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US 4,360,120 AGranted
Sealing compositions
AssigneeW. R. Grace & Co.
InventorsDavid N. Samuel, Kenneth M. Sinnott
Life of this patent
Estimating the term…
Abstract
Glass beads having a particle size of 1 to 200 microns are included as part or all of the filler in a sealing composition suitable for sealing container ends and which may be made by dispersing or dissolving solid styrene butadiene or other rubbery polymer and filler, and optionally also containing a tackifying resin, in a liquid medium.
Claims6
A container having a closure sealed to it by a seal that includes a gasket formed of a composition comprising rubbery polymer in which is dispersed filler including an effective amount of crush resistent glass beads having a particle size of about 1 to about 200 microns.
Dependencies are inferred from the claim text.