Thermoplastic molding compositions exhibiting improved melt flow properties
US4778855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1986 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Dec 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aromatic carbonate resin composition comprising: PA1 (i) at least one aromatic carbonate resin; and PA1 (ii) a copolyetherester comprised of a multiplicity of long chain ester units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being comprised of the reaction products of a dicarboxylic acid or its derivative and a poly(alkylene oxide)glycol, and said short chain ester units being comprised of the reaction products of a dicarboxylic acid or its derivative and at least one low molecular weight diol. The compositions contain an amount of said copolyetherester effective to improve the melt flow or processability of the aromatic carbonate resin. The instant compositions may optionally contain an impact modifying amount of at least one impact modifying compound. The instant compositions are useful in the preparation of extruded or molded shaped articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.