Stahl makes further additions to wet-end product range
Following the recent announcements of the new Corilene sand Synektans, Stahl has released a further group of products consisting of: formaldehyde-free Renektans, two Corilene water repellency boosters, and a new Bemanol multi-purpose wetting/soaking agent – all of which will be available immediately.
The three new retannage resins are guaranteed to be free from formaldehyde residues, have excellent light and heat yellowing fastness and give typical tightening and filling properties.
Both Renektan FFR and FFZ are anionic resins which penetrate easily, exhaust almost completely and have a dispersing effect on vegetable tanning extracts and syntans.
Renektan FFR is the softer of the two polymers and is therefore recommended for leathers where softness, fullness, and tightness is of paramount importance.
Renektan FFZ has further applications in the fixation of chrome and chrome syntans either at the end of tannage or prior to neutralisation in retannage.
Renektan FFC is a cationic product which fills and tightens the grain, while keeping it smooth. It increases affinity and improves the fixation and yield of anionic dyestuffs and exhaustion an anionic retanning agents.
