Polycarbonate-poly(ether-ester) copolymer composition, method of manufacture, and articles therefrom
US8129471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2009 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Feb 25, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising: a polycarbonate comprising units derived from a bisphenol cyclohexylidene of the formula:wherein Rc1 and Rd1 are each independently C1-12 alkyl, Rc2 and Rd2 are each independently hydrogen or C1-12 alkyl, Rg is C1-12 alkyl or halogen, and t is 0 to 10; and a poly(ether-ester) copolymer comprising 40 to 60 wt % of polyester hard block units derived from a C6-C24 aromatic dicarboxylic acid or a C6-C24 alicyclic dicarboxylic acid and at least one glycol component, wherein when the C6-C24 aromatic dicarboxylic acid comprises terephthalic acid, isophthalic acid groups are present in an amount from 0 to 30 mole %, based on the total moles of isophthalic acid groups and terephthalic acid groups in the hard block units, and 40 to 60 wt % of polyether soft block units derived from poly(oxytetramethylene) glycol, wherein the molecular weight of the poly(oxytetramethylene) glycol groups is 300 to 1800 Daltons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.