Free-flowing coated rubber particles, methods for their production and use

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United States of America Patent

PATENT NO 9683334
SERIAL NO

14713699

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Abstract

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Disclosed are free-flowing particles. These free-flowing particles include: (a) a rubber particle, and (b) a coating deposited over at least a portion of the rubber particle, wherein the coating includes: (1) a polyurethane-urea resin that is a reaction product of a reaction mixture comprising: (i) a polyol having a number average molecular weight of 1800 to 12,000; (ii) an aromatic diamine; (iii) a polyisocyanate; and (iv) a catalyst for the reaction between hydroxyl groups and isocyanate groups; and (2) a solid particle anti-clumping agent. Also disclosed are methods of making and using such free-flowing particles and synthetic turf structures that include an infill of such free-flowing particles.

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Patent Owner(s)

Patent OwnerAddress
COVESTRO LLC1 COVESTRO CIRCLE PITTSBURGH PA 15205

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harasin, Stephen J Morgan, US 22 253
Robinson, Michael S Rocky Face, US 5 14
Wellman, Michael T Moundsville, US 15 121

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