Description

1,3-Butadiene, 2-Methyl-, Homopolymer, Of cis-1,4-Configuration, Cyclized, Phenol-Modified is a specialized, high-performance hydrocarbon resin derived from isoprene. This phenol-modified, cyclized polymer is engineered to offer exceptional thermal stability, oxidative resistance, and compatibility with a wide range of polymers and elastomers. It serves as a critical tackifier, reinforcing agent, and processing aid in the formulation of advanced adhesives, sealants, and rubber compounds for demanding industrial applications.

Application

• Pressure-Sensitive Adhesives (PSAs): Acts as a key tackifying resin in tapes, labels, and graphic films, providing excellent peel and shear strength.
• Rubber Compounding: Used as a reinforcing and processing aid in tire treads, belts, hoses, and other molded rubber goods to enhance durability and reduce viscosity during mixing.
• Hot-Melt Adhesives: Improves thermal stability, open time, and adhesion properties in packaging, woodworking, and non-woven adhesive formulations.
• Sealants and Caulks: Enhances flexibility, adhesion, and weatherability in construction and automotive sealant applications.
• Printing Inks: Functions as a resin modifier to improve gloss, rub resistance, and pigment wetting in specialty ink formulations.
• Polymer Modification: Utilized as a compatibilizer and impact modifier in blends of polar and non-polar polymers.

Basic Information

Product Name	1,3-Butadiene, 2-Methyl-, Homopolymer, Of cis-1,4-Configuration, Cyclized, Phenol-Modified
CAS No.	70247-83-5
Molecular Formula	(C5H8)n • Modified
Molecular Weight	Varies (Polymer)
Synonyms	Phenol-modified cyclized polyisoprene resin; Cyclized polyisoprene, phenol-modified; Isoprene homopolymer, cyclized, phenol-modified; Hydrocarbon tackifier resin; C5 hydrocarbon resin, phenol-modified; Synthetic polyterpene resin; Tackifying resin 70247-83-5
EINECS	Contact for details

Quality Control

Our production of Phenol-Modified Cyclized Polyisoprene Resin adheres to stringent quality management protocols. Each batch is characterized for critical parameters including softening point, color, acid value, and bromine number to ensure batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) documenting full specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) in the container headspace is recommended to preserve product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Pale yellow to amber lumps or flakes
Softening Point (Ring & Ball)	85 - 115 °C
Color (Gardner)	≤ 8
Acid Value	≤ 2.0 mg KOH/g
Bromine Number	Contact for details
Ash Content	≤ 0.1 %

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