Barrier coating of an elastomer and a dispersed layered filler in a liquid carrier

US6087016A · kind A · utility

Assignees

• INMAT, INC. · US
• MICHELIN RECHERCHE ET TECHNIQUE S.A. · CH

Inventors

• Carrie A. Feeney · Bound Brook, US
• Michele Farrell · Bethlehem, US
• Klaus Tannert · Wuppertal, DE
• Harris A. Goldberg · Colonia, US
• Mengshi Lu · North Plainfield, US
• Michael D. Grah · Greenville, US
• William G. Steiner · Simpsonville, US
• Paul Winston · Greenville, US

Key dates

• Filing date: Jun 8, 1998
• Grant date: Jul 11, 2000
• Expiry date: Jun 8, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/20
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Barrier coating mixtures contain in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio of polymer (a) to filler (b) is between 20:1 and 1:1. Coated articles, which are rigid or flexible and elastomeric, and free-standing films and membranes, which are flexible and elastomeric, are produced using the barrier coating mixtures.