Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Dye sensitised solar cell
Battery loading and unloading mechanism
Methods, systems, and media for swapping faces in images
Image forming apparatus and job request control method instructed by authenticated users
Information processing apparatus, non-transitory computer-readable recording medium, and information processing method
Egg separator
Compounds with (1 E, 6E)-1,7-bis-(3,4-dimethoxyphenyl)-4,4-disubstituted-hepta-1,6-diene-3,5-d- ione structural scaffold, their biological activity, and uses thereof
  Randomly Featured Patents
Food materials with improved flavor and functionality due to size reduction in a modified atmosphere
Electrical connector receptacle
Terminal for man-machine dialogue with a computer system using plural viewing elements
Tie down
Image forming apparatus and method, and transferring medium cassette
Preemptive multi-tasking with cooperative groups of tasks
Rear portion of a vehicle, toy, and/or replicas thereof
Recording apparatus and method, playback apparatus and method, and recording medium therefor
Prenylcysteine carboxyl methyltransferase, DNA encoding same, and a method of screening for inhibitors thereof
Automotive wheel