Patent ID: 7422836

Claim:
an oligomer comprising repeating units derived from monomers in accordance with one or more of Formulae A, B, C, D or E: said repeating units comprising a first repeating unit derived monomers comprising a fluorinated acid labile group substituent according to Formula A and/or Formula E, and optionally other repeating units comprising one or more of the monomers according to Formulae A, B, C, D or E, with the proviso that if a monomer according to Formula A is not present, a monomer according to Formula E must be included and if a monomer according to Formulae D or E are present at least one monomer according to Formulae A, B or C must be present, with the proviso that where at least one repeating unit is derived from Formulae D or E , deriving the oligomer comprises employing a free radical catalyst and where said repeating units are only derived from monomers according to Formulae A, B and/or C, deriving the oligomer comprises employing a Ni or Pd comprising catalyst; wherein m is an integer from 0 to 5; Z is —CH 2 —, —CH 2 —CH 2 —, —O—, —S—, or —NH—; wherein at least one substituent R 1 , R 2 , R 3 , R 4 , independently, is a fluorinated carbinol having from 1 to about 10 carbon atoms optionally protected by an acid labile group, and the remaining R 1 , R 2 , R 3 , and R 4 , independently, are hydrogen, halogen, or a hydrocarbyl containing from 1 to about 20 carbon atoms, or a hydrocarbyl having from 1 to about 20 carbon atoms substituted at any hydrogen atom with an O, S, N, or Si, or a fluorinated hydrocarbyl having from 1 to about 20 carbon atoms wherein each carbon atom, independently, is substituted with 0, 1, 2, or 3 fluorine atoms; wherein at least one of R 5 , R 6 , R 7 , or R 8 independently contain an acid labile moiety, and the remaining one or more R 5 , R 6 , R 7 , or R 8 , independently are hydrogen, halogen, or a hydrocarbyl having from 1 to about 20 carbon atoms, or a hydrocarbyl having from 1 to about 20 carbon atoms substituted at any hydrogen atom with an O, S, N, or Si, or a fluorinated hydrocarbyl having from 1 to about 20 carbon atoms wherein each carbon atom, independently, is substituted with 0, 1, 2, or 3 fluorine atoms; wherein R 9 , R 10 , R 11 , or R 12 are independently selected from a hydrogen atom, a hydrocarbyl having from 1 to about 20 carbon atoms, and a hydrocarbyl having from 1 to about 20 carbon atoms substituted at any hydrogen atom, with O, S, N, or Si, and optionally contain an epoxy, hydroxyl, and/or carboxylic acid functional group; wherein Y is a fluorinated carbinol having from 1 to about 10 carbon atoms optionally protected by an acid labile group, X is OH, CN, OC(O)R 13 , C(O)OR 13 , OR 13 , N(R 13 ) 2 , where R 13 is a linear or branched or cyclic aliphatic hydrocarbyl group containing 1 to about 12 carbons atoms and optionally at least one carbon atom of said hydrocarbyl contains 1, 2, or 3 fluorine atoms; and said oligomer having a weight average molecular weight (Mw) of less than about 3,000 as measured by Gel Permeation Chromatography.