Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1990-11-27
1992-07-14
Foelak, Morton
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428521, 521 71, B32B 2732, C08J 928, C08J 930
Patent
active
051301911
ABSTRACT:
A gas barrier film-surfaced foamed sealant composition, especially useful for application to mine stoppings and other geological formations, is derived from a foamed sealant-forming medium comprising an aqueous elastomeric latex binder such as a styrene-butadiene rubber (SBR) latex, a particulate filler such as clay, a gelling agent such as ammonium sulfamate and a gaseous foaming agent such as air dispersed therein. The foamed sealant possesses a gas-impervious barrier film or coating on its exposed surface, e.g., one obtained from the aforesaid sealant-forming composition but which has not been foamed or frothed.
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BASF Corporation
Chipaloski Michael R.
Foelak Morton
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