Flowable joint sealant for concrete highway

Details Flowable joint sealant for concrete highway Flowable joint sealant for concrete highway

C - Chemistry, Metallurgy

09

K

400/5313

C09K 3/10 (2006.01) C04B 20/10 (2006.01) C04B 41/49 (2006.01) C04B 41/64 (2006.01) C08K 5/5455 (2006.01) C08K 13/06 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1338749

A moisture curable composition which is useful for sealing pavement joints consists essentially of 100 parts by weight of a hydroxyl endblocked polydiorganosiloxane, 55 to 120 parts of non-reinforcing, non-acidic filler wherein at least 40 percent by weight of the filler is treated with calcium stearate, 2.5 to 10 parts of diacetamidosilane, and 1 to 6 parts of aminoxysilicone compound. The composition is self leveling when applied to a horizontal surface and when cured has an elongation of at least 1200 percent, a durometer on the Shore OO scale of from 45 to 75 inclusive, and a modulus at 150 percent elongation of less than 50 pounds per square inch.

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