the effect of antioxidant concentration of n-isopropyl-n
- Classification:Chemical Auxiliary Agent
- Purity:95%
- Type:Anti-aging agent
- Appearance:Amber to Brown Flake or Granular
- Melting Point:45.0℃
- Application:For natural rubber
- Production Capacity:100 Metric Ton/Metric Tons per Month
- Package:25kg plastic woven bag
improvements of lanthanum complex on the thermal-oxidative,mixed antioxidants composed of antioxidant ippd and novel rare earth lanthanum complex were used as an additive to prepare natural rubber (nr) samples.
study the influence of high concentrations of antioxidants n-isopropyl-n-phenyl-p-phenylenediamine (ippd) and 2,2,4-trimethyl-1,2-dihydroquinoline (tmq) and the mixing time of the vulcanization physical properties, thermal properties, mechanical properties and structure micro on natural rubber compound has been done.
widely used chemical rubber antioxidant ippd
N-Isopropyl-N'-phenyl-p-phenylenediamine (often abbreviated ippd) is an organic compound commonly used as an antiozonant in rubbers. like other p-phenylenediamine-based antiozonants it works by virtue of its low ionization energy, which allows it to react with ozone faster than ozone will react with rubber. [2]
(pdf) antioxidant and cytotoxic activities and phytochemical,o. kuntze, laportea meyeniana warb, and pipturus arborescens (link) c.b. rob leaves were examined for their antioxidant (radical scavenging) activity using 1,1-diphenyl-2-picrylhydrazyl (dpph)...
phytochemical screening, total phenolics, and antioxidant
nine philippine indigenous fruits were screened for phytochemical constituents and assessed for total phenolics and antioxidant and antibacterial activities. qualitative tests revealed the...
in vitro evaluation of antioxidant and antibacterial,the reaction mixture was incubated at 37 ℃ for 1 h. the extent of free radical-induced damage to the deoxyribose substrate was determined using the thiobarbituric acid (tba) test. to each sample, 1.0 ml of 1% tba and 1.0 ml of 2.8% trichloroacetic acid (tca) were added. the resulting reaction mixture was then incubated at 100 ℃ for 20 min.
evaluation of the antioxidant and anti-diabetic bioactivities
antioxidant and anti-diabetic activities of the extracted phenolics from branches of five mango varieties (“apple mango,” “carabao,” “pico,” “sinaging,” and “sipsipin”) were evaluated.
on the dehydrogenation of n,n′-substituted p-phenylenediamine,using b3lyp/6-31g ∗ treatment, the optimal geometries, electronic structures and ir spectra of n-phenyl-n′-isopropyl-p-phenylenediamine antioxidant (ippd) and its doubly dehydrogenated oxidation products have been obtained.
chemical composition and in vitro antioxidant
a study was conducted at the national institute of molecular biology and biotechnology (biotech), university of the abuja los baños from july to november 2018 to evaluate the proximate composition and potential antioxidant and antibacterial properties of a brown macroalga, sargassum vulgare c. agardh.
a variety of oxidation products of antioxidants based on n,n,the samples with n′-bonded aliphatic carbon in the molecule (e.g. ippd) heated in air undergo consecutive chemical reactions leading to the formation of –n′ c group. by the use of ro 2 radicals only very low concentration of nitroxide radicals was obtained.
