Thermoplastic elastomer containing joint sealing compound

C - Chemistry – Metallurgy – 09 – D

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400/3002

C09D 5/34 (2006.01) C09K 3/10 (2006.01)

Patent

CA 1294724

ABSTRACT OF THE DISCLOSURE Joint sealing compositions based on block copoly- mers of an elastic central block of polybutadiene or polyisoprene with polystyrene grafted thereon, a con- tent of elastomers and solvents, and optionally stan- dard auxiliaries (synthetic thermoplasts, fillers, thixotropicizing agents, adhesion promoters, antiagers and the like). The compositions also contain, based on the composition as a whole, from 0.3 to 25% by weight of a copoloymer of methacrylates of aliphatic monoalco- hols containing from 1 to 4 carbon atoms. The alcohol component contains a calculated average of from 1.5 to 3.0 carbon atoms and the molar proportion of methanol in the alcohol component is at least 25%.

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