Polyester compositions which comprise tetramethylcyclobutanediol and ethylene glycol for calendering
US11447601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Dec 2, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/521
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Calendered films or sheets obtained from a composition comprising at least one polyester which has the L* color value of greater than 90 and comprises terephthalic acid residues, optional aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; glycol component comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and ethylene glycol residues; a catalyst/stabilizer component which comprises titanium atoms, manganese atoms, phosphorous atoms; fillers; release additives and does not comprises tin atoms. Calendered films or sheets can be used in a wide range of applications including packaging, pool liners, graphic arts, transaction cards, security cards and others.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.