Monohydric polyfluorooxetane oligomers, polymers, and copolymers and coating containing the same

A monohydric polyfluorooxetane composition, comprising:

• an oligomer or polymer of the formula
• 7
• or combinations thereof, where OR1 is derived from a monoalcohol, where Dp is from 2 to about 150, where each n is the same or different and independent is an integer from 1 to about 6, R is hydrogen or an alkyl of 1 to 6 carbon atoms, and each Rf is the same or different and independently on each repeat unit is a linear or branched fluorinated alkyl of 1 to 20 carbon atoms, a minimum of 75 percent of the non-carbon atoms of the alkyl being fluorine atoms and optionally the remaining non-carbon atoms being H, I, Cl, or Br;
• or each Rf is the same or different and independently is a perfluorinated polyether having from 4 to 60 carbon atoms.

A monohydric polyfluorooxetane copolymer composition, comprising:

• at least one unit having the formula
• 11
• or combinations thereof, where OR1 is derived from a monoalcohol, where Dp is from 2 to about 150, where n is the same or different and independently is an integer from 1 to about 6, R is hydrogen or an alkyl of 1 to 6 carbon atoms, and each Rf is the same or different and independently on each repeat unit is a linear or branched fluorinated alkyl of 1 to 20 carbon atoms, a minimum of 75 percent of the non-carbon atoms of the alkyl being fluorine atoms and optionally the remaining non-carbon atoms being H, I, Cl, or Br;
• or each Rf is the same or different and independently is a perfluorinated polyether having from 4 to 60 carbon atoms, and
• at least one different co-unit.

A functionalized oligomer, polymer, or copolymer composition comprising:

• a monohydric polyfluorooxetane oligomer, polymer, or copolymer having a functional end group thereon, and said oligomer, or polymer, or copolymer comprising a unit of the formula
• 13
• or combinations thereof, where OR1 is derived from a monoalcohol, where Dp is from 2 to about 150, where n is the same or different and independently is an integer from 1 to about 6, R is hydrogen or an alkyl of 1 to 6 carbon atoms, and each Rf is the same or different and independently on each repeat unit is a linear or branched fluorinated alkyl of 1 to 20 carbon atoms, a minimum of 75 percent of the non-carbon atoms of the alkyl being fluorine atoms and optionally the remaining non-carbon atoms being H, I, Cl, or Br;
• or each Rf is the same or different and independently is a perfluorinated polyether having from 4 to 60 carbon atoms.