Ladder polymers with instrinsic microporosity and process for production thereof
US8686104B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2009 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Oct 16, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polymer of formula (I): where: n is an integer from 10 to 5,000; m is an integer from 10 to 5,000; Ar1 and Ar3 are the same or different and are residues derived from a tetra-hydroxy aromatic monomer, the tetra-hydroxy aromatic monomer being wherein R is the same or different and is H or a C1-C8 alkyl, C2-C8 alkenyl or C3-C8 cycloalkyl group; and, Ar2 and Ar4 are the same or different and are residues derived from a tetra-halogenated aromatic monomer, the tetra-halogenated aromatic monomer being wherein X is F, Cl or Br, and R1 and R2 are the same or different and are wherein y is an integer from 1 to 8; with the proviso that when Ar1 is the same as Ar3 and Ar2 is the same as Ar4, R1 and R2 are not both —CN is useful as a material for gas separation, vapor separation, adsorbents or catalysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.