公开(公告)号：WO2004061198A1

公开(公告)日：2004-07-22

申请号：PCT/US2003/020084

申请日：2003-06-27

Applicant: DOW GLOBAL TECHNOLOGIES INC. ,  MOBLEY, Larry, W. ,  SUBRAMANIAN, Ramki ,  SKAGGS, Kenneth, W. ,  ZHOU, Weijun ,  BHATTACHARJEE, Debkumar ,  MOORE, Roger

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

IPC: D06N3/14

CPC classification number: D06N3/14 ,  D06N3/0052 ,  Y10T442/20

Abstract: 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.

Abstract translation: 通过用包含不可分解聚氨酯和外部稳定表面活性剂的水性聚氨酯分散体浸渍或涂布无纺布或织造织物制成合成革。 然后将浸渍的纺织品暴露于含有凝结剂的水中，使凝固时间足以使分散体凝结。 将涂覆的织物从多孔体层加热。 该方法可用于形成具有优异的湿层粘合性的合成革，并且可以含有有机酸的不溶性多价阳离子盐。

公开(公告)号：WO2004052956A1

公开(公告)日：2004-06-24

申请号：PCT/US2003/037536

申请日：2003-11-24

Applicant: DOW GLOBAL TECHNOLOGIES INC. ,  BHATTACHARJEE, Debkumar ,  ERDEM, Bedri ,  PARKS, Franklin, E. ,  SKAGGS, Kenneth, W. ,  WANG, Kuan, J.

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

IPC: C08G18/08

CPC classification number: C08G18/6674 ,  C08G18/12 ,  C08G18/2815 ,  C08G18/4202 ,  C08G18/4808 ,  C08G18/482 ,  C08G18/3246

Abstract: 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.

Abstract translation: 含有聚氨酯预聚物和水的反应产物的聚氨酯分散体是剪切，架子，温度，pH和电解质稳定的。 分散体中的反应产物的量可以高达60重量％。 预聚物可以是多异氰酸酯和亲水性烯化氧多元醇或分子量为800至1500的聚胺与含活性氢的材料如多元醇和任选的表面活性剂的反应产物。 亲水性烯化氧多元醇或多胺以足以将预聚物的界面张力降至小于或等于10dynes / cm的量存在。 预聚物中的环氧乙烷的量为5.0-5.5重量％。 高分子量含活性氢的材料的水溶解度通常小于10.0g / 100g水。 由预聚物制备的分散体具有高固含量和优异的剪切和储存稳定性。 这种聚氨酯的无溶剂分散体可以由连续HIPR方法制备。