Treatment and after-treatment of metal with carbohydrate-modified polyphenol compounds
申请人:HENKEL CORPORATION (a Delaware corp.)
公开号:EP0319017A2
公开(公告)日:1989-06-07
A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. Novel derivatives of polyphenol compounds useful in the treatment of the surface of metal articles is provided. Novel surface treatment solutions or dispersions, and methods for using these solutions is provided. Carbohydrate-modified polyphenol compounds are utilized in the present invention. The molecular weight of the polyphenols used in the preparation of derivatives of the present invention are in the range of about 360 to about 30,000 or greater. The resulting derivatives will typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
一种金属处理溶液,含有有效量的可溶性或分散性化合物,它是一种多酚的衍生物。提供了可用于金属制品表面处理的新型多酚化合物衍生物。提供了新型表面处理溶液或分散体,以及使用这些溶液的方法。本发明采用了碳水化合物改性的多酚化合物。用于制备本发明衍生物的多酚的分子量在约 360 至约 30,000 或更大的范围内。所得衍生物的分子量通常高达约 2,000,000 ,分子量在约 700 至约 70,000 范围内为优选。