公开(公告)号：US3891603A

公开(公告)日：1975-06-24

申请号：US42909073

申请日：1973-12-28

Applicant: BASF AG

Inventor： HEIL EDUARD ,  KUCHNER KARL ,  SLIWKA WOLFGANG ,  SMITS HARALD

IPC: B01J19/00 ,  C08F10/00 ,  C08F1/11 ,  C08F1/98

CPC classification number: B01J19/0013 ,  B01J2219/00103 ,  B01J2219/00108 ,  C08F10/00 ,  C08F4/28

Abstract: Copolymers of ethylene with 10 to 98 percent by weight of conventional comonomers are made by copolymerization in aqueous dispersion, at least a part of the heat of polymerization being removed by evaporation of the ethylene. The vapors are cooled by a cooling medium by heat exchange, in a cooling zone situated above the polymerization vessel and communicating with the latter, the hot vapors being fed to the upper end of the cooling zone, the cooled vapors returning to the polymerization vessel, so that the vapors are cooled by the cooling medium while they are flowing downward.

Abstract translation: 通过在水分散体中共聚制备乙烯与10至98重量％的常规共聚单体的共聚物，通过乙烯蒸发除去至少一部分聚合热。 蒸汽通过热交换由冷却介质冷却，在位于聚合容器上方的冷却区中并与其连通，热蒸汽被供给到冷却区的上端，冷却的蒸气返回聚合容器， 使得蒸汽在冷却介质向下流动时被冷却。