公开(公告)号：JPH1095825A

公开(公告)日：1998-04-14

申请号：JP22324797

申请日：1997-08-20

Applicant: BASF AG

Inventor： JESCHKE TORSTEN ,  KRIESMANN ARNE ,  BRUNS UTE ,  SCHOLZ WOLFGANG ,  LUEDERWALD MICHAEL-CHRISTIAN ,  PEUKER HARTMUT

IPC: C08J9/12 ,  C08G18/06 ,  C08G18/10 ,  C08G18/42 ,  C08G18/48 ,  C08G18/64 ,  C08G18/65 ,  C08G18/76 ,  C08G101/00 ,  C08J9/33 ,  C08L75/04

Abstract: PROBLEM TO BE SOLVED: To provide a method for recycling polyurethane wherein polyurethane to be recycled for the production thereof can be introduced again into the production process without the necessity for resigning to the loss of quality. SOLUTION: A ground polyurethane in an amount of 0.1-40wt.% is reacted with a substance having two or more isocyanate groups (a) and active hydrogen atoms (b) and reactive with isocyanates and, in some cases, a polyaddition mixture (c) containing a chain extender and/or a crosslinking agent, a catalyst, a foaming agent and commonly used additives to produce a prepolymer in the first reaction step, and this prepolymer is reacted with water and, in some cases, the polyaddition mixture (c) to form polyurethane in the second reaction step.

公开(公告)号：PT850260E

公开(公告)日：2002-07-31

申请号：PT96932483

申请日：1996-09-09

Applicant: BASF AG

Inventor： SCHOLZ WOLFGANG ,  STRAUSS MICHAEL ,  BOLLMANN HEINZ ,  GENZ MANFRED ,  HELLMANN GERHARD ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  BRUNS UTE ,  PEUKER HARTMUT ,  VOELKEL RUDIGER

IPC: C08G18/40 ,  C08G18/10 ,  C08G18/65 ,  C08G18/72 ,  C08G18/76

Abstract: Compact and preferably cellular polyurethane elastomers are produced by reactinga) polyhydroxyl compounds having molecular weights of from 800 to 6000 and, if desired,b) chain extenders and/or crosslinkers having molecular weights of up to 800 [lacuna]c) naphthylene 1,5-diisocyanate and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 3,3'-dimethylbiphenyl diisocyanate, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or aliphatic diisocyanate having from 4 to 12 carbon atoms and/or cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are preferably reacted by the prepolymer method,in the presence or absence ofd) catalysts,e) blowing agents andf) additives. Isocyanate prepolymers suitable for this purpose are also described.

公开(公告)号：ES2156295T3

公开(公告)日：2001-06-16

申请号：ES96933440

申请日：1996-09-30

Applicant: BASF AG

Inventor： GENZ MANFRED ,  HELLMANN GERHARD ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  BRUNS UTE ,  BOLLMANN HEINZ

IPC: C08G18/10 ,  C08G18/40 ,  C08G18/72 ,  C08G18/76 ,  C08J9/14

Abstract: Compact and preferably cellular polyurethane elastomers based on polyisocyanate mixtures containing 3,3'-dimethylbiphenyl 4,4'-diisocyanate are produced by reactinga) relatively high molecular weight polyhydroxyl compounds and, if desired,b) low molecular weight hydroxyl-containing chain extenders and/or crosslinkers withc) 3,3'-dimethylbiphenyl 4,4'-diisocyanate and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or at least one aliphatic diisocyanate having from 4 to 12 carbon atoms and/or at least one cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are advantageously reacted by the prepolymer method,in the presence or absence ofd) catalysts,e) blowing agents andf) additives.Isocyanate prepolymers suitable for this purpose are preferably ones based on diphenylmethane 4,4'-diisocyanate and 3,3'-dimethylbiphenyl 4,4'-diisocyanate.

