Cold applied joint sealant

Details Cold applied joint sealant Cold applied joint sealant

C - Chemistry, Metallurgy

09

K

400/1602

C09K 3/10 (2006.01) C08L 95/00 (2006.01)

Patent

CA 1206667

-17- ABSTRACT A cold applied joint sealant usable for both portland cement and asphaltic concrete pavements, which comprises an asphalt/urethane formulation resulting from the mixture of a liquid butadiene polymer, containing predominantly primary terminal hydroxyl groups, with a urethane reactant of di- or polyisocyanate. The sealant has low urethane content and cures to provide a low modulus, high penetration, with 85%- 95% resilience and zero flow. An initial set time of less than about 120 minutes is achieved, which permits vehicular traffic to be accommodated thereover soon after application.

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