Chemical Stabilization of Poly(vinyl chloride) by Prior Reaction with Di(n-butyl)tin Bis(n-dodecyl mercaptide)

Thioglycolic Acid

“…Unlike other stabilizers, tin mercaptide, or the mercaptan that is formed after the HCl reacts with the mercaptide, can react with the allylic chlorine to produce a sulfide (47), thus eliminating the labile chlorine groups and stopping the unzipping.…”

Auxiliary Mechanism for Transfer to Monomer during Vinyl Chloride Polymerization

“…Implications for PVC Thermal Stability. Stability data obtained for several model substances (8,9,29) indicate that the EB and MB structures are unlikely to initiate the thermal degradation of PVC. The chloroallyhc chain ends (Al and A2) also are not so unstable that one needs to regard them as thermally labile sites (30,31).…”

Principles of Stabilization

“…[14][15][16]212 Rockett 16 has demonstrated in detailed studies that formation of the reaction products of RSnCl 3 and SnCl 4 from R 2 SnY 2 stabilizer is an exception and it occurs only when Sn−C bonds are (C 6 H 5 ) 2 SnCl 2 + HCl cleaved because of the presence of, for instance, phenyl rings. [14][15][16]212 Rockett 16 has demonstrated in detailed studies that formation of the reaction products of RSnCl 3 and SnCl 4 from R 2 SnY 2 stabilizer is an exception and it occurs only when Sn−C bonds are (C 6 H 5 ) 2 SnCl 2 + HCl cleaved because of the presence of, for instance, phenyl rings.…”