Mixtures of additives for organic polymers in granular form
View Patent ↗Mixtures of additives in granular form comprising: one or more stabilizers for organic polymers; one or more organic or inorganic pigments; and/or one or more dyes; obtained by extrusion at a temperature capable of enabling the partial or total melting of the lowest-melting component. The above mixtures can be used in the stabilization and dyeing of organic polymers.
1. A granular mixture consisting essentially of:
(a) one or more stabilizers for organic polymers selected from the group consisting of phosphites, phosphonites, alkylated monophenols, alkylthiomethylphenols, hydroquinones, alkylated hydroquinones, tocopherols, triazine compounds, benzylphosphonates, esters of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid with monohydric or polyhydric alcohols, esters of β-(3,5-dicyclohexyl-4-hydroxyphenyl) propionic acid with monohydric or polyhydric alcohols, esters of 3,5-di-t-butyl-4-hydroxyphenyl acetic acid with monohydric or polyhydric alcohols, amides of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid, ascorbic acid, hydroxylamines, nitrones; plus
(b) one or more of the group consisting of organic pigments and dyes;
(c) and optionally one or more additive selected from the group consisting of plasticizers, lubricants, catalysts, slip agents, optical brighteners, flame-retardants, antistatic agents, blowing agents, calcium carbonate, silicates, talc, kaolin, mica, barium sulfate, metal oxides, metal hydroxides, carbon black, graphite, salts of alkaline metals of fatty acids, and salts of alkaline earth metals of fatty acids;
glued as a mixture by the component having the lowest melting point of said components.
2. The granular mixture according to claim 1 wherein the organic pigments are selected from the group consisting of organic pigments of the azo type, azomethines, anthraquinones, perilenes, dioxazines, thioindigo reds, quinacridones, phthalocyanines, blue indanthroines, carbazoles, isoindolinones, isoindolones, benzimilazolinones, and their metal salts.
3. The granular mixture according to claim 1 wherein the dyes are soluble, or slightly soluble in water.
4. The granular mixture according to claim 1 wherein the dyes are insoluble in water.
5. The granular mixture according to claim 3 wherein the dyes are selected from the group consisting of acid dyes, aminoketones, ketone-imines, methines, nitrodiphenylamines, quinolines, aminonapthoquinones, coumarins, anthroquinones, and azo dyes.
6. The granular mixture according to claim 3 wherein the dyes contain one or more anionic groups.
7. The granular mixture according to claim 3 wherein the dyes are selected from the group consisting of anthraquinones, phthalocyanines, diarylmethane and triarylmethane; methine, polymethine and azomethine; thiazoles, ketone-imines, acridines, cyanines, nitro dyes, quinolines, benzimidazoles, xanthenes, azines, oxazines, thiazines and triazines which have at least one quaternary nitrogen in the molecule.
8. The granular mixture according to claim 1 wherein the dyes are selected from the group consisting of dyes containing sulfur, disperse dyes and vat dyes.
9. The granular mixture according to claim 8 wherein the disperse dyes are selected from the group consisting of nitro dyes, aminoketones, ketone-imines, methines, polymethines, diphenylamines, quinolines, benzimidazoles, xanthene, oxazines, aminonaphthoquinones, and coumarins which do not contain carboxylic acid or sulfonic acid groups.
10. The granular mixture according to claim 6 wherein the anionic groups are selected from the group consisting of carboxylic acid groups; sulfonic acid groups, and their salts.
11. The granular mixture according to claim 1 wherein the at least one or more stabilizers for organic polymers (a) is selected from the group consisting of phosphites, phosphonites, alkylated monophenols, tocopherols, triazine compounds, esters of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid with monohydric or polyhydric alcohols, esters of 3,5-di-t-butyl-4-hydroxyphenyl acetic acid with monohydric or polyhydric alcohols; and
and at least one additive (c) selected from the group consisting of flame-retardants, calcium carbonate, silicates, talc, kaolin, mica, barium sulfate, metal oxides, metal hydroxides, carbon black, graphite, salts of alkaline metals of fatty acids, and salts of alkaline earth metals of fatty acids is present.
12. The granular mixture according to claim 11 wherein the at least one or more of the stabilizers for organic polymers (a) is selected from the group consisting of phosphites, phosphonites, and esters of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid with monohydric or polyhydric alcohols.
13. The granular mixture according to claim 1 consisting essentially of
(a) at least one or more stabilizers for organic polymers selected from the group consisting of phosphites, phosphonites, alkylated monophenols, tocopherols, triazine compounds, esters of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid with monohydric or polyhydric alcohols, esters of 3,5-di-t-butyl-4-hydroxyphenyl acetic acid with monohydric or polyhydric alcohols;
(b) one or more of the group consisting of organic pigments and dyes; and
(c) optionally or more additive selected from the group consisting of calcium carbonate, silicates, talc, kaolin, mica, barium sulfate, metal oxides, metal hydroxides, salts of alkaline metals of fatty acids, and salts of alkaline earth metals of fatty acids is present.