Description

Polyisoprene Trans CAS NO 104389-32-4 is a synthetic polymer of isoprene, specifically the trans-1,4 isomer, known for its high molecular weight and excellent elastic properties. This material is a critical synthetic alternative to natural rubber, offering superior consistency, purity, and tailored performance characteristics for demanding industrial applications. It is essential for manufacturers in the medical device, automotive, and specialty adhesives sectors who require a reliable, high-performance elastomer with controlled properties.

Application

• Medical Device Manufacturing: Used in the production of high-purity components such as syringe plungers, vial stoppers, and surgical tubing due to its excellent biocompatibility and consistent quality.
• Specialty Adhesives & Sealants: Serves as a key elastomeric component in pressure-sensitive adhesives (PSAs) and high-performance sealants, providing superior tack and cohesive strength.
• Automotive Components: Employed in the formulation of vibration dampeners, gaskets, and other under-the-hood parts where thermal stability and chemical resistance are required.
• Consumer Goods: Found in high-quality elastic bands, footwear soles, and sporting goods that demand durability and consistent rebound elasticity.
• Industrial Rubber Goods: Used in the compounding of belts, hoses, and molded rubber products that benefit from its synthetic purity and processing consistency.
• Research & Development: Acts as a standard or base polymer for developing new polymeric materials and testing formulations in laboratory settings.

Basic Information

Product Name	Polyisoprene Trans CAS NO 104389-32-4
CAS No.	104389-32-4
Molecular Formula	(C5H8)n
Molecular Weight	Varies (High Polymer)
Synonyms	trans-1,4-Polyisoprene; Synthetic trans-Polyisoprene; trans-Polyprene; Gutta-Percha (synthetic analog); (1E)-1,4-Poly(2-methyl-1,3-butadiene); trans-PI; TPIP; Balata (synthetic analog)
EINECS	Contact for details

Quality Control

Our Polyisoprene Trans is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. The product undergoes rigorous testing, including analysis of molecular weight distribution, trans-isomer content, and residual monomer levels. Certificates of Analysis (COA) detailing purity, viscosity, and other critical parameters are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents, excessive heat, and sources of ignition to maintain product integrity.

Specification

Item	Specification
Appearance	White to pale yellow pellets or solid
Identification (IR)	Conforms to structure
Assay (trans-1,4 Content)	≥ 98%
Mooney Viscosity (ML 1+4 @ 100°C)	30 - 80 (Grade dependent)
Volatile Matter	≤ 0.8%
Ash Content	≤ 0.1%
Stabilizer Content	As specified (typically BHT)

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