Assertion: acetaldehyde | /r/HasProperty | the improvement
Facets:
Source sentences:
text: In a process for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger with acetaldehyde at a temperature not higher than about 50 C. and separating the paraldehyde from the resulting eflluent mixture.
text: In a process for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger with acetaldehyde at a temperature below its boiling point.
text: In a process for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger with acetaldehyde at a temperature below its boiling point, withdrawing from said exchanger bed a mixture comprising paraldehyde and acetaldehyde and recycling said mixture to produce a composition consisting largely of paraldehyde.
text: In a process for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger with acetaldehyde at a temperature below its boiling point and thereafter withdrawing a mixture containing paraldehyde.
text: In a process, for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger comprising essentially a sulfonated condensation product of an aldehyde and a hydroxy aromatic compound with acetaldehyde at a temperature below its boiling point and there- :fytgr withdrawing a mixture containing paralde- 6.
text: In a process for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger comprising essentially a sulfonated phenol-formaldehyde resin with acetaldehyde at a temperature below its boiling point and thereafter withdrawing a mixture containing paraldehyde.
text: In a process for the preparation of paraldehyde from acetaldehyde, the improvement which comprises contacting a fixed bed of an acidic cation exchanger comprising essentially a sulfonated coal with acetaldehyde at a temperature below its boiling point and thereafter withdrawing below its boiling point, withdrawing from said resin a mixture comprising acetaidehyde and ,paraidehyde, and repeating the aforesaid operation until the mixture 80 removed consists largeiy of paraldehyde.