公开(公告)号：DE59606785D1

公开(公告)日：2001-05-17

申请号：DE59606785

申请日：1996-09-30

Applicant: BASF AG

Inventor： GENZ MANFRED ,  HELLMANN GERHARD ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  BRUNS UTE ,  BOLLMANN HEINZ ,  STRAUSS MICHAEL ,  SCHOLZ WOLFGANG ,  PEUKER HARTMUT ,  VOELKEL RUEDIGER

IPC: C08G18/10 ,  C08G18/40 ,  C08G18/72 ,  C08G18/76 ,  C08J9/14

Abstract: Compact and preferably cellular polyurethane elastomers based on polyisocyanate mixtures containing 3,3'-dimethylbiphenyl 4,4'-diisocyanate are produced by reactinga) relatively high molecular weight polyhydroxyl compounds and, if desired,b) low molecular weight hydroxyl-containing chain extenders and/or crosslinkers withc) 3,3'-dimethylbiphenyl 4,4'-diisocyanate and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or at least one aliphatic diisocyanate having from 4 to 12 carbon atoms and/or at least one cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are advantageously reacted by the prepolymer method,in the presence or absence ofd) catalysts,e) blowing agents andf) additives.Isocyanate prepolymers suitable for this purpose are preferably ones based on diphenylmethane 4,4'-diisocyanate and 3,3'-dimethylbiphenyl 4,4'-diisocyanate.

公开(公告)号：AU728982B2

公开(公告)日：2001-01-25

申请号：AU3439097

申请日：1997-06-30

Applicant: BASF AG

Inventor： GENZ MANFRED ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  NICHAU UTE ,  BOLLMANN HEINZ ,  STRAUSS MICHAEL ,  SCHOLZ WOLFGANG ,  VOELKEL RUDIGER ,  PEUKER HARTMUT ,  HELLMANN GERHARD

IPC: C08G18/10 ,  C08G18/42 ,  C08G18/48 ,  C08G18/66 ,  C08G18/72 ,  C08G18/76 ,  C08G101/00 ,  C08J3/14

Abstract: Compact and preferably cellular polyurethane elastomers are prepared by reactinga) relatively high molecular weight polyhydroxyl compounds and if desired,b) low molecular weight chain extenders and/or crosslinkers withc) phenylene 1,4-diisocyanate (p-PDI) and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 3,3'-dimethylbiphenyl diisocyanate, 1,2-diphenylethane diisocyanate and/or aliphatic diisocyanate, having from 4 to 12 carbon atoms and/or cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are advantageously reacted by the prepolymer method,in the presence or absence ofd) catalysts,e) blowing agents andf) additives.Isocyanate prepolymers suitable for this purpose are described.

公开(公告)号：CZ9800675A3

公开(公告)日：1998-10-14

申请号：CZ67598

申请日：1996-09-09

Applicant: BASF AG

Inventor： GENZ MANFRED ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  BRUNS UTE ,  BOLLMANN HEINZ ,  STRAUSS MICHAEL ,  SCHOLZ WOLFGANG ,  VOELKEL RUDIGER ,  PEUKER HARTMUT

IPC: C08G18/40 ,  C08G18/10 ,  C08G18/65 ,  C08G18/72 ,  C08G18/76

CPC classification number: C08G18/7678 ,  C08G18/10 ,  C08G18/721 ,  C08G2101/0066 ,  C08G2350/00 ,  C08G18/7657 ,  C08G18/32

公开(公告)号：CZ67598A3

公开(公告)日：1998-10-14

申请号：CZ67598

申请日：1996-09-09

Applicant: BASF AG

Inventor： GENZ MANFRED ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  BRUNS UTE ,  BOLLMANN HEINZ ,  STRAUSS MICHAEL ,  SCHOLZ WOLFGANG ,  VOELKEL RUDIGER ,  PEUKER HARTMUT

IPC: C08G18/40 ,  C08G18/10 ,  C08G18/65 ,  C08G18/72 ,  C08G18/76

Abstract: Compact and preferably cellular polyurethane elastomers are produced by reactinga) polyhydroxyl compounds having molecular weights of from 800 to 6000 and, if desired,b) chain extenders and/or crosslinkers having molecular weights of up to 800 [lacuna]c) naphthylene 1,5-diisocyanate and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 3,3'-dimethylbiphenyl diisocyanate, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or aliphatic diisocyanate having from 4 to 12 carbon atoms and/or cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are preferably reacted by the prepolymer method,in the presence or absence ofd) catalysts,e) blowing agents andf) additives. Isocyanate prepolymers suitable for this purpose are also described.

