Comb polymer
AssigneesCommissariat A L'energie Atomique Et Aux Energies Alternatives, Universite Grenoble Alpes, Centre National De La Recherche Scientifique
InventorsLionel Picard, Thomas Clement, Patrice Rannou
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Abstract
The present invention relates to a comb polymer comprising a main chain formed from 1-ethenyl- and/or 1-allyl-2,3,4,5,6-pentafluorobenzene monomers and polymeric side chains grafted in the para position of the pentafluorophenyl groups, in which said polymeric side chains are linked to said main chain by an oxygen atom, the molar grafting rate of polymeric side chains being greater than or equal to 50%. It also relates to a method for the preparation of such a comb polymer.
Claims16
A comb polymer comprising a main chain consisting of monomeric units formed from 1-ethenyl- and/or 1-allyl-2,3,4,5,6-pentafluorobenzene monomers and polymeric side chains grafted in a para position of pentafluorophenyl groups,
- wherein the polymeric side chains are linked to the main chain by an oxygen atom, and the polymeric side chains have a molar grafting rate of greater than or equal to 50%, and
- wherein the main chain has a number-average degree of polymerization of greater than or equal to 50.
A method for preparing a comb polymer, comprising a main chain formed from 1-ethenyl- and/or 1-allyl-2,3,4,5,6-pentafluorobenzene monomers and polymeric side chains grafted in a para position of pentafluorophenyl groups, wherein the polymeric side chains are linked to the main chain by an oxygen atom, and the polymeric side chains have a molar grafting rate of greater than or equal to 50%, the method comprising:
- (i) providing a polymer formed from 1-ethenyl- and/or 1-allyl-2,3,4,5,6-pentafluorobenzene monomers, known as PPFS type polymer, intended for forming the main chain of the comb polymer;
- and
- (ii) forming the polymeric side chains in a para position of a proportion of the pentafluorophenyl groups of the monomer units of the PPFS type polymer.
Dependencies are inferred from the claim text.