Methods of making pressure sensitive adhesive compositions

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United States of America Patent

PATENT NO 11760822
APP PUB NO 20180086867A1
SERIAL NO

15563385

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Abstract

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Disclosed is a method comprising: a) dispersing a first monomer mixture comprising least one least monomer, the first monomer mixture having a total glass transition temperature (Tg) in the range of from −10° C. to −65° C. with a surfactant and an initiator in an aqueous medium; b) when the first monomer mixture is completely dispersed, adding a second monomer mixture comprising at least one monomer, the second monomer mixture having a Tg at least 20° C. greater than the Tg of the first monomer mixture, to the aqueous medium; c) when the second monomer mixture is completely dispersed, adding a third monomer mixture comprising at least one monomer, the third monomer mixture having a Tg in the range of from −25° C. to 50° C.; and d) forming a polymer with the first, second, and third monomer mixtures. Also disclosed is a pressure sensitive adhesive comprising the polymer formed by this method.

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Patent Owner(s)

Patent OwnerAddress
ROHM AND HAAS COMPANY100 INDEPENDENCE MALL WEST PATENT DEPARTMENT PHILADELPHIA PA 19106

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Einsla, Melinda L Royersford, US 11 30
Griffith,, Jr William B North Wales, US 15 33
Nedwick, Paul Lansdale, US 10 272
Patrick, Steven R Douglassville, US 1 0

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