Process for the polymerization of acrylonitrile-butadiene-styrene resins
US4239863A · kind A · utility
17Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Jun 28, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/918
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Acrylonitrile-butadiene-styrene (ABS) resins are prepared by the mass or mass-suspension process employing a tertiary-butyl peroxy initiator having a 10-hour half-life between about 50.degree. and 95.degree. C. wherein initial polymerization of up to about 10 weight percent solids is conducted under plug flow conditions. From about 5 to 10 percent conversion to about 40 percent conversion is polymerized with agitation. The remaining polymerization is done with or without agitation. Improved impact resistance is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.