| 9605106 |
Polyester polyols made of isophthalic acid and/or terephthalic acid and oligoalkyl oxides |
Hartmut Nefzger, Johannes Van De Braak, Jürgen Schlossmacher, Silvia Kasperek |
2017-03-28 |
| 9328196 |
Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups |
Hartmut Nefzger, Jörg Hofmann, Bert Klesczewski, Klaus Lorenz |
2016-05-03 |
| 9193822 |
Process for producing polyester polyols having secondary OH end groups |
Hartmut Nefzger, Jörg Hofmann, Klaus Lorenz, Bert Klesczewski |
2015-11-24 |
| 9139685 |
Process for the preparation of a polyurethane polymer with secondary hydroxyl end groups comprising polyester polyols |
Hartmut Nefzger, Jörg Hofmann, Bert Klesczewski, Klaus Lorenz |
2015-09-22 |
| 9029495 |
Process for producing polyether polyols having primary hydroxyl end groups |
Hartmut Nefzger, Jörg Hofmann, Klaus Lorenz, Norbert Hahn |
2015-05-12 |
| 8697830 |
Aliphatic, sinterable, thermoplastic polyurethane molding compositions with improved blooming behavior |
Henricus Peerlings, Wolfgang Kaufhold, Hartmut Nefzger, Markus Broich |
2014-04-15 |
| 8592623 |
Method for producing polyester polyols having low amounts of dioxane waste |
Rolf Roers, Hartmut Nefzger, Johannes Van De Braak, Torsten Heinemann, Jürgen Schloβmacher |
2013-11-26 |
| 8481606 |
Process for the production of polyester polyols with low volumes of dioxane waste |
Hartmut Nefzger, Johannes Van De Braak, Jürgen Schloβmacher |
2013-07-09 |
| 8334035 |
Polyester polyols from terephthalic acid and oligoalkylene oxides |
Hartmut Nefzger, Uwe Kuenzel, Jürgen Schloβmacher, Lutz Brassat |
2012-12-18 |
| 8110704 |
Process for the production of stable polymers |
James-Michael Barnes, Hartmut Nefzger, Stefan Penninger, Thomas W. Schultz, Heinrich Lutz +2 more |
2012-02-07 |
| 7893150 |
Polymer dispersions in polyester polyols |
Hartmut Nefzger, Erhard Michaels |
2011-02-22 |
| 7772321 |
Polymer dispersions in polyester polyols |
Hartmut Nefzger, Erhard Michels |
2010-08-10 |
| 7763683 |
Polyester polyols, a process for the production thereof and the use thereof |
Hartmut Nefzger, Gerhard Klein, Manfred Schmidt, Jens Krause, James-Michael Barnes |
2010-07-27 |
| 6977290 |
Process for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and prepolymers thereof |
Hartmut Nefzger, Manfred Schmidt, Hans-Dieter Ruprecht, James-Michael Barnes |
2005-12-20 |
| 6541411 |
Titanium/zirconium catalysts and their use to prepare esters or polyesters |
Andreas Hoffmann, Hartmut Nefzger |
2003-04-01 |