公开(公告)号：US3903203A

公开(公告)日：1975-09-02

申请号：US40428373

申请日：1973-11-05

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG ,  PFANNMUELLER HELMUT ,  URBAN FRIEDRICH ,  BUECHNER OSKAR ,  FAUTH KARL-HEINZ ,  GIERTH VOLKER ,  PFLEGER KLAUS

IPC: C08L23/04 ,  C08F19/18 ,  C08F37/18

CPC classification number: C08L23/0869 ,  C08L25/06 ,  C08L25/12 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2666/02

Abstract: Film having improved transparency prepared from a mixture of an ethylene polymer and from 0.05 to 1.0 percent by weight (based on the mixture) of a copolymer of styrene, a graft copolymer of styrene, a homopolymer of propylene or a copolymer of propylene and ethylene; the film may be used as packaging material.

Abstract translation: 由乙烯聚合物的混合物制备的具有改善的透明性的薄膜和苯乙烯共聚物，苯乙烯的接枝共聚物，丙烯的均聚物或丙烯与乙烯的共聚物的共聚物的0.05-1.0重量％（基于混合物） 该膜可以用作包装材料。

公开(公告)号：US3691145A

公开(公告)日：1972-09-12

申请号：US3691145D

申请日：1970-08-06

Applicant: BASF AG

Inventor： GIERTH VOLKER ,  GROPPER HANS ,  MIETZNER FRANC GEORG ,  URBAN FRIEDRICH

IPC: C08F4/34 ,  C08F10/00 ,  C08F1/60 ,  C08F3/04

CPC classification number: C08F10/00 ,  C08F4/28

Abstract: Production of polyethylene by polymerizing ethylene at elevated temperatures and elevated pressure under the action of a polymerization initiator, consisting of oxygen and t-butyl hydroperoxide, and of a polymerization regulator. The process of the invention is characterized in that temperature ranging from 310* to 400*C are used and that the polymerization initiator consists of from 1 to 12 molar parts of oxygen and from 1 to 5 molar parts of t-butyl hydroperoxide per million molar parts of the ethylene being polymerized. The process of the invention is preferably carried out continuously in a tubular reactor. The process permits easy control of the reaction with high yields and provides products with high flexibility and elongation.

Abstract translation: 在聚合引发剂，由氧和叔丁基过氧化氢组成的聚合引发剂和聚合调节剂的作用下，在升高的温度和升高的压力下聚合乙烯生产聚乙烯。 本发明的方法的特征在于使用310至400℃的温度，聚合引发剂由1至12摩尔份氧和1至5摩尔份叔丁基过氧化氢每百万摩尔 部分乙烯被聚合。 本发明的方法优选在管式反应器中连续进行。 该方法允许以高产率容易地控制反应，并提供具有高柔性和伸长率的产品。

公开(公告)号：US3664988A

公开(公告)日：1972-05-23

申请号：US3664988D

申请日：1969-12-05

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG ,  PFANNMUELLER HELMUT ,  GROPPER HANS ,  GIERTH VOLKER ,  BECK GILBERT

IPC: C08F10/00 ,  C08F16/00 ,  C08F15/00 ,  C08F15/40

CPC classification number: C08F16/00 ,  C08F10/00 ,  C08F4/28

Abstract: A process for the production of ethylene copolymers containing hydroxyl groups which contain polymerized units of ethylene, an alkenol and if desired other monomers copolymerizable with ethylene, by copolymerization of a mixture of ethylene, alkenol and the other copolymerizable monomer(s), if any, at superatmospheric pressure and elevated temperature under the action of a free-radical polymerization initiator in the presence or absence of a polymerization regulator. 3-methyl-3-buten-1-ol is used as the alkenol. The process has the advantage that it is more easily carried out than comparable prior art methods and that it gives copolymers containing a relatively high proportion of polymerized units of alkenol.

公开(公告)号：CA1090044A

公开(公告)日：1980-11-18

申请号：CA302716

申请日：1978-05-05

Applicant: BASF AG

Inventor： BUECHNER OSKAR ,  GIERTH VOLKER

IPC: C08F6/00 ,  C08F2/34 ,  C08F6/04 ,  C08F6/06 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F212/02 ,  C08F6/28

Abstract: A process for the continuous high pressure polymerization Or ethylene in a polymerization system which comprises a polymerization zone (A) a high pressure product isolation zone (B), a throttling and control system (C), a low pressure product isolation zone (D), a second throttling and control system (E) and a discharge extruder (F), and wherein, according to the invention, the level Or the ethylene polymer in the high pressure product isolation zone (B) and in the low pressure product isolation zone (D) is carried periodically. The process gives an ethylene polymer Or improved homogeneity, which when used to manufacture films does not tend to form specks or fisheyes.