ADDITIN® RC 7115
Phenolic antioxidant, solid, crystalline, especially for medium high temperature and esters
Additin® RC 7115 is a non-discolouring, highly effective antioxidant with broad applicability. The superior effectiveness over other mono- and dimeric phenolic antioxidants is related to the unique chemical structure of Additin® RC 7115. It is not only a radical scavenger but is, at the same time, able to deactivate catalytically active, dissolved copper by complexation. Due to the high molecular weight, Additin® RC 7115 has a low evaporation tendency and is therefore very well suited for high temperature applications.
By combining Additin® RC 7115 with aminic antioxidants, e.g. Additin® RC 7130, RC 7135 LD or copper deactivators, e.g. Additin® RC 8239, the oxidation inhibition properties of Additin® RC 7115 can be further increased.
- high performance phenolic antioxidant
- excellent antioxidant properties
- good thermal stability
- widely used in various lubricants
- stabilization of vegetable and animal fats
- used for stabilizing of biodegradable lubricants
- complexing effect on catalytic metal cations
Brand
ADDITIN®
High performance additives
Mineral oil and lubricant
BIS(6-HYDROXY-3-METYHYL-5-TERT-BUTYLPHENYL)METHANE
BIS(2-HYDROXY-3-TERT-BUTYL-5-METHYLPHENYL)METHANE
6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol
2,2-METHYLEN-BIS-(4-METHYL-6-TERT.BUTYLPHENOL)
p-CRESOL, 2,2'-METHYLENEBIS(6-TERT-BUTYL-)
PHENOL, 2,2'-METHYLENEBIS(6-(1,1-DIMETHYLETHYL)-4-METHYL
2-tert-butyl-6-[(3-tert-butyl-2-hydroxy-5-methylphenyl)methyl]-4-methylphenol
FREQUENTLY ASKED QUESTIONS (FAQ)
Not really: Ageing of lubricants includes several steps, the first being a radical step, followed by reaction of the radicals with oxygen from air. That reaction step involving oxygen is a chemical oxidation and used therefore pars pro toto to name the whole process!
Lanxess offers all three types of antioxidants: Primary antioxidants – radical scavengers – could be found in the product lines Additin RC 7xxx and Naugalube. Secondary antioxidants are not found under ANTIOXIDANTS directly, but as sulfur carriers and dithiophosphates work as secondary antioxidants, those could be found in the product lines Additin RC 2xxx, Additin RC 30xx and Additin RC 6xxx. Tertiary antioxidants are not found under ANTIOXIDANTS directly, but as corrosion inhibitors for cobalt, copper and steel work as tertiary antioxidants, those could be found in the product lines Additin RC 4xxx and Additin RC 82xx!
When scavenging radicals primary antioxidants turn into chemical species that might absorb light of different frequencies. The lubricant appears in a complementary color. Discoloration means the antioxidants are at work.
No: Antioxidants reduce the velocity of ageing but cannot turn time back! Therefore, antioxidants must be added before radicals are generated and ageing started!
