Irganox is a high molecular weight phenolic antioxidant. CAS# Click here for quote or sample. Irganox® highly efficient, non-discoloring, sterically hindered primary phenolic antioxidant stabilizer that protects organic substrates against. Get instant access to Irganox® technical datasheet. It is a highly efficient sterically hindered phenolic primary antioxidant which provides processing and.

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The information presented here was acquired by UL from the producer of the product or material or original information provider. A before melting B at the beginning of melting C for an almost melt needle. The implication of melting of form III needles and its recrystallization into form I on the surface energy was suggested, by hypothesizing that some imperfect small crystals can melt at a little lower temperature than that of the onset melting However these temperatures are only a rough estimation as our enthalpy data may have a quite high standard deviation.

We’re sorry, but the industry you have selected is not currently available in your chosen language. This compound is a phenolic antioxidant currently used in standard polymers; it can bloom on the surface of polymer-based medical devices and its polymorphism might affect the device surface state and thus the biocompatibility. Spectra of form I and melt powder are given as references.

The sample was then heated up to We have been clients of theirs for several years and we have an excellent working relationship. Many additives such as antioxidants AO can indeed bloom 12—15 that is to say they can migrate through the polymer bulk to iganox surface, exudate and crystallize on it.

We normally respond within 2 hours. Typical empirical value for k is 0. From using DSC enthalpy of fusion of the forms, this transition is certainly an enantiotropic relationship between the low temperature stable form III and the form II.


We estimated the transition temperature using the following relationship, which was used quite successfully by other authors: Irganox Worldwide Suppliers of Irganox https: This wider melting range might result from a premelting process which occurs because of the presence of impurities in the compound using the rate of melting of the sample, the purity analysis by DSC indicated a purity of We observed profiles of irgankx adhesion perpendicular to the melting front of the AO crystal.

A band characteristic of form I was detected but only with a small absorbance. When only using classical tools like DSC or FTIR, it is indeed difficult to very early detect changes in structures as they appear at a nano-level on the crystal surface.

The initial AO crystal structure is thus strongly modified during these thermal treatments. Free Shipping for worldwide on order above USD. Using these results and the melting temperature of the forms, we propose an enthalpy H T and ieganox free enthalpy G T diagram Fig.

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After this plasma treatment the polymer surface was more hydrophilic, but there was a hydrophobic recovery of the surface with time: This kind of effect of the probe at a nanoscale was observed by Perkins et al. These changes were particularly well observed in case of very slow heating ramps or isotherms performed between 42 and The greater variation iganox in the enthalpy of fusion for form III could be related to the difficulty of avoiding totally the transitions irgznox described when melting the form III.

The heating rate used was a quick one till the form III melted. Keep it up and wish you all the best for future challenges. 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 general, personally speaking, I am satisfying with your performance in our needs and I am sure that we will continue our cooperation. Irganox an antioxidan primarily used to stabilize various polymers, especially polyamides. We may suppose it is a transition between form II and form I for the following reasons: Depending on the polymorph that crystallizes, the impact on surface properties and leaching might be different.

Clearsynth had helped us not in many critical molecules but as well as some new Developments and Products deliverance, We had a strong belief in Clearsynth Dynamics and Approach towards synthesis and development of New products and Isotopes.

AFM is thus a convenient tool for this research.

Octadecyl DI-tert-butylhydroxyhydrocinnamate | C35H62O3 – PubChem

Polymorphism is not always easy to understand and to predict and its comprehension needs the use and association of different analytical techniques. When the heating was quicker, as iragnox in one of our precedent paper, 13 only the melting of form II was observed.

Received 21st OctoberAccepted 8th December Are you a distributor who is interested in being listed here? As shown by the adhesion measurement, no liquid areas were detected during the first moments of the process images 1—13 from Fig. When the heating rate was lower below 0.

Irganox® by BASF Dispersions & Resins – Paint & Coatings

For a quick heating Fig. Same phenomenon was observed for the melting of the other forms which began at around I am satisfied with their products quality, pricing and customer service. I would applaud your continues support in same manner to achieve organisation goals in coming future. Chemist Analytical Development Lab Co-ordinator.