The hard glue you describe would almost certainly be a polyurethane. Gorilla Glue might be the closest you can get. Selleys' Urethane Bond used to be similar but they changed it...
Satin and matt - from the Dulon mixing guide:
Matt: 100 parts colour/clearcoat, 75 parts flattener
Low Gloss: 100 parts colour/clearcoat, 60 parts flattener
Semi Gloss: 100 parts colour/clearcoat, 40 parts flattener
Or you can wing it and mix in unperfumed plain talc to your colour or clearcoat...
Satin and matt - from the Dulon mixing guide:
Matt: 100 parts colour/clearcoat, 75 parts flattener
Low Gloss: 100 parts colour/clearcoat, 60 parts flattener
Semi Gloss: 100 parts colour/clearcoat, 40 parts flattener
Or you can wing it and mix in unperfumed plain talc to your colour or clearcoat...