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
Biphotonic photosensitizers, nanoparticles containing the same and their use as drugs
Distortion estimation for quantized data
Method of using N-thio compounds for oligonucleotide synthesis
Quantum dot template for fast and simultaneous detection of different infectious agents
Expression of dirigent gene EG261 and its orthologs and paralogs enhances pathogen resistance in plants
Per-request control of DNS behavior
  Randomly Featured Patents
System and method for adjusting power amplifier output power in linear dB steps
Real-time passive detection of humidity using vanillin
Rear load magazine assembly
Method and system for flexible channel path identifier assignment
Bag gripper and spreader for form, fill and seal bagging machine
Thermal head for thermal recording or thermal transfer recording and method of manufacturing the same
Method of making dual phase graphite cylinder liner
Rose plant
Unscreening of stored digital halftone images