Thiourea adduction

Claim 1

A METHOD OF SEPARATING BRANCHED CHAIN PARAFFINS FROM STRAIGHT CHAIN PARAFFINS WHICH COMPRISES MIXING (1) A CHARGE HYDROCARBON MIXTURE COMPRISING BRANCHED CHAIN PARAFFINS AND STRAIGHT CHAIN PARAFFINS, (2) THIOUREA, AND (3) FURFURYL ALCOHOL TO PROVIDE A MOLAL RATIO OF THIOUREA: FURFURYL ALCOHOL: CHARGE HYDROCARBON MIXTURE IN THE RANGE OF 1:1:1 TO 25:25:1, HOLDING THE MIXTURE SO FORMED AT AN ADDUCT FORMATION TEMPERATURE NOT EXCEEDING THE BOILING POINT OF THE LOWEST BOILING COMPONENT OF SAID HYDROCARBON MIXTURE AND ABOVE THE FREEZING POINT OF FURFURYL ALCOHOL TO PRODUCE A PARTICLE-FORM SOLID ADDUCT COMPRISING THIOUREA AND BRANCHED CHAIN PARAFFINS, SEPARATING SAID PARTICLE-FORM SOLID ADDUCT FROM LIQUID REACTION MIXTURE, WASHING SAID PARTICLE-FORM SOLID ADDUCT WITH WASH LIQUID COMPRISING FURFURYL ALCOHOL TO OBTAIN WASHED PARTICLE-FORM SOLID ADDUCT HAVING A REDUCED CONTENT OF NON-ADDUCTED HYDROCARBONS, ADMIXING FURFURYL ALCOHOL WITH SAID WASHED PARTICLE-FORM SOLID ADDUCT TO OBTAIN A MIXTURE FOR DECOMPOSING SAID ADDUCT CONSISTING ESSENTIALLY OF PARTICLE-FORM SOLID ADDUCT AND FURFURYL ALCOHOL, HEATING SAID MIXTURE OF SAID PARTICLEFORM SOLID ADDUCT AND SAID FURFURYL ALCOHOL AT A TEMPERATURE BELOW ABOUT 300*F. TO DECOMPOSE SAID PARTICLEFORM SOLID ADDUCT AND TO PRODUCE A MIXTURE COMPRISING FURFURYL ALCOHOL BRANCHED CHAIN PARAFFINS PER SE AND THIOUREA PER SE, SEPARATING BRANCHED CHAIN PARAFFINS FROM SAID MIXTURE AT A TEMPERATURE BELOW ABOUT 300*F. AND ABOVE AN ADDUCT FORMATION TEMPERATURE, AND RECOVERING SAID BRANCHED CHAIN PARAFFINS.

Claim 2

A METHOD OF SEPARATING BRANCHED CHAIN PARAFFINS FROM STRAIGHT CHAIN PARAFFINS WHICH COMPRISES MIXING (1) A CHARGE HYDROCARBON MIXTURE COMPRISING BRANCHED CHAIN PARAFFINS AND STRAIGHT CHAIN PARAFFINS, (2) THIOUREA, AND (3) FURFURYL ALCOHOL TO PROVIDE A MOLAL RATIO OF THIOUREA: FURFURYL ALCOHOL: CHARGE HYDROCARBON MIXTURE IN THE RANGE OF 1:1:1 TO 25:25:1, HOLDING THE MIXTURE SO FORMED AT AN ADDUCT FORMATION TEMPERATURE NOT EXCEEDING THE BOILING POINT OF THE LOWEST BOILING COMPONENT OF SAID HYDROCARBON MIXTURE AND ABOVE THE FREEZING POINT OF FURFURYL ALCOHOL TO PRODUCE A PARTICLE-FORM SOLID ADDUCT COMPRISING THIOUREA AND BRANCHED CHAIN PARAFFINS, SEPARATING SAID PARTICLE-FORM SOLID ADDUCT FROM LIQUID REACTION MIXTURE, WASHING SAID PARTICLE-FORM SOLID ADDUCT WITH WASH LIQUID COMPRISING FURFURYL ALCOHOL TO OBTAIN WASHED PARTICLE-FORM SOLID ADDUCT HAVING A REDUCED CONTENT OF NON-ADDUCTED HYDROCARBONS, ADMIXING FURFURYL ALCOHOL WITH SAID WASHED PARTICLE-FORM SOLID ADDUCT TO OBTAIN A MIXTURE FOR DECOMPOSING SAID ADDUCT CONSISTING ESSENTIALLY OF PARTICLE-FORM SOLID ADDUCT AND FURFURYL ALCOHOL, HEATING SAID MIXTURE OF SAID PARTICLEFORM SOLID ADDUCT AND SAID FURFURYL ALCOHOL AT A TEMPERATURE BELOW ABOUT 300*F. TO DECOMPOSE SAID PARTICLEFORM SOLID ADDUCT AND TO PRODUCE A MIXTURE COMPRISING FURFURYL ALCOHOL BRANCHED CHAIN PARAFFINS PER SE AND THIOUREA PER SE, SEPARATING BRANCHED CHAIN PARAFFINS FROM SAID MIXTURE AT A TEMPERATURE BELOW ABOUT 300*F. AND ABOVE AN ADDUCT FORMATION TEMPERATURE, AND RECOVERING SAID BRANCHED CHAIN PARAFFINS.