Anti-yellowing composition
AssigneeArgus Chemical Corporation
InventorsMichio Ito, Yoshimitsu Numajiri, Seiji Kimura, Tetsuo Sekiguchi
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Abstract
An anti-yellowing additive is provided for environmentally acceptable stabilized vinyl chloride polymer compositions from which arsenic, beryllium, cadmium, lead, mercury, and thallium are substantially excluded, comprising at least one overbased sulfonate or phenolate compound of lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, titanium, aluminum, zirconium, or tin, and a 1,3-diketone compound having 5 to 30 carbon atoms, which is a cyclic or open-chain 1,3-diketone or a lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, aluminum, tin or zirconium salt thereof.
Claims17
An anti-yellowing additive for minimizing the yellowing tendency when heated at 175.degree. C. of environmentally acceptable stabilized vinyl chloride polymer composition from which arsenic, beryllium, cadmium, lead, mercury, and thallium are substantially excluded, comprising in combination (A) at least one overbased metal phenolate or sulfonate compound of at least one of the metals lithium, sodium, potassium, magnesium, calcium, strontium, and barium;
- and (B) for each part by weight of overbased metal compound 0.01 to 1 part by weight of a cyclic or open chain 1,3-diketone compound having 5 to 30 carbon atoms, or a lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, aluminum, tin, or zinconium, salt thereof.
Dependencies are inferred from the claim text.