Process for the extrusion of compositions comprising polypropylene, polyvinyl alcohol and a polypropylene-polyvinyl alcohol adhesive
Patent
·
OSTI ID:5991175
This patent describes a process for extruding a composition comprising polyvinyl alcohol, a polypropylene-polyvinyl alcohol adhesive and a plypropylene prepared with a high activity polymerization catalyst. The improvement consists of utilizing polypropylene having from about 50 to about 5000 ppm by weight of hydrotalcite incorporated therein to substantially eliminate gel formation.
- Assignee:
- Shell Oil Co., Houston, TX
- Patent Number(s):
- US 4822547
- OSTI ID:
- 5991175
- Country of Publication:
- United States
- Language:
- English
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