| 摘要 |
PURPOSE:To develop the metal surface detergent having an excellent effect of degreasing and rust inhibiting of metal surfaces without eroding the base of the metals at the time of use by adding and mixing specific acids and chelate agent to and with an aq. soln. of specific polysaccharides. CONSTITUTION:The liquid prepd. by mixing the inorg. acids. such as hydrochloric acid, sulfuric acid and phosphoric acid or org. acids such as oxalic acid and sulfamic acid, in the form of an aq. soln. of 5 to 15% at 5 to 30 pts.wt. in terms of pure content per 1 pt. wt. polysaccharides to the aq. soln. of the polysaccharides consisting of beta-1, 3-glucan produced by microorganisms belonging to the genus Auerovacidium, and the chelate agents, such as 1, 2-cyclohexane diamnie tetraacetic acid, in the form of an aq. soln. of 0.1 to 5%, at >=10 pts.wt. ratio in terms of pure content thereto is used as the detergent for the surfaces of the metals, such as Fe, Cu, Al, brass and stainless steel. The detergent which has the excellent property to degrease the metal surfaces without eroding the metal base and has the excellent effect of inhibiting the rust of the metals even without applying grease and rust preventive oil thereto is thus obtd. |
