Recovery of high-quality polycarbonate from polycarbonate scrap
US4212774A · kind A · utility
18Cited by
6References
7Claims
0Family size
Inventor
Key dates
| Filing date | Apr 30, 1979 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Apr 30, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the recovery of aromatic, high-molecular weight, thermoplastic polycarbonates from polycarbonate scrap, it being possible for the polycarbonate scrap to be either in the pure form as transparent naturally-occurring material, or mixed together with organic and, especially, inorganic dyestuffs and/or other additives, or in the form of a blend with other thermoplastic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.