公开(公告)号：US5621065A

公开(公告)日：1997-04-15

申请号：US626229

申请日：1996-03-29

申请人： Heinz Pudleiner ,  Hans-Georg Hoppe ,  Klaus K onig

发明人： Heinz Pudleiner ,  Hans-Georg Hoppe ,  Klaus K onig

IPC分类号： C08G18/42 ,  C08G18/44 ,  C08G18/65 ,  C08G64/00 ,  C08G64/02 ,  C08G64/20 ,  C08G18/34

CPC分类号： C08G18/44 ,  C08G64/02

摘要： This invention relates to novel polycarbonates having hydroxyl end groups and an average molecular weight of 500 to 12,000, as determined by measuring the OH number, and being based on dimer diols containing either 36 or 44 carbon atoms. These novel polycarbonates are particularly suitable for the use in a process for the production of polyurethane plastics which are stable to hydrolysis and oxidation.

摘要翻译： 本发明涉及具有羟基端基和平均分子量为500至12,000的新型聚碳酸酯，其通过测量OH值而确定，并且基于含有36或44个碳原子的二聚体二醇。 这些新型聚碳酸酯特别适用于生产对水解和氧化稳定的聚氨酯塑料的方法。

公开(公告)号：US5374704A

公开(公告)日：1994-12-20

申请号：US166760

申请日：1993-12-14

申请人： Hanns-Peter Muller ,  Rolf Dhein ,  Herbert Hugl ,  Heinz Pudleiner

发明人： Hanns-Peter Muller ,  Rolf Dhein ,  Herbert Hugl ,  Heinz Pudleiner

IPC分类号： A61L24/00 ,  A61L27/00 ,  A61L27/18 ,  A61L29/00 ,  A61L29/06 ,  A61L31/06 ,  B65D65/38 ,  C08G18/08 ,  C08G18/10 ,  C08G18/44 ,  C08G18/73 ,  C08G18/75 ,  C08G18/77 ,  C08J5/18

CPC分类号： C08G18/773 ,  A61L27/18 ,  A61L29/06 ,  A61L31/06 ,  C08G18/10 ,  C08G18/44 ,  C08G18/75

摘要： The present invention is directed to pure polyurethanes which are biocompatible. These pure polyurethanes comprise the reaction product of:a) a pre-adduct containing NCO groups and comprising the reaction product ofi) a diisocyanate selected from the group consisting of aliphatic diisocyanates, cycloaliphatic diisocyanates, and mixtures thereof, withii) a macrodiol having a molecular weight of from 500 to 10,000 wherein said components i) and ii) reacted at temperatures of from 90.degree.-150.degree. C.; withb) a chain extender having a molecular weight of from 62 to 400 and being selected from the group consisting of aliphatic diols, cycloaliphatic diols, and mixtures thereof, and optionally,c) additional diisocyanate selected from the group consisting of aliphatic diisocyanates, cycloaliphatic diisocyanates, and mixtures thereof,wherein said component c), when added, is added either simultaneously with component b) or separately from component b), the quantities of components a)i), a)ii), and c) being such that the molar ratio of diisocyanate to macrodiol is from 1.5:1 to 22:1, and the reaction of components a) and b) and optionally component c) is conducted at temperatures of from 90.degree. to 230.degree. C., with the proviso that the reaction conditions are maintained until said polyurethane has a melt viscosity of at least 2500 mPa.s at 120.degree. C.

摘要翻译： 本发明涉及生物相容的纯聚氨酯。 这些纯聚氨酯包括以下物质的反应产物：a）含有NCO基团的预加合物，其包含i）选自脂族二异氰酸酯，脂环族二异氰酸酯及其混合物的二异氰酸酯的反应产物，ii）具有 分子量为500至10,000，其中所述组分i）和ii）在90-150℃的温度下反应; 其中b）分子量为62至400的扩链剂，并且选自脂族二醇，脂环族二醇及其混合物，以及任选地，c）另外的二异氰酸酯，其选自脂族二异氰酸酯，脂环族脂族 二异氰酸酯及其混合物，其中所述组分c）在加入时与组分b）同时加入或与组分b）分开加入，组分a）i），a）ii）和c）的数量使得 二异氰酸酯与大分子二醇的摩尔比为1.5:1至22:1，组分a）和b）和任选组分c）的反应在90℃至230℃的温度下进行，条件是 维持反应条件，直到所述聚氨酯在120℃下的熔体粘度为至少2500mPa.s。