Description

1,3-Butadiene, 2-Methyl-, Homopolymer, Of cis-1,4-Configuration, Cyclized is a specialized synthetic polymer derived from isoprene, characterized by its cyclized structure and high cis-1,4 configuration. This unique molecular architecture provides exceptional thermal stability, chemical resistance, and low-temperature flexibility, making it a critical performance additive. It is primarily sought by manufacturers in the rubber, adhesive, and specialty coating industries seeking to enhance the durability and performance of their formulations.

Application

• Rubber Compounding: Acts as a key modifier in tire treads, sidewalls, and industrial rubber goods to improve abrasion resistance, reduce rolling resistance, and enhance wet grip.
• Pressure-Sensitive Adhesives (PSAs): Used as a tackifier and modifier to improve adhesion, cohesion, and thermal stability in tapes, labels, and films.
• Specialty Coatings & Sealants: Imparts flexibility, weatherability, and chemical resistance to high-performance protective coatings, mastics, and construction sealants.
• Polymer Modification: Serves as a compatibilizer and impact modifier in blends with other polymers like polystyrene or polyethylene to enhance toughness.
• Oil & Fuel Additives: Utilized as a viscosity index improver and deposit control agent in lubricating oils and fuel formulations.
• Electrical Insulation: Incorporated into cable jacketing and insulating materials for its excellent dielectric properties and flexibility.

Basic Information

Product Name	1,3-Butadiene, 2-Methyl-, Homopolymer, Of cis-1,4-Configuration, Cyclized
CAS No.	68441-13-4
Molecular Formula	(C5H8)n
Molecular Weight	Varies (Polymer)
Synonyms	Cyclized Polyisoprene; cis-1,4-Polyisoprene, Cyclized; Cyclized Synthetic Rubber; Thermoplastic Polyisoprene Resin; Cyclized Isoprene Homopolymer; Cyclorubber; Synthetic Cyclized Rubber; Polytarpene Resin
EINECS	Contact for details

Quality Control

Our cyclized polyisoprene is manufactured under strict process controls to ensure batch-to-batch consistency and performance reliability. Quality is verified through a comprehensive suite of analytical tests including Gel Permeation Chromatography (GPC) for molecular weight distribution, Infrared Spectroscopy (IR) for structural confirmation, and thermal analysis. A Certificate of Analysis (COA) detailing specific parameters is provided with each shipment to guarantee compliance with your technical 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, open flames, and strong oxidizing agents. Under recommended conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	Pale yellow to amber lumps or powder
Identification (IR)	Conforms to structure
cis-1,4 Content	> 90%
Cyclization Degree	40 - 70%
Softening Point (Ring & Ball)	90 - 120 °C
Ash Content	< 0.5 %
Volatile Matter	< 1.0 %

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