Abstract:
A multilayer composition for packaging comprising a first polymer film, a second film, at least one print layer between the films and a 1 K isocyanate prepolymer adhesive layer between the at least one print layer and one of the films, where the print layer contains a hyperbranched polyester binder containing functional groups selected from the group consisting of —OH, —COOH and —COOR, where R is methyl, ethyl, vinyl, isopropyl, n-propyl, n-butyl, isobutyl, sec-butyl or tert-butyl provides packaging laminates with excellent adhesion. The hyperbranched polyester is for example a polymer of trimethyolpropane and hexahydrophthalic anhydride and optionally a cycloaliphatic diol.
Abstract:
The invention relates to a method for producing at least one resin, comprising the mixing of at least one polyisocyanate with at least one polyepoxide, wherein the reaction occurs in the presence of a catalyst system based on at least one metal-free Lewis base having at least one nitrogen atom. The invention further relates to resins that can be obtained in accordance with a method according to the invention and to the use of a resin that can be obtained in accordance with a method according to the invention or of a resin according to the invention to produce seals, to produce components for rotor blades, boat hulls, or vehicle body parts, or for coatings.
Abstract:
The present invention relates to a method for producing polyurethane shoe soles having a molded-part density of 100 to 350 g/L, wherein (a) organic polyisocyanates, (b) polyols, (c) propellants containing water, optionally (d) chain extenders and/or cross-linking agents, (e) catalysts, and (f) other auxiliary agents and/or additives are used, wherein in a first step polyisocyanate (a), polyol (b), and optionally chain extenders and/or cross-linking agents (d) are mixed and reacted at a temperature of 110 °C to 180 °C to form a prepolymer comprising polyisocyanate groups, and in a second step the resulting isocyanate-terminated prepolymer and possibly remaining polyisocyanate (a) are mixed with possibly remaining polyol (b), propellants containing water (c), possibly remaining chain extenders and/or cross-linking agents (d), optionally present catalysts (e), and other auxiliary agents and/or additives (f), introduced into a mold, and allowed to fully cure to form a polyurethane shoe sole.
Abstract:
The present invention relates to a method for producing polyurethane molded foam bodies having a molding part density of not more than 500g/L, wherein (a) organic polyisocyanates are mixed with (b) polyesteroles, (c) expanding agents, (d) cell-opening additives, selected from the group consisting of homo- or copolymers on the basis of ethylhexylacrylate, polybutadiene, polyisobutene and diorganosilicones or mixtures of two or more of these defoamers, (e) silicone-based cell stabilizers and, optionally, (f) chain lengthening agents and/or cross-linking agents, (g) catalysts and (h) other auxiliary agents and/or additives, to form a reaction mixture, are introduced in a mold and allowed to fully cure to form a polyurethane molded foam body. The present invention further relates to polyurethane molded bodies obtained by such a method and to the use of said molded bodies as a shoe sole, steering wheel, seat or armrest.
Abstract:
The present invention relates to a process for producing a shoe sole comprising a hybrid material made of a polyurethane foam as matrix material and of foamed particles of thermoplastic polyurethane by preparing an inlay of joined expanded particles (c″) of thermoplastic polyurethane and placing the joined expanded particles of thermoplastic polyurethane in a mould and embedding the inlay with a reaction mixture obtainable by mixing (a) polyisocyanates with (b) compounds having hydrogen atoms reactive toward isocyanates, and if appropriate, with (d) chain extenders and/or crosslinking agents, and with (e) catalysts, and with (f) blowing agents, and with (g) further additives and reacting the reaction mixture to give the shoe sole. The present invention further relates to shoe soles, obtainable by such a process.
Abstract:
The invention relates to a method for producing polyurethane integral foam materials having a density of 100 to 800 g/L, wherein: a) a solution containing polyisocyanate and thermoplastic polymer is mixed with b) polyols, c) foaming agents, and optionally d) chain extender and/or cross-linking agents, e) catalysts, and f) other auxiliary agents and/or additives, mixed to form a reaction mixture, introduced in a mold, and allowed to fully cure to form a polyurethane molded foam body. The invention further relates to a polyurethane integral foam material, which can be obtained by such a method.
Abstract:
The present invention relates to a process for preparing a polyurethane moulding with a density of from 150 to 350 g/l, in which a) polyisocyanate prepolymers obtainable from a polyisocyanate component (a-1), polyol (a-2), comprising polypropylene oxide, and chain extenders (a-3), b) polyetherpolyols with a functionality of greater than 2.0, c) polymer polyetherpolyols, d) chain extenders, e) catalysts, f) blowing agents comprising water, and optionally g) other assistants and/or additives are mixed to give a reaction mixture and hardened in a mould to give the polyurethane moulding. The present invention further relates to polyurethane mouldings obtainable by a process according to the invention, and to shoe soles comprising inventive polyurethane mouldings.