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1. 发明专利

CA2321058C FINE-PARTICLE POLYMER DISPERSIONS FOR PAPER SIZING 未知
公开(公告)号：CA2321058C
公开(公告)日：2008-09-30
申请号：CA2321058
申请日：1999-02-06
申请人： BAYER AG
发明人： ROICK THOMAS , KONIG JOACHIM , WENZ ECKHARD , SACKMANN GUNTER , HAUSCHEL BERND , KINKEL GABRIELE , THIELE BERND , KIJLSTRA JOHAN
IPC分类号： C08F2/24 , C08F2/44 , C08F2/22 , C08F4/40 , C08F212/08 , C08F220/18 , C08L3/02 , C08L25/14 , D21H17/28 , D21H17/35 , D21H17/37 , D21H17/43 , D21H21/16
摘要： The novel aqueous polymer dispersions based on styrol(meth)acrylic acid este r copolymers are obtained by radically initiated emulsion polymerization of (a) 30 to 60 wt. % of at least one optionally substituted styrol; (b) 60 to 30 wt. % of at least one (meth)acrylic acid C1-C4 alkyl ester, (c) 0 to 10 wt. % of other ethylinically unsaturated copolymerizable monomers and (d) 10 to 40 wt. % degraded starch with a molar weight M a = 500 to 10,000, in the presence of a graft-active, water-soluble redox system. Said dispersions are quite suitable for use as paper sizing agents.

2. 发明专利

AU2003296577A1 IMPACT-RESISTANT MODIFIED BLENDS 未知
公开(公告)号：AU2003296577A1
公开(公告)日：2004-06-23
申请号：AU2003296577
申请日：2003-11-17
申请人： BAYER AG
发明人： EICHENAUER HERBERT , URBANNECK BERND , ECKEL THOMAS , WENZ ECKHARD
IPC分类号： C08F279/02 , C08F279/04 , C08J5/10 , C08K5/523 , C08L25/00 , C08L27/12 , C08L33/00 , C08L51/04 , C08L51/06 , C08L55/02 , C08L59/00 , C08L67/02 , C08L69/00 , C08L77/00 , C08L101/00
摘要： A thermoplastic molding composition suitable for producing article having improved surface quality is disclosed. The composition includes A) at least one polymeric resin selected from the group consisting of polycarbonate, polyester carbonate, polyamide, polyalkylene terephthalate and polyoxymethylene, and B) a co-precipitated mixture of graft polymer B.1 the preparation of which entailed redox initiation and graft copolymer B.2 the preparation of which entailed persulfate initiation.

3. 发明专利

DE10049466A1 未知
公开(公告)号：DE10049466A1
公开(公告)日：2002-04-11
申请号：DE10049466
申请日：2000-10-06
申请人： BAYER AG
发明人： GASCHE HANS-ERICH , EICHENAUER HERBERT , VANHOORNE PIERRE , JANSEN ULRICH , WENZ ECKHARD , MOSS STEFAN
IPC分类号： C08F2/00 , C08F2/22 , C08F4/28 , C08F279/04 , C08L51/04 , C08L55/02 , C08J5/10
摘要： The invention relates to a method for producing graft rubber polymers of the ABS type by batch continuous emulsion polymerization, thereby obtaining latices having substantially reduced residual monomer contents, and to the graft rubber polymers so obtained. The remaining properties of the polymers produced according to said method are not impaired in any way.

4. 发明专利

AU739568B2 Fine-particle polymer dispersions for paper sizing 未知
公开(公告)号：AU739568B2
公开(公告)日：2001-10-18
申请号：AU3140499
申请日：1999-02-06
申请人： BAYER AG
发明人： KONIG JOACHIM , WENZ ECKHARD , SACKMANN GUNTER , ROICK THOMAS , THIELE BERND , KINKEL GABRIELE , KIJLSTRA JOHAN , HAUSCHEL BERND
IPC分类号： C08F2/44 , C08F2/22 , C08F2/24 , C08F4/40 , C08F212/08 , C08F220/18 , D21H17/28 , D21H17/35 , D21H17/37 , D21H17/43 , D21H21/16
摘要： This invention relates to aqueous polymer dispersions obtained by free radical emulsion copolymerization of ethylenically unsaturated monomers comprising(a) 30 to 60% by weight of at least one optionally substituted styrene,(b) 60 to 30% by weight of at least one C1-C4-alkyl (meth)acrylate, and(c) 0 to 10% by weight of other ethylenically unsaturated copolymerizable monomers,in the presence of(d) 10 to 40% by weight of degraded starch having a molecular weight Mn of 500 to 10,000, and(e) a graft-linking, water-soluble redox system as free radical initiator for the free radical emulsion copolymerization,wherein the sum (a)+(b)+(c)+(d) is 100%.

