Foil or molded body based on a transparent polymeric mixture
US7034077B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jan 21, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/0815
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a foil or molded body based on a transparent and high frequency weldable polymer mixture containing a) (I) a copolymer of ethylene with about 8 to 60% by weight of comonomers, selected from vinyl esters of saturated C2–C8 carboxylic acids saturated C1–C12 alkylacrylates and methacrylates, optionally with carbon monoxide as termonomer, and/or (II) ethylene homopolymer, ethylene copolymer, propylene homopolymer and/or propylene copolymer with about 8 to 60% by weight of grafted units of unsaturated carboxylic acids, dicarboxylic acids, their esters and/or anhydrides or (III) a mixture of two or more of the above mentioned compounds, independently of their allocation to groups, whereby the polymers or their mixture have a melt index MFI (190° C.; 2.16 kg) of about 0.2 to 15.0 g/10 min and b) a copolymer of ethylene with about 10 to 30% by weight of C3–C12–α-olefin with a melt index MFI (190° C., 2.16 kg) of about 0.2 to 15.0 g/10 min, whereby the material of the foil and of the molded body is partially interlaced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.