Resources Contact Us Home
Shock absorbing underlayment for artificial playing surfaces

Image Number 3 for United States Patent #5605721.

The present invention is directed to an underlayment composition for an artificial playing surface comprised of a butadiene rubber, such as polybutadiene or styrene-butadiene that is commercially available as recycled polycord tires that have been granulized. An inorganic-base moisture-retaining agent such as vermiculite or perlite is also included in the composition in addition to a binder comprised of a mixture of isocyanate polyurethane and an inorganic acid. The present invention also provides a method of making the present composition. The method comprises the steps of mixing thoroughly granulized particles of butadiene rubber in a mixing container, mixing an inorganic-based moisture-retaining component with the butadiene rubber, mixing an acid having a pH .ltoreq.3 with the butadiene rubber and the inorganic-based moisture-retaining component, and mixing an isocyanate polyurethane with the butadiene rubber, the inorganic-based moisture-retaining component and the acid. Finally, the present invention also provides a method of using the present composition which comprises the steps of applying the composition over a conventional foundation base and laying an artificial turf over the underlayment composition.

  Recently Added Patents
External preparation composition for skin comprising ginseng flower or ginseng seed extracts
Consistent retention and disposition of managed content and associated metadata
ESD protection circuit and ESD protection device thereof
Systems, methods and apparatus for payment processing
Method and system for facilitating micropayments in a financial transaction system
High pressure refolding of protein aggregates and inclusion bodies
Using storage cells to perform computation
  Randomly Featured Patents
Bioreactor with plurality of chambers for conditioning intravascular tissue engineered medical products
Method of preparing C3-sensitized erythrocytes
Rip fence for cutting machine
Nozzle for feeding combustion providing medium into a furnace
Routing of an emergency cellular telephone call
Surface pattern for a footwear sole
Unimolecular segment amplification and sequencing
Adaptive demagnetization compensation for a motor in an electric or partially electric motor vehicle