Tacky adhesive

Details Tacky adhesive Tacky adhesive

1976-05-18

1978-03-21

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08L 9300

Patent

active

040803481

ABSTRACT:
A highly tacky pressure-sensitive adhesive which possesses superior "finger tack" and skin adhesion, as well as the ability to adhere to oily surfaces. The adhesive comprises a thermoplastic component and a resin component and the thermoplastic component consists essentially of about 55-85 parts, preferably about 60-75 parts, of a simple A-B block copolymer wherein the A-blocks are derived from styrene and the B-blocks are derived from isoprene, and about 15-45 parts, preferably about 25-40 parts, of a linear or radial A-B-A block copolymer. The total styrene-derived A-block content of the copolymers is less than 20 percent of their total weight and the A-blocks of the A-B block copolymers constitute about 10-18, preferably about 12-16, percent by weight of the A-B copolymers. The resin component may be conventional.

REFERENCES:
patent: 3239478 (1966-03-01), Harlan
patent: 3325430 (1967-06-01), Grasley
patent: 3441530 (1969-04-01), Bauer
patent: 3519585 (1970-07-01), Miller
patent: 3632540 (1972-01-01), Unmuth
patent: 3649579 (1972-03-01), Gobran

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