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
Use of cocoa extract
Poloxamer foamable pharmaceutical compositions with active agents and/or therapeutic cells and uses
Mobile device mode control based on dual mapping of availability (presence) information
Method and apparatus for accessing coconut water
Flexure with insulating layer isolating a portion of a metal substrate
Method for isomerisation of hop alpha-acids using heterogeneous alkaline earth metal based catalysts
Method and apparatus for user selection of advertising combinations
  Randomly Featured Patents
Interchangeable handbag carry system
Trigger lock for fuel pump nozzles
Air compressor
Filter for spray ducts of dental or surgical handpieces
Child's plate
Electron emission device and display device using the same
Mechanism for a chair
Aminobutyric acid fungicides
Plasma torch
Book cover