Pressure sensitive adhesive
AssigneeRalf Korpman Associates, Inc.
InventorsRalf Korpman, Vera Korpman, Michael Korpman, Dennis Korpman
Life of this patent
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Abstract
This invention relates to a novel pressure sensitive adhesive formed of a liquid and solid rubber which is substantially resin free. Preferably the adhesive is formed of a weight ratio of solid rubber to liquid rubber of about 1:0.5 to about 1:7. These adhesives exhibit improved adhesion in cold weather and oily surface applications and other properties. The pressure sensitive adhesives can be used in health care, industrial and drug delivery systems.
Claims15
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said liquid rubber is selected from the group consisting of liquid isoprene, liquid isoprene-styrene liquid butadiene-styrene, liquid carboxy terminated isoprene, liquid hydroxyl terminated isoprene and liquid hydrogenated isoprene.
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1.7 wherein said solid rubber is selected from the group consisting of polymerized styrene-butadiene, styrene-isoprene and styrene-ethylene-butylene.
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber is SBR.
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of isoprene.
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of butadiene.
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of ethylene-butylene.
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 and a cross linking agent comprising heat reactive phenolic resins.
Dependencies are inferred from the claim text.