US 12,286,570 B2
Compositions and processes for providing release coatings
Joel E. Goldstein, Cleveland, OH (US)
Assigned to Synthomer Inc., Beachwood, OH (US)
Filed by SYNTHOMER INC., Beachwood, OH (US)
Filed on Aug. 24, 2021, as Appl. No. 17/411,035.
Claims priority of provisional application 63/069,453, filed on Aug. 24, 2020.
Prior Publication US 2022/0056321 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09J 7/40 (2018.01); C09J 11/06 (2006.01)
CPC C09J 7/401 (2018.01) [C09J 11/06 (2013.01); C09J 2431/005 (2013.01); C09J 2433/005 (2013.01)] 6 Claims
 
1. An aqueous composition for release coatings, the aqueous composition having a total solids content of no more than 10 weight percent and comprising:
a) a release polymer component that is free of silicone release polymers and that comprises a release polymer from a monomer of formula (I-a) and which has a weight average molecular weight of 125+75 kg/mol,

OG Complex Work Unit Chemistry
where R1 is H, X is O, R2 is lower alkyl, E is O and R3 is a long chain alkyl group, where the release polymer includes pendent groups of formula (I)

OG Complex Work Unit Chemistry
where X is O or S, E is O or S or NH, R2 is a lower alkyl, Z is a divalent (thio) carbonyl-containing group that further includes two additional heteroatoms bonded to the carbon atom of the (thio) carbonyl, and R3 is a long chain alkyl group; and
b) from 0.75 to 1.25 weight percent, relative to the composition, of dioctyl sulfosuccinate.