C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 123/16 (2006.01) C09J 7/02 (2006.01) C09J 123/20 (2006.01) C09J 123/22 (2006.01) C09J 123/28 (2006.01) C09J 125/18 (2006.01)
Patent
CA 2165273
A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes a) a rubbery polymer comprising a blend of (i) from about 12% or less by weight of the total composition of an ethylene-propylene-dime terpolymer, (ii) a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, (iii) polyisobutylene, and (iv) a butyl terpolymer, and b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 1000 grams/cm at room temperature, at least 500 grams/cm at 70°C, and supports a static load of at least 300 grams at 70°C.
Briddell Brian Jonathan
Fisher Dennis Keith
Wood James Fredrick
Adco Products Inc.
Gowling Lafleur Henderson Llp
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