公开(公告)号：US5043410A

公开(公告)日：1991-08-27

申请号：US407735

申请日：1989-09-15

申请人： Alberto Re ,  Francesco Giavarini ,  Cesare Cova

发明人： Alberto Re ,  Francesco Giavarini ,  Cesare Cova

IPC分类号： C08G18/10 ,  C08G18/50 ,  C08G18/67

CPC分类号： C08G18/675 ,  C08G18/10 ,  C08G18/5015

摘要： Fluorinated polyurethanes containing blocks having a perfluoropolyethereal structure, with rubber-like properties, alternated with stiff structural units are taught. The stiff units are at least partially provided with a double bond of the olefinic type, which is suitable for causing the cross-linking of the polymeric chains with a cross-linking system of the radicalic type.

公开(公告)号：US5026814A

公开(公告)日：1991-06-25

申请号：US407951

申请日：1989-09-15

申请人： Alberto Re ,  Francesco Giavarini

发明人： Alberto Re ,  Francesco Giavarini

IPC分类号： C08G18/10 ,  C08G18/50

CPC分类号： C08G18/5015 ,  C08G18/10

摘要： The invention relates to polyurethanes comprising polyoxyperfluoroalkylene blocks of rubber-like nature and rigid segments derived from short-chain aliphatic diols, optionally from aliphatic diamines, and from aliphatic or cycloaliphatic or aromatic diisocyanate. The number of the rigid-type segments is equal to or greater than the number of the polyoxyperfluoroalkylene blocks. The polyurethane are characterized by a glass transition temperature lower than -80.degree. C., a tensile strength greater than 30 kg/cm.sup.2, a hardness between 50 Shore A and 75 Shore D, and good thermoforming characteristics.

公开(公告)号：US5332798A

公开(公告)日：1994-07-26

申请号：US994667

申请日：1992-12-22

申请人： Enrico Ferreri ,  Francesco Giavarini ,  Claudio Tonelli ,  Tania Trombetta ,  Ronald E. Zielinski

发明人： Enrico Ferreri ,  Francesco Giavarini ,  Claudio Tonelli ,  Tania Trombetta ,  Ronald E. Zielinski

IPC分类号： C08G18/10 ,  C08G18/50

CPC分类号： C08G18/5015 ,  C08G18/10

摘要： Fluorinated polyurethanes and polyurethane-ureas, of heat-processable, elastomeric type, constituted by rubber-like blocks and hard blocks, comprising segments derived from:(a) a macroglycol or polybutadiene-diol;(b) a perfluoropolyether-diol of formulaHO(CH.sub.2 CH.sub.2 O).sub.n --CH.sub.2 --Q--CH.sub.2 --(OCH.sub.2 CH.sub.2).sub.n OH wherein Q is a perfluoropolyether chain and "n" is comprised within the range of from 1 to 5;(c) an aromatic, aliphatic, or cycloaliphatic diisocyanate; and(d) an aliphatic, cycloaliphatic or aromatic diol or diamine, containing from 2 to 14 carbon atoms.They contain from 4 to 30% by weight of fluorine, from 10 to 60% by weight of hard components, with the molar ratio of rubber-like components (a): (b) comprised within the range of from 2 to 20. At least 80% of rubber-like segments deriving from (b) component are connected, at least at one of their sides, through a segment deriving from (c) component, with a rubber-like segment deriving from (a) component.

摘要翻译： 由橡胶状块和硬块组成的可热处理的弹性体类型的氟化聚氨酯和聚氨酯脲，包含衍生自（a）大分子二聚体或聚丁二烯 - 二醇的链段; （b）式HO（CH 2 CH 2 O）n -CH 2 -Q-CH 2 - （OCH 2 CH 2）n OH的全氟聚醚二醇，其中Q是全氟聚醚链，“n”包括在1至5的范围内; （c）芳族，脂族或脂环族二异氰酸酯; 和（d）含有2至14个碳原子的脂族，脂环族或芳族二醇或二胺。 它们含有4至30重量％的氟，10至60重量％的硬组分，橡胶状组分（a）：（b）的摩尔比在2至20的范围内。在 （b）成分的至少80％的橡胶状链段至少在其一侧通过衍生自（c）成分的链段与来自（a）成分的橡胶状链段连接。