Aqueous alkaline paint stripper
OwnerHans-Joergen Rehm, Brigitte Speiinventors
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Abstract
Disclosed herein are aqueous alkaline paint stripper compositions which contain one or more organic alcohols, a source of alkali, and at least one ethoxylation and/or propoxylation product of an alcohol bearing an aromatic cyclic substituent with 2 to 15 moles of ethylene oxide and/or propylene oxide. The organic alcohols preferably comprise a mixture of b1) di- or triethylene glycol with b2) one or more alcohols bearing a saturated, unsaturated or aromatic homo- or heterocyclic cyclic substituent, in a weight ratio of b1) to b2) of 1:0.1 to 1:1. The compositions are particularly effective for removing paint or lacquer from metal surfaces with a reduction in processing times and in adverse environmental consequences.
Claims9
Aqueous alkaline paint stripper which contains water, one or more organic alcohols and sources of alkali, characterised in that it contains, in addition, at least one ethoxylation and/or propoxylation product of an alcohol bearing an aromatic cyclic substituent, with 2 to 15 moles of ethylene oxide and/or propylene oxide.
The use of ethoxylation and/or propoxylation products of an alcohol bearing an aromatic cyclic substituent with 2 to 15 moles of ethylene oxide and/or propylene oxide as an additive in aqueous alkaline paint strippers.
Dependencies are inferred from the claim text.