公开(公告)号：DE19741097A1

公开(公告)日：1999-03-25

申请号：DE19741097

申请日：1997-09-18

Applicant: BASF AG

Inventor： DECKERS ANDREAS DR ,  WEBER WILHELM DR ,  ANNEN ULRICH DR

IPC: C08L23/08 ,  C08F2/00 ,  C08F2/02 ,  C08F210/02 ,  C08F218/04 ,  C08J3/22 ,  C09D17/00 ,  C08L29/00 ,  C08L31/00

Abstract: Copolymerization of ethylene with vinyl esters involves initiating polymerization at least two positions in a pipe reactor with the temperature maxima being 150-220 deg C and less than \!10 deg C difference between the two. Copolymerization of ethylene with vinyl esters and optionally further vinyl comonomers comprises initiating polymerization by adding a catalyst/initiator at least two positions in a pipe reactor at 500-4000 bar and at most 220 deg C with the temperature maxima being 150-220 deg C and less than \!10 deg C difference between the two. Independent claims are included for the obtained copolymer and pigment concentrates containing the copolymer.

公开(公告)号：ES2110808T3

公开(公告)日：1998-02-16

申请号：ES95116070

申请日：1995-10-12

Applicant: BASF AG

Inventor： DECKERS ANDREAS DR ,  BERGER ALBIN DR ,  HOFMANN JURGEN ,  KLIMESCH ROGER DR ,  FARWERCK KARL-PETER ,  OHLIG HILMAR

IPC: A61K8/31 ,  A61Q19/00 ,  B29B15/00 ,  C08F8/50 ,  C08F10/00 ,  C08F10/06 ,  C08F110/06 ,  C08J11/12 ,  C09D7/12 ,  C09D11/12 ,  C09D191/08

Abstract: Thermomechanical degradation of polyolefin(s) is carried out in a twin-screw extruder without the use of any additional degradation appts., at 300-500 degrees C and 1-100 bar over a mean dwell time of 0.5-10 min., during which the pressure is (a)periodically altered by 0.5-30 bar. Low molecular wt. polyolefin waxes prepd. by this method are also claimed.

公开(公告)号：AT161856T

公开(公告)日：1998-01-15

申请号：AT95116070

申请日：1995-10-12

Applicant: BASF AG

Inventor： DECKERS ANDREAS DR ,  BERGER ALBIN DR ,  HOFMANN JUERGEN ,  KLIMESCH ROGER DR ,  FARWERCK KARL-PETER ,  OHLIG HILMAR

IPC: A61K8/31 ,  A61Q19/00 ,  B29B15/00 ,  C08F8/50 ,  C08F10/00 ,  C08F10/06 ,  C08F110/06 ,  C08J11/12 ,  C09D7/12 ,  C09D11/12 ,  C09D191/08

Abstract: Thermomechanical degradation of polyolefin(s) is carried out in a twin-screw extruder without the use of any additional degradation appts., at 300-500 degrees C and 1-100 bar over a mean dwell time of 0.5-10 min., during which the pressure is (a)periodically altered by 0.5-30 bar. Low molecular wt. polyolefin waxes prepd. by this method are also claimed.

公开(公告)号：ES2108509T3

公开(公告)日：1997-12-16

申请号：ES95106773

申请日：1995-05-05

Applicant: BASF AG

Inventor： HENN ROLF DR ,  HAHN KLAUS DR ,  DECKERS ANDREAS DR ,  LOTH WOLFGANG DR ,  BLUMENSTEIN UWE DR ,  SCHWABEN HANS-DIETER DR

IPC: C08J9/16 ,  C08J9/18 ,  C08L7/00 ,  C08L25/02 ,  C08L25/04 ,  C08L53/00

Abstract: Expandable styrene polymers (I) for elastic polystyrene (PS) foam contain: (a) 50-90 wt.% PS and/or styrene copolymer contg. at least 50% styrene; (b) 5-30 wt.% styrene-soluble elastomer(s), (c) 5-20 wt.% styrene-contg. block copolymer(s); (d) 1-15 wt.% (w.r.t. a+b+c) low-boiling blowing agent(s), and opt. (e) conventional additives. In the unfoamed bead polymer, component (b) is present in the form of cellular particles and (c) is in the form of particles with a mean size of 0.2-2 microns in the PS phase. Also claimed are: (1) processes for the prodn. of (I) (see below); (2) elastic PS foam with a density of 15-70 g/l, contg. (a), (b), (c) and (e) in amts. as above; and (3) a process for the prodn. of elastic PS foam by heating (I) at a temp. above the softening pt. in a non-gastight mould so as to expand the particles and weld them together. Pref. (b) are styrene-soluble elastomers with a Tg of below 20 degrees C, pref. polybutadiene. (c) are styrene-butadiene (SB) block copolymers with a styrene content of at least 20 wt.%, pref. S-B diblock copolymers or S-B-S triblock copolymers or mixts. thereof.

