Molding composition having improved impact strength
US5821321A · kind A · utility
15Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Sep 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G81/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic molding composition having improved impact strength and a process for its preparation are disclosed. The structure of the resinous component of the composition contains carbonate structural units, polyester structural units and lactone-siloxane structural units conforming to ##STR1## wherein m is 1 to 90, n is 5 to 300, R is an alkyl or a phenyl radical, p is 2 to 12 and q is 2 to 20. The preparation of the resinous component entails reactive blending in the presence of a transesterification catalyst of polycarbonate, (co)polyester and a lactone siloxane copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.