Abstract: Siloxane copolymer mixtures comprising a minor amount of certain high molecular weight (e.g., 4000 to 30,000) siloxane-oxyalkylene copolymers and a major amount of certain low molecular weight (e.g., 300 to 1100) siloxane-oxyalkylene copolymers or cyanoalkylsiloxanes in specifically defined mixture ratios; a process for producing high resilience polyurethane foam utilizing as a foam stabilizer said siloxane copolymer mixtures; and the foams derived therefrom.

Abstract: Tufted or woven article having a unitary backing is prepared by applying to the underside of a tufted or woven textile article, a polyurethane-forming composition comprising(A) a relatively high molecular weight polyether polyol;(B) a relatively low molecular weight polyol;(C) an organic polyisocyanate or polyisothiocyanate;(D) an inorganic filler component.The present invention describes a carpet comprising (I) a primary backing; (II) a yarn tufted or woven through said primary backing thereby creating a yarn bundle on the underside of the resultant tufted or woven textile article and (III) a polyurethane composition applied to the underside thereby encapsulating the yarn bundles and adhering the yarn bundles to the primary backing; said polyurethane composition comprising the catalyzed reaction product of the composition described above.

Abstract: Synthesis of integral skin microcellular polyurethane elatomers by reacting hydroxyl-terminated aliphatic polyesters with symmetrical diisocyanates, prepolymers of these isocyanates such as derived from p,p'-diphenylmethane diisocyanate and an aliphatic glycol and mixtures thereof, these are polymerized in the presence of an organic blowing agent, and one or more plasticizers such as of the formulae ##STR1## further enhancement of the results is brought about by the presence of catalysts and cell regulating agents, such as dimethylpolysiloxanes; the obtained elastomers are useful, such as for shoe soles and in the manufacture of other products, e.g., vibration dampening devices, floatation devices, gaskets and the like.

Abstract: Small particles of cellulose-containing plants, fine granular oxidated, silicon compounds and an alkali metal hydroxide are mixed, then heated to 150.degree. C. to 220.degree. C. while agitating until the plant particles soften or melt, thereby producing an alkali metal cellulose silicate condensation product.

Abstract: A process is presented for forming flexible foam, polyurethane foam material having an integral skin, and polyurethane foam laminates, from a thermosetting frothed mixture, particularly a mechanically frothed mixture. Also presented is a flexible polyurethane foam material having an integral skin, and polyurethane foam laminates.

Abstract: The invention relates to a method of making branched polysiloxane-polyoxyalkylene copolymers and to their use as stabilizers in the production of polyurethane foam plastics. The copolymers are made by reacting specified organopolysiloxanes with polyisocyanates, heat treating the NCO--containing addition products to cause branching and reacting the branched NCO--containing addition products with monofunctional polyethers. The copolymers can be used to stabilize polyurethane foam reaction mixtures.

Abstract: Polyisocyanates are reacted chemically with an oxidated silicon compound to produce a polyisocyanate silicate prepolymer. The polyisocyanate silicate prepolymer will react with organic compounds to produce a polyisocyanate organic silicate solid/cellular solid product.

Abstract: Liquid isocyanate-terminated polyurethane prepolymers are cured by mixing them with 10% to 200% by weight, based on the weight of the prepolymer, of an organic hydroxy silicate compound or their condensation product. The cured material may be non-porous elastomeric products or fine cellular products.

Abstract: Improved diecuttable polyester urethane foams are provided by the inclusion in the foam formulation of specified minor amounts of certain low molecular weight polyols, typically having hydroxyl numbers of 100 or greater. Representative useful species of such polyols include aliphatic alcohols, such as glycerol and erythritol, polymethylols such as trimethylolpropane, alkanolamines such as triethanolamine and relatively low molecular weight alkylene oxide adducts such as propylene-glycerol adducts and the like. Especially effective diecuttable foam formulations are provided by further employing, as co-additives, certain alkylene oxide adducts of linear alcohols or phenols, sulfonated petroleum oils, ammonium salts and silicone-containing copolymers. If desired, the viscosity and compatibility characteristics of the additive and/or additive and co-additive mixture may be modified by the incorporation of a diluent.

Abstract: Cellular and non-cellular polyurethane plastics and semi-hard polyurethane foams which are prepared by the use of novel Mannich bases of the general formula ##STR1## and which have improved strength and tear resistance are disclosed herein.

Abstract: This invention relates to a process for preparing polysiloxane-polyoxyalkylene block copolymerizates at whose polysiloxane block are laterally bonded at least two polyoxyalkylene blocks, and which contain at least two structural units having the formula ##STR1## WHEREIN R.sup.1 is an alkylene group, R.sup.2 is a monovalent hydrocarbon group and/or a trialkylsilyloxy group, OR.sup.6 is a polyoxyalkylene block derived from an alcohol R.sup.6 OH, and p = 1 or 2, which comprises adding onto polysiloxanes with SiH groups silanes having the formula ##STR2## WHEREIN R.sup.3 is an alkenyl group and X a halogen or an alkoxy group, and reacting this intermediate product with a polyoxyalkylene monool. The invention also relates to novel compounds produced by the process.

Abstract: The formation of high-resilience polyurethane foam is provided by the use, as the foam-stabilizing component, of a particular class of sulfolanyloxyalkyl-polyalkylsiloxanes which consist essentially of: (1) monofunctional siloxy units (M.degree.) the respective silicon atoms of which have two alkyls bonded thereto, the third silicon-bonded organic group being alkyl or sulfolanyloxyalkyl; (2) an average of from about 0.5 to about 10 moles of difunctional dialkylsiloxy units for every two moles of M.degree.; and (3) from 0 up to an average of about 10 moles, for every two moles of M.degree., of difunctional monoalkylsiloxy units in which the second organic group bonded to silicon is sulfolanyloxyalkyl, provided an average of at least about 0.5 and no more than about 10 moles of sulfolanyloxyalkyl groups are present in the sulfolanyloxyalkyl-polyalkylsiloxanes for every two moles of M.degree..

Abstract: The formation of polyurethane foam including flame-retarded foam is provided employing, as the surfactant component of the foam formulation, a particular class of sulfolanyloxyalkyl-substituted polysiloxane-polyoxyalkylene polymers. The polymers comprise chemically combined monofunctional siloxy units (M.sub.o) and difunctional siloxy units (D.sub.o) and, for every two moles of M.sub.o, an average of from about 2 to about 100 silicon-bonded sulfolanyloxyalkyl groups (Q) and an average of from about 2 to about 30 silicon-bonded polyoxyalkylene blocks (E). The M.sub.o units have at least two alkyls bonded to the respective silicon atoms thereof and the D.sub.o units have at least one alkyl bonded to the respective silicon atoms thereof, the remaining group bonded to silicon of said M.sub.o and D.sub.o units being alkyl, Q or E.

Abstract: A rigid polyurethane foam composition characterized by containing 5 to 20% by weight of hollow-spherical Silas balloons having a particle size of 100 to 300 .mu.(based on the total weight of the polyol and isocyanate components of the polyurethane foam) and 0.2 to 2% by weight of an organosilane compound (based on the total weight of the polyol and isocyanate components of the polyurethane foam and said Silas balloons) in the rigid polyurethane foam.