COMPOSITIONS OF AND METHODS FOR PRODUCING MODIFIED MONOMERS AND POLYIMIDES FOR SOUR MIXED GAS SEPARATION
申请人:Saudi Arabian Oil Company
公开号:US20210309803A1
公开(公告)日:2021-10-07
Compositions of and methods for producing a modified polyimide-containing compound with an alkyl or acyl group, one method including selecting and preparing a polyimide-containing compound to undergo a Friedel-Crafts alkylation or acylation reaction; carrying out the Friedel-Crafts alkylation or acylation reaction on the polyimide-containing compound to bond an alkyl group or acyl group to a reactive site on an aromatic compound of the polyimide-containing compound; cleaving the polyimide-containing compound to produce modified monomers comprising the alkyl group or the acyl group; and using the modified monomers in a reaction to produce the modified polyimide-containing compound, wherein the alkyl group or the acyl group is present in the modified polyimide-containing compound.
[EN] EXTREME HIGH TEMPERATURE STABLE ADHESIVES AND COATINGS<br/>[FR] ADHÉSIFS ET REVÊTEMENTS STABLES À HAUTES TEMPÉRATURES EXTRÊMES
申请人:DESIGNER MOLECULES INC
公开号:WO2020215025A1
公开(公告)日:2020-10-22
The present invention provides curable polyimides with low color that are resistant to long term thermo-oxidative degradation. These materials, which include polyimides that are fully aromatic, are synthesized in anisole and are contemplated for use in high temperature applications such as in the aerospace industry and for use as encapsulants for light emitting diodes that will be exposed to high temperatures.