Use of nuclear aromatic sulfonic acid esters for stabilizing thermoplastic polycarbonates against the effect of gamma-rays
US5274009A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 25, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic molding composition is disclosed containing a polycarbonate resin and PA1 (i) 0.1 to 10.0 percent of a polyalkylene oxide corresponding to formula (I) ##STR1## in which R represents H, C.sub.1-6 alkyl, tetrahydropyranyl or a silyl radical, PA2 R' represents H or C.sub.1-6 alkyl and PA2 x is an integer of 1 to 100, and PA1 (ii) 0.1 to 10 percent of an aromatic compound which contains at least one sulfonic acid ester substituent, said percent being relative to the weight of said polycarbonate. The composition which is resistant to the effects of gamma radiation is suitable for the preparation of sterilizable medical instruments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.