US 11,773,300 B2
Acrylic adhesive compositions and methods of making same
Joseph B. Binder, Haverford, PA (US); and Hany Necola, Valbonne (FR)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Hass Company, Collegeville, PA (US)
Appl. No. 16/643,257
Filed by Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Jul. 17, 2018, PCT No. PCT/US2018/042433
§ 371(c)(1), (2) Date Feb. 28, 2020,
PCT Pub. No. WO2019/067070, PCT Pub. Date Apr. 4, 2019.
Claims priority of provisional application 62/563,670, filed on Sep. 27, 2017.
Prior Publication US 2020/0255700 A1, Aug. 13, 2020
Int. Cl. C09J 133/04 (2006.01); C09J 7/38 (2018.01); C08F 220/18 (2006.01); C08F 2/22 (2006.01); C08F 212/08 (2006.01); C08F 220/14 (2006.01)
CPC C09J 133/04 (2013.01) [C08F 2/22 (2013.01); C08F 212/08 (2013.01); C08F 220/14 (2013.01); C08F 220/1802 (2020.02); C09J 7/385 (2018.01); C08F 220/1808 (2020.02); C09J 2203/334 (2013.01)] 7 Claims
 
1. An adhesive composition, comprising:
an acrylic copolymer formed from a monomer mixture comprising, based on the total weight of monomers in the monomer mixture,
from 59 to 97.9 weight percent 2-ethylhexyl acrylate;
from 0.1 to 10 weight percent styrene;
from 0 to 25 weight percent methyl methacrylate;
from 2 to 30 weight percent ethyl acrylate, and
from 0.1 weight percent to less than 1 weight percent of an additional polyethylenically unsaturated monomer different from the above, which when the polymer is prepared results in crosslinking;
wherein the ratio of ethyl acrylate to styrene (by weight) is greater than 4.5 to 1.