Blends of polyetherimides, aromatic alkyl methacrylates and polycarbonates
US5248732A · kind A · utility
15Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Jun 1, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aromatic polyetherimides can be blended with aromatic alkyl methacrylate polymers to give transparent, single phase and completely miscible materials at all compositions. Such blends, which exhibit only one glass transition, are endowed with improved workability, ease of processing and toughness compared to the polyetherimide alone as well as improved heat distortion, modulus and tensile strength as compared to the methacrylate alone. Aromatic polycarbonates, which are ordinarily immiscible with aromatic polyetherimides, can be compatibilized into single phase blends after the addition of a polyaromatic alkyl methacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.