| abstract |
PCT No. PCT/US95/01371 Sec. 371 Date Aug. 2, 1996 Sec. 102(e) Date Aug. 2, 1996 PCT Filed Feb. 1, 1995 PCT Pub. No. WO95/21232 PCT Pub. Date Aug. 10, 1995Limescale removing compositions contain a low level of surfactant, i.e., less than about 1% and maleic acid and have a pH of from about 0.1 to about 4.5. The surfactant can be anionic, nonionic, amphoteric, or cationic, but is preferably cationic. The composition can be used neat, or diluted, by applying it to the surface to be treated, leaving it to react, and then rinsing. |