DANIEL HOWARD SCHMIDT
Pilots at Park Ave, Savannah, GA
License number
Georgia A4899713
Issued Date
Mar 2012
Expiration Date
Mar 2013
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
260 Park Ave APT 1306, Savannah, GA 31322
Professional information
Method For The Production Of Polymer Foams Based On Reactive Polycondensation Resins
US Patent:
2007019, Aug 23, 2007
Filed:
Mar 17, 2005
Appl. No.:
10/593419
Inventors:
Volker Schadler - Strasbourg, FR
Daniel Schmidt - Savannah GA, US
Axel Weiss - Speyer, DE
Daniel Schmidt - Savannah GA, US
Axel Weiss - Speyer, DE
Assignee:
BASF AKTIENGESELLSCHAFT PATENTS, TRADEMARKS AND LICENSES - LUDWIGSHAFEN
International Classification:
C08F 2/00
US Classification:
526088000
Abstract:
Process for producing polymer foams derived from reactive polycondensation resins and having a maximum pore diameter of 1 μm, which comprises: 1) preparing a gelable mixture of the reactive polycondensation resin in a solvent or dispersion medium, 2) preparing an aqueous dispersion comprising polymer particles, 3) mixing the mixture from step 1) with the dispersion from step 2) to give a water-containing gel, and 4) drying the water-containing gel to give the polymer foam, with drying in step 4) being carried out at a pressure and a temperature which are below the critical pressure and below the critical temperature of the liquid phase of the gel and the gel not being brought into contact with an organic liquid to replace the water present in the gel by this liquid after step 3) and before step 4).