Inflatable stopper

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11345796
APP PUB NO 20200255633A1
SERIAL NO

16862607

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Importance

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Abstract

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The invention relates to a non-crosslinked natural rubber latex composition for an inflatable stopper comprising a homogeneous mixture of: a) natural rubber latex; b) a surfactant; c) an amine based chemical antiozonant; d) possibly ammonia and preferably e) single or double wall electrically conductive nanotubes. The invention furthermore relates to an ozone resistant inflatable stopper comprising non-crosslinked natural rubber latex and fiber reinforcement, the rubber having an ozone resistance according to ISO 1431/1 at 50 pphm concentration ozone at 23±2° C., for the time frame of 48 hours, atmospheric humidity of 55% and strain static exposure of 20% and preferably a surface resistivity lower than 100 GΩ according to DIN EN 60079-32-2 and DVGW G 5621-3 (VP) measured at 1000 V and a maximum relative humidity of 30%.

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Patent Owner(s)

  • J. VAN BEUGEN BEHEER B.V.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Coric, Enver Schiedam, NL 4 1
Van, Beugen Leonard Goudswaard, NL 8 5

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