Description

2,2'-(2-Methylpropylidene)Bis[6-Cyclopentyl-4-(1,1-Dimethylethyl)Phenol] is a high-performance sterically hindered phenolic antioxidant. This compound is valued for its exceptional ability to inhibit oxidative degradation and extend the service life of polymers and other sensitive materials. It is a critical additive for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product stability and performance under demanding conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Lubricant & Fuel Additive: Used in engine oils, industrial lubricants, greases, and fuels to control oxidation, reduce viscosity increase, and prevent sludge formation.
• Adhesive & Sealant Formulations: Enhances the shelf-life and long-term stability of hot-melt, pressure-sensitive, and structural adhesives by protecting against oxidative cross-linking or chain scission.
• Elastomer Protection: Critical for stabilizing synthetic elastomers like SBR, BR, and NBR against aging, maintaining elasticity and mechanical properties.
• Coating Resins: Incorporated into alkyd, acrylic, and polyurethane coating systems to prevent yellowing and embrittlement caused by UV and thermal exposure.
• Specialty Chemical Intermediate: Serves as a key building block for synthesizing more complex antioxidant systems and performance chemicals.

Basic Information

Product Name	2,2'-(2-Methylpropylidene)Bis[6-Cyclopentyl-4-(1,1-Dimethylethyl)Phenol]
CAS No.	93893-77-7
Molecular Formula	C39H60O2
Molecular Weight	560.89 g/mol
Synonyms	Bis(6-Cyclopentyl-4-tert-butyl-2-methylphenol)methane; 2,2'-Isobutylidenebis(6-cyclopentyl-4-tert-butylphenol); Antioxidant 93893-77-7; Phenolic Antioxidant (High Molecular Weight); 4,4'-Isobutylidenebis(2-cyclopentyl-6-tert-butylphenol); Bis(2-cyclopentyl-6-tert-butyl-4-methylphenol)methane; AO-93893
EINECS	Contact for details

Quality Control

Our production of 2,2'-(2-Methylpropylidene)Bis[6-Cyclopentyl-4-(1,1-Dimethylethyl)Phenol] adheres to a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters are provided to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from light to maintain efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	115°C - 125°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.