Process and apparatus for the production of a polyurethane binder
AssigneeSika Technology AG
InventorsSusanne Pedersen, David Murray
Life of this patent
Estimating the term…
Abstract
Process for the production of a polyurethane binder comprising the steps of mixing at the site of use a mixture of an alcohol component and an isocyanate component in a predetermined weight ratio with a catalyst in an amount determined by the desired open time of the binder. Apparatus for the preparation of a polyurethane binder comprising means for dosing an alcohol and an isocyanate component in a predetermined weight ratio to form a mixture means for dosing varying amounts of catalyst to said mixture and means for mixing the dosed components.
Claims14
1-11. (canceled)
A process for the production of a polyurethane binder from a mixture of an alcohol component, an isocyanate component and a catalyst, CHARACTERIZED in that the alcohol and isocyanate components in a predetermined weight ratio are mixed at the site of use with a catalyst in an amount which is determined by the desired open time of the binder.
A process for the production of a polyurethane binder from a prepolymer, which is prepared from a mixture of a alcohol component and a isocyanate components in a predetermined weight ratio, and a catalyst, CHARACTERIZED in that the prepolymer is mixed at the site of use with a catalyst in an amount which is determined by the desired open time of the binder.
An apparatus for the preparation of a binder comprising a mixture of an alcohol component, an isocyanate component and a catalyst, CHARACTERIZED in that it comprises means for dosing the alcohol and isocyanate components, in a predetermined weight ratio, means for dosing varying amounts of catalyst and means for mixing the dosed components.
Dependencies are inferred from the claim text.