Adhesive polyethylene compositions and multi-layer laminated films using the same
US6210765A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1997 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jan 9, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a specific adhesive polyethylene composition comprising [1] a modified ethylene/.alpha.-olefin copolymer resin or elastomer obtained by modifying a specific ethylene/.alpha.-olefin copolymer resin or elastomer, each of which comprises ethylene and an .alpha.-olefin of 3 to 20 carbon atoms, with an unsaturated carboxylic acid or anhydride, ester, amide, imide or metallic salt derivative of a unsaturated carboxylic acid thereof, [2] an unmodified ethylene/.alpha.-olefin copolymer resin and/or an unmodified ethylene/.alpha.-olefin copolymer elastomer and [3] a tackifier. Also disclosed is a multi-layer laminated film of 3 or more layers in which a layer of the above composition is interposed between an ethylene polymer layer and either a polyamide resin layer, an ethylene/vinyl alcohol copolymer layer or a layer of a mixture of polyamide resin and ethylene/vinyl alcohol copolymer. The adhesive polyethylene composition shows excellent adhesion strength to ethylene polymers, polyamide resins and ethylene/vinyl alcohol copolymers, high heat-sealing strength and heat resistance. The multi-layer laminated film shows excellent strength, heat resistance and gas barrier propertie…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.