US 12,187,924 B2
Polyorganosiloxane having poly(meth)acrylate groups and methods for the preparation and use thereof
Jodi Mecca, Midland, MI (US); Nanguo Liu, Midland, MI (US); Eric Joffre, Midland, MI (US); Randy Schmidt, Midland, MI (US); Beth Kelley, Midland, MI (US); Tim Mitchell, Midland, MI (US); James Walker, Midland, MI (US); Wesley Sattler, Collegeville, PA (US); Bryan McCulloch, Collegeville, PA (US); and Tzu-Chi Kuo, Midland, MI (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Dow Silicones Corporation, Midland, MI (US)
Filed by Dow Silicones Corporation, Midland, MI (US); and Dow Global Technologies LLC, Midland, MI (US)
Filed on Apr. 25, 2023, as Appl. No. 18/306,312.
Application 18/306,312 is a continuation of application No. 17/299,537, granted, now 11,697,714, previously published as PCT/US2020/022526, filed on Mar. 13, 2020.
Claims priority of provisional application 62/818,131, filed on Mar. 14, 2019.
Prior Publication US 2023/0312835 A1, Oct. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09J 183/10 (2006.01); C08G 77/08 (2006.01); C08G 77/12 (2006.01); C08G 77/20 (2006.01); C08G 77/442 (2006.01); C09J 7/38 (2018.01); C08G 77/00 (2006.01)
CPC C09J 183/10 (2013.01) [C08G 77/08 (2013.01); C08G 77/12 (2013.01); C08G 77/20 (2013.01); C08G 77/442 (2013.01); C09J 7/38 (2018.01); C08G 77/70 (2013.01); C09J 2301/302 (2020.08); C09J 2301/414 (2020.08); C09J 2483/00 (2013.01)] 12 Claims
 
1. A curable composition comprising:
I) a polyorganosiloxane having both aliphatically unsaturated groups and poly(meth)acrylate groups, wherein the polyorganosiloxane comprises unit formula: [R3w(R5—S—R″)(OR4)(2-w)Si—O1/2]p[R3v(R5—S—R″)(OR4)(1-v)Si—O2/2]q[(R5—S—R″)Si—O3/2]k (R6R72SiO1/2)r(R72SiO2/2)s(R6R7SiO2/2)t(R73SiO1/2)u, where each subscript w is independently 0, 1, or 2, each subscript v is independently 0 or 1, each R3 is an independently selected monovalent hydrocarbon group; each R4 is an independently selected alkyl group; each R5 is an independently selected divalent hydrocarbon group, each R″ is independently a (meth)acrylate polymer or copolymer, each R6 is an independently selected aliphatically unsaturated monovalent hydrocarbon group, each R7 is an independently selected monovalent hydrocarbon group free of aliphatic unsaturation, subscript p≥0, subscript q≥0, subscript k≥0, a quantity (p+q+k)≥1, subscript r≥0, subscript s≥0, subscript t≥0, subscript u≥0, a quantity (r+t)≥1, and a quantity (p+q+k+r+s+t+u) is sufficient to provide a molecular weight of at least 50 kDa to the polyorganosiloxane;
II) an organosilicon crosslinker having, per molecule, at least 3 silicon bonded hydrogen atoms; and
III) a hydrosilylation reaction catalyst.