Pressure-sensitive adhesives based on preferentially...

Details Pressure-sensitive adhesives based on preferentially... Pressure-sensitive adhesives based on preferentially...

C - Chemistry, Metallurgy

09

J

C09J 109/00 (2006.01) C09J 7/02 (2006.01) C09J 107/00 (2006.01) C09J 121/00 (2006.01) C09J 153/00 (2006.01) C09J 153/02 (2006.01)

Patent

CA 2078225

A pressure sensitive adhesive of a mutually immiscible first elastomer (styrene-butadiene block copolymer) exhibiting a first glass transition temperature and a second elastomer (e.g., a styrene- isoprene-styrene block copolymer) exhibiting a second glass transition temperature greater than the first is tackified by a tackifying system comprising tackifier preferentially miscible with the second elastomer to provide a dynamic mechanical spectrum plot of tangent delta versus temperature in °C showing two separate and distinct glass transition temperature peaks. The mixture exhibits excellent processability and ambient and low tem- perature adhesive properties.

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