公开(公告)号：ID18017A

公开(公告)日：1998-02-19

申请号：ID979727

申请日：1997-08-11

Applicant: BASF AG

Inventor： SCHULER BERNHARD DR ,  AUCHTER GERHARD DR ,  TURK JOHANNES ,  NOORDIJK RIK ,  DOBBELAAR JOHANNES DR ,  BACHER REINHARD DR ,  HUMMER WOLFGANG DR

IPC: C08L33/06 ,  C08F212/00 ,  C08F220/00 ,  C08F220/12 ,  C08F220/18 ,  C09J7/02 ,  C09J7/04 ,  C09J133/06 ,  G09F3/10

Abstract: A polymer which is composed offrom 50 to 99.98% by weight of a C1-C12 alkyl (meth)acrylate a),from 0.02 to 1.8% by weight of a vinyl-aromatic compound b),from 0 to 10% by weight of an ethylenically unsaturated acid or an ethylenically unsaturated acid anhydride c), andfrom 0 to 40% by weight of other monomers d), the percentages by weight being based on the polymer.

公开(公告)号：DE19529599A1

公开(公告)日：1997-02-13

申请号：DE19529599

申请日：1995-08-11

Applicant: BASF AG

Inventor： DOBBELAAR JOHANNES DR

IPC: C08F6/00 ,  C08F6/16 ,  C08F6/10 ,  C08F6/24 ,  C08F210/02 ,  C08F212/08 ,  C08F214/04 ,  C08F218/04 ,  C08F220/18 ,  C08F236/06

Abstract: In this process for preparing an aqueous polymer dispersion, an aqueous dispersion of a polymer that contains at least one chemically bound monomer having at least one ethylenically unsaturated group is prepared in a manner known per se, so that the total content of free, i.e. non chemically bound, monomers that contain at least one ethylenically unsaturated double bond, in the thus prepared aqueous polymer dispersion, lies in a range from > 0 to

公开(公告)号：DE19859249A1

公开(公告)日：1999-06-10

申请号：DE19859249

申请日：1998-12-22

Applicant: BASF AG

Inventor： HEIBEL CLAUDIA DR ,  KREMESKOETTER JENS DR ,  DOBBELAAR JOHANNES DR

IPC: C08F6/00 ,  C08F6/10

Abstract: A process for the reduction in the residual monomer content of aqueous polymer dispersions is carried out by the addition of a radical redox initiator system. A process for the reduction of the non-chemically bound residual content of an aqueous polymer dispersion (I) that contains compounds having ethylenically unsaturated groups (residual monomers), comprises the post treatment of the dispersion (I) with a radical redox initiator system (II). (II) contains (A) an oxidising agent consisting of compounds liberating hydrogen peroxide and compounds of formula (1); and (B) a reducing agent consisting of alpha -hydroxycarboxylic acids containing a hydroxymethine group and corresponding salts. R = H, 1-8C alkyl or 6-12C aryl. The addition of (II) to (I) is such that (i) at least a portion of (B) is added to (I) followed by the simultaneous but spatially separate addition of the remainder of (B) with the total amount of (A); or (ii) at least a portion of (A) is added to (I) followed by the simultaneous but spatially separate addition of the remainder of (A) with the total amount of (B); or (iii) the simultaneous but spatially separate addition of the total amounts of (A) and (B).

公开(公告)号：DE19741188A1

公开(公告)日：1999-03-25

申请号：DE19741188

申请日：1997-09-18

Applicant: BASF AG

Inventor： RUPANER ROBERT DR ,  DOBBELAAR JOHANNES DR

IPC: C08F6/00 ,  C08F6/06

Abstract: Post-polymerisation reduction of the residual monomer content of an aqueous polymer dispersion comprises adding an initiator or an oxidation component of a redox system. The initiator or oxidation component is a long-chain compound which is a surface-active initiator (inisurf) with a hydroperoxide, peroxo or azo group or a surface-active hydroperoxide- or peroxo-group-containing compound.- DETAILED DESCRIPTION - Post-polymerisation reduction of the residual monomer content of an aqueous polymer dispersion obtained by free radical polymerisation of olefinically-unsaturated monomers comprises adding an initiator or an oxidation component of a redox system (together with a reduction component and optionally catalytic metal ions in the latter case), the added initiator or oxidation component being a long-chain compound which is: - (A) a long-chain, surface-active initiator (inisurf) with a hydroperoxide, peroxo or azo group, or - (B) a long-chain, surface-active hydroperoxide- or peroxo-group-containing compound obtained (optionally in situ) by oxidation of optionally modified autooxidizable olefinically-unsaturated fatty acids, fatty acid compounds, fatty alcohols or hydrocarbons.TF - TECHNOLOGY FOCUS - POLYMERS - Preferred materials: Both (A) and (B) contain at least 12C.- The azo group-containing (A) compounds are obtained by coupling a long-chain hydrophobic paraffin residue with an azo compound and the hydroperoxide- or peroxo-group-containing (A) compounds are reaction products of hydroperoxides or H2O2 with cyclic anhydrides of carboxylic or sulfonic acids containing an at least 12C paraffin hydrophobic group.- Typical (A) include reaction products of 1 mol. azobutyric acid diamidine dihydrochloride and 2 mols. tetradecylsulphonyl chloride (EP65136) and the equimolar tetradecylsuccinic anhydride/tert. butyl hydroperoxide reaction products of EP569778.- (B) are obtained by oxidation of autooxidizable fatty-acids or-alcohols which have been adducted with 2-20 mol ethylene oxide and which have also optionally been finally modified by sulfation

