Description

Polyisoprene-Graft-Maleic Anhydride is a functionalized polymer produced by grafting maleic anhydride onto a polyisoprene backbone. This chemical modification is crucial for enhancing the compatibility and adhesion properties of the base polymer with polar substrates. It is primarily needed by manufacturers in the polymer, adhesive, and coatings industries seeking to improve material performance.

Application

• Compatibilizer and Coupling Agent: Used in polymer blends and composites to improve interfacial adhesion between non-polar rubbers (like polyisoprene) and polar materials such as glass fibers, minerals, or engineering plastics like nylon.
• Adhesive Formulations: Serves as a key component in pressure-sensitive adhesives (PSAs) and structural adhesives to enhance bonding strength, particularly on difficult-to-bond surfaces.
• Rubber Modification: Employed to modify the properties of natural and synthetic rubber compounds, improving their resistance to oils, fuels, and chemicals.
• Coatings and Inks: Acts as a dispersing agent and adhesion promoter in specialty coatings, printing inks, and primers for metals and plastics.
• Tire Manufacturing: Used in tire cord dip formulations to improve the bond between rubber and reinforcing textiles like polyester or nylon.
• Thermoplastic Elastomers (TPEs): Functions as a reactive modifier in the production of TPEs to balance elasticity with processability and mechanical strength.

Basic Information

Product Name	Polyisoprene-Graft-Maleic Anhydride
CAS No.	139948-75-7
Molecular Formula	(C5H8)n·(C4H2O3)m
Molecular Weight	Variable (Polymer)
Synonyms	Maleic Anhydride-Grafted Polyisoprene; Polyisoprene-g-MA; Polyisoprene Maleic Anhydride Adduct; MA-g-Polyisoprene; Grafted Polyisoprene with Maleic Anhydride; Isoprene Rubber Maleic Anhydride Graft Copolymer; Reactive Polyisoprene; Functionalized Polyisoprene
EINECS	Contact for details

Quality Control

Our Polyisoprene-Graft-Maleic Anhydride is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure consistent performance, including analysis of grafting efficiency, acid number, molecular weight distribution, and residual monomer content. Certificates of Analysis (COA) documenting these parameters are available upon request 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Off-white to pale yellow flakes or powder
Identification (IR)	Conforms to structure
Acid Value (mg KOH/g)	30 - 70
Grafting Efficiency (%)	Min. 1.5
Moisture Content (KF)	Max. 1.0%
Molecular Weight (GPC)	Tailored upon request

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