Toughened, hydrolysis resistant polycarbonate/polyester blends
US5087665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1989 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Dec 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
It was surprisingly found that a thermoplastic molding composition which contains polycarbonate and polyalkylene terephthalate resins at a particular weight ratio therebetween is rendered improved impact strength and hydrolysis resistance upon the incorporation of an additive amount of high melt flow high density polyethylene therewith. The molding composition of the invention comprise about 20-90 percent of polycarbonate resin, 80-10 percent of polyalkylene terephthalate (preferably PET) and about 3 to 5 percent of a high density polyethylene resin having a specific gravity of 0.94-0.97 and melt flow of 1 to 80 gm/10 min. as determined in accordance with ASTM D 1238.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.