公开(公告)号：DE19632203A1

公开(公告)日：1998-02-12

申请号：DE19632203

申请日：1996-08-09

Applicant: BASF AG

Inventor： SCHULER BERNHARD DR ,  AUCHTER GERHARD DR ,  TUERK JOHANNES ,  NOORDIJK RIK ,  DOBBELAAR JOHANNES DR ,  BAECHER REINHARD DR ,  HUEMMER WOLFGANG DR

IPC: C08L33/06 ,  C08F212/00 ,  C08F220/00 ,  C08F220/12 ,  C08F220/18 ,  C09J7/02 ,  C09J7/04 ,  C09J133/06 ,  G09F3/10

Abstract: Polymerizate, made of a) 50-99.98 wt.% of a C1-C12 alkyl(meth)acrylate, b) 0,02-1.8 wt.% of a vinyl aromatic compound, c) 0-10 wt.% of an ethylenically unsaturated acid or an ethylenically unsaturated acid anhydrided and d) 0-40 wt.% of other monomers, wherein the percentages by weight are related to the polymerizate.

公开(公告)号：DE19725861A1

公开(公告)日：1998-01-22

申请号：DE19725861

申请日：1997-06-18

Applicant: BASF AG

Inventor： RUPANER ROBERT DR ,  FERBER AXEL ,  DOBBELAAR JOHANNES DR ,  MEISTER MARTIN DR ,  NAHSTOLL JUERGEN DR

IPC: B08B7/00 ,  D01D4/04 ,  F23G5/027 ,  B01D46/48

Abstract: Thermal cleaning of articles that come into contact with polymer dispersions comprises treatment in a sand fluidised bed at a temperature high enough to pyrolyse and/or vaporise the contaminants produced by the polymer dispersions. Also claimed is the use of a sand fluidised bed for cleaning these articles.

公开(公告)号：DE4416478A1

公开(公告)日：1995-11-16

申请号：DE4416478

申请日：1994-05-10

Applicant: BASF AG

Inventor： GUNESIN BINNUR DR ,  DOBBELAAR JOHANNES DR ,  DITTRICH UWE DR ,  KROBB JOACHIM

IPC: C08F12/04 ,  C08F236/10 ,  C08F297/04 ,  C08F12/00 ,  C08L25/00 ,  C08L25/10 ,  C08J3/18 ,  C08J3/09 ,  C09J125/00 ,  C09J125/10

Abstract: Polymers (I) with a Mn of 300,000 to 10 million, obtd. by anionic polymerisation, contain (a) 10-100 wt.% vinylaromatic units, (b) 0-90 wt.% units of an aliphatic diene with two conjugated double bonds, and (c) 0-30 wt.% other unsatd. monomer units. Also claimed are dispersions of (I) in aliphatic hydrocarbon. Also claimed are plastisols contg. (I) or dispersions of (I) and a plasticiser (pref.5-300 wt.% w.r.t. I), pref. also contg. fillers or pigments.

公开(公告)号：DE4415888A1

公开(公告)日：1994-11-17

申请号：DE4415888

申请日：1994-05-05

Applicant: BASF AG

Inventor： GRUEN VOLKER ,  DOBBELAAR JOHANNES DR ,  PLAUMANN HEINZ DR

IPC: C08K5/12 ,  C09D5/34 ,  C09K3/10 ,  E04B1/68

Abstract: Use of a mixture of a polymer powder A) which is composed of a) from 60 to 99% by weight of an aromatic vinyl compound having up to 20 carbon atoms, b) from 40 to 1% by weight of an ethylenically unsaturated nitrile and c) from 0 to 30% by weight of further monomers, and a plasticiser B> as a quick-setting, two-component sealing or filling composition which hardens at temperatures of from -30 to +50 DEG C.