Patent application number | Description | Published |
20090076480 | Active Ingredient-Containing Silicone Elastomers - The invention relates to compositions comprising silicone elastomers and antimicrobially active substances in homogeneous distribution, a process for their production and their use in medical articles. | 03-19-2009 |
20100099788 | PROCESS FOR THE PREPARATION OF POLYETHER ESTER POLYOLS - The present invention relates to a process for the preparation of polyether ester polyols starting from fatty acid esters and starter compounds having Zerewitinoff-active hydrogen atoms, and to their use in the production of solid or foamed polyurethane materials. | 04-22-2010 |
20130183880 | SLIGHTLY MODIFIED PREPOLYMERS AND THEIR USES - An isocyanate-terminated prepolymer C having an NCO content of from ≧26% by mass to ≦31.0% by mass is obtainable from the reaction of an isocyanate composition A having a viscosity at 25° C. of from ≧60 mPas to ≦800 mPas, comprising from ≧25% by mass to ≦60% by mass MDI and from ≧40% by mass to 75% by mass pMDI, wherein the sum of the amounts of those components is ≦100% by mass, with a bifunctional polyester ether polyol B having an OH number of ≧200 mg(KOH)/g and ≦500 mg(KOH)/g, obtained from the reaction of a dicarboxylic acid/dicarboxylic acid derivative with at least one polyol and with an epoxide, wherein the polyester ether polyol B is used in amounts of from ≧1.5% by mass to ≦6.0% by mass, based on the sum of the masses of A and B. The invention further provides a PUR/PIR polymer produced from the prepolymer C, its use and composite elements based thereon. | 07-18-2013 |
20130289152 | METHOD FOR PRODUCING FOAMED MOLDINGS - A method for producing foamed mouldings comprises the steps of providing a mould ( | 10-31-2013 |
20140162006 | WATER-BLOWN PUR/PIR RIGID FOAM MATERIAL THAT CAN BE SPRAYED - The invention relates to a method for producing a water-blown polyurethane/polyisocyanurate rigid foam material that can be sprayed, by reacting a mixture comprising an aromatic polyester polyol, a first, comparatively short-chain aliphatic polyether polyol, a second, comparatively long-chain aliphatic polyether polyol, an isocyanate component, a blowing agent having water at least as a main component, and a catalyst component. The invention further relates to a rigid foam produced according to the method according to the invention, a composite material composed of said rigid foam and a pipe, and to the use of such a composite material for transporting liquid or gaseous media. | 06-12-2014 |
20140213679 | EMULSIONS AND THEIR USE IN THE PRODUCTION OF FOAMS BASED ON ISOCYANATES - The invention relates to stable emulsions for the production of foams based on isocyanates, comprising at least three polyols A1a, A1b and A1c and at least one physical blowing agent T, wherein A1a is a polyether polyol, obtained by the addition of epoxies to starter compounds selected from carbohydrates and difunctional or higher-functional alcohols, A1b is a polyether polyol started on an aromatic amine and A1c is a polyester polyether polyol, obtained by the addition of epoxies to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol. The invention further relates to a method for producing foams by reactions of such emulsions with isocyanates and to the foams obtainable in this way and their use for insulating purposes. | 07-31-2014 |
20140234613 | PROCESS FOR PRODUCING A RIGID POLYURETHANE-ISOCYANURATE FOAM - The invention provides a process for producing rigid polyurethane-polyisocyanurate foams using polyols having a high proportion of secondary hydroxyl end groups. The invention further relates to the rigid polyurethane-polyisocyanurate foams thus obtainable and to the use thereof in the production of composite elements from rigid polyurethane-polyisocyanurate foams and suitable outer layers. The invention further provides the composite elements thus obtainable. | 08-21-2014 |
20140242313 | Insulation Moulding and Method for its Manufacture - A cavity between inner and outer walls of an open-box-shaped mould is filled with a polyurethane reaction mixture, containing an isocyanate and an emulsion of an isocyanate-reactive composition with three polyols and a blowing agent, which is cured to a polyurethane containing polymer. The inner and outer wall are a fixed distance from one another and each wall comprises a bottom and sides. The mixture is fed through an inlet in the bottom of the outer wall. Before filling the cavity, the mould is turned downwards so that the mixture foams upwards, filling the cavity. The three polyols are polyether polyol obtained by adding an epoxy to carbohydrates or difunctional or higher-functional alcohols; polyether polyol obtained by adding an epoxy to an aromatic amine; and polyester polyether polyol obtained by adding an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol. | 08-28-2014 |
20140323605 | STABLE EMULSIONS AND THEIR USE IN THE PRODUCTION OF FOAMS BASED ON ISOCYANATE - The invention relates to stable emulsions for the production of foams based on isocyanate, at least comprising three polyols A1a, A1b and A1c as well as at least one physical blowing agent T, wherein A1a is a polyether polyol obtained by addition of epoxides to starter compounds selected from carbohydrates and di- or higher-functional alcohols, A1b is a polyether polyol started on an aromatic amine, and A1c is a polyester polyol obtained by esterification of a polycarboxylic acid component and a polyalcohol component, wherein the total amount of aromatic dicarboxylic acid derivatives used in the esterification, calculated on the basis of the free aromatic dicarboxylic acids and based on the total mass of polyalcohol component and polycarboxylic acid component, is less than or equal to 48.5% by mass. | 10-30-2014 |
20150051301 | METHOD FOR PRODUCING A HARD POLYURETHANE-POLYISOCYANURATE FOAMED MATERIAL - The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerisation catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterised in that—there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from ≧2.3 to ≦2.9 with a polyol component B2, and—the activator component A comprises water as the blowing agent A3 in an amount of from ≧5 wt. % to ≦50 wt. %,—the isocyanate index in the reaction mixture is in a range of from ≧400 to ≦500, and—the isocyanate content of the prepolymer B is in a range of from ≧21 wt. % to ≦30 wt. %, based on the total mass of the prepolymer B, and—wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of ≦75% is achieved. Rigid foams C so produced have good flame retarding properties while at the same time having good insulating properties and stability properties. The present invention relates further to a rigid polyisocyanurate foam C produced by the process according to the invention, to the use of such a rigid polyisocyanurate foam C in the production of heat-insulating structural components, and to a heat-insulating structural component comprising such a rigid polyurethane-polyisocyanurate foam. | 02-19-2015 |