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
Camera body, and camera system
5-lipoxygenase-activating protein (FLAP) inhibitors
Integrated circuit packaging system with heat slug and method of manufacture thereof
Minimizing mismatch during compensation
Under bump passive components in wafer level packaging
Profile and template based dynamic portable user workflow
Inspection tool for top guides of a boiling water reactor
  Randomly Featured Patents
Electromagnetic discharge apparatus
Silyl-linked polyamidoamine and their preparation
Modified sloping test tube
Direct printing method utilizing dot deflection and a printhead structure for accomplishing the method
Method and apparatus for detecting an operating voltage level in an integrated circuit
Electron source and image-forming apparatus
Door and lock support
MOSFET structure and method of fabricating the same
Information recording apparatus
Rolling contact member and rolling bearing