Harry Bloomfield wrote:
No, I no longer have the empty tube to help identify it. It is on a
painted surface, very well adhered and I need to remove it. Gentle
scrapping gets the thick off, but not the entire thickness. Is there any
solution which will loosen it please?

In case no-one else has any suggestions, I find that those Benzyl
Alcohol paint strippers soften up things like that - even when you might
not want them to :-) I've used them on acrylic sealers when nothing
else seems to work, but it also seems to soften up some of those
ready-mixed plaster repair fillers, which can be annoying; but at least
I know to be careful with it now. TBH, it's the only sort of stripper
I'll buy from now on, since it's the only thing I ever found that works
on emulsion, too. Takes hours to work, though. And it's supposed to be
non-toxic (at least it is ATM) and it is low-vapour. Costs about £30
for a big plastic bottle, so might not be economic for a small job, but
if you will be stripping paint in the future...