Stabilization of methacrylic polymers against sterilizing radiation
US5258423A · kind A · utility
13Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1993 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | May 12, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2/0035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to methacrylic polymer compositions which may be used to form plastic products which have increased resistance to discoloration by sterilizing radiation, such as gamma or electron beam irradiation. The compositions, free from conventional ultraviolet stabilizers, contain .alpha.-hydroxyacids or esters thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.