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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Do you want a quotation or have a question about ‘Irganox ‘? For form I Fig. The sample was heated slowly. Stearyl 3- 3,5-Di-tert-butylhydroxyphenyl propionate;Stearyl 3- 3,5-Di-tert-butylhydroxyphenyl propionate;ctadcyl-3,5-di-tert-butylhydroxyhydrcinnamate Application Notes: In a previous paper, 26 the aging iganox of a catheter after a discharge nitrogen plasma treatment was studied.
Many additives such as antioxidants AO can indeed bloom 12—15 that is to say they can migrate through the polymer bulk to the surface, exudate and crystallize on it. We estimated the transition temperature using the following relationship, which was used quite successfully 107 other authors: AFM is proved to be a powerful method for evidencing the slow speed phase transitions.
Irganox® by BASF Dispersions & Resins – Paint & Coatings
This wider melting range might result from a premelting process which occurs because of the presence iragnox impurities in the compound using the rate of melting of the sample, the purity analysis by DSC indicated a purity of Stearyl 3- 3,5-Di-tert-butylhydroxyphenyl propionate;Stearyl 3- 3,5-Di-tert-butylhydroxyphenyl propionate;ctadcyl-3,5-di-tert-butylhydroxyhydrcinnamate. I am satisfied with their products quality, pricing and customer service.
The sample was then heated up to The enthalpy of fusion of the form III which melt at lower temperature than forms I and II was greater irvanox those of the two other forms Table 1. Irganox an irhanox primarily used to stabilize various polymers, especially polyamides. This may be the high-temperature stable form before melting; however, as the forms I and II have very close enthalpies of fusion, it is thus not trivial to conclude about a monotropic or enantiotropic transition between them.
Same phenomenon was observed for the melting of the other forms which began at around Isotherms were realized during hours at different temperatures between 42 and This kind of effect of the probe at a nanoscale was observed by Perkins et al. Our innovative products also help manufacturers in the adhesives, nonwovens and fiber bonding industries irganpx functional and performance demands.
Spectra of form I and melt powder are given as references.
In our case we were interested in the polymorphism of polymer additives, which is a much less studied field, 9—11 but which might have an impact on. The company allows additional tests when necessary and the commercial support is helpful an fast.
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As 107 consequence, two samples with form III were evaluated by using two relevant heating rates as deduced from the DSC experiments. A before melting B at the beginning of melting C for an almost melt needle.
It is indeed well known that surface properties will condition the device biocompatibility and the bioadhesion on it. The relationship between form I and form II, is more difficult to establish because their enthalpies of fusion were very close. As evidenced 1706 Fig. It allows to distinguish between the crystallized AO regions from the rest of the sample: Increasing the temperature of several degrees had a deep impact on the phase transformation kinetics: However our data tend to prove that form II is converted into form I before form I melts.
The heating rate used was a quick one till the form III melted. I would applaud your continues support in same manner to achieve organisation goals in coming future.
Transition might be thus induced only locally on the AFM scanned zone. The enthalpy of fusion of form II is a little higher than that of form I and its melting point a little lower, what would be consistent with the fact that form I is the stable form at krganox temperature. In general, personally speaking, I am satisfying with your performance in our needs and I am sure that we will continue our cooperation.
Our former DSC experiments revealed that the phase transitions endured by the studied samples are highly dependent on the heating rates: We normally respond within 2 hours. For slow heating Fig. Depending on the polymorph that crystallizes, the impact on surface properties and leaching might be different.