Abstract: A composition, system and method of bonding together two substrates employing a deproteinized, enzyme-treated, natural rubber latex composition as a contact curing adhesive between the substrate surfaces.

Abstract: In a process of preparing a polyisocyanurate foam, which process comprises: reacting a plasticized polyisocyanate in the presence of a trimerization catalyst and an expanding amount of an inert blowing agent to provide a polyisocyanurate foam, the improvement which comprises: carrying out the reaction in the presence of from about four to twenty percent by weight of a surface-active organic silicone compound characterized by an active hydrogen functionality, and having a hydroxyl number of greater than about 30 and an equivalent weight of less than about 2000 and in the presence of a nonvolatile plasticizer to provide a polyisocyanurate foam of improved friability and good flame, heat and stability properties.

Abstract: Highly flame-resistant polyurethane foams of improved friability and reduced brittleness without a corresponding substantial increase in flame-spread or smoke-generation characteristics are prepared by incorporating into a foamable polyurethane composition an amount of a liquid organic carbonate, such as ethylene or propylene carbonate.

Abstract: Polyisocyanurate foamable compositions, polyisocyanurate foams and a process of preparing such foams wherein the foam consists essentially of recurring isocyanurate linkages, the foam exhibiting good friability properties and prepared by reacting a polyisocyanate in the presence of a cocatalyst system comprising a trimer catalytic amount of an alkylaminoalkyl phenol, and an amount of from about 1 to 15% by weight of the dialkylaminoalkyl phenol of a triethylene diamine or homolog thereof.

Abstract: In a process of preparing a polyisocyanurate foam, which process comprises: reacting a polyisocyanate in the presence of a trimerization catalyst and an expanding amount of an inert blowing agent to provide a polyisocyanurate foam, the improvement which comprises: carrying out the reaction in the presence of a plasticizing amount of a nonvolatile liquid carbonate to produce a polyisocyanurate foam having improved friability and dimensional stability properties.

Abstract: A moldable tufted carpet automobile mat, the molded mat and the process of preparing the mat, the moldable automobile mat comprising in combination: a tufted carpet having a tufted face surface and a back surface; a thin layer of a stiff, heat-moldable thermoplastic urethane resin having a thickness of up to about one-eighth of an inch, the layer bonded to the back surface of the carpet to secure the tufts to the carpet; and a thick layer of a flexible, cross-linked, thermoset, elastomeric, urethane resin secured to the stiff thermoplastic urethane resin layer, the elastomeric layer having a thickness from about one-eighth of an inch to about three-eighths of an inch.

Abstract: A single-component foamable latex composition, the method of preparing the composition, and the foams prepared therefrom, which composition comprises a natural or synthetic latex or blends, ammonia, a curing system, a siloxane heat-sensitizing agent, and a zinc dibenzyl dithio carbamate accelerator. The latex composition is capable of being stored for a long period of time without gellation or precure prior to use. The combination of a heat-sensitizing agent and an ammonia-retardant accelerating agent has been found to prevent premature gellation and precure of the latex composition.

Abstract: A one-part foamable latex composition, the method of preparing the composition, and the foams prepared therefrom, which composition comprises a natural or synthetic latex or blends, ammonia, a curing system, and an ammonia-retardant accelerator, such as zinc dibenzyl dithio carbamate accelerator, the latex having a total solids content of from about 55% to 85% by weight. The latex composition is capable of being stored for a long period of time without gellation or precure prior to use, and of being foamed without the addition of other components.