Copolyesterimides derived from N,N′-bis-(hydroxyalkyl)-3,3′,4,4′-diphenylsulfonetetracarboxylic diimide and films made therefrom
US9422399B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jun 17, 2014 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Jun 17, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolyester comprising repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (Formula (I)) wherein n=2, 3 or 4, Z is S(═O)2, and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester; and films, fibers, molding compositions or molded articles comprising said copolyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.