US 12,435,171 B2
Curable compositions and low tack, self-adherent adhesives prepared therefrom
Brendan T. Mcgrail, Phoenixville, PA (US); Michael A. Bailey, Aston, PA (US); and Mahendra Christopher Orilall, Downingtown, PA (US)
Assigned to Arkema France, Puteaux (FR)
Appl. No. 16/500,178
Filed by Arkema France, Colombes (FR)
PCT Filed Mar. 21, 2018, PCT No. PCT/EP2018/057179
§ 371(c)(1), (2) Date Oct. 2, 2019,
PCT Pub. No. WO2018/184847, PCT Pub. Date Oct. 11, 2018.
Claims priority of provisional application 62/481,298, filed on Apr. 4, 2017.
Prior Publication US 2021/0115179 A1, Apr. 22, 2021
Int. Cl. C08F 283/00 (2006.01); B65D 33/18 (2006.01); C09J 151/08 (2006.01)
CPC C08F 283/008 (2013.01) [B65D 33/18 (2013.01); C09J 151/08 (2013.01)] 19 Claims
 
1. A curable composition, comprising:
a) at least one acrylate-functionalized urethane oligomer which, in homopolymerized form, has a glass transition temperature less than 0° C.;
b) at least one polymethacrylate-functionalized monomer comprising ethoxylated bisphenol A dimethacrylate which, in homopolymerized form, has a glass transition temperature of at least 20° C.;
c) optionally, at least one free radical initiator;
wherein the acrylate-functionalized urethane oligomer a) and the polymethacrylate-functionalized monomer b) are present in the curable composition in amounts effective to provide a weight ratio of acrylate-functionalized urethane oligomer a): polymethacrylate-functionalized monomer b) of from about 4:1 to about 7:1, and, if any hydrocarbon tackifier is present, the curable composition comprises not more than 5 weight % hydrocarbon tackifier, based on the total weight of the curable composition and when cured provides a low tack, self-adherent adhesive.