Process for steam coagulation finishing of polymers
A process for steam coagulation finishing of (co)polymers containing at least one block of predominantly conjugated diene and at least one block of predominantly monovinyl aromatic in the presence of polyvinyl alcohol having a weight average molecular weight in the range of from 200 to 200,000 as di...
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Zusammenfassung: | A process for steam coagulation finishing of (co)polymers containing at least one block of predominantly conjugated diene and at least one block of predominantly monovinyl aromatic in the presence of polyvinyl alcohol having a weight average molecular weight in the range of from 200 to 200,000 as dispersant by coagulation of a cement of the (co)polymers, characterized in that said cement is mixed with steam of a pressure in the range of from 3 to 12 bara and a temperature in the range of from 120 to 200 degrees C in a contactor and that the mixture so obtained is led to a coagulator, operated at a temperature in the range of from 90 to 120 degrees C and at a pressure of from 1.0 to 2.5 bara. |
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