Chemically embossed metallocene polyethylene foam
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United States of America Patent
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-
Oct 31, 2000
Grant Date -
N/A
app pub date -
Dec 7, 1998
filing date -
Dec 7, 1998
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A textured metallocene polyethylene foam sheet suitable for use in a floor covering is made using a highly co-activated azodicarbonamide package which blows the metallocene polyethylene effectively. The preferred co-activators are zinc oxide and urea. The textured surface of metallocene polyethylene foam is formed by a chemical embossing process which utilizes a liquid triazole having an alkyl moiety as a foam-expansion inhibitor. The triazole is dissolved in a non-polar solvent to form the foam inhibitor. The preferred inhibitor is a hydrocarbon which may be halogenated.
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