Thermoplastic composition with balanced chemical resistance and impact properties
US10590240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Feb 1, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic composition comprising, based on the total weight of the thermoplastic composition, 5 to 30 wt. % of a poly(arylene ether-sulfone); and 50 to 95 wt. % of a polycarbonate component comprising a poly(carbonate-siloxane) and optionally a polycarbonate homopolymer; wherein a sample of the composition has a notched Izod impact value of greater than or equal to 30 kJ/m2; a tensile yield strength retention of 80% and higher after exposure of an ISO tensile bar for 24 hours to sunscreen under 0.5% strain compared to a non-exposed reference; and an elongation at break retention of 80% and higher after exposure of an ISO tensile bar for 24 hours to sunscreen under 0.5% strain compared to a non-exposed reference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.