Description

(Carboxyalkyl) Terminated Polydimethylsiloxane is a specialized organosilicon polymer featuring reactive carboxyalkyl end groups, offering a unique combination of silicone fluid properties with carboxylic acid functionality. This dual nature makes it a highly versatile intermediate for creating custom silicone-based materials with enhanced compatibility, adhesion, and reactivity. It is particularly valuable for formulators and manufacturers in the personal care, coatings, adhesives, and advanced materials sectors seeking to modify surface properties or develop novel hybrid polymers.

Application

• Personal Care & Cosmetics: Acts as a reactive emulsifier or compatibilizer in advanced silicone-in-water emulsions for creams, lotions, and sunscreens, improving stability and skin feel.
• Adhesives & Sealants: Serves as a key intermediate for synthesizing moisture-curable or chemically cross-linkable silicone adhesives and sealants with improved adhesion to various substrates.
• Surface Coatings & Release Agents: Used to modify surface energy and create durable, functional coatings with specific release, anti-fouling, or hydrophobic properties.
• Polymer Modification: Employed as a reactive additive or macromonomer to incorporate silicone segments into organic polymer backbones (e.g., polyesters, polyurethanes), enhancing flexibility, weatherability, and surface characteristics.
• Textile & Fiber Treatment: Utilized in formulations for imparting durable softness, water repellency, or specific hand feel to fabrics and non-wovens.
• Pharmaceutical & Biomedical: Functions as a precursor for synthesizing biocompatible silicone polymers or hydrogels used in drug delivery systems and medical device coatings.

Basic Information

Product Name	(Carboxyalkyl) Terminated Polydimethylsiloxane
CAS No.	158465-59-9
Molecular Formula	Typically CnH2n+1O2Si (Variable, depends on alkyl chain length and polymer degree)
Molecular Weight	Variable (Contact for details on specific grades)
Synonyms	Carboxy-Functional Polydimethylsiloxane; Carboxyalkylsiloxane; Carboxy-Terminated PDMS; Silicone Carboxylic Acid; Poly(dimethylsiloxane), carboxyalkyl terminated; Acid-Functional Silicone Fluid; Reactive Silicone Intermediate; Carboxypropyl Terminated Polydimethylsiloxane
EINECS	Contact for details

Quality Control

Our (Carboxyalkyl) Terminated Polydimethylsiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of acid value, viscosity, molecular weight distribution, and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents. Due to its reactive acid functionality, prolonged exposure to moisture should be minimized to prevent potential viscosity changes.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Acid Value	As per grade (Contact for details)
Viscosity (25°C)	As per grade (Contact for details)
Specific Gravity (25°C)	0.95 - 1.05
Refractive Index (25°C)	1.400 - 1.410
Water Content	< 0.5% (by Karl Fischer)
Identification (IR)	Conforms to structure

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