公开(公告)号：MX9801915A

公开(公告)日：1998-05-31

申请号：MX9801915

申请日：1996-09-09

Applicant: BASF AG

Inventor： GENZ MANFRED ,  HASELHORST WALTER ,  JESCHKE TORSTEN ,  BRUNS UTE ,  BOLLMANN HEINZ ,  STRAUSS MICHAEL ,  SCHOLZ WOLFGANG ,  VOELKEL RUDIGER ,  PEUKER HARTMUT

IPC: C08G18/40 ,  C08G18/10 ,  C08G18/65 ,  C08G18/72 ,  C08G18/76

Abstract: Los elastomeros de poliuretano compactos y de preferencia celulares se producen haciendo reaccionar a) compuestos de polihidroxilo que tienen pesos moleculares de 800 a 6000 y, si se desea, b) alargadores de cadena y/o agentes de reticulacion que tienen pesos moleculares hasta de 800 (lacuna) c) el 1,5-diisocianato de naftileno y por lo menos un diisocianato aromático adicional que se selecciona del grupo que consiste de diisocianato de tolileno, diisocianato de difenilmetano, diisocianato de 3,3'-dimetilbifenilo, diisocianato de 1,2-difeniletano y diisocianato de fenileno, y/o el diisocianato alifático que tiene de 4 a 12 átomos de carbono y/o el diisocianato cicloalifático que tiene de 6 a 18 átomos de carbono, en donde, en donde los componentes formadores (a), (c) y, si se usa, (b) de preferencia se hacen reaccionar mediante el método prepolimérico, en presencia o ausencia de d) catalizadores, e) agentes hinchadores, y f) aditivos. Se describen asimismo los prepolímeros de isocianato apropiados para este objeto.

公开(公告)号：CA2212117A1

公开(公告)日：1998-02-22

申请号：CA2212117

申请日：1997-08-18

Applicant: BASF AG

Inventor： SCHOLZ WOLFGANG ,  PEUKER HARTMUT ,  BRUNS UTE ,  JESCHKE TORSTEN ,  LUEDERWALD MICHAEL-CHRISTIAN ,  KRIESMANN ARNE

IPC: C08J9/12 ,  C08G18/06 ,  C08G18/10 ,  C08G18/42 ,  C08G18/48 ,  C08G18/64 ,  C08G18/65 ,  C08G18/76 ,  C08G101/00 ,  C08J9/33 ,  C08L75/04 ,  C08G18/08 ,  C08J11/04

Abstract: Polyurethanes are recycled by comminution to particle sizes of from 0.01 to 2 mm and addition to the polyaddition mixture for preparing polyurethanes from (a) polyisocyanates, (b) substances reactive toward isocyanates and having active hydrogens, and, if desired, (c) chain extenders and/or crosslinkers, catalysts, blowing agents and customary additives in an amount of from 0.1 to 40% by weight, based on the polyaddition mixture.

公开(公告)号：CA2231599A1

公开(公告)日：1997-04-24

申请号：CA2231599

申请日：1996-09-30

Applicant: BASF AG

Inventor： JESCHKE TORSTEN ,  GENZ MANFRED ,  HASELHORST WALTER ,  BRUNS UTE ,  STRAUSS MICHAEL ,  PEUKER HARTMUT ,  SCHOLZ WOLFGANG ,  HELLMANN GERHARD ,  BOLLMANN HEINZ ,  VOELKEL RUEDIGER

IPC: C08G18/10 ,  C08G18/40 ,  C08G18/72 ,  C08G18/76 ,  C08J9/14 ,  C08J9/04

Abstract: The object of the invention is a process for producing compact and preferably cellular polyurethane elastomers based on 3,3' dimethyl diphenyl 4,4' diisocyanate-containing polyisocyanate mixtures by the reaction of a) highmolecular polyhydroxyl compounds and possibly b) low-molecular hydroxyl groupcontaining chain extending and/or cross-linking agents with c) 3,3' dimethyl diphenyl 4,4' diisocyanate and at least one additional aromatic diisocyanate from the group toluylene diisocyanate, diphenyl methane diisocyanate, 1,2 diphenyl ethane diisocyanate and phenylene diisocyanate, and/or at least one aliphatic diisocyanate with 4 to 12 carbon atoms and/or at least one cycloaliphatic diisocyanate with 6 to 18 carbon atoms, in which the structural components (a), (c) and possibly (b) are advantageously brought to reaction by the prepolymer process, in the presence or absence of d) catalysts, e) foaming agents and f) additives and isocyanate prepolymers suitable therefor, preferably those based on 4,4' diphenyl methane diisocyanate and 3,3' dimethyl diphenyl 4,4' diisocyanate.