Barrier based fuel resistant binder
OwnerG. Mohammed Memoninventor
Life of this patent
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Abstract
A fuel resistant binder is characterized by the addition of a carrier curing agent to a modified, unmodified or emulsified asphalt material formed of a mixture of hot, cold or emulsified asphalt and carrier and activator materials. The carrier curing agent preferably is a polyurethane moisture curing solution. A cross-linking material and aggregate are also mixed with the binder to form a material suitable for patching cracks and holes in pavement and the like. The activator assists the polymer material in linking with the asphalt while the carrier prevents the formation of gel or lumps within the asphalt. The carrier curing agent resists the penetration of fuel into the binder.
Claims14
A method for making a fuel resistant binder, comprising the steps of
- (a) mixing a modifier material with asphalt to form an asphalt mixture;
- (b) mixing a carrier material with an activator material to form a carrier slurry, said carrier and activator materials having similar gravity properties;
- (c) mixing said carrier slurry with said asphalt mixture to produce a modified asphalt material which has improved rheological, separation and solubility characteristics;
- (d) mixing a cross-linking agent with said modified asphalt;
- and
- (e) mixing a carrier curing agent with said asphalt material to produce a binder material which is fuel resistant, said carrier curing agent comprising a polyurethane moisture curing solution and at least one of methylene bisphenyl isocyanate and anhydrides.
A fuel resistant binder, comprising
- (a) asphalt;
- (b) a granular modifier material;
- (c) an activator material for activating the asphalt and modifier material to link the asphalt and modifier material to produce a modified asphalt product with improved rheological, separation and solubility characteristics;
- (d) a carrier material for preventing formation of gel in the modified asphalt product, said activator and carrier materials having similar gravity properties;
- (e) a cross-linking agent;
- and
- (f) a carrier curing agent which renders said modified asphalt product fuel resistant, said carrier curing agent comprising a polyurethane moisture curing solution and at least one of methylene bisphenyl isocyanate and anhydrides.
Dependencies are inferred from the claim text.