公开(公告)号：EP1581690A1

公开(公告)日：2005-10-05

申请号：EP03814568.6

申请日：2003-06-27

申请人： DOW GLOBAL TECHNOLOGIES INC.

发明人： MOBLEY, Larry, W. ,  SUBRAMANIAN, Ramki ,  SKAGGS, Kenneth, W. ,  ZHOU, Weijun ,  BHATTACHARJEE, Debkumar ,  MOORE, Roger

IPC分类号： D06N3/14 ,  D06N3/00

CPC分类号： D06N3/14 ,  D06N3/0052 ,  Y10T442/20

摘要： A synthetic leather is made by impregnating or coating a non-woven or woven textile with an aqueous polyurethane dispersion comprised of a nonionizable polyurethane and an external stabilizing surfactant. The impregnated textile is then exposed to water containing a coagulant for a coagulation time sufficient to coagulate the dispersion. The coated textile is heated to from a poromeric layer. The method may be used to form a synthetic leather having excellent wet ply adhesion and may contain an insoluble multivalent cation salt of an organic acid.

公开(公告)号：EP1572771A1

公开(公告)日：2005-09-14

申请号：EP03783756.4

申请日：2003-11-24

申请人： DOW GLOBAL TECHNOLOGIES INC.

发明人： BHATTACHARJEE, Debkumar ,  ERDEM, Bedri ,  PARKS, Franklin, E. ,  SKAGGS, Kenneth, W. ,  WANG, Kuan, J.

IPC分类号： C08G18/08 ,  C08G18/48 ,  C09D175/04 ,  C08G18/12

CPC分类号： C08G18/6674 ,  C08G18/12 ,  C08G18/2815 ,  C08G18/4202 ,  C08G18/4808 ,  C08G18/482 ,  C08G18/3246

摘要： A polyurethane dispersion containing the reaction product of a polyurethane prepolymer and water are shear, shelf, temperature, pH and electrolyte stable. The amount of the reaction product in the dispersion may be as high as 60 weight percent. The prepolymer may be the reaction product of a polyisocyanate and a hydrophilic alkylene oxide polyol or polyamine having a molecular weight of between 800 and 1,500 and an active-hydrogen containing material, such as a polyol, and optionally, a surfactant. The hydrophilic alkylene oxide polyol or polyamine is present in an amount sufficient to reduce the interfacial tension of the prepolymer to less than or equal to 10dynes/cm. The amount of ethylene oxide in the prepolymer is between from 5.0 to 5.5 weight percent. The water solubility of the high molecular weight active-hydrogen containing material typically less than 10.0 g per 100 g of water. The dispersion produced from the prepolymer has high solids content and excellent shear and shelf stability. Solvent free dispersions of such polyurethanes may be prepared from a continuous HIPR procedure.

公开(公告)号：EP1169368B1

公开(公告)日：2003-03-19

申请号：EP00906009.6

申请日：2000-02-07

申请人： Dow Global Technologies Inc.

发明人： SKAGGS, Kenneth, W. ,  LOUKS, Paul, T. ,  TABOR, Rick, L. ,  WILLKOMM, Wayne, R.

IPC分类号： C08G18/08 ,  C08G18/10

CPC分类号： C08J3/03 ,  C08G18/0866 ,  C08G18/12 ,  C08G18/283 ,  C08J2375/00 ,  C08G18/3246