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US 5,308,642 AGranted
Process for the production of stiffening materials containing hydraulic binders, in particular plaster bandages
AssigneeBayer Aktiengesellschaft
InventorsWulf von Bonin, Ulrich von Gizycki
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Abstract
An ecologically harmless process for the production of stiffening materials containing hydraulic binders, for example plaster bandages, is characterized in that a hydraulic binder is mixed in pulverulent form with a reactive binder, this mixture is applied to a sheet-like material, the sheet-like material thus coated is rolled up and the setting reaction of the reactive binder is allowed to proceed before, during and/or after the rolling-up.
Claims3
A process for the production of stiffening materials containing hydraulic binders, in which:
- a hydraulic binder is mixed in pulverulent form with a reactive binder, said reactive binder being a combination of one or more polyols and one or more polyisocyanates;
- this mixture is applied to a flexible substrate;
- and
- the reactive binder is then reacted to bind the hydraulic binder, in an unreacted state, to the flexible substrate whereby, when subsequently exposed to water, the water can penetrate the reacted binder to react and wet the hydraulic bind, and can cause the hydraulic binder to set and form a stiff material.
1 more element
Dependencies are inferred from the claim text.