Binder of vegetable nature for the production of materials for building and/or civil engineering
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United States of America Patent
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Jul 20, 2010
Grant Date -
Jan 10, 2008
app pub date -
Sep 25, 2007
filing date -
Apr 8, 2003
priority date (Note) -
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Abstract
A binder for the production of a layer for road works or civil engineering comprises, with respect to the total weight of the binder: (a) 2 to 98% in weight of at least one purely natural or modified natural resin, of vegetable origin, having a softening point measured of 30 to 200.degree. C.; (b) 98 to 2% in weight of at least one oil of vegetable origin having a viscosity at 25.degree. C. of 50 mPas to 1000 Pas, (c) the binder having: (c1) either a penetrability at 25.degree. C., of 20 to 300 1/10 mm and a softening point of 30 to 75.degree. C., (c2) or a penetrability at 15.degree. C., of 300 to 900 and a viscosity at 60.degree. C., and (d) the binder being exempt of any natural or synthetic elastomer and of any thermoplastic polymer.
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