Stabilizers for polyvinyl chloride
AssigneeClaremont Polychemical Corporation
InventorJohn W. Brook
Life of this patent
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Abstract
This invention comprises use of polyvinyl resin stabilizers, or alkaline earth metal soap and/or phenolate complexes or solutions with soluble zinc chloride and hydroxy compounds (or other suitable solutions of zinc chloride) and organophosphites. These combinations have not previously been used for this purpose.
Claims33
A stabilizer composition especially adapted for use as a stabilizer for halogenated hydrocarbon resins which consists essentially of at least one alkaline earth metal salt of an organic acidic compound selected from the group consisting of organic carboxylic acids and phenols, zinc chloride dissolved in an organic hydroxyl containing compound, at least one organophosphite and at least one inert organic solvent therefor, the alkaline earth metal to zinc chloride ratio in the composition being from about 1 to 1 to about 4 to 1, and the zine chloride to hydroxyl-containing compound being from about 2 to 1 to about 1 to 20.
A stabilized vinyl chloride resin composition which has incorporated therein at least one alkaline earth metal salt of an organic acidic compound selected from the group consisting of organic carboxylic acids and phenols, zinc chloride in solution in an aliphatic organic hydroxyl-containing compound and at least one organophosphite, the alkaline earth metal to zinc chloride ratio in the composition being from about 1 to 1 to about 4 to 1, and the zinc chloride to hydroxyl-containing compound being from about 2 to 1 to about 1 to 20, the stabilizer components in the resin composition being present in the amounts of 0.03 to 0.3 parts by weight of alkaline earth salt, 0.005 to 0.30 parts by weight zinc chloride, 0.01 to 1.0 parts by weight of organic hydroxyl-containing compound, and 0.00 to 5.0 parts by weight of organophosphite per one hundred parts by weight of vinyl chloride resin.
A stabilizer composition for vinyl chloride resins which consists essentially of a strontium salt of a phenol, zinc chloride dissolved in an aliphatic organic hydroxyl-containing compound having at least one free hydroxyl group, at least one organophosphite, and at least one inert, non-reactive-organic solvent therefor, the strontium to zinc chloride ratio in the composition being from about 1 to 1 to about 4 to 1, and the zinc chloride to hydroxyl-containing compound being from about 2 to 1 to about 1 to 20.
A method of light and heat stabilization for vinyl chloride resins which comprises incorporating therein a composition consisting essentially of at least one alkaline earth metal salt of an organic acidic compound selected from the group consisting of organic carboxylic acids and phenols, zinc chloride dissolved in an organic hydroxyl containing compound, at least one organophosphite, and at least one inert, non-reactive solvent, the alkaline earth metal to zinc chloride ratio in the composition being from about 1 to 1 to about 4 to 1, and the zinc chloride to hydroxyl-containing compound being from about 2 to 1 to about 1 to 20, the stabilizer components in the resin composition being present in the amounts of 0.03 to 0.3 parts by weight of alkaline earth salt, 0.005 to 0.30 parts by weight of zinc chloride, 0.01 to 1.0 parts by weight or organic hydroxyl-containing compound, and 0.00 to 5.0 parts by weight of organophosphite per one hundred parts by weight of vinyl chloride resin.
Dependencies are inferred from the claim text.