Polyamide antioxidant

Uses Antioxidant for rubbers, SBR, polymers, polyacetals, linear saturated polyesters, PVC, polyolefins, polyamides antioxidant for food-... 

Uses Reducing agent in redox-catalyzed polymerization color stabilizer, modifier, catalyst for polyamides antioxidant intermediate for forming metallic salts used as stabilizers accelerator for org. peroxide catalysts improver of polysiloxane resins free radical promoter in emulsion polymerization promoter in polyester resin curing mfg. of self-extinguishing fibers (reacts with polyester resin and polyolefin) color/odor inhibitor, catalyst for some thermoplastics discoloration inhibitor in PE corrosion inhibitor on thin aluminum surfs. lubricity improver in polyphenyl thioether-based lubricants Manuf./Distrib. Akzo Nobel http //www.akzonobel.com, Ferro http //WWW. ferro. com... 

Uses Feed additive nutrient dietary supplement in table salt as source of dietary iodine catalyst in Sandmeyer reactions cloud seeding heat stabilizer for glass fiber-reinforced polyamides antioxidant/stabilizer... 

Uses Antioxidant for rubbers, SBR, polymers, polyacetals, linear saturated polyesters, PVC, polyolefins, polyamides antioxidant for food-grade polymers in side seam cements for food-contact containers Regulatory FDA 21CFR 175.300, 178.2010 Manuf./Distrib. Ciba Spec. Chems./Plastic Addit. http //www. cibasc. com Trade Name Synonyms Irganox 1098 [Ciba Spec. Chems. Switzerland http //www.cibasc.com, Ciba Spec. Chems./Plastic Addit. http //w. cibasc.com] Lowinox HD 98 [Great Lakes http //www. greatiakeschem. com]... 

Monofunctional, cyclohexylamine is used as a polyamide polymerization chain terminator to control polymer molecular weight. 3,3,5-Trimethylcyclohexylamines ate usehil fuel additives, corrosion inhibitors, and biocides (50). Dicyclohexylamine has direct uses as a solvent for cephalosporin antibiotic production, as a corrosion inhibitor, and as a fuel oil additive, in addition to serving as an organic intermediate. Cycloahphatic tertiary amines are used as urethane catalysts (72). Dimethylcyclohexylarnine (DMCHA) is marketed by Air Products as POLYCAT 8 for pour-in-place rigid insulating foam. Methyldicyclohexylamine is POLYCAT 12 used for flexible slabstock and molded foam. DM CHA is also sold as a fuel oil additive, which acts as an antioxidant. StericaHy hindered secondary cycloahphatic amines, specifically dicyclohexylamine, effectively catalyze polycarbonate polymerization (73). 

Alkylated and alkenated toluenediamines are used as antioxidants (qv) in oils and elastomers (10,53,63—65), as chemical intermediates for polyamides, polyimides, and polyesterimides (53,1) and as epoxy curatives (53,58,66) (see Epoxy resins). 

Diphenylamine antioxidants are also widely used to stabili2e roofing asphalts, lubricating greases, silicone enamels, polyamides, acetal resias, and... 

A few other successful 13C 1-NMR determinations should be mentioned. Hunt et al. [28] used 13C NMR to characterise fractions of extracted analytes of PAG and sorbitan ester samples and identified Irganox 1010. H and 13C NMR have been used to identify the main organic components of a breathable diaper back-sheet as LLDPE and pentaerythritol tetra-octyl ester (PETO) [233]. The equally present AOs Irganox 1010 and Irgafos 168 were not detected without extraction. Barendswaard et al. [234] have reported fully assigned 13C solution spectra of these two antioxidants. Chimas-sorb 944 in a polyamide matrix can be determined by H or 13C 1-NMR using solvents such as formic acid, trifluoroacetic acid or trifluoroethanol [235], Both H and 13C NMR have been used to follow the chemistry of a bis-phenoxidemethylaluminum complex (reaction product of BHT and trimethylaluminum) by exposure in air. Pierre and van Bree [216] also used 13C NMR to... 

Figure 10. Antioxidant evaluation by oxidative polyamide fluorescence from soy lecithin liposomes. Key O, blank , lecithin plus hematin A, lecithin-hematin...

Like the fluorescence, the reducing power and antioxidant activity are not decreased by washing the plate with the usual organic or organic-aqueous solvent combinations. The substance responsible is bound to the polyamide surface. 

The thermal stability of elastomeric polyacetaldehyde could be improved by end-capping the hydroxyl end groups with acetic anhydride in order to prevent chain unzipping. Further stabilization was obtained by adding polyamide as a thermal stabilizer and an aromatic amine antioxidant. 

LTDP is a thiosynergist antioxidant additive to thermo/light-stabilizers (used in combination with phenolic antioxidants) with plasticizing properties used to decompose and neutralize hydroperoxides, formed by the auto-oxidation of polymers, primarily in PE, PP, ABS, polyester, and polyamide. 

Used as an antioxidant and thermostabilizer for polypropylene, polyethylene, impact resistant polystyrene, poly-4-methyl-pentene. Can be used as a stabilizer for natural and synthetic rubber, polyvinyl chloride. A copolymer of acrylonitrile with butadiene and styrene, polyacetals, alkyde resins, polyamides and polyesters. 

Naugard 445 is non-discoloring aromatic amine antioxidant that works synergistically with phosphites and phenolic antioxidants as a thermal stabilizer in polyolefins, styrenics, polyols, hot melt adhesives, lubricants, and polyamides. 

Antioxidant for natural and synthetic rubber, tires, automotive and appliance molded goods, polyamides and carbon black filled olefin formulations for use in geomembranes, wire and cable jacketing, and irrigation piping. 

Use Antioxidant for polypropylene, high-density polyethylene, spandex fibers, polyamides and specialty rubbers. 

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