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US 5,317,043 AGranted
Process for the recovery of polymers dissolvable in aqueous alkaline or acid media
AssigneeBelland AG
InventorMichael Gass
Life of this patent
Estimating the term…
Abstract
Process for the recovery of polymers by dissolving in an aqueous alkaline or acid medium and precipitating in a strong, turbulent, aqueous flow with subsequent ripening of the precipitated particles in a laminar flow.
Claims18
A process for the recovery of polymers dissolvable in at least one of the group consisting of aqueous alkaline and acid media, comprising the steps of dissolving the polymers and precipitating with acid or alkaline precipitation reagents, the precipitation being carried out in a strong aqueous flow and the precipitated particles ripening substantially separate from one another.
Dependencies are inferred from the claim text.