Title:
CROSS-LINKED POLYPROPYLENE RESINS, METHOD OF MAKING SAME AND ARTICLES FORMED THEREFROM
Document Type and Number:
WIPO Patent Application WO2005111125
Kind Code:
A3
Abstract:
A foamed polymeric composition contains polypropylene and polyethylene components. The composition may have a gel content of about 10 to about 95 wt.%, per ASTM D 2765-01, method A, a density of about 16 kg/m3 to about 640 kg/m3 and a tensile elongation of at least about 200% at 150 °C per ASTM-1708-02a, speed D. Such a composition can be produced by adding an activatable foaming agent to a base resin that contains polypropylene and polyethylene components and silane functional groups, reacting the functional groups to cause cross-linking to a gel content of about 10% to about 95%, and foaming the cross-linked base resin. Alternatively, a composition may be made by adding an activatable foaming agent to the base resin, irradiating the base resin to cross-link to the stated gel content, and foaming the cross-linked base resin. Articles may be made by molding, shaping or forming such compositions.
Inventors:
SIMPSON SCOTT S (US)
SVOBODA PETR (US)
SVOBODA PETR (US)
Application Number:
PCT/US2005/016515
Publication Date:
May 04, 2006
Filing Date:
May 09, 2005
Export Citation:
Assignee:
WORLD PROPERTIES INC (US)
SIMPSON SCOTT S (US)
SVOBODA PETR (US)
SIMPSON SCOTT S (US)
SVOBODA PETR (US)
International Classes:
C08J9/00; C08J9/10; C08L23/10; C08L23/08; (IPC1-7): C08J9/00; C08L23/08; C08J9/10
Foreign References:
| EP1323779A1 | 2003-07-02 | |||
| US5929129A | 1999-07-27 |
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