Synonyms: IRGANOX ;IRGANOX WL;Einecs ; ANTIOXIDANT ;ylester,calciumsalt();ANTIOXIDANT (IRGANOX );calciuM. Irganox® Recommended use of the chemical and restriction on use. Recommended use*: stabilizer. Unsuitable for use: This material is. Used as an antioxidant for polypropylene fibers. Offers good processing stability. Provides very high extraction resistance and extreme low volatility.

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Sterically hindered hydroxyphenylalkylphosphonic acid esters and half-esters are disclosed, inter alia, in US-Aand may be illustrated by the following formula:.

R j is isopropyl, tert-butyl, cyclohexyl or cyclohexyl which is substituted by 1 to 3. In particular, light stabilisers or also antioxidants can be added “Plastics Additives Handbook”, Ed. Illustrative examples of cycloalkylidene are cyclopentylidene, cyclohexylidene, cycloheptylidene and cyclooctylidene. Date of ref document: A further group of suitable aliphatic diols comprises the heterocyclic diols disclosed in.

Irganox , CasNo Suqian Ruixing Chemical Co., Ltd. China (Mainland)

R 3 is G r C 2 oalkyl or substituted or unsubstituted phenyl or naphthyl. The amounts and the results obtained are set forth in Table 3. LI Free format text: Ref legal event code: O- N- and S-benzyl compounds, for example 3,5,3′,5′-tetra-tert-butyl-4,4′-dihydroxy- dibenzyl ether, octadecylhydroxy-3,5-dimethylbenzylmercaptoacetate, tris 3,5-di-tert- butylhydroxybenzyl amine, bis 4-tert-butylhydroxy-2,6-dimethylbenzyl dithio- terephthalate, bis 3,5-di-tert-butylhydroxybenzyl sulfide, isooctyl-3,5di-tert-butyl hydroxybenzylmercaptoacetate.

Aromatic diols will be understood as meaning those in which two hydroxyl groups are bonded to one or to different aromatic hydrocarbon radicals.

antioxidant (irganox ) factory – antioxidant (irganox ) manufacturing

Benzylphosphonates, for example dimethyl-2,5-di-tert-butylhydroxybenzylphos- phonate, diethyl-3,5-di-tert-butylhydroxybenzylphosphonate, dioctadecyl-3,5-di-tert- butylhydroxybenzylphosphonate, dioctadecyltert-butylhydroxymethylbenzyl- phosphonate, the calcium salt of the monoethyl ester of 3,5-di-tert-butylhydroxybenzyl- phosphonic acid.

A polyester recyclate comprising a tetracarboxylic dianhydride and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester.

AT Free format text: Oxamides, for example 4,4′-dioctyloxyoxanilide, 2,2′-diethoxyoxanilide, 2,2′-dioc- tyloxy-5,5′-di-tert-butoxanilide, 2,2′-didodecyloxy-5,5′-di-tert-butoxanilide, 2-ethoxy-2′- ethyloxanilide, N,N’-bis 3-dimethylaminopropyl oxamide, 2-ethoxytert-butyl-2′-ethox- anilide and its mixture with 2-ethoxy-2′-ethyl-5,4′-di-tert-butoxanilide and mixtures of ortho- and para-methoxy-disubstituted oxanilides and mixtures of o- and p-ethoxy-disub- stituted oxanilides.

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CH Ref legal event code: Hvdroxylated thiodiphenyl ethers, for example 2,2′-thiobis 6-tert-butylmethyl- phenol2,2′-thiobis 4-octylphenol4,4′-thiobis 6-tert-butylmethylphenol4,4′-thio- bis 6-tert-butylmethylphenol4,4′-thiobis- 3,6-di-sec-amylphenol4,4′-bis- 2,6-dim- ethylhydroxyphenyl disulfide.

The recyclates may also contain minor amounts of other polymers, including polyolefins or PVC. Ca is particularly preferred. The amounts and the results obtained are set forth in Table 1. The invention also relates to polyesters, polyester copolymers or polyester blends and polyester recyclates comprising a tetracarboxylic dianhydride and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester. Use of a mixture comprising a tetracarboxylic dianhydride and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester for increasing the molecular weight of polyester recyclates.

Illustrative examples of unsubstituted or substituted alkylene are methylene, ethylene, phenylmethylene, diphenylmethylene, methylphenylmethylene. Nickel compounds, for example nickel complexes of 2,2′-thio-bis-[4- l,l,3,3-tetra- methylbutyl phenol], such as the 1: This molecular weight increase effects an enhancement of the properties of the polyesters, preferably of those used for injection moulding and of recyclates, especially PET bottle scrap material.

FR Free format text: Aromatic hydroxybenzyl compounds, for example l,3,5-tris 3,5-di-tert-butylhy- droxybenzyl -2,4,6-trimethylbenzene, l,4-bis 3,5-di-tert-butylhydroxybenzyl -2,3,5,6- tetramethylbenzene, 2,4,6-tris 3,5-di-tert-butylhydroxybenzyl phenol.

Oligomeric chain extenders for processing, post-processing and recycling of condensation polymers, synthesis, compositions and applications. R Ref document number: DE Ref legal event code: The temperature will depend on the polyester used.

The mixture is stirred for 20 minutes and then removed from the glass tube.

IRGANOX 1425 WL

Increase in molecular weight of polyester PES. AT Kind code of ref document: The amounts and the results obtained are set forth in Table 4. However, this method is troublesome and, moreover, is highly sensitive to the impurities that may be present in waste material.

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Suitable dicarboxylic acids are linear and branched saturated aliphatic dicarboxylic acids, aromatic dicarboxylic acids and cycloaliphatic dicarboxylic acids. Those skilled in the art will be familiar with these co-stabilisers, which will be chosen in accordance with the specific requirement made of the final product.

Liquid phase polyols which are alkylene oxide adducts of terephthalic esters from recycled polyethylene terephthalate. Preferred tetracarboxylic dianhydrides are those containing aromatic rings.

Metal deactivators, for example N,N’-diphenyloxamide, N-salicylal-N’-salicyloyl hydrazine, N,N’-bis salicyloyl hydrazine, N,N’-bis 3,5-di-tert-butylhydroxyphenyl- propionyl hydrazine3-salicyloylamino-l,2,4-triazole, bis benzylidene oxalyl di- hydrazide, oxanilide, isophthaloyl dihydrazide, sebacoyl bisphenylhydrazide, N,N’-di- acetyladipoyl dihydrazide, N,N’-bis salicyloyl oxalyl dihydrazide, N,N’-bis salicyloyl – thiopropionyl dihydrazide.

Table 2 relating to Examples of this invention addition of tetracarboxylic dianhydride and hydroxyphenylalkylphosphonic acid ester or half-ester shows a marked increase in intrinsic viscosity, thereby indicating an increase in molecular weight.

Very particularly preferred sterically hindered hydroxyphenylalkylphosphonic acid esters and half-esters are. The process may, however, also be carried out in an extruder and also in the presence of air. Derivatives of 2,2,6,6-tetramethylpiperidinol for use as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.

Amorphous polyesters have high transparency, superior toughness and very good resistance to stress-cracking, and can be processed to hollow objects. Table 3 relating to Examples of this invention addition of tetracarboxylic dianhydride and hydroxyphenylalkylphosphonic acid ester or half -ester shows a marked increase in intrinsic viscosity, thereby indicating an increase in molecular weight.