公开(公告)号：DE102005008242A1

公开(公告)日：2006-08-24

申请号：DE102005008242

申请日：2005-02-22

Applicant: BASF AG

Inventor： MARTEN ELKE ,  HEIDEMANN ANDREAS ,  SCHUETTE MARKUS ,  STRAUS MICHAEL ,  BOLLMANN HEINZ ,  HANSEN RALF

IPC: C08G18/10 ,  B29C44/02 ,  C08G18/48 ,  C08J9/22 ,  F16F9/32

Abstract: Cylindrical molded bodies (I) comprises cellular polyurethane elastomers with a density of 300-900 kg/m 3>, a tensile strength of >= 2 N/mm 2>, a breach extension of >= 200% and a tear resistance of >= 8 N/mm, where the cellular polyurethane elastomers are based on reaction of: (i) isocyanate groups of prepolymers based on methylenediphenyldiisocyanate and polyetherdiol; with (ii) cross linking components containing polyetheralcohol; diol with a molecular weight of 62-499 g/mol; water; and catalysts. Cylindrical molded bodies (I) comprises cellular polyurethane elastomers with a density of 300-900 kg/m 3>according to DIN EN ISO 845, a tensile strength of >= 2 N/mm 2>according to DIN EN ISO 1798, a breach extension of >= 200% according to DIN EN ISO 1798 and a tear resistance of >= 8 N/mm according to DIN ISO 34-1 B, where the cellular polyurethane elastomers are based on reaction of: (i) prepolymers exhibiting isocyanate groups based on methylenediphenyldiisocyanate and polyetherdiol with a molecular weight of 1500-3000 g/mol based on propylene oxide and/or ethyleneoxide; with (ii) cross linking components containing polyetheralcohol with a nominal functionality of 2-3 in relation to isocyanates and a molecular weight of 1500-6000 g/mol based on propylene oxide and/or ethyleneoxide; diol with a molecular weight of 62-499 g/mol; water; and catalysts, where the polyol exhibits an average molecular mass of smaller than 3900 g/mol, where the average polyol molecular mass (M(polyol)) is calculated by (M b11xm b11+...+M b1nxm b1n)xW p+(M b21xm b21+...+M b2nxm b2n)xW v/(m b11+...+m b1n)xW p+(m b21+...+m b2n)xW v, where M (polyol) is average polyol molecular mass in g/mol; M b11(and/or M b1n) is molecular mass of polyol b11 (and/or polyol b1n) in (i) in g/mol; m b11(and/or m b1n) is mass proportion of polyol b11 (and/or polyol b1n) in (i) in g/g; W pis mass proportion of (i) in the cylindrical molded article in g/g; M b21(and/or M b2n) is molecular mass of polyol b21 and/or (polyol b2n) in (ii) in g/mol; m b21(and/or m b2n) is mass proportion of polyol b21 (and/or polyol b2n) in (ii) in g/g; and W vis mass proportion of (ii) in the cylindrical molded article in g/g. Independent claims are included for: (1) automobile chassis containing shock absorbers, a hollow cylindrical molded bodies, which is placed on its piston rod; and (2) the preparation of (I).

公开(公告)号：DE102005011784A1

公开(公告)日：2006-09-14

申请号：DE102005011784

申请日：2005-03-11

Applicant: BASF AG

Inventor： MARTEN ELKE ,  WEIGELT ELKE ,  HUPRIKAR ANAND G ,  STRAUS MICHAEL

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/83

Abstract: A prepolymer having an NCO content of less than 10%, based on the reaction of (a) diisocyanate with (b) polyether alcohol, the (b) polyether alcohol comprising (b1) and (b2) and/or (b3) with the following meanings for (b1), (b2) and (b3): (b1) polytetrahydrofuran having a molecular weight of from 1800 to 2100 g/mol and (b2) polyether alcohol having a molecular weight of from 500 to 7000 g/mol, based on ethylene oxide and/or propylene oxide, and/or (b3) polytetrahydrofuran having a molecular weight of from 800 to 1200 g/mol.

公开(公告)号：ZA9608645B

公开(公告)日：1998-04-14

申请号：ZA9608645

申请日：1996-10-14

Applicant: BASF AG

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

IPC: C08G18/10 ,  C08G18/40 ,  C08G18/72 ,  C08G18/76 ,  C08J9/14 ,  C08G ,  C08J ,  C08L

CPC classification number: C08J9/14 ,  C08G18/724 ,  C08G18/7607 ,  C08G18/7671 ,  C08G2101/0008 ,  C08G2101/0066 ,  C08G2101/0083 ,  C08J2375/04

公开(公告)号：ZA968645B

公开(公告)日：1998-04-14

申请号：ZA968645

申请日：1996-10-14

Applicant: BASF AG

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

IPC: C08G18/10 ,  C08G18/40 ,  C08G18/72 ,  C08G18/76 ,  C08J9/14 ,  C08G ,  C08L ,  C08J

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.