Method of deriving polystyrene and polyolefin plastics composite from recycled plastics
US5298214A · kind A · utility
34Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1990 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Oct 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/046
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Polystyrene having a high storage modulus is blended with a polyolefin, and the blend is converted to a mixed melt which is caused to flow and then a cooled and solidified to form a substantially solid two phase composite. The high storage modulus polystyrene provides particularly good results. Especially good properties are achieved at about 35% polystyrene by weight. Either or both components may be recycled materials and may incorporate minor amounts of other plastics as contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.