5. 发明专利

AU739157B2 Improved sizing agents for paper background of the invention 未知
公开(公告)号：AU739157B2
公开(公告)日：2001-10-04
申请号：AU9702398
申请日：1998-12-10
申请人： BAYER AG
发明人： SACKMANN GUNTER , WENZ ECKHARD , KONIG JOACHIM , JANSEN BERNHARD , ROICK THOMAS , THIELE BERND , KIJLSTRA JOHAN
IPC分类号： C08F2/20 , C08F2/24 , C08F251/00 , D21H19/10 , D21H19/20 , D21H21/16 , C08F2/22
摘要： Aqueous emulsion polymers, obtained by radical-initiated polymerisation of monomers in the presence of degraded starch and polymeric emulsifier(s) selected from sulfonic acid group-containing maleic anhydride co- and/or ter-polymers and/or sulfonic acid group-containing branched oligo-urethanes. Independent claims are also included for (a) the production of emulsion polymers by polymerizing a mixture of degraded starch and polymeric emulsifier(s) as above with monomer(s) in the presence of a water-soluble redox system to a monomer conversion of about 95% and then taking the polymerisation to completion in the presence of a sparingly water-soluble organic peroxide; (b) new maleic anhydride terpolymers of formula (I). M = a cation-forming group; n = 1 or 2; R = 1-10C aliphatic group or 6-10C aromatic group; R = H or methyl; R = H, 1-6C alkyl or phenyl; R = H or methyl; R = methyl or ethyl; and x, y, z = numbers such that the weight average molecular weight (Mw) of the polymer is 5000-500,000, preferably 10000-200000. The ratio x:y:z = (1:1:0.1)-(1:3:0.5).

6. 发明专利

CA2402202A1 THERMOPLASTIC MOULDING MATERIALS BASED ON SPECIAL GRAFT RUBBER COMPONENTS 未知
公开(公告)号：CA2402202A1
公开(公告)日：2001-09-13
申请号：CA2402202
申请日：2001-02-26
申请人： BAYER AG
发明人： JANSEN ULRICH , ZABROCKI KARL , GASCHE HANS-ERICH , SUN LIQING-LEE , MOSS STEFAN , HAUERTMANN HANS-BERNHARD , ALBERTS HEINRICH , WENZ ECKHARD , EICHENAUER HERBERT
IPC分类号： C08J5/00 , C08F2/22 , C08F279/02 , C08F279/04 , C08L25/12 , C08L51/04 , C08L55/02 , C08L101/00
摘要： The invention relates to compositions containing a graft polymer which can b e obtained by radical polymerisation, a vinyl (co)polymer and optionally, resi ns selected from the following group: polycarbonates, polyester carbonates, polyesters and polyamides. The invention is characterised in that the proces s of producing the graft polymer A) comprises adjusting the pH of the rubber latex to a value of 9 to 11 before the beginning of the graft polymerisation reaction, using redox initiator components in quantities of 0.1 to 2.5 wt. % (in relation to the monomers added) and ensuring that the pH value neither exceeds 11.0 nor falls below 8.8 throughout the entire graft polymerisation reaction and remains constant during the reaction, within a variation range of .plusmn. 0.5 units; the temperature difference between the beginning and the end of the reaction being at least 10 ~C._

7. 发明专利

AU5031101A Abs moulding material with improved workability and a high lustre 未知
公开(公告)号：AU5031101A
公开(公告)日：2001-09-03
申请号：AU5031101
申请日：2001-02-12
申请人： BAYER AG
发明人： EICHENAUER HERBERT , WENZ ECKHARD , ALBERTS HEINRICH , JANSEN ULRICH , GASCHE HANS-ERICH
IPC分类号： C08J5/00 , C08F279/02 , C08F279/04 , C08L25/12 , C08L51/04 , C08L55/02 , C08L67/00 , C08L69/00 , C08L77/00
摘要： ABS-type polymer compositions in which the graft copolymer component is obtained by emulsion polymerization of styrene and acrylonitrile in presence of a mixture of three polybutadiene lattices (fine, medium and coarse with average particle sizes of up to 250, 250-350 and more than 350 nm respectively), at least one of which is obtained by seed polymerisation. Polymer compositions (PC) containing (I) a graft copolymer rubber obtained by the emulsion polymerisation of styrene (S) and acrylonitrile (AN) in a wt. ratio of (95:5)-(50:50) (either or both of which may be partly or completely replaced by alpha -methylstyrene, methyl methacrylate and/or N-phenylmaleimide) in presence of a mixture of three butadiene polymer lattices (A, B, C; optionally containing 0-50 wt% other vinyl comonomer units) with average particle diameters (d50) of up to 250 nm, 250-350 nm and more than 350 nm, particle size distributions (d90 - d10) of 20-80 nm, 30-100 nm and 40-150 nm, and gel contents of 30-95 wt%, 30-80 wt% and 50-95 wt% respectively, using a wt. ratio of (graft monomers):(butadiene polymer) = (5:95)-(70:30), and (II) a rubber-free copolymer of (S) and (AN) (and/or other monomers as above) in a wt. ratio of (95:5)-(50:50). At least one of the lattices (A, B, C) is produced by seed polymerisation. Independent claims are also included for: (a) a process for the production of PC by mixing (I) (obtained as described above) with (II); (b) molded parts obtained from PC; (c) graft copolymer rubbers (I) obtained as described above.

