Composition for stripping coatings from substrates

Details Composition for stripping coatings from substrates Composition for stripping coatings from substrates

2006-12-19

2006-12-19

Mruk, Brian P (Department: 1751)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

For cleaning a specific substrate or removing a specific...

C510S174000, C510S200000, C510S201000, C510S207000, C510S209000, C510S213000, C510S238000, C510S239000, C510S240000, C510S252000, C510S271000, C510S272000, C510S421000, C510S432000

Reexamination Certificate

active

07151080

ABSTRACT:
A composition for stripping and cleaning organic coatings from substrates, comprising a solution of high-boiling alcohols, preferably polyglycols, a surfactant, preferably a nonylphenol ethoxylate, and an alkali metal hydroxide, said composition being essentially free of any amines. The composition aggressively and effectively strips paints and other organic coatings without harming underlying substrates damaged by prior art strippers, over conventional or lower time periods, and at conventional or lower temperatures. One embodiment of the invention comprises from about 40% to about 98.9% by weight of a high-boiling alcohol; from about 1% to about 60% of a non-ionic surfactant; and from about 0.1% to about 10% of an alkali hydroxide or mixture of alkali hydroxide.

REFERENCES:
patent: 3790489 (1974-02-01), Shoemaker et al.
patent: 3954648 (1976-05-01), Belcak et al.
patent: 4978469 (1990-12-01), Seaman, Jr.
patent: 5894854 (1999-04-01), Miles
patent: 6855210 (2005-02-01), Dostie et al.
patent: 2003/0144164 (2003-07-01), Pilznienski et al.

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