公开(公告)号：US3813375A

公开(公告)日：1974-05-28

申请号：US23095872

申请日：1972-03-01

Applicant: BASF AG

Inventor： GIERTH V ,  ZEITLER G ,  KLOCKE H ,  STOCKBURGER D

IPC: C08J3/14 ,  C08F3/04 ,  C08F1/92

CPC classification number: C08J3/14 ,  C08J2323/04

Abstract: METHOD OF MAKING POWDERS FROM ETHYLENE POLYMERS BY DISSOLVING THE ETHYLENE POLYMERS AT A TEMPERATURE ABOVE 60*C. IN A FLUORINATED CHLOROHYDROCARBON HAVING FROM 1 TO 4 CARBON STOMS AND 0 TO 2 HYDROGEN ATOMS, COOLING THE SOLUTION TO A TEMPERATURE BELOW 60*C. OR EVAPORATING THE SOLVENT AND COLLECTING THE PULVERIZED ETHYLENE POLYMERS.

公开(公告)号：US3736305A

公开(公告)日：1973-05-29

申请号：US3736305D

申请日：1968-12-19

Applicant: BASF AG

Inventor： KINKEL K ,  PFANNMUELLER H ,  SCHMIDT THOMEE G ,  MIETZNER F ,  GIERTH V

IPC: C08F10/00 ,  C08F15/40

CPC classification number: C08F10/00 ,  C08F4/28

Abstract: PRODUCTION OF COPOLYMERS OF ETHYLENE WHICH CONTAIN POLYMERIZED UNITS OF (1) MAJOR AMOUNTS OF ETHYLENE, (2) MINOR AMOUNTS OF C3 TO C12 ALKENECARBOXYLIC ACIDS, (3) MINOR AMOUNTS OF C3 TO C8 ALKENES, AND, IF DESIRED, (41) MINOR AMOUNTS OF ESTERS OF C3 TO C12 ALKENE CARBOXYLIC ACIDS WITH C3 TO C8 SECONDARY OF CONVENTIONAL ALKANOLS AND/OR (4**2) MINOR AMOUNTS OF CONVENTIONAL OTHER MONOMERS WHICH ARE COPOLYMERIZABLE WITH ETHYLENE.

公开(公告)号：US3714135A

公开(公告)日：1973-01-30

申请号：US3714135D

申请日：1970-09-16

Applicant: BASF AG

Inventor： PFANNMUELLER H ,  URBAN F ,  GROPPER H ,  GIERTH V

IPC: C08F10/00 ,  C08F1/60 ,  C08F15/02

CPC classification number: C08F10/00 ,  C08F4/28

Abstract: Production of homopolymers or copolymers of ethylene by homopolymerization of ethylene or copolymerization of mixtures of ethylene and other monomers at superatmospheric pressure and elevated temperature under the influence of a free radical generating polymerization initiator with or without a polymerization regulator. The initiator used is a mixture of (a) an initiator having a halflife of ten to 30 hours at 50* C and (b) an initiator having a halflife of 0.2 to 10 hours at 50*C, the halflife at 50*C of initiator (a) being at least twice as long as that of initiator (b). Polymers having a high molecular weight and a low degree of branching are obtained in a fairly high yield.

Abstract translation: 通过乙烯均聚或乙烯与其它单体的混合物在超大气压和升高的温度下共聚制备乙烯的均聚物或共聚物，在具有或不具有聚合调节剂的自由基产生聚合引发剂的影响下。 使用的引发剂是（a）在50℃下半衰期为10至30小时的引发剂和（b）在50℃下半衰期为0.2至10小时的引发剂的混合物，50℃下的半衰期为 引发剂（a）是起始物（b）的至少两倍。 以相当高的产率获得具有高分子量和低支化度的聚合物。