EP 1597307 A2 20051123 - HYDROPHILIC ESTER POLYURETHANE FOAMS
Title (en)
HYDROPHILIC ESTER POLYURETHANE FOAMS
Title (de)
HYDROPHILE ESTER-POLYURETHANSCHÄUME
Title (fr)
MOUSSES EN POLYURETHANNE D'ESTER HYDROPHILE
Publication
Application
Priority
- US 0341032 W 20031223
- US 43527702 P 20021223
Abstract (en)
[origin: WO2004058864A2] An ester polyurethane foam is prepared by reacting a mixture of one or more polyester polyols with one or more isocyanates and one or more silicone surfactants in the presence of a blowing agent, such as water, and other additives, such as catalysts. The cured foam is chemically treated in a caustic solution and is then felted (compressed under heat and pressure) to form a hydrophilic ester polyurethane foam having a water absorption rate of at least 30 pounds of water per square foot per minute (1.44 kPa/min). The foam also has greater water holding capacity and wet strength than cellulose.
IPC 1-7
IPC 8 full level
B29C 44/56 (2006.01); C08G 18/42 (2006.01); C08J 9/38 (2006.01)
CPC (source: EP)
B29C 44/5636 (2013.01); C08G 18/4238 (2013.01); C08J 9/38 (2013.01); C08G 2110/0008 (2021.01); C08G 2110/005 (2021.01); C08G 2110/0083 (2021.01); C08J 2375/04 (2013.01)
Citation (search report)
See references of WO 2004058864A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004058864 A2 20040715; WO 2004058864 A3 20040930; AU 2003300298 A1 20040722; AU 2003300298 A8 20040722; EP 1597307 A2 20051123; JP 2006511654 A 20060406; JP 4589730 B2 20101201
DOCDB simple family (application)
US 0341032 W 20031223; AU 2003300298 A 20031223; EP 03814339 A 20031223; JP 2004563979 A 20031223