COMPOSITIONS AND METHODS FOR IMPROVING FLUID-BARRIER PROPERTIES OF POLYMERS AND POLYMER PRODUCTS

摘要

In some variations, this disclosure provides compositions for reducing fluid permeability through a polymer membrane, the composition comprising a polymer (e.g., bromobutyl rubber) and mineral particles (e.g., kaolin particles) including fine particles with particle sizes between about 0.05 μm and about 1 μm and coarse particles with particle sizes between about 3 μm and about 20 μm. Applications for these improved-barrier polymers include tire innerliners, paint and paper coatings, films, adhesives, liners, paints, and hoses, for example. Methods of making and use these polymers are also disclosed.

主权项

1. A composition for reducing fluid permeability through a polymer membrane, said composition comprising a polymer and from about 10 to about 100 parts per hundred of mineral particles, wherein said mineral particles include fine mineral particles with particle sizes between about 0.05 μm and about 1 μm and coarse mineral particles with particle sizes between about 3 μm and about 20 μm, and wherein the weight ratio of said fine mineral particles to said coarse mineral particles is selected from about 0.1 to about 10.