymer dispersions are prepared in the presence of a reaction moderator and employ 50 weight percent or more of acrylonitrile.

Abstract: White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the preparation of these polymer dispersions employ either maleate or fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol in the presence of a chain transfer agent with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkyklene oxide in the presence of salts and oxides of divalent metals.

Abstract: Film faced expanded polystyrene foam board is prepared by heat laminating expanded polystyrene board with a film composition comprising a high density polyethylene film layer and a heat activated low density adhesive film layer. This board is useful in the construction industry.

Abstract: Rigid polyurethane foams which exhibit constant or slightly decreasing strain with an increasing stress in compression are prepared employing from 30 to 60 parts of an oxyalkylated toluenediamine polyol per 100 parts of polyol mixture. These foams may be employed in shoring up geological formations.

Abstract: Graft polymer dispersions in a polyol are prepared by a continuous process employing in situ free radical polymerization of an ethylenically unsaturated monomer in a polyol containing from about 0.001 to 0.09 mole of induced unsaturation per mole of polyol in the presence of an effective amount of a chain transfer agent. Products prepared by this process have uniform viscosity with resulting product uniformity. Polyurethane foams incorporating flame retardants prepared from these dispersions readily pass the California No. 117 Flame Test.

Abstract: The invention relates to a process for the preparation of cellular or noncellular plastics, preferably polyurethane coatings, by reacting at least two components with one another, preferably organic polyisocyanates and polyhydroxyl compounds, by feeding the components into a mixing zone separately, and mixing them together and then discharging the reaction mixture from the mixing zone, while adding air heated to a temperature of 100.degree. to 1200.degree. C. to the reaction mixture as it emerges from the mixing zone.

Abstract: A delayed co-initiation process for preparing polyol blends comprising(a) oxyalkylating a first initiator compound to obtain a polyol with a predetermined equivalent weight; and(b) adding a second initiator which may be the same as or different from the first and oxyalkylating to obtain a polyol with a predetermined equivalent weight based upon the second initiator.The resultant polyols are used in the preparation of polyurethane foams.

Abstract: The invention relates to a thermoplastic molding material of an elastomeric polymer A, a shell B grafted to the polymer A, and a copolymer C as rigid matrix. The amount of polymer A is 1 to 25 percent by weight based on the weight of A+B+C. It has a glass transition temperature, Tg, of less than 0.degree. C. and an average particle size of 200 to 750 nanometers (d.sub.50 value of the integral mass distribution) and is composed of: 50 to 99.9 percent by weight of at least one alkylacrylate with 1 to 8 carbon atoms in the alkyl radical and 0.1 to 5 percent by weight of a polyfunctional monomer which has a crosslinking action. Grafting shell B represents 5 to 40 percent by weight based on A+B+C and is composed of at least one of the monomers of the group of(b.sub.1) vinylaromatic monomers, and(b.sub.2) the ethylenically unsaturated monomers.Grafting shell B is prepared in two stages with 30 to 70 percent by weight of the monomers b.sub.

Abstract: Rigid polyurethane foams which exhibit constant or slightly decreasing strain with an increasing stress in compression are prepared employing from 30 to 60 parts of an alkoxylated toluenediamine polyol per 100 parts of polyol mixture. These foams may be employed in shoring up geological formations.

Abstract: The invention relates to polyurethane sealant compositions prepared by reacting a polyether polyol other than one derived from monoethanolamine, an alkylene oxide adduct of monoethanolamine, optionally pigment, catalyst and inorganic filler, and an organic polyisocyanate. The compositions are useful as thermal break sealants and in the manufacture of bowling balls.

Abstract: In order to prepare thermoplastic polyurethane elastomers(a) organic diisocyanate,(b) polyhydroxyl compounds with molecular weights of 500 to 8,000, and(c) chain extenders with molecular weights of 60 to 400 in the presence of(d) catalysts, and optionally(e) auxiliaries, and/or(f) additivesare reacted in two reaction stages at temperatures from 60.degree. C. to 250.degree. C. In the first reaction stage the components are continuously mixed, the reaction mixture is applied to a carrier, preferably a conveyor band of thermoplastic material, and is allowed to react at the reaction temperature until solidified. Subsequently, the solidified reaction mixture is melted in an extruder and the reaction is completed in the second reaction stage.

Abstract: This invention relates to oxyethylated toluenediamine and diaminodiphenylmethane and their use as chain extenders in the preparation of polyurethane-polyurea elastomers.