Glass-reinforced PDMS copolycarbonate resins
US10696803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2016 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Jul 29, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/72
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic composition including a resin phase and 10% to 55%, especially 25% to 45% of glass fibers by weight of the composition is disclosed. The resin phase includes a polysiloxane block copolymer including polydimethylsiloxane blocks and polycarbonate blocks derived from bisphenol A. The resin phase further includes a polycarbonate and has between 2.0 wt % and 10 wt % by weight of siloxane. The thermoplastic composition has (i) a notched Izod impact strength of at least 150 Joules per meter measured at 23° C. according to ASTM D256, (ii) a tensile strength greater than 95 MPa as determined by ASTM D638, (iii) a tensile modulus greater than 10,900 MPa as determined by ASTM D638 and (iv) an unnotched Izod impact strength greater than 775 Joules per meter measured at 23° C. according to ASTM D256.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.