Description

Peg-8/Smdi Copolymer CAS NO 39444-87-6 is a synthetic polymer formed from polyethylene glycol units and a disocyanate linker, designed to offer unique rheological and film-forming properties. This copolymer is valued for its ability to modify viscosity, enhance stability, and act as a versatile functional ingredient in advanced formulations. It is essential for manufacturers in the personal care, coatings, and specialty chemical industries seeking performance additives for products like creams, lotions, and industrial coatings.

Application

• Personal Care & Cosmetics: Acts as a thickener, stabilizer, and film-forming agent in skin creams, lotions, sunscreens, and hair styling products.
• Industrial Coatings & Adhesives: Used as a rheology modifier and binder to improve application properties, film integrity, and durability.
• Pharmaceutical Topicals: Serves as an excipient in topical gels and ointments to control drug release and enhance texture.
• Textile & Fiber Treatments: Functions as a softening agent and processing aid to improve fabric hand feel and performance.
• Inks & Pigment Dispersions: Enhances dispersion stability and flow characteristics in various ink systems.
• Household & I&I Cleaners: Utilized as a viscosity builder and stabilizer in liquid detergents and cleaning formulations.

Basic Information

Product Name	Peg-8/Smdi Copolymer
CAS No.	39444-87-6
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,1‘-methylenebis[4-isocyanatobenzene]; PEG-8/SMDI Copolymer; Polyethylene Glycol 400/SMDI Copolymer; Ethoxylated Polymer with Methylene Diphenyl Diisocyanate; SMDI-PEG Copolymer; Polyoxyethylene SMDI Copolymer; Poloxamer-related copolymer; PEG/MDI copolymer
EINECS	Contact for details

Quality Control

Our Peg-8/Smdi Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including assessment of viscosity, residual monomers, and functional group content. Certificates of Analysis (COA) documenting key specifications 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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after initial use to prevent moisture absorption, which may affect product performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Complies
Assay (Functional Group)	≥ 95.0%
Viscosity (25°C)	Contact for details
Water Content	≤ 1.0%
Residual Monomer	≤ 0.5%
pH (5% solution)	5.0 - 7.0

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