C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 153/02 (2006.01) C08F 8/04 (2006.01) C08F 297/04 (2006.01)
Patent
CA 2155710
It has been discovered that block copolymers comprising at least two polymer blocks containing a vinyl aromatic hydrocarbon monomer contributed units and at least one polymer block conjugated dime monomer contributed units exhibit desirable adhesive properties. The vinyl aromatic hydrocarbon content [S] of the instant block copolymers is 25% to 60% by weight and the vinyl content of the conjugated dime portion [V] is 30 % to 70 % . The relationship between the vinyl aromatic hydrocarbon content [S] and the vinyl content of the conjugated diene portion [V] satisfies the formula: 75 <= [S] + [V] <= 10Q. According to the instant invention, adhesive compositions may be prepared which contain about 10% to about 50% of the block copolymers, about 20% to about 80% of a compatible tackifying resin; about 10% to about 40% of a platicizing oil; about 0.2% to about 2.5% of various stabilizers and 0% to about 10% of a compatible wax.
Bridgestone/firestone Inc.
Firestone Polymers Llc
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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