Stabilizers containing high purity mono-octyltin compounds
A heat stabilizer composition comprising a) at least one mono-octyltin compound (n-Oc)Sn(T) 3 having a purity greater than 85 wt %; and b) at least one di-methyltin compound (Me) 2 Sn(T) 2 having a purity greater than 85 wt %.
1. A heat stabilizer composition comprising:
a) at least one mono-octyltin compound (n-Oc)Sn(T) 3 having a purity greater than 85 wt %; and
b) at least one di-methyltin compound (Me) 2 Sn(T) 2 having a purity greater than 85 wt %, wherein T is selected from mercaptoacetate esters, 2-ethylhexylmercaptoacetate esters, iso-octylmercaptoacetates, iso-butylmercaptoacetates, mercaptoacetate, carboxylates, maleates, diketonates, or alcoholates, and the (n-Oc)Sn(T) 3 /(Me) 2 Sn(T) 2 ratio ranges from 10/90 to 90/10.
2. The heat stabilizer composition of claim 1 , wherein T is 2-ethylhexyl mercaptoacetate.
3. The heat stabilizer composition of claim 1 , wherein the (n-Oc)Sn(T) 3 /(Me) 2 Sn(T) 2 ratio ranges from 10/90 to 60/40.
4. A stabilized chlorine-containing polymer compound comprising a chlorine-containing polymer and a heat stabilizer composition, the heat stabilizer composition comprising:
a) at least one mono-octyltin compound (n-Oc)Sn(T) 3 having a purity greater than 85 wt %; and
b) at least one di-methyltin compound (Me) 2 Sn(T) 2 having a purity greater than 85 wt %, wherein T is selected from mercaptoacetate esters, 2-ethylhexylmercaptoacetate esters, iso-octylmercaptoacetates, iso-butylmercaptoacetates, mercaptoacetate, carboxylates, maleates, diketonates, or alcoholates, and the (n-Oc)Sn(T) 3 /(Me) 2 Sn(T) 2 ratio ranges from 10/90 to 90/10.
5. The stabilized chlorine-containing polymer compound of claim 4 wherein the chlorine-containing polymer is PVC.
6. A process comprising blending a chlorine-containing polymer and a heat stabilizer composition comprising:
a) at least one mono-octyltin compound (n-Oc)Sn(T) 3 having a purity greater than 85 wt %; and
b) at least one di-methyltin compound (Me) 2 Sn(T) 2 having a purity greater than 85 wt %, wherein T is selected from mercaptoacetate esters, 2-ethylhexylmercaptoacetate esters, iso-octylmercaptoacetates, iso-butylmercaptoacetates, mercaptoacetate, carboxylates, maleates, diketonates, or alcoholates, and the (n-Oc)Sn(T) 3 /(Me) 2 Sn(T) 2 ratio ranges from 10/90 to 90/10.
7. The heat stabilizer composition of claim 1 wherein (n-Oc)Sn(T) 3 is mono-octyltin tris(2-ethylhexyl mercaptoacetate) and (Me) 2 Sn(T) 2 is dimethyltin bis(2-ethylhexyl mercaptoacetate).
8. The heat stabilizer composition of claim 1 wherein the purity of the mono-octyltin compound (n-Oc)Sn(T) 3 is greater than 90 wt %.
9. The heat stabilizer composition of claim 1 wherein the purity of the mono-octyltin compound (n-Oc)Sn(T) 3 is greater than 90 wt % to 99 wt %.
10. The heat stabilizer composition of claim 8 wherein the purity of the mono-octyltin compound (n-Oc)Sn(T) 3 is in the range of 92 to 99 wt %.
11. The heat stabilizer composition of claim 1 wherein the purity of the di-methyltin compound (Me) 2 Sn(T) 2 is greater than 90 wt %.
12. The heat stabilizer composition of claim 1 wherein the purity of the di-methyltin compound (Me) 2 Sn(T) 2 is greater than 90 wt % to 99 wt %.
13. The heat stabilizer composition of claim 11 wherein the purity of the di-methyltin compound (Me) 2 Sn(T) 2 is in the range of 92 to 99 wt %.
14. The heat stabilizer composition of claim 7 wherein the ratio of mono-octyltin tris(2-ethylhexyl mercaptoacetate)/dimethyltin bis(2-ethylhexyl mercaptoacetate) ratio ranges from 20/80 to 50/50.