Patent ID: 6387189
Filing Date: 2002-05-14
Classification: B01D,C11D

Abstract:
A method of cleaning a surface made of at least one material selected from the group consisting of glass, graphite, ceramics, polymeric materials, metallic materials, and fibers by detaching or dissolving organic soilings, inorganic soilings or a mixture of the two present on said surface by a flushing>operation with a solution consisting of either i), ii) and iv); or i), ii), iii) and iv); wherein i), ii), iii) and iv) are as shown below:i) an ininodisuccinic acid of the formula (I) â€ƒin which R1, R2, R3 and R4 independently of one another are H, Li, Na, K, NH4, H3NCH2CH2OH, H2N(CH2CH2OH)2 or HN(CH2CH2OH)3, R5 and R6 independently of one another are H or OH, and R7 is H, CH2CH2OH, CH2CH2CH2OH, CH2CH(OH)CH3, CH2COOR8 or CH2CH2COOR8, where R8 is H, Li, Na, K, NH4, H3NCH2CH2OH, H2N(CH2CH2OH)2 or HN(CH2CH2OH)3, ii) a polyamino acid, iii) an emulsifier, iv) water.