PBI modification and cross-linking methods
AssigneeWhitefox Technologies Limited
InventorsStephan Rüdiger Blum, Katharina Kleine, Wolfgang Bremser
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Abstract
The present disclosure provides methods for modifying and cross-linking polybenzimidazoles, PBI. In one embodiment, the polybenzimidazole reacts with a compound, which has a halogen and a double bond functionality and which comprises a halogen and an organic group to form modified polymers by means of a nucleophilic substitution of the amine proton of the benzimidazole functionality in a solution, and a functional group is connected via each resulting free double bond and/or the polymers that are thus modified are cross-linked.
Claims7
A method of cross-linking a polybenzimidazole (PBI) having the structure
- wherein the polybenzimidazole reacts in a solution with a compound having a halogen and a double bond functionality of the type
- where X is a halogen and R an organic group through a nucleophilic substitution of the amine protons of the benzimidazole functionality to obtain the modified polymers
- where the resulting free double bonds are connected in each case to a functional group and/or crosslinking of the modified polymers occurs.
Dependencies are inferred from the claim text.