8. 发明专利

DE19949464A1 未知
公开(公告)号：DE19949464A1
公开(公告)日：2001-03-01
申请号：DE19949464
申请日：1999-08-25
申请人： BAYER AG
发明人： KOEHLER BURKHARD , SEIDEL RUEDIGER , HALLE OLAF , WENZ ECKHARD
IPC分类号： C08J5/20 , B01J39/20 , C08F2/18 , C08F4/04 , C08F8/36 , C08F212/08 , C08F257/02 , C08L25/08
摘要： Preparation of a sulfonated bead polymer comprises polymerizing a suspension of seed polymer and a monomer mixture of styrene, crosslinker and optionally phenol derivative in an aqueous phase and sulfonating. Preparation of sulfonated bead polymer comprises polymerizing a suspension of seed polymer and a monomer mixture comprising 67-99.45 wt.% styrene, 0.05-20 wt.% crosslinker and optionally 0.5-8 wt.% vinyl pyridine in an aqueous phase using 0.1-1.1 pts. wt. initiator and functionalizing by sulfonation. Independent claims are included for copolymers obtained by suspension polymerization as above without functionalization and the obtained bead polymers.

9. 发明专利

DE50115383D1 未知
公开(公告)号：DE50115383D1
公开(公告)日：2010-04-22
申请号：DE50115383
申请日：2001-09-24
申请人： BAYER AG
发明人： GASCHE HANS-ERICH , EICHENAUER HERBERT , VANHOORNE PIERRE , JANSEN ULRICH , WENZ ECKHARD , MOSS STEFAN
IPC分类号： C08F279/04 , C08F2/00 , C08F2/22 , C08F4/28 , C08L51/04 , C08L55/02
摘要： The invention relates to a process for the preparation of graft rubber polymers of the ABS type by emulsion polymerization according to the so-called fed batch process, in which latexes having markedly reduced residual monomer contents are obtained, and to compositions containing the mentioned graft rubber polymers. The polymers so obtained have no negative effects at all on other properties

10. 发明专利

DE10137782A1 Polymer composition of very constant property profile containing a graft rubber polymerizate, butadiene polymerization latex and rubber-free copolymerizate useful for the production of shaped parts 未知
公开(公告)号：DE10137782A1
公开(公告)日：2003-02-13
申请号：DE10137782
申请日：2001-08-02
申请人： BAYER AG
发明人： EICHENAUER HERBERT , BUCHHOLZ VERA , WENZ ECKHARD
IPC分类号： C08F2/24 , C08F2/44 , C08F6/22 , C08F279/02 , C08F279/04 , C08F285/00 , C08L25/12 , C08L35/00 , C08L51/04 , C08L55/02 , C08L67/00 , C08L69/00 , C08J5/02
摘要： A polymer composition containing (I) a graft rubber polymerizate obtained by emulsion polymerization of styrene and acrylonitrile, in the presence of a butadiene polymerization latex (A), (II) a graft rubber polymerizate of higher particle size, (III) a rubber-free copolymerizate where the butadiene polymerization latex is obtained by seed polymerization and a butadiene latex polymerizate (B) obtained by agglomeration is new. A polymer composition containing : (I) at least one graft rubber polymerizate obtained by emulsion polymerization of styrene and acrylonitrile in 95:5 to 50:50 wt. ratio where the styrene and/or acrylonitrile can be completely or partially replaced by alpha-methylstyrene, methyl methacrylate, or N-phenylmaleimide or their mixtures, in the presence of a butadiene polymerization latex (A) of mean particle diameter d50 = 80-220 nm; (II) at least one graft rubber polymerizate obtained by emulsion polymerization of styrene and acrylonitrile in 95:5 to 50:50 wt. ratio where the styrene and/or acrylonitrile can be completely or partially replaced by alpha-methylstyrene, methyl methacrylate, or N-phenylmaleimide or their mixtures, in the presence of a butadiene polymerization latex (A) of mean particle diameter d50 = 350-650 nm; (III) at least one rubber-free copolymerizate from styrene and acrylonitrile in 95:5 to 50:50 wt. ratio where the styrene and/or acrylonitrile can be completely or partially replaced by alpha-methylstyrene, methyl methacrylate, or N-phenylmaleimide or their mixtures, where the butadiene polymerization latex is obtained by seed polymerization using butadiene polymerizate/seed latex of mean particle diameter 10-100 nm and the butadiene latex polymerizate (B) is obtained by agglomeration using butadiene polymerizate latex (A) as starting latex. An Independent claim is also included for preparation of the polymer composition as described above.

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