Process for core-shell impact modifiers and impact modified thermoplastic composition with enhanced hydrolytic resistance
US9068036B2 · kind B2 · utility
3Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2011 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jun 30, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/003
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for producing impact modifiers, impact modified thermoplastic molding compositions and in particular impact modified polycarbonate or polycarbonate/polyester blends having improved resistance to degradation. More particularly the present invention relates to a process for producing polymeric impact modifiers with a core-shell structure made by a multistage process comprising a control and adjustment if necessary of the pH value before and during the recovery step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.