公开(公告)号：AU2701297A

公开(公告)日：1997-11-19

申请号：AU2701297

申请日：1997-04-24

Applicant: BASF AG

Inventor： MOLL ULRICH ,  DECKERS ANDREAS ,  KINGMA AREND JOUKE ,  WEBER WILHELM

IPC: C08F2/00 ,  C08F4/44 ,  C08F4/46 ,  C08F4/50 ,  C08F4/622 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/68 ,  C08F10/02 ,  C08F110/02

Abstract: A process is disclosed for preparing ethylene polymers with a molecular weight Mw (weight average) lower than 20,000 g/mole at temperatures in a range from 200 to 280 DEG C and pressures in a range from 1000 to 3500 bars in the presence of a catalyst system. The catalyst system used contains: (A) a non-bridged substituted or unsubstituted biscyclopentadienyl complex; (B) a metal compound of general formula (I) M (R )r (R )s (R )t, in which M is an alkaline, an alkaline earth metal or a metal of the third main group of the periodic table; R is hydrogen, C1-C10-alkyl, C6-C15-aryl, alkylaryl or arylalkyl with 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; R and R independently represent hydrogen, halogen, C1-C10-alkyl, C6-C15-aryl, alkylaryl, arylalkyl or alkoxy with 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; r is an integer from 1 to 3; and s and t are integers from 0 to 2, the sum r+s+t corresponding to the valency of M ; and (C) a metallocene ion-forming compound selected in a group which consists of strong, neutral Lewis acids, ionic compounds with lewis acid cations and ionic compounds with Brönsted acids as cations. Components (A), (B) and (C) are mixed together and after at the latest 5 minutes are dosed in the reactor.

公开(公告)号：CA2253256A1

公开(公告)日：1997-11-06

申请号：CA2253256

申请日：1997-04-24

Applicant: BASF AG

Inventor： KINGMA AREND JOUKE ,  WEBER WILHELM ,  MOLL ULRICH ,  DECKERS ANDREAS

IPC: C08F2/00 ,  C08F4/44 ,  C08F4/46 ,  C08F4/50 ,  C08F4/622 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/68 ,  C08F10/02 ,  C08F110/02 ,  C08L91/06 ,  C08F4/62

Abstract: A process is disclosed for preparing ethylene polymers with a molecular weight Mw (weight average) lower than 20,000 g/mole at temperatures in a range from 200 to 280 ~C and pressures in a range from 1000 to 3500 bars in the presence of a catalyst system. The catalyst system used contains: (A) a non-bridged substituted or unsubstituted biscyclopentadienyl complex; (B) a metal compound of general formula (I) M1 (R1)r (R2)s (R3)t, in which M1 is an alkaline, an alkaline earth metal or a metal of the third main group of the periodic table; R1 is hydrogen, C1-C10-alkyl, C6-C15-aryl, alkylaryl or arylalkyl with 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; R2 and R3 independently represent hydrogen, halogen, C1-C10-alkyl, C6-C15-aryl, alkylaryl, arylalkyl or alkoxy with 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; r is an integer from 1 to 3; and s and t are integers from 0 to 2, the sum r+s+t corresponding to the valency of M1; and (C) a metallocene ion-forming compound selected in a group which consists of strong, neutral Lewis acids, ionic compounds with lewis acid cations and ionic compounds with Brönsted acids as cations. Components (A), (B) and (C) are mixed together and after at the latest 5 minutes are dosed in the reactor.

