Detergent composition comprising alkali metal hydroxide and methods of modifying a surface

摘要

An alkaline detergent is described which includes the use of polycarboxylic acid copolymers or salts thereof in combination with alkali metal hydroxide. The detergent composition reduces spotting and filming and prevents hard water scale accumulation between 145-180 degrees Fahrenheit and with a pH of 10.5 to about 13.

主权项

1. A detergent composition comprising:
about 100 ppm to about 22,000 ppm of an alkali metal hydroxide; about 1 ppm to about 1500 ppm of a nonionic surfactant; and about 10 ppm to about 6,000 ppm of at least one polycarboxylic acid copolymer or salt thereof with the following structure wherein:
a.) The molecular weight is from about 1,000 to 50,000 g/molb.) The ratio of m:n is 1:50 to 2:5R1 is a phosphino (i) or phosphono (ii) end group with the following structuresthe phosphino or phosphono end group comprises from about 0.1 wt % to about 12 wt % of the polycarboxylic acid copolymer, wherein the detergent composition is substantially free of alkali metal silicates.