Preparation of styrene-polymer and polyolefin micro-bits
US4427157A · kind A · utility
31Cited by
28References
14Claims
0Family size
Inventor
Key dates
| Filing date | May 19, 1980 |
| Grant date | Jan 24, 1984 |
| Priority date | — |
| Expiry date | May 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is the preparation of micro-bits of expanded styrene-polymers and of expanded polyolefins by comminuting the styrene-polymer or polyolefin in a particular combination of comminuting steps in a suitable comminutor that can provide that combination of steps and in the presence of water as a cooling agent. The polymer micro-bits, which are produced as an aqueous slurry, may be rendered dry-to-the-touch by vacuum filtration followed by passage through a filter press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.