Paint stripping method

Details Paint stripping method Paint stripping method

1981-04-06

1983-01-11

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

Including forming a solidified or hardened coating for cleaning

134 38, 252159, 252160, 252DIG8, B08B 308, C09D 900

Patent

active

043680828

ABSTRACT:
Paint is removed from a painted surface by applying to the surface a solution containing an alkali metal hydroxide and a polyacrylate thickening agent having a viscosity which decreases above a predetermined transition pH. The initial pH of the composition is adjusted to just above the transition pH by including a sufficient amount of the hydroxide in the composition so that the composition is readily spreadable. As the pH of the composition falls during use its viscosity increases; thereby becoming more firmly attached to the surface; permitting the composition to remain in contact with the surface for a sufficient time to destroy the adhesion of the paint to the surface.
The thickening agent is a cross-linked carboxylated copolymer of acrylic acid and methacrylate.

REFERENCES:
patent: 2447052 (1948-08-01), Bond et al.
patent: 3355385 (1967-11-01), Mackley
patent: 3615825 (1971-10-01), Gansser
patent: 4285827 (1981-08-01), Wyatt

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