Patent · US Active

Acid-functional copolymer coatings for polymeric substrates

US11802188B2 · kind B2 · utility

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0References

20Claims

0Family size

Assignee

Michelman, Inc. · US

Inventors

Freddy Enrique Boscan Guerra · Recklinghausen, DE
Robin Cooper · Arlon, BE
Guillaume Putod · Arlon, BE
Rymma Sushko · Goeblange, LU

Key dates

Filing date	Jun 12, 2019
Grant date	Oct 31, 2023
Priority date	—
Expiry date	May 26, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2425/06
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Embodiments of the present disclosure provide a coated film structure including a substrate layer, an overcoat layer, and at least one intermediate layer disposed between the substrate layer and the overcoat layer. The substrate layer includes a polymer film substrate, the overcoat layer includes an acid-functional copolymer, and the at least one intermediate layer includes aluminum oxide. The coated film structure has an oxygen transmission rate of less than about 3.00 cm3/m2/day at 50% relative humidity and 23° C. as measured in accordance with ASTM D3985. Further, the coated film structure has a water vapor transmission rate of less than 2.50 g/m2/day at 90% relative humidity and 37.8° C. as measured in accordance with ASTM E-398.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.