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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Said CIA may be the salt of an organic acid, alternatively an alkali salt of an organic acid, alternatively an alkali salt of lactic acid, alternatively sodium stearoyl lactate, alternatively calcium stearoyl lactate CSL or combinations thereof.
Use of broader terms such as comprises, includes, having, etc. The method of claim 1 wherein the styrene is a substituted styrene, a ring-substituted styrene, a disubstituted styrene, an unsubstituted styrene or combinations thereof. For example and without limitation, the color of the polymer composition may be assessed using a colorimeter. Continuous process including recycle stream treatment for the production irgaanox high impact polystyrene.
Without wishing to be limited by theory, the interaction of an antioxidant such as Irganox with zinc stearate may lead to the formation irganoc a colored adductZn adduct through the irgamox postulated in Equation 1.
Without wishing to be limited by theory, it irgganox in the devolatilizer where secondary reactions leading to CFCs may occur due to the presence of impurities carried back to the reaction process by the recycle stream. In one embodiment, both a metallic stearate e. Contact Now Chat Now. The temperature ranges useful with the process of the present disclosure can be selected to be consistent with the operational characteristics of the equipment used to perform the polymerization.
It is non-staining, non-discoloring, low in volatility, and stable to light and heat. US USA1 en The pilot unit is a full-scale representation of a commercial line.
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Without limitation, examples of suitable aliphatic conjugated diene monomers include C 4 to C 9 dienes such 152 butadiene monomers. In such embodiments, the CIA may function to inhibit CFC formation and may be present prior to the addition of any additional metallic stearates.
For example and without limitation, CSL or other CIA may be included in a reaction mixture or component comprising an antioxidant prior irgsnox the inclusion of an oxidizing agent such as a metallic stearate. The styrenic polymer composition may be a styrenic homopolymer such as a GPPS. Collectively these compounds which may react to produce chromophores are referred to herein as color-forming compounds CFC.
In some embodiments, the styrenic polymer composition is a HIPS and the CIA may be introduced to the polymerization process concomitant with the dissolution of the elastomer. In an embodiment, the styrenic polymer composition comprises an initiator or the byproducts of an initiator reaction. Where numerical ranges or limitations are expressly stated, such express ranges or limitations should be understood to include iterative ranges or limitations of like magnitude falling within the expressly stated ranges or limitations e.
The color formation in the polymer composition may be assessed using any technique known to one of ordinary skill in the art for the assessment of color in a polymeric composition.
The first polymerization reactor may be referred to herein as the prepolymerization reactor. The effectiveness of this product used in a wide range of elastomers is exceptional along with extensive food contact approvals.
I’m interested in your product,if you could send me more data I appreiciate this. In an alternative embodiment, the CIA may be introduced to the polymerization process at some time subsequent to the dissolution of the elastomer. Alternatively, a styrenic polymer composition comprises a polymer of styrene, an elastomer and a CIA.
Muhui Place of Origin: The selection of initiator and effective amount irtanox depend on numerous factors e. In an embodiment, the polymerization reaction is carried out 5120 a reactor system organox a plurality of reactors. For example, in an embodiment wherein the antioxidant is present in the elastomer, while the final concentration in the HIPS reaction mixture may be in the ranges set forth previously, the antioxidant may accumulate to a concentration of from 50 ppm to ppm, alternatively 50 ppm to ppm, alternatively 80 ppm to ppm, in the recycle stream and contribute to the production of CECs.
The present disclosure relates generally to styrenic polymer compositions and more specifically to polystyrene having improved color and methods of making same.
Antioxidant 1520, Irganox 1520, CAS 110553-27-0
The content of such third party sites is not within our control, and we cannot and will not take responsibility for the information or content. In an embodiment, the styrenic polymer composition comprises a polymer of styrene and optionally one or more comonomers.
The method of claim 1 wherein the polystyrene is prepared via a solution polymerization process. Metallic stearate additives are neutralizing agents which may aid in the processing of polymer resins by neutralizing acidic sites as well as aiding mold release. In some embodiments, CSL is present in the reaction mixture prior to the addition of all the components required for production of a CFC. Examples of suitable conjugated diene monomers include without limitation 1,3-butadiene, 2-methyl-1,3-butadiene, 2 chloro-1,3 butadiene, 2-methyl-1,3-butadiene, and 2 chloro-1,3-butadiene.
Examples of additives include without limitation chain transfer agents, talc, antioxidants, UV stabilizers, lubricants, mineral oil, plasticizers and others as known to one ieganox ordinary skill in the art.
For example, during the production of butadiene antioxidants are often included as stabilizers.
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In an embodiment, any irrganox capable of free radical formation that facilitates the polymerization of styrene may be employed. In an embodiment, the styrenic polymer composition may also contain additives to impart desired physical properties, such as, increased gloss or color.
The information presented here was acquired by UL from the producer of the product or material or original information provider. Thus, the claims are a further description and are an addition to the embodiments of the present disclosure. A method of improving the color of a high impact polystyrene comprising: It is also effective in various adhesive, sealant and latex applications.