Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1991-10-11
1995-10-03
Page, Thurman K.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524514, 524524, 524525, A63K 100
Patent
active
054552958
ABSTRACT:
A racetrack surface composition including a synthetic polymer component, a hydrocarbon oil fluid between 25.degree.-90.degree. F., and a particulate material such as sand. The synthetic polymer component is preferably either an elastomer, or an elastomer in combination with non-elastomeric polymer; or generally a mixture of oil soluble and oil dispersible polymer which together with the oil form a binder for the particulates. The racetrack composition readily forms a pad and the cushion portion does not clump or compact but maintains its granular, rakeable quality even at track temperatures above about 130.degree. F. The composition is not adversely affected by wet weather. The invention further includes the addition of carbon black to the racetrack composition in order to improve weatherability. In the event that the racetrack composition is not readily rakeable, the invention teaches the post addition of a rakeability promoter to improve rakeability.
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patent: 4598019 (1986-07-01), Yokoyama
patent: 4792133 (1988-12-01), Hawkins et al.
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patent: 4968024 (1990-11-01), Hawkins et al.
Sellnow, L., "The Race for Safety", The Blood-Horse of Mar. 25, 1989.
Bearden Charles R.
Kottle Sherman
Fastrac Systems, Inc.
Kulkosky P.
Page Thurman K.
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