Process for recycling of supported or contaminated PVC
US5232606A · kind A · utility
4Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Apr 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for recovering PVC from a material including PVC and one or more non-PVC components, in which the material is mixed with a sufficient amount of a plasticizer at an effective temperature, preferably in the range of 100.degree.-200.degree. C., to give a PVC: plasticizer ratio such that the PVC and plasticizer form a mixture which is a liquid at that temperature so that the liquid PVC/plasticizer can be separated from the non-PVC component or components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.