Patent application number | Description | Published |
20080207791 | Process for producing polyurethane flexible foamed materials having low bulk density - Mechanically compressible polyurethane foamed materials with low bulk density are produced by reacting a polyol component satisfying specified compositional requirements with an isocyanate component that includes a modified toluene diisocyanate. The polyurethane foamed materials produced are useful as acoustic and thermal insulation. | 08-28-2008 |
20100305228 | PROCESS FOR PRODUCTION OF FLEXIBLE POLYURETHANE FOAMS WITH LOW EMISSION - The present invention provides a process for the production of polyurethane foams from
| 12-02-2010 |
20120108690 | METHOD FOR PRODUCING FLAME-RETARDANT POLYURETHANE FOAM MATERIALS HAVING GOOD LONG-TERM USE PROPERTIES - The subject-matter of the present invention relates to a process for the production of flame-retardant polyurethane foams, preferably for the production of flame-retardant flexible polyurethane foams, from
| 05-03-2012 |
20120116114 | PROCESS FOR PRODUCING POLYESTER POLYOLS HAVING SECONDARY OH END GROUPS - The invention relates to a process for producing polyester polyols with secondary hydroxyl end groups, including the step of the reaction of a polyester including carboxyl end groups with an epoxide of the general formula (1): | 05-10-2012 |
20120123008 | PROCESS FOR THE PREPARATION OF A POLYURETHANE POLYMER WITH SECONDARY HYDROXYL END GROUPS COMPRISING POLYESTER POLYOLS - The invention relates to a process for the preparation of a polyurethane polymer, comprising the step of reaction of | 05-17-2012 |
20130261205 | PROCESS FOR THE PREPARATION OF POLYRICINOLEIC ACID ESTER POLYOLS HAVING PRIMARY HYDROXYL END GROUPS - The present invention relates to a process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups. It furthermore relates to polyricinoleic acid ester polyols obtainable according to the invention and polyurethane polymers prepared using these polyols. The process comprises the steps: a) polycondensation of ricinoleic acid until a hydroxyl number of >0 mg of KOH/g to <60 mg of KOH/g is reached; and b) reaction of the product obtained in step a) or of a secondary product of the product obtained in step a) comprising carboxyl groups with an epoxide of the general formula (I), wherein R1 represents hydrogen, an alkyl radical or an aryl radical, with the proviso that >80% by weight to <100% by weight, based on the total amount of the epoxide (I) employed, is ethylene oxide and the reaction is carried out in the presence of an amine as the catalyst. | 10-03-2013 |
20130345330 | METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAMS - A process for the preparation of polyricinoleic acid esters comprising the step of reaction of ricinoleic acid with an alcohol component which comprises mono- and/or polyfunctional alcohols having a molecular weight of ≧32 g/mol to ≦40 g/mol, wherein the reaction is carried out at least partly in the presence of a catalyst. The amount of catalyst, based on the total weight of the ricinoleic acid and the alcohol component, is in a range of from ≧10 ppm to ≦100 ppm. The reaction is ended when the acid number of the reaction product obtained is ≧5 mg of KOH/g to ≦100 mg of KOH/g. The invention furthermore relates to a polyurethane polymer, in particular a flexible polyurethane foam, which is obtainable using these polyricinoleic acid esters. | 12-26-2013 |
20140066535 | METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAM MATERIALS - The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) is used which comprises polyether carbonate polyol, and to the isocyanate component itself. The invention also provides an NCO-terminated, urethane group-comprising prepolymer obtainable by reaction of one or more polyisocyanates (B1) with one or more polyether carbonate polyols. | 03-06-2014 |
20140107245 | PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS - The invention relates to a method for producing polyether carbonate polyols, wherein (i) in a first step a polyether carbonate polyol is produced from one or more H-functional starter substances, one or more alkylene oxides, and carbon dioxide in the presence of at least one DMC catalyst, and (ii) in a second step the polyether carbonate polyol is chain-extended with a mixture of at least two different alkylene oxides in the presence of at least one DMC catalyst. The invention further relates to polyether carbonate polyols that contain a terminal mixed block of at least two alkylene oxides and to a method for producing soft polyurethane foams, wherein a polyol component containing a polyether carbonate polyol according to the invention is used. | 04-17-2014 |
20140329985 | METHOD FOR PRODUCING POLYETHER ESTER POLYOLS - The present invention provides a process for producing polyether ester polyols on the basis of renewable raw materials, the polyether ester polyols produced by the process according to the invention, the use thereof for the purpose of producing polyurethanes, and also polyurethanes containing the polyether ester polyols according to the invention | 11-06-2014 |