CONTAMINATION REMOVAL PROCESS

摘要

Undesired contamination is removed from a surface by (a) applying a soln. contg. a polysaccharide and a solvent for it onto the surface before it is contaminated; (b) allowing the soln. to dry to form a solid film on the surface; (c) treating the coated surface with a liq. capable of redissolving the film or swelling it; and (d) removing the contamination by removing the dissolved or swelled surface layer of the film.