公开(公告)号：WO1995025604A1

公开(公告)日：1995-09-28

申请号：PCT/SE1995000307

申请日：1995-03-23

Applicant: POLYSACCHARIDE INDUSTRIES AB PSI ,  SVENSSON, Sigfrid

Inventor： POLYSACCHARIDE INDUSTRIES AB PSI

IPC: B05D05/00

CPC classification number: C09D105/00 ,  B05D5/00 ,  C09D5/008 ,  C09D103/02 ,  Y10T428/31844 ,  C08L2666/02

Abstract: A process for protecting a surface from non-desired contamination and for facilitating removal of said contamination from said surface, characterized by the steps: a) preparing a solution of polysaccharides containing at least two components, wherein one component is constituted by a first polysaccharide which, when precipitated from a solution by evaporation of the solvent thereof, directly forms a film, and wherein the second component is constituted by a second polysaccharide which, when precipitated from a solution by evaporation of the solvent thereof, forms a film via at least partial gel formation, or by interaction with said first polysaccharide, said films being redissolvable or swellable; b) applying the solution from step a) onto said surface before subjected to contamination; c) allowing the applied solution to dry so as to form a solid film on said surface via at least partial gel formation; d) treating the film-coated surface with a liquid capable of redissolving film or provided swelling thereof; and e) removing the non-desired contamination by complete or partial removal of the film from the surface.

Abstract translation: 一种用于保护表面免受不需要的污染并便于从所述表面去除所述污染物的方法，其特征在于以下步骤：a）制备含有至少两种组分的多糖溶液，其中一种组分由第一种多糖组成， 当通过其溶剂的蒸发从溶液中沉淀出来时，直接形成膜，并且其中第二组分由第二多糖构成，当通过其溶剂的蒸发从溶液中沉淀出来时，其通过至少部分地形成膜 凝胶形成，或通过与所述第一多糖的相互作用，所述膜可再溶解或溶胀; b）在进行污染之前将来自步骤a）的溶液施加到所述表面上; c）使所施加的溶液干燥，以便通过至少部分凝胶形成在所述表面上形成固体膜; d）用能够再溶解膜或提供溶胀的液体处理薄膜包衣表面; 以及e）通过从表面完全或部分去除膜而去除不希望的污染物。