公开(公告)号：US3847791A

公开(公告)日：1974-11-12

申请号：US35428473

申请日：1973-04-25

Applicant: TEXACO AG

Inventor： KUNERT M ,  SANDHACK L

IPC: C10G73/26 ,  C07C1/00 ,  C07C7/152 ,  C07C9/14 ,  C07C67/00 ,  C10G73/24 ,  C10G43/04

CPC classification number: C10G73/24 ,  C07C7/152 ,  C07C9/00

Abstract: In a urea dewaxing process, a powdery adduct, capable of being effectively separated by centrifuging, is formed at a temperature range of from about 20* to 40* C. if particular oil solvent mixtures are employed. Useful solvent mixtures are a C5-C6 hydrocarbon such as isopentane, hexane or benzene plus a higher boiling organic compound such as methylisobutylketone.

Abstract translation: 在尿素脱蜡方法中，如果使用特定的油溶剂混合物，则在约20℃至40℃的温度范围内形成能够通过离心有效分离的粉状加合物。 有用的溶剂混合物是C5-C6烃如异戊烷，己烷或苯加上沸点高的有机化合物如甲基异丁基酮。

公开(公告)号：US3835025A

公开(公告)日：1974-09-10

申请号：US35428373

申请日：1973-04-25

Applicant: TEXACO AG

Inventor： KUNERT M ,  SANDHACK L

IPC: C10G73/26 ,  B01D17/00 ,  C07C20060101 ,  C07C1/00 ,  C07C7/152 ,  C07C9/00 ,  C07C9/14 ,  C07C67/00 ,  C08L91/06 ,  C10G20060101 ,  C10G21/12 ,  C10G21/20 ,  C10G25/00 ,  C10G29/20 ,  C10G29/22 ,  C10G73/24 ,  C07B21/00 ,  C10G43/04

CPC classification number: C10G73/24

Abstract: HIGH PURITY N-PARAFFINS ARE PRODUCED IN A UREA DEWAXING PROCESS INCORPORATING A REPULPING STEP WHEREIN THE REPULPING OF A POWDERY ADDUCT IS CONDUCTED AT A TEMPERATURE ABOVE THE ADDUCT FORMING TEMPERATURE BUT BELOW THE ADDUCT DECOMPOSITION TEMPERATURE FOLLOWED BY COOLING THE MIXTURE TO THE ADDUCT FORMING TEMPERATURE.