Low free 2-mercaptoethanol ester and uses thereof
AssigneePMC Organometallix, Inc.
InventorsKevin John Ross, Gene Kelly Norris, Jeremy Dunlap
Life of this patent
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Abstract
A novel Low Free 2-MercaptoEthanol Ester has been used to prepare Alkyl Tin Reverse Ester Stabilizers as well as used to enhance the thermal performance of those Alkyl Tin Reverse Ester Stabilizers or Alkyl Tin Thioglycolate Stabilizers or Alkyl Tin Mercaptides for PVC applications where odor during PVC compounding, processing, or of the final PVC article has prevented widespread use of Alkyl Tin Reverse Ester Stabilizers.
Claims10
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.
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 reverse ester stabilizers, wherein the standard 2-MercaptoEthanol Ester is formed by a reaction of 2-mercaptoethanol with C16-C18 fatty acid, the method comprising steps of:
- blending LFMEE with the alkyl tin reverse 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.
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 mercaptide and carboxylate stabilizers, wherein the standard 2-MercaptoEthanol Ester is formed by a reaction of 2-mercaptoethanol with C16-C18 fatty acid, the method comprising steps of:
- combining LFMEE with the alkyl tin mercaptide and carboxylate 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.
Dependencies are inferred from the claim text.