| Tire & Rubber Recycling |
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Our number of patents for devulcanizing rubber,
production of EPDM,NBR,SBR, HNBR and CR
compounds, that could potentially revolutionize the
rubber recycling industry in the US, Canada,
Mexico, Brasil, Europe, China, Japan and other countries too.
US Patent 9,624,319 und EP 1232205
Patent CN 2,426,598
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United States Patent Application 20030018118
Microbead coating composition and methods
Kind Code: A1
Novel microbead coating compositions having improved binding properties for
the glass microbeads suspended therein, which compositions also have superior bonding
properties for substrates so as to be resistant to peeling or flaking there from after drying.
These novel binding and bonding properties are unexpectedly produced by the addition
SUMMARY OF THE INVENTION
The present invention relates to providing novel microbead coating compositions having
improved binding properties for the glass microbeads suspended therein, which compositions
also have superior bonding properties for substrates so as to be resistant to peeling or
flaking therefrom after drying. According to the present invention these novel binding and
bonding properties are unexpectedly produced by the addition of microparticles of ground
rubber to microbead coating compositions containing a resinous binder material and,
optionally, other color-enhancing particles such as pigments, glass flakes, metallic flakes,
mica and similar materials as disclosed in co-pending U.S. Ser. No. 09/752,305, discussed
supra. The rubber particles, known as crumb rubber and pelletized rubber are
commercially-available from Spreerelast GmbH, Ardennering, Germany under
the trademark Relaston® MT and DT (devulkanized) having grain or particle sizes
of 100μ, 120μ, 150μ, 160μ, 180μ, and larger. The rubber particles are produced
cryogenicallyby freezing and grinding scrap tire rubber elastomer to the desired grain
size and smooth surface. Particles having a grain size of 150μ or less are preferred
for use in the present compositions. They have the appearance of a powder and are grey
in color.
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