公开(公告)号：US07288682B2

公开(公告)日：2007-10-30

申请号：US11176218

申请日：2005-07-08

Applicant: Alexandre Tchistiakov ,  Simonetta Fontana ,  Claudio Tonelli

Inventor： Alexandre Tchistiakov ,  Simonetta Fontana ,  Claudio Tonelli

IPC: C07C41/03

CPC classification number: C08G65/30 ,  C08G65/007

Abstract: A process for separating bifunctional perfluoropolyethers (PFPEs) having two terminations —CH2OH from their mixtures with monofunctional PFPEs with one termination —CH2OH, of general formula X1—O—Rf—Y   (I) wherein Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight of 500-10,000; X1 and Y are end groups selected from —CFXCH2OH (wherein X is F or CF3), —CF3, —CF2Cl, —CF2CF2Cl, —C3F6Cl, —CF2Br, —CF2CF3, wherein at least one of the two end groups is —CFXCH2OH, said process comprising the steps of: a) addition of the PFPE mixture to an adsorbing solid phase, under stirring; b) filtration of the mixture obtained in a): c) addition to the solid phase filtered in b), of a PFPE mixture having an average functionality higher than that of the PFPE mixture of the liquid filtered in b); c2) filtration of the mixture obtained in c); and subsequent treatment of the solid phase separated in c2) with a polar solvent obtaining a liquid containing the PFPE having high functionality.

Abstract translation: 具有两个端基-CH 2 OH的双功能全氟聚醚（PFPE）与其具有一个终止-CH 2 OH的单官能PFPE的混合物的方法，其通式为 -line-formula description =“In-line Formulas”end =“lead”？> X -O-Rf-Y（I）<？in-line-formula description =“In-line 式“end =”tail“？>其中Rf是数均分子量为500〜10000的全氟聚氧亚烷基链; X 1和Y是选自-CFXCH 2 OH的端基（其中X是F或CF 3 H 3），-CF 3 -CF 2，Cl，-CF 2，CF 2，Cl，-C 3， 其中，两个末端基团中的至少一个是C 1 -C 6亚烷基，C 1 -C 6亚烷基， 是-CFXCH 2 OH，所述方法包括以下步骤：a）在搅拌下将PFPE混合物加入到吸附固相中; b）过滤a）中获得的混合物：c）加入在b）中过滤的固相中，平均官能度高于在b）中过滤的液体的PFPE混合物的平均官能度的PFPE混合物; c2）过滤c）中得到的混合物; 随后用极性溶剂处理在c2）中分离的固相，得到含有具有高官能度的PFPE的液体。

公开(公告)号：US20060009660A1

公开(公告)日：2006-01-12

申请号：US11176218

申请日：2005-07-08

Applicant: Alexandre Tchistiakov ,  Simonetta Fontana ,  Claudio Tonelli

Inventor： Alexandre Tchistiakov ,  Simonetta Fontana ,  Claudio Tonelli

IPC: C07C41/03

CPC classification number: C08G65/30 ,  C08G65/007

Abstract: A process for separating bifunctional perfluoropolyethers (PFPEs) having two terminations —CH2OH from their mixtures with monofunctional PFPEs with one termination —CH2OH, of general formula X1—O—Rf—Y  (I) wherein Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight of 500-10,000; X1 and Y are end groups selected from —CFXCH2OH (wherein X is F or CF3), —CF3, —CF2Cl, —CF2CF2Cl, —C3F6Cl, —CF2Br, —CF2CF3, wherein at least one of the two end groups is —CFXCH2OH, said process comprising the steps of: a) addition of the PFPE mixture to an adsorbing solid phase, under stirring; b) filtration of the mixture obtained in a): c) addition to the solid phase filtered in b), of a PFPE mixture having an average functionality higher than that of the PFPE mixture of the liquid filtered in b); c2) filtration of the mixture obtained in c); and subsequent treatment of the solid phase separated in c2) with a polar solvent obtaining a liquid containing the PFPE having high functionality.

Abstract translation: 具有两个端基-CH 2 OH的双功能全氟聚醚（PFPE）与其具有一个终止-CH 2 OH的单官能PFPE的混合物的方法，其通式为 -line-formula description =“In-line Formulas”end =“lead”？> X -O-Rf-Y（I）<？in-line-formula description =“In-line 式“end =”tail“？>其中Rf是数均分子量为500〜10000的全氟聚氧亚烷基链; X 1和Y是选自-CFXCH 2 OH的端基（其中X是F或CF 3 H 3），-CF 3 -CF 2，Cl，-CF 2，CF 2，Cl，-C 3， 其中，两个末端基团中的至少一个是C 1 -C 6亚烷基，C 1 -C 6亚烷基，C 1 -C 6亚烷基， 是-CFXCH 2 OH，所述方法包括以下步骤：a）在搅拌下将PFPE混合物加入到吸附固相中; b）过滤a）中获得的混合物：c）加入在b）中过滤的固相中，平均官能度高于在b）中过滤的液体的PFPE混合物的平均官能度的PFPE混合物; c）过滤c）中得到的混合物; 并且用极性溶剂处理在c 2）中分离的固相，得到含有具有高官能度的PFPE的液体。