公开(公告)号：DE19617229A1

公开(公告)日：1997-11-06

申请号：DE19617229

申请日：1996-04-30

Applicant: BASF AG

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

IPC: C08F2/00 ,  C08F4/44 ,  C08F4/46 ,  C08F4/50 ,  C08F4/622 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/68 ,  C08F10/02 ,  C08F110/02 ,  C08F4/52 ,  C08L23/02 ,  C08L91/06

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：DE59305049D1

公开(公告)日：1997-02-20

申请号：DE59305049

申请日：1993-10-08

Applicant: BASF AG

Inventor： FISCHER WOLFGANG DR ,  DECKERS ANDREAS DR ,  GUENTHERBERG NORBERT DR ,  NIESSNER NORBERT DR

IPC: C08F265/04 ,  C08F265/06 ,  C08F279/02 ,  C08L51/00 ,  C08L51/04 ,  C08L101/00

公开(公告)号：DE59206370D1

公开(公告)日：1996-06-27

申请号：DE59206370

申请日：1992-12-08

Applicant: BASF AG

Inventor： BESECKE SIEGMUND DR ,  DECKERS ANDREAS DR ,  LAUKE HARALD DR

IPC: C08F8/32 ,  C08F8/48

Abstract: The invention relates to a polymer essentially containing units of the formula I in which R and R are hydrogen or methyl, and R is C6-C14-aryl which can be up to trisubstituted by radicals selected from the group consisting of C1-C4-alkyl, C1-C4-alkoxy and halogen, obtainable by reacting a polymer based on C1-C20-alkyl esters selected from the group consisting of methacrylic acid and acrylic acid, with an aromatic amine of the formula II R NH2 II in the presence of an amine having a pKb value of

公开(公告)号：DE59302435D1

公开(公告)日：1996-06-05

申请号：DE59302435

申请日：1993-09-27

Applicant: BASF AG

Inventor： GUENTHERBERG NORBERT DR ,  DECKERS ANDREAS DR ,  TIEFENSEE KRISTIN DR

IPC: C08L25/12 ,  C08L33/00 ,  C08L33/04 ,  C08L33/12 ,  C08L51/00 ,  C08L51/04 ,  C08L51/06 ,  C08L73/00 ,  C08L83/04

公开(公告)号：DE4441822A1

公开(公告)日：1996-05-30

申请号：DE4441822

申请日：1994-11-24

Applicant: BASF AG

Inventor： DECKERS ANDREAS DR ,  LITTMANN DIETER DR ,  KLIMESCH ROGER DR

IPC: C08F210/02

Abstract: In the prepn. of copolymers (I) of 94-99.5 mole-% C2H4 and 0.5-6 mole-% 3-6C alkenoic acid (II) by free radical high pressure polymerisation in a tubular reactor, the monomer mixt. is heated to a temp. not above 100 degrees C before adding the initiator and the max. polymerisation temp. does not exceed 260 degrees C. Also claimed are (I) per se; and adhesion promoters, fibres, films and mouldings contg. (I).

公开(公告)号：AT137511T

公开(公告)日：1996-05-15

申请号：AT93112779

申请日：1993-08-10

Applicant: BASF AG

Inventor： DECKERS ANDREAS DR ,  GUENTHERBERG NORBERT DR

IPC: C08F2/18 ,  C08F20/12

Abstract: Polymers obtainable by suspension polymerisation of from 50 to 100% by weight of at least one compound selected from the group consisting of C1-C18-alkyl esters of acrylic acid and methacrylic acid, and from 0 to 50% by weight of further free-radical-polymerisable monomers, in the presence of a buffer selected from the group consisting of citric acid, alkali metal citrates, alkaline earth metal citrates and ammonium citrates, and a process for the preparation of these polymers, and their use for the production of mouldings.