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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Low temperature initiators for improving the rubber phase volume of HIPS formulations. Are you a distributor who is interested in being listed here?
For example and without limitation, the color of the polymer composition may be assessed using a colorimeter. The chromacity dimensions a and b give understandable designations of color as follows:. Initiators, sometimes referred to as accelerators, are compounds that function as the source of free radicals to enable the polymerization of styrene. In such embodiments, CSL may interact with the antioxidant and inhibit its oxidation by the metallic stearate thereby preventing the production of CFCs.
In such an embodiment, the CIA may be introduced to the reaction mixture at a reactor upstream of and prior irganx contacting the metallic stearate. In an alternative embodiment, the CIA may be introduced to the polymerization process at some time subsequent to the dissolution of the elastomer. For example irgsnox without limitation, CSL or other CIA may be included in a reaction mixture or component comprising an antioxidant prior to the inclusion of an oxidizing agent such as a metallic stearate.
Accordingly, the scope of protection is not itganox by the jrganox set out above but is only limited by the claims which follow, that scope including all equivalents of the subject matter of the claims. Please send your question! We should be obliged if you would forward fuller details of the range together with your current price-list quoting terms for overseas delivery and terms of cooperation.
US USA1 en The disclosures of all patents, patent applications, and publications cited herein are hereby incorporated by reference, to the extent that they provide exemplary, procedural or other details supplementary to those set forth herein.
Thank you for your enquiry and you will be contacted soon. The polymerized product effluent from the first reactor irganoz be referred to herein as the prepolymer. The results of the color measurements are presented in Table 1. Organic polymeric materials stabilized with acylated hydroxy acid type compounds. Solution polymerization refers to a polymerization process in which the monomers and polymerization initiators are dissolved in a non-monomeric liquid solvent at the beginning of the irganos reaction.
In some embodiments, CSL is present in the reaction mixture prior to the addition of all the components required for production of a CFC. It is also effective in various adhesive, sealant and latex applications.
In such embodiments, the final antioxidant concentration in the HIPS originating from the elastomer may be in the range of from 80 ppm to ppm, alternatively from 80 ppm to ppm, alternatively from 80 ppm to ppm.
Over-based forms such as those that limit the level of acid may also be employed.
In such embodiments, the CIA may be introduced to the composition prior to the addition of an urganox to inhibit or prevent CFC formation. In an embodiment, the polymerization reaction is carried out in a reactor system comprising a plurality of reactors.
The Hunter calorimeter uses an opponent-color scale that proved measurements of color in units of approximate visual uniformity.
This type of interaction is believed to accelerate the oxidation of the antioxidant species to a highly-colored quinone-type structure. In some embodiments, the styrenic polymer composition may comprise an elastomer, and the resultant polymeric composition may be a HIPS.
The polymerization process can be either batch or continuous.
Antioxidant Irganox , CAS# Supplier | China Baoxu
The method of claim 1 wherein the oxidizing agent is present in an amount of from 50 ppm to ppm. Disclosed herein is a method of improving the color of a high impact polystyrene comprising preparing a reaction mixture comprising styrene, elastomer and at least one antioxidant, and introducing to the reaction mixture a color improving additive prior to the addition of any oxidizing agents to the reaction mixture.
Improved methods of making styrenic polymeric compositions and methods of irgqnox same. In an embodiment, a mold release agent such as for example ZnSt may be present in the reaction mixture in the range of from ppm to ppm, alternatively from ppm to ppm, alternatively from ppm irgajox ppm. Additionally the Hunter colorimeter measures the yellowness index or YI. In an alternative embodiment, the CIA may be incorporated into the reaction mixture that is to be fed to the polymerization reactor i.
The 152 demonstrate a reduction in the yellow index values and reduced b values for HIPS comprising CSL regardless of the elastomer or initiator package used. Irgaanox rubber having hydrophlilic radical for outsole of shoes, rubber composition comprising the same, and method for manufacturing the same.
Such HIPS contain an elastomeric phase that is embedded in the polystyrene matrix resulting in the composition having an increased impact resistance. In an embodiment, the CIA may also be present in a reactor receiving urganox recycle stream comprising an elevated level of antioxidants, such as described previously herein.
In yet another embodiment, the polymerization reaction may be carried out in a plurality of reactors with each reactor having an optimum temperature range. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the embodiments as set forth in the appended claims.
In an embodiment, the styrenic polymer composition is HIPS comprising a conjugated diene irganlx as the elastomer.
Such elastomer-reinforced polymers are commonly referred to as impact modified or high impact polystyrene HIPS while a styrene homopolymer may be referred to as general-purpose polystyrene GPPS.