Patent attributes
A remover composition containing 1,3-propanediamine (a), 1-hydroxyethylidene-1, 1-diphosphonic acid (b) and water, wherein the remover composition contains the component (a) in an amount of from 0.2 to 30% by weight, the component (b) in an amount of from 0.05 to 10% by weight, and the water in an amount of from 60 to 99.75% by weight, and wherein the composition has a pH at 20° C. of from 9 to 13; and a remover composition containing an organic amine (A), an organic phosphonic acid (B), a linear sugar alcohol (C) and water, wherein the remover composition contains the component (A) in an amount of from 0.2 to 30% by weight, the component (B) in an amount of from 0.05 to 10% by weight, the component (C) in an amount of from 0.1 to 10% by weight, and the water in an amount of from 50 to 99.65% by weight, and wherein the composition has a pH at 20° C. of from 9 to 13.
