Global Patent Index - EP 1045760 A1

EP 1045760 A1 2000-10-25 - POLYOLEFIN/FILLER FILMS HAVING INCREASED WVTR AND METHOD FOR MAKING

Title (en)

POLYOLEFIN/FILLER FILMS HAVING INCREASED WVTR AND METHOD FOR MAKING

Title (de)

POLYOLEFIN-FÜLLSTOFF FOLIER MIT HOHER WASSERDAMPFDURCHLÄSSIGKEIT UND VERFAHREN ZU DEREN HERSTELLUNG

Title (fr)

FEUILS CHARGES EN POLYOLEFINE PRESENTANT UNE VITESSE ACCRUE DE TRANSMISSION DE VAPEUR D'EAU ET LEUR PROCEDE DE FABRICATION

Publication

EP 1045760 A1 (EN)

Application

EP 97935261 A

Priority

  • US 9713578 W
  • US 69110496 A

Abstract (en)

[origin: WO9805501A1] Films, made of polyethylenes and fillers, and articles made therefrom greater WVTR than previously available films based on conventional Zeigler-Natta based polyethylenes. The polyethylenes are produced in a metallocene-catalyzed production process. The films may be made by a cast film process, and may be made in widely varying filler content, generally polyethylene to filler ratios of 30/70 to 70/30. The metallocene based polyethylenes when combined with filler also permit the extrusion of thinner films leading to lighter weight and softer films. The m-polyethylenes utilized for making such films typically have a Composition Distribution Breadth Index above 50 %, a Mw/Mn below 3, and a Mz/Mw below 2.

IPC 1-7 (main, further and additional classification)

B32B 31/12; B32B 27/12

IPC 8 full level (invention and additional information)

B29C 55/00 (2006.01); B32B 27/20 (2006.01)

CPC (invention and additional information)

B32B 27/20 (2013.01); B29C 55/005 (2013.01); B29K 2023/06 (2013.01); B29K 2023/0641 (2013.01); B29K 2023/083 (2013.01); B29K 2995/0068 (2013.01)

Citation (search report)

See references of WO 9805501A1

Designated contracting state (EPC)

AT BE CH DE DK FI FR GB IT LI NL SE

EPO simple patent family

WO 9805501 A1 19980212; AU 3824597 A 19980225; CA 2262364 A1 19980212; EP 1045760 A1 20001025; US H1955 H 20010403

INPADOC legal status


2004-08-04 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040128

2002-09-18 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020805

2001-05-30 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: EXXONMOBIL CHEMICAL PATENTS INC.

2000-10-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990219

2000-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK FI FR GB IT LI NL SE