公开(公告)号：FI88215C

公开(公告)日：1993-04-13

申请号：FI870768

申请日：1987-02-23

Applicant: BASF AG

Inventor： HOFFMANN GERHARD ,  HOFMANN REINER ,  LAUKE HARALD ,  WEBER WILHELM ,  LEYRER REINHOLD J

IPC: G03C1/00 ,  C08F2/50 ,  G03C1/72 ,  G03F7/004 ,  G03F7/028 ,  G03F7/031

公开(公告)号：FI88215B

公开(公告)日：1992-12-31

申请号：FI870768

申请日：1987-02-23

Applicant: BASF AG

Inventor： HOFFMANN GERHARD ,  HOFMANN REINER ,  LAUKE HARALD ,  WEBER WILHELM ,  LEYRER REINHOLD J

IPC: G03C1/00 ,  C08F2/50 ,  G03C1/72 ,  G03F7/004 ,  G03F7/028 ,  G03F7/031

公开(公告)号：ES2190116T5

公开(公告)日：2005-07-01

申请号：ES98954254

申请日：1998-09-05

Applicant: BASF AG

Inventor： DECKERS ANDREAS ,  WEBER WILHELM ,  ANNEN ULRICH

IPC: C08L23/08 ,  C08F2/00 ,  C08F2/02 ,  C08F210/02 ,  C08F218/04 ,  C08J3/22 ,  C09D17/00

Abstract: Procedimiento para la copolimerización de etileno con ésteres vinílicos y, si se desea, otros comonómeros vinílicos en un reactor tubular a presiones de 500 hasta 4000 bar y a temperaturas de un máximo de 220ºC, caracterizado porque se inicia la polimerización por medio de radicales en al menos dos lugares del reactor tubular por adición de un catalizador/iniciador y se ajusta el perfil de temperatura en el reactor de tal manera, que las máximas de temperatura se sitúan detrás de los lugares de iniciación entre 180 y 220ºC y se diferencian en menos de 10ºC.

公开(公告)号：AT247137T

公开(公告)日：2003-08-15

申请号：AT00929482

申请日：2000-05-03

Applicant: BASF AG

Inventor： DECKERS ANDREAS ,  WEBER WILHELM

IPC: F16H55/06 ,  C08F2/00 ,  C08F2/01 ,  C08F2/02 ,  C08F210/02 ,  C08L23/08 ,  C08L77/00 ,  C08F220/10 ,  C08F220/06

Abstract: Copolymers of ethylene have from 1 to 30 mol % of alkyl(meth)acrylates and, if desired, other comonomers, and have a residual comonomer content of less than 0.5% by weight in the copolymer. A process for preparing copolymers of this type in a combination of stirred autoclave and tubular reactor is described, as is the use of the copolymers for preparing polyamide molding compositions.

公开(公告)号：AT245210T

公开(公告)日：2003-08-15

申请号：AT99965554

申请日：1999-12-24

Applicant: BASF AG

Inventor： HUEFFER STEPHAN ,  DECKERS ANDREAS ,  WEBER WILHELM ,  KLIMESCH ROGER ,  LITTMANN DIETER ,  STURM JUERGEN ,  LERCH GOETZ

IPC: C08F2/01 ,  C08F10/00 ,  C23C18/16 ,  C23C18/31 ,  C23C18/34 ,  C23C18/36 ,  C23C18/40 ,  C23C18/48 ,  C23C18/50 ,  C23C18/52 ,  F28F19/02 ,  F28F19/06

Abstract: The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.

公开(公告)号：DE59806830D1

公开(公告)日：2003-02-06

申请号：DE59806830

申请日：1998-09-05

Applicant: BASF AG

Inventor： DECKERS ANDREAS ,  WEBER WILHELM ,  ANNEN ULRICH

IPC: C08L23/08 ,  C08F2/00 ,  C08F2/02 ,  C08F210/02 ,  C08F218/04 ,  C08J3/22 ,  C09D17/00

Abstract: A process is described for copolymerizing ethylene with vinyl esters and, if desired, with further vinylic comonomers in a tube reactor at pressures of from 500 to 4000 bar and at not more than 220° C., which comprises initiating the free-radical polymerization at at least two locations of the tube reactor by adding a catalyst/initiator and adjusting the temperature profile within the reactor such that the temperature maxima downstream of the initiation locations are from 150 to 220° C. and differ by less than ±10° C. from one another.

公开(公告)号：AT230420T

公开(公告)日：2003-01-15

申请号：AT98954254

申请日：1998-09-05

Applicant: BASF AG

Inventor： DECKERS ANDREAS ,  WEBER WILHELM ,  ANNEN ULRICH

IPC: C08L23/08 ,  C08F2/00 ,  C08F2/02 ,  C08F210/02 ,  C08F218/04 ,  C08J3/22 ,  C09D17/00

Abstract: A process is described for copolymerizing ethylene with vinyl esters and, if desired, with further vinylic comonomers in a tube reactor at pressures of from 500 to 4000 bar and at not more than 220° C., which comprises initiating the free-radical polymerization at at least two locations of the tube reactor by adding a catalyst/initiator and adjusting the temperature profile within the reactor such that the temperature maxima downstream of the initiation locations are from 150 to 220° C. and differ by less than ±10° C. from one another.

公开(公告)号：ES2175173T3

公开(公告)日：2002-11-16

申请号：ES96943987

申请日：1996-12-17

Applicant: BASF AG

Inventor： HAMMER KLAUS ,  WEBER WILHELM

IPC: G01K1/08 ,  G01K1/18 ,  G01K7/02

Abstract: The temperature measurement probe consists of a probe member with a bore hole containing a thermocouple or a resistance thermometer, with its thermally sensitive tip extending out of the front. The front section of the probe member (1) has an annular gap (10) between it and the bore (2). The probe is preferably used for temperature measurements in high pressure polyethylene plants.