초록 ▼

The present invention is directed to an agitator-free mixing head and a method for agitator-free production of a reaction mixture from an isocyanate and a higher-viscous polyol formulation, wherein both constituents are fed to a mixing zone and mixed with each other therein, whereby a polyol formula

The present invention is directed to an agitator-free mixing head and a method for agitator-free production of a reaction mixture from an isocyanate and a higher-viscous polyol formulation, wherein both constituents are fed to a mixing zone and mixed with each other therein, whereby a polyol formulation with a viscosity of at least 3000 mPa.s is fed at low pressure into the mixing zone and at least two flows of low-viscosity constituents (isocyanate and optionally low-viscous polyol) are injected into the flow of high-viscous polyol formulation at high pressure.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for producing a reaction mixture without a stirring apparatus comprising the steps of:a) feeding at least two low viscosity components and a high viscosity polyol to a mixing zone, wherein said high viscosity polyol has a viscosity of at least 3000 mPa.s;b) mi

[ What is claimed is:] [1.]1. A process for producing a reaction mixture without a stirring apparatus comprising the steps of:a) feeding at least two low viscosity components and a high viscosity polyol to a mixing zone, wherein said high viscosity polyol has a viscosity of at least 3000 mPa.s;b) mixing said at least two low viscosity components and said high viscosity polyol in the mixing zone, wherein one of said at least two low viscosity components is an isocyanate; said high viscosity polyol is fed into the mixing zone at a low pressure and said at least two low viscosity components are injected at high pressure into the stream of said high viscosity polyol rein the cross-sectional area of said high viscosity polyol stream is 10 to 100 times greater than the sum of the cross-sectional areas of said at least two low viscosity components.