US 12,012,500 B2
Low free 2-mercaptoethanol ester and uses thereof
Kevin John Ross, Rockwood (CA); Gene Kelly Norris, West Chester, OH (US); and Jeremy Dunlap, Walton, KY (US)
Assigned to PMC Organometallix, Inc., Mount Laurel, NJ (US)
Filed by PMC ORGANOMETALLIX, INC., Mount Laurel, NJ (US)
Filed on Dec. 28, 2020, as Appl. No. 17/135,594.
Application 17/135,594 is a continuation of application No. 16/554,275, filed on Aug. 28, 2019, abandoned.
Claims priority of provisional application 62/878,040, filed on Jul. 24, 2019.
Claims priority of provisional application 62/723,943, filed on Aug. 28, 2018.
Prior Publication US 2021/0188768 A1, Jun. 24, 2021
Int. Cl. C08K 5/58 (2006.01); C07C 319/12 (2006.01); C07C 319/28 (2006.01); C07C 323/12 (2006.01); C08K 5/00 (2006.01); C08K 5/36 (2006.01); C08K 5/37 (2006.01); C08K 5/57 (2006.01); C08L 27/06 (2006.01)
CPC C08K 5/58 (2013.01) [C07C 319/12 (2013.01); C07C 319/28 (2013.01); C07C 323/12 (2013.01); C08K 5/0016 (2013.01); C08K 5/36 (2013.01); C08K 5/37 (2013.01); C08K 5/57 (2013.01); C08L 27/06 (2013.01); C08L 2201/08 (2013.01)] 10 Claims
 
1. A method of using a Low Free 2-MercaptoEthanol Ester (LFMEE) that is obtained through removal of 2-MercaptoEthanol from a standard 2-MercaptoEthanol Ester, wherein the resulting LFMEE have residual 2-Mercaptoethanol below 1.0 wt % to enhance thermal performance of alkyl tin thioglycolate ester stabilizers, wherein the standard 2-MercaptoEthanol Ester is formed by a reaction of 2-mercaptoethanol with C16-C18 fatty acid, the method comprising:
blending LFMEE with the alkyl tin thioglycolate ester stabilizer,
wherein the LFMEE and stabilizer are combined in a ratio ranging from 5 wt % LFMEE:95 wt % stabilizer to 25 wt % LFMEE:75 wt % stabilizer.