Description

Dimethylsiloxane, Carboxymethyl Copolymer is a specialized organosilicon polymer engineered by incorporating carboxymethyl functional groups into a polydimethylsiloxane backbone. This unique structure provides enhanced compatibility with aqueous systems and offers reactive carboxyl sites, making it a valuable functional additive and modifier. It is essential for formulators seeking to improve the performance, stability, and functionality of products in demanding industrial and personal care applications. Key industries that rely on this copolymer include advanced coatings, specialty adhesives, and high-performance cosmetic formulations.

Application

• As a stabilizer and rheology modifier in water-based industrial coatings and inks.
• As a functional additive in pressure-sensitive adhesives to enhance tack and cohesion.
• As a conditioning and film-forming agent in hair care and skincare products.
• As a release agent and surface modifier in manufacturing processes for plastics and rubbers.
• As a compatibilizer in polymer blends to improve interfacial adhesion between dissimilar materials.
• As a raw material for further chemical synthesis of silicone-based surfactants and crosslinkable polymers.

Basic Information

Product Name	Dimethylsiloxane, Carboxymethyl Copolymer
CAS No.	68440-75-5
Molecular Formula	(C2H6OSi)m(C3H6O3Si)n
Molecular Weight	Varies by grade and composition
Synonyms	Carboxymethyl-modified Polydimethylsiloxane; Silicone Carboxymethyl Copolymer; Poly(dimethylsiloxane-co-carboxymethylmethylsiloxane); Carboxyfunctional Silicone Fluid; PDMS-Carboxymethyl Copolymer; Organosiloxane Carboxymethyl Copolymer; Carboxymethyl Terminated Silicone; Reactive Silicone Copolymer
EINECS	Contact for details

Quality Control

Our Dimethylsiloxane, Carboxymethyl Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in viscosity, acid value, and functional group content, meeting precise customer specifications. Certificates of Analysis (COA) documenting key parameters are provided with every shipment. We support compliance with relevant global regulatory frameworks, including REACH.

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). Keep away from strong acids and organic solvents. For long-term storage, consider using an inert atmosphere to maintain optimal product stability.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specified grade range
Acid Value	Specified grade range
Non-volatile Matter	> 98.0%
Color (Gardner)	≤ 2

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