公开(公告)号：US07358306B2

公开(公告)日：2008-04-15

申请号：US10177859

申请日：2002-06-20

Applicant: Stefano Turri ,  Sergio Novelli ,  Anna Staccione

Inventor： Stefano Turri ,  Sergio Novelli ,  Anna Staccione

IPC: C08L75/14 ,  C08L75/08 ,  C08G71/04

CPC classification number: C08G18/675 ,  C08G18/10 ,  C08G18/5015 ,  C08G18/3203

Abstract: Curable (per)fluoropolyether polyurethanes obtained by reaction in a first step of a) (per)fluoropolyether diols having a number average molecular weight from 2,000 to 5,000; with b) diisocyanates of formula OCN—R—NCO   (VIA) wherein R is a hydrogenated and/or fluorinated radical; in a second step with the compound c) saturated or unsaturated aliphatic hydrogenated diols, (alkyl)cycloaliphatic, aromatic; oligomers or polymers of butadiene with a number average molecular weight from 500 to 4,000 having end hydroxyl groups; provided that: when the diisocyanate b) is used and the radical R in formula (VIA) is: —Ph—CH2—Ph—, the hydrogenated diols c) are optional; when the radical R has a meaning different from that above mentioned, at least one of the used hydrogenated diols c) is selected from those belonging to the c2)-c6) groups; the sum of the equivalents of the compounds a) and c) being equal to the equivalents of the compound b).

Abstract translation: 在第一步中通过在数均分子量为2,000至5,000的a）（全）氟代聚醚二醇中反应获得的可固化（全）氟聚醚聚氨酯; 其中b）式的线性公式描述=“在线公式”end =“lead”→OCN-R-NCO（VIA）<βin-line-formula description =“In-line Formulas “end =”tail“？>其中R是氢化和/或氟化基团; 在第二步中，化合物c）饱和或不饱和脂族氢化二醇，（烷基）脂环族，芳族; 数均分子量为500〜4000的具有末端羟基的丁二烯低聚物或聚合物; 条件是：当使用二异氰酸酯b）时，式（VIA）中的基团R为：-Ph-CH 2 -Ph-，氢化二醇c）为任选的; 当基团R具有与上述不同的含义时，使用的氢化二醇c）中的至少一种选自属于C 2〜C 6的那些， ）组 化合物a）和c）的当量的总和等于化合物b）的当量。