Title:
POLYOLEFIN GRAFTED POLY(VINYL ALCOHOL) AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO2004078808
Kind Code:
A3
Abstract:
A process for preparing an olefin polymer grafted poly(vinyl alcohol) polymer, in which an olefin polymer is first treated with a free radical polymerization initiator, a peroxidized olefin polymer material, or ionizing radiation, then grafted with a vinyl ester monomer to form an olefin polymer grafted poly(vinyl ester) polymer, and finally the vinyl ester moieties in the resulting grafted polymer are converted to vinyl alcohol moieties, at a temperature of from 25 to less than 100°C, in a mixed aromatic hydrocarbon/alkanol solvent system. The resulting olefin polymer grafted poly(vinyl alcohol) polymer has improved oxygen barrier properties.
Inventors:
DANG VU A (US)
Application Number:
PCT/IB2004/000526
Publication Date:
March 10, 2005
Filing Date:
March 01, 2004
Export Citation:
Assignee:
BASELL POLIOLEFINE SPA (IT)
DANG VU A (US)
DANG VU A (US)
International Classes:
C08F255/00; C08F255/02; C08L51/06; (IPC1-7): C08F255/02; C08F255/00; C08L51/06
Domestic Patent References:
| WO2002036650A1 | 2002-05-10 |
Foreign References:
| EP0439079A2 | 1991-07-31 | |||
| EP0437808A2 | 1991-07-24 | |||
| GB1113821A | 1968-05-15 | |||
| GB834954A | 1960-05-11 | |||
| EP0584590A1 | 1994-03-02 | |||
| EP0519341A1 | 1992-12-23 | |||
| EP1081161A1 | 2001-03-07 | |||
| EP0522233A1 | 1993-01-13 | |||
| EP0806439A2 | 1997-11-12 |
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