Improved pressure sensitive bituminous compositions

Details Improved pressure sensitive bituminous compositions Improved pressure sensitive bituminous compositions

C - Chemistry, Metallurgy

09

J

C09J 195/00 (2006.01) C09J 153/02 (2006.01)

Patent

CA 2078244

A pressure sensitive bituminous composition having improved tack and adhesiveness, comprising: (1) from about 50 to about 87% of a bituminous component; from about 1 to about 15% of a thermoplastic block copolymer, M1, of the A-B-A type, preferably styrene-butadiene- styrene; (3) from about 1 to about 10% of a block copolymer, M2, of the A-B type, preferably styrene- butadiene; and (4) from about 5 to about 50% of a fumed silica. The fumed silica is an active ingredient which absorbs excess oil and improves the tack and adhesiveness of the final composition.

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