公开(公告)号：US06254644B1

公开(公告)日：2001-07-03

申请号：US09367992

申请日：1999-08-23

申请人： Harro Träubel ,  Hanns-Peter Müller ,  Helmut Reiff ,  Jürgen Reiners ,  Gerd-Friedrich Renner ,  Rainhard Koch ,  Karl Pisaric

发明人： Harro Träubel ,  Hanns-Peter Müller ,  Helmut Reiff ,  Jürgen Reiners ,  Gerd-Friedrich Renner ,  Rainhard Koch ,  Karl Pisaric

IPC分类号： C14C300

CPC分类号： C14C3/28 ,  C08G18/8083 ,  C08G2230/00 ,  C14C3/08 ,  C14C3/18 ,  C14C9/00 ,  C14C11/003

摘要： The present invention relates to a process for preparing leather by (I) tanning a pelt with (a) an aldehyde, or (b) a bisulphite-blocked polyisocyanate; (II) optionally, retanning the pelt with (a) a polyaspartic acid, a salt of a polyaspartic acid, a polyaspartic acid anhydride, or a mixture thereof, and/or (b) a polyaspartamide; (III) dressing the resultant product by (a) bottoming the product with a polyurethane and one or more natural bottoming assistants, and (b) applying a polyurethane and/or polyesteramide finish; and (IV) optionally, aftertreating the resultant dressed leather with a leather preservative.

摘要翻译： 本发明涉及通过（I）用（a）醛或（b）亚硫酸氢盐封端的多异氰酸酯鞣制皮肤来制备皮革的方法;（II）任选地，用（a）聚天冬氨酸， 聚天冬氨酸的盐，聚天冬氨酸酐或其混合物，和/或（b）聚天冬氨酰胺;（III）通过（a）用聚氨酯和一种或多种天然底层助剂底部产品来调整所得产物 ，和（b）施加聚氨酯和/或聚酯酰胺表面; 和（IV）任选地，用皮革防腐剂后处理所形成的穿着皮革。