EP0052557A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polypropylene compositions with improved impact resistance
Assignee: Bp Chimie SA
•
Filing: 1981-11-04
•
Granted: —
•
Expires: 2001-11-04
Abstract
Abstract The invention concerns polypropylene compositions with improved impact strength adapted for conversion to finished articles by extrusion drawing, extrusion blow-molding or thermoforming characterized in that they contain: (a) 40 to 98% by weight of isotactic polypropylene (b) 2 to 60% by weight of a copolymer of linear low density polyethylene type with a density of up to 0.935, obtained by copolymerizing a mixture of ethylene and one or more upper alpha-olefins, by a copolymerizing process at a pressure below 4.106 Pa, in the absence of any liquid hydrocarbons.
Inventors
- 👤 Jean Paul Thiersault
- 👤 Jean Claude Roustant
- 👤 Alain Senez
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 10:26
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L23/10; C08L23/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.