Water-based paint-removing solution
AssigneeHenkel Kommandirgesellschaft auf Aktien
InventorNeil R. Wilson
Life of this patent
Estimating the term…
Abstract
Paint residues may be removed from spraying equipment and the like by flushing with aqueous compositions containing alkoxylated aromatic alcohols wherein the aromatic ring moieties of such alcohols do not bear any alkyl substituent containing more than 4 carbon atoms. Preferably, the aqueous compositions also contain an alkanolamine or other base. The alkoxylated aromatic alcohols contain an average of at least about 2 oxyalkylene moieties (preferably, oxyethylene moieties) per molecule.
Claims19
A composition useful for removing paint from a non-water-soluble surface comprising:
- a) water;
- b) a water-soluble alkoxylated aromatic alcohol containing at least two oxyalkylene moieties per molecule and an aromatic ring moiety in each molecule which does not bear any alkyl substituent having more than 4 atoms;
- and
- c) a water-soluble base comprised of:
- 1) an alkanolamine and
- 2) an alkali metal silicate in an amount of about 0.001 to about 0.1 weight percent of the composition.
The composition of 1 wherein said composition comprises from about 0.5 to about 30 weight percent of said water-soluble alkoxylated aromatic alcohol.
A composition useful for removing paint from a non-water-soluble surface comprising:
- a) water;
- b) water-soluble ethoxylated aromatic alcohol selected from the group consisting of ethoxylated phenols, ethoxylated benzyl alcohols, and mixtures thereof, wherein said ethoxylated aromatic alcohol contains an aromatic ring moiety and an average of from about 3 to about 10 oxyethylene moieties per molecule, but does not contain any alkyl substituent on said aromatic ring moiety having more than 2 carbons;
- and
- c) water-soluble alkanolamine in an amount sufficient to provide a pH of 8-14.
A composition useful for removing paint from a non-water-soluble surface comprising;
- a) water;
- b) from about 1.0 to about 20 weight percent of water-soluble alkoxylated aromatic alcohol selected from the group consisting of ethoxylated unsubstituted phenols, ethoxylated unsubstituted benzyl alcohols, and mixtures thereof, wherein said ethoxylated aromatic alcohol contains an average of from about 3 to about 10 oxyethylene moieties per molecule;
- c) from about 0.1 to about 2 weight percent of water-soluble alkanolamine;
- wherein (b) and (c) are present In said composition in a weight ratio of from about4:1 to about20:1.
A composition useful for removing paint from a non-water-soluble surface comprising:
- a) water;
- b) a water-soluble alkoxylated aromatic alcohol containing an average of from about 3 to about 10 oxyalkylene moieties per molecule and an aromatic ring moiety in each molecule which does not bear any alkyl substituent having more than 4 atoms;
- and
- c) about 10 to about 20 weight percent water-soluble alkanolamine.
A composition useful for removing paint from a non-water-soluble surface comprising:
- a) water;
- b) a water-soluble alkoxylated benzyl alcohol containing at feast two oxyalkylene moieties per molecule and an aromatic ring moiety in each molecule which does not bear any alkyl substituent having more than 4 atoms;
- and
- c) a water-soluble base comprised of an alkanolamine in an amount sufficient to provide a pH of 8-14.
Dependencies are inferred from the claim text.