Get instant access to Irganox® L technical datasheet. It is a multifunctional liquid phenolic antioxidant for processing and long-term thermal stabilization. Multifunctional phenolic antioxidant for processing and long-term thermal stabilization of elastomers, plastics and related products. NameMethyl-4,6-bis(octylsulfanylmethyl)phenol,CASProperties: Molecular Fomula:C25H44OS2,Molar Mass,Densityg/cm 3.
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In an alternative embodiment, the CIA may be introduced to the polymerization process at some time subsequent to the dissolution of the elastomer. Contact Now Chat Now. The HIPS that was produced contained 8. The foregoing has outlined rather broadly the features and technical advantages of the present disclosure in order that the detailed description of the embodiments that follows may be better understood.
Key product areas of formulation additives, rheology modifiers, light stabilizers, and antioxidants significantly enhance the BASF product portfolio for these markets. We’re sorry, but the industry you have selected is not currently available in your chosen language. In an embodiment, the CIA may also be present in a reactor receiving a recycle stream comprising an elevated level of antioxidants, such as described previously herein. In other embodiments, the CIA may be introduced to the polymerization reactor at some point downstream of the first polymerization reactor.
Alternatively, a styrenic polymer composition comprises a polymer of styrene, an elastomer having at least one antioxidant, and a CIA. Collectively these compounds which may react to produce chromophores are referred to herein as color-forming compounds CFC. Such HIPS contain an elastomeric phase that is embedded in the polystyrene matrix resulting in the composition ifganox an increased impact resistance. The results of the color measurements are presented in Table 1.
The method irgabox claim 1 wherein the oxidizing agent is a metallic stearate, an initiator, air or combinations thereof. The method of claim 1 wherein the antioxidant is present in an amount of from ppm to 10, ppm. Ms sophie wang Welcome to my shop! For example, during the production of butadiene antioxidants are often included as stabilizers. Examples of additives include without limitation chain transfer agents, talc, antioxidants, UV stabilizers, lubricants, mineral oil, irgganox and others as known to one of ordinary skill in the art.
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A method of improving the color of a high impact polystyrene comprising: The method of claim 1 wherein the polystyrene is prepared via a solution polymerization process. These additives may be included in amounts effective to impart the desired properties. In embodiments wherein the antioxidant is present as part of the elastomer formulation, the amount of antioxidant present during the HIPS polymerization process may increase during the course of the reaction as a result of the accumulation of the antioxidant in other portions of irtanox polymerization reactor.
In an embodiment, a styrenic polymer composition comprises a polymer of styrene and a color improving additive CIA. The method of irgxnox 1 wherein the reaction mixture has a residence time of 0. Antioxidants such as for example IRGANOX may be present in amounts of from ppm to pp, alternatively from ppm to ppm, alternatively from ppm to ppm, alternatively from ppm to ppm.
This website provides links to other websites owned by third parties. In an embodiment, the styrenic polymer composition comprises an initiator or the byproducts of an initiator reaction. In one embodiment, both a metallic stearate e. Glad to serve you! The embodiments described herein are exemplary only, and are not intended to be limiting.
The method of claim 1 wherein the elastomer is a polymer of an aliphatic conjugated diene. In an embodiment, the CIA may be present in amounts of from ppm to ppm, alternatively from ppm to ppm, alternatively from ppm to ppm, alternatively from ppm to ppm.
The method of claim 18 wherein the first reactor vessel is a continuously stirred tank reactor and the second reactor vessel is a plug flow reactor. In an embodiment, the styrenic polymer composition may comprise compounds such as metallic stearates and initiators.
The Hunter calorimeter organox an opponent-color scale that proved measurements of color in units of approximate visual uniformity. The antioxidants may be included in the reaction mixture as an additive or may be present in the commercial formulations of other reagents for use in the production of the styrene polymer composition.