Description

Polyisoprene-Graft-Maleic Acid Monomethyl Ester is a functionalized polymer derivative, synthesized by grafting maleic acid monomethyl ester onto a polyisoprene backbone. This chemical modification is crucial for introducing polar, reactive anhydride/carboxylate groups, which significantly enhance the polymer's adhesion, compatibility, and reactivity with other materials. It is primarily needed by formulators and polymer scientists in the adhesives, coatings, rubber compounding, and compatibilizer industries seeking to improve the performance of non-polar elastomers.

Application

• As a key reactive compatibilizer in polymer blends, improving the interfacial adhesion between polar (e.g., nylon, polyesters) and non-polar (e.g., polyolefins, natural rubber) polymers.
• As an adhesion promoter in specialty pressure-sensitive adhesives (PSAs) and structural adhesives for difficult-to-bond substrates like metals or treated plastics.
• In the formulation of toughened engineering plastics, where it acts as an impact modifier by forming a dispersed elastomeric phase.
• For the surface modification of fillers (e.g., carbon black, silica) to enhance their dispersion and reinforcement within rubber compounds.
• As a chemical intermediate for further reactions, such as crosslinking or the introduction of other functional groups via the reactive maleic ester moiety.
• In the development of specialty coatings and inks to improve flexibility, chemical resistance, and substrate wetting.

Basic Information

Product Name	Polyisoprene-Graft-Maleic Acid Monomethyl Ester
CAS No.	128000-08-8
Molecular Formula	Typically represented as (C5H8)n grafted with C5H6O4. Contact for specific formula based on grafting ratio.
Molecular Weight	Variable, dependent on polyisoprene chain length and grafting percentage.
Synonyms	Maleic Acid Monomethyl Ester Grafted Polyisoprene; Polyisoprene-g-Maleic Anhydride Monomethyl Ester; Poly(1-methyl-1-butenylene)-alt-(Z)-2-butenedioic acid monomethyl ester; Grafted Polyisoprene with MAME; MAME-g-Polyisoprene; Functionalized Polyisoprene; Reactive Polyisoprene Derivative; Polyisoprene Maleic Ester Adduct
EINECS	Contact for details.

Quality Control

Our Polyisoprene-Graft-Maleic Acid Monomethyl Ester is produced under a rigorous quality management system. Each batch is characterized to ensure consistent performance, with key parameters including grafting efficiency, acid number, molecular weight distribution, and residual monomer content. Certificates of Analysis (COA) detailing these specifications are available upon request to support your quality assurance and R&D processes.

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). This material is moisture-sensitive (hygroscopic); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect reactivity.

Specification

Item	Specification
Appearance	Off-white to pale yellow solid / viscous liquid
Identification (IR)	Conforms to structure
Acid Value (mg KOH/g)	30 - 80 (Typical)
Grafting Ratio (%)	5 - 20 (Typical)
Moisture Content (KF)	< 1.0 %
Residual Solvent (GC)	Meets ICH guidelines

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