Fluorinated compositions and surface treatments made therefrom

摘要

A polymeric or oligomeric composition comprising at least one first divalent unit represented by formula:;
and at least one of a second divalent unit comprising a pendant phosphonate group —P(O)(OY)2 or a monovalent unit comprising a thioether linkage and a terminal Z group, wherein each Z group is independently —P(O)(OY)2 or —O—P(O)(OY)2. Rf is a perfluoropolyether group. Q is a bond, —C(O)—N(R1)—, or —C(O)—O—. R″, R′″, R and R1 are each independently hydrogen and alkyl having from 1 to 4 carbon atoms. X is alkylene, arylalkylene, and alkylarylene, wherein alkylene, arylalkylene, and alkylarylene are each optionally interrupted by at least one ether linkage. Y is hydrogen, alkyl, trialkylsilyl, and a counter cation. Methods of treating a surface using these compositions and articles with a surface in contact with these compositions are provided. Methods of making these compositions are also provided.

主权项

1. A polymeric or oligomeric composition comprising at least one first divalent unit represented by formula:and
a monovalent unit comprising a thioether linkage and at least one terminal Z group, wherein each Z group is independently selected from the group consisting of —P(O)(OY)2 and —O—P(O)(OY)2; wherein
each Rf is independently a perfluoropolyether group;each Q is independently selected from the group consisting of a bond, —C(O)—N(R1)—, and —C(O)—O—;R and R1 are each independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms;each X is independently selected from the group consisting of alkylene, arylalkylene, and alkylarylene, wherein alkylene, arylalkylene, and alkylarylene are each optionally interrupted by at least one ether linkage; andeach Y is independently selected from the group consisting of hydrogen, alkyl, trialkylsilyl, and a counter cation.