- Hindered Phenols are
nothing but a phenolic stabilizers.
- Phenolic stabilizers
are primary antioxidants that act as hydrogen donors.
- A typical manufacturing
process for a hindered phenol antioxidant uses a substituted cresol raw
material for the phenolic ring portion of the molecule, and an aldehyde
raw material for the bridging or connecting group. The batch reaction
takes place in an alcoholic solvent and utilizes an acid catalyst. When
the reaction is complete, the batch is quenched with water and decanted.
Purification steps may include additional water
washes/decants before
the product is slurried with a hydrocarbon solvent, vacuum filtered,
washed with additional solvent, centrifuged and dried.
- Methylation of hindered
phenols, aromatic amines and carboxylic acids with dimethylcarbonate and
a catalytic amount of DMAP is most effective,
and the by-products
are carbon dioxide and methanol.
- Deactivated and
sterically hindered phenols have been acetylated with acetic anhydride
under microwave irradiation and using iodine as catalyst in an
eco-friendly process.
- Hindered phenol
antioxidants, which contain the 2,6-di-tert-butylphenol functional
group, are very effective primary antioxidants.
- The Oxygen Induction
Time (OIT) test is an accelerated aging test that is often used to
predict the long
term stability of hydrocarbon materials including
plastics, rubbers, and adhesives. The OIT can be Studied by Hindered
Phenol Stabilizers in
Natural Rubber and Hot Melt Adhesives.
- The effects of
extracellular application of some sterically-hindered phenols can be
investigated using the patch-clamp technique.
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General
Information & Process
- Antioxidants
- Hindered Phenols
- On the energetics of
phenol antioxidants activity
- Methylation of
Hindered Phenols
- Microwave mediated
solvent-free acetylation of deactivated and hindered phenols
- The photochemical
sulfenylation of hindered phenols with diaryl disulfides
- Synthesis and
characterization of new stabilizers with optimal molecular weight
Application
- Adsorption of
Sterically hindered phenols on carbon
- Synthesis and
Properties of New Polymer Having Hindered Phenol Antioxidants
- Arrhenius
Parameters for Reaction of tevt-Butylperoxy Radicals with some Hindered
Phenols and Aromatic Amines
- The Effect of Hindered
Phenol Stabilizers on Oxygen Induction Time (OIT) Measurements, and The
Use of OIT Measurements to Predict Long Term Thermal Stability
- Melt-Grafting of
Maleimides Having Hindered Phenol Group onto Polypropylene
- Sterically
Hindered Phenols in Production and Processing of PVC
Function
- The Effect of
Hindered Phenols on Mitochondrial Oxidative
Phosphorylation
- Effects of molecule
aggregation state of hindered phenol on dynamic mechanical properties of
chlorinated polyethylene
- The effect of the
reaction conditions on the course of the reactions of hindered phenols
with N-F reagents
- Solvent effects on the
infrared spectra of hindered phenols
Product
- Dovernox®
- Octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate
- Songnox®
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Company
Profiles
- Company from
America
- Company from
China
- Company from
India
- Company from
Minnesota
- China Company
from Nanjing
Patent &
Technology
- Oxidation products of
paramethyl-substituted hindered phenols
- Spin trap nitronyl
hindered phenols
- Hindered phenol
amines
- Hindered phenol
antioxidant composition containing an amino Compound
- Process for improving
the shelf life of a hindered phenol antioxidant
- Discoloration
Technology
- Effects of some
sterically hindered phenols on whole-cell Ca2+ current of guinea-pig
gastric fundus smooth muscle cells
Material Safety Data
Sheet
- 50% AQUANOX LT21
EMULSION
- Envirotemp® 200
Fluid
- Gasoline
Antioxidant
- Gloveplus
Powdered
- Honing Oil
- Latex Tubing
- Transformer Oil
Report
- Hindered Phenols
Category Justification and Testing Rationale
- Hindered Phenols –
Comments of Environmental Defense
Raw Material
Suppliers
- 2,6-Di-tert-butylphenol
- Aldehyde
- Water
- Cresol
- Alcohol Solvents
Equipment
Suppliers & Suppliers
- Cracked Gas
Compressor
- Hindered Phenols
Suppliers
- Selling leads of
Hindered Phenols
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