Melt process for the synthesis of tin(II) terephthalate
AssigneeGeneral Electric Company
InventorsDouglas G. Hamilton, Christopher M. Hawkins
Life of this patent
Estimating the term…
Abstract
A melt process for the synthesis of poly(metal aromatic esters) resins is provided. The process provides volatile byproducts which can be easily separated from the desired poly(metal aromatic ester) resin product. The poly(metal aromatic ester) resins are particularly useful as polymer additives for the purpose of such things as scavenging traces of water, activating sulphur accelerator crosslinking systems, and producing intumescent and polyester/metal oxide formulations.
Claims13
A melt process for making a poly(metal aromatic ester) resin, comprising:
- (a) reacting ##STR20## to produce ##STR21## wherein M is a divalent metal selected from, Be, Mg, Ca, Sr, Ba, Ra, Sn, Pb, Ge, Hg, Cd, Zn, CU, Ni, Pd, Pt, Co, Rh, Ir, Fe, Ru, Os, Ti, Zr, Hf, Cr, Mo, W, or Mn and X is selected from the group consisting of hydrogen, halogens, amines, nitros and alkyl radicals,
- (b) reacting said ##STR22## to produce ##STR23## (c) reacting said ##STR24## to produce said poly(metal aromatic esters), said poly(metal aromatic esters) comprising units of the formula ##STR25## said R being a divalent aromatic radical, and said R.sup.1 being a monovalent hydrocarbon radical wherein said reactions (a), (b) and (c) and conducted at a temperature sufficient to melt the reactants.
A process for making poly(tin(II) aromatic ester) comprising:
- (a) reacting ##STR28## to produce ##STR29## and H.sub.2 O (b) separating said ##STR30## from said H.sub.2 O (c) reacting said ##STR31## to produce ##STR32## d) separating said ##STR33## e) reacting said ##STR34## to produce poly(tin(II) aromatic ester) comprising units of the formula ##STR35## wherein said reactions (a), (c), and (e) are conducted at a temperature sufficient to melt the reactants.
Dependencies are inferred from the claim text.