As personal care products continue to upgrade towards a more skin-friendly experience and longer-lasting efficacy, and as high-performance polymer materials evolve towards functionalization, modified silicone oil with excellent skin affinity and reactive functional groups is becoming an important bridge connecting the cosmetics and new materials fields. Our company's product, hydroxyethoxypropyl silicone oil 219, as a modified polydimethylsiloxane with active end groups containing alcohol ether functionalities, demonstrates significant application value in multiple fields such as makeup and skincare, polymer modification, and special materials, providing high-performance multi-functional raw materials options for various industry clients.


I. Core Structural Characteristics and Physical Properties of the Product


Product hydroxyethoxypropyl silicone oil 219 is a colorless transparent liquid. The two ends of its molecular chain have active end groups containing alcohol ether functionalities. At 20 degrees Celsius, its viscosity is between 50 and 200 millipascal-seconds, with a flash point of no less than 61 degrees Celsius, and the volatile content does not exceed 0.1% at 105 degrees Celsius for two hours. Unlike ordinary silicone oil, the hydroxyl groups at the product's end groups are linked to the silicon atoms through an ethoxypropyl carbon chain, making it a carbon-hydroxyl silicone oil. Its reactivity is significantly higher than traditional hydroxyl silicone oil and can react with various organic functional groups such as isocyanate groups, carboxyl groups, and epoxy groups. The extremely high purity grade and low volatile content provide reliable quality assurance for downstream high-end applications, while the product's stability at room temperature and the basic safety guarantee provided by the flash point index are essential for storage and use.


II. Core Performance Advantages


Product hydroxyethoxypropyl silicone oil 219, with its unique end group alcohol ether structure, exhibits the following core performance advantages in various application systems:


Excellent skin affinity and moisturizing properties. The end group alcohol ether functionalities give the product its unique skin-friendly characteristics, enabling it to form a good affinity with the skin surface, having both wetting and moisturizing properties, and effectively improving the spreadability and skin sensation experience in personal care formulations.


Reactivity modification ability provided by the active end groups. The hydroxyl groups at the product's end groups can participate in various chemical reactions, making it a reactive modification agent for organic resins. The hydroxyl groups of the hydroxyalkyl silicone oil are linked to the silicon atoms through a carbon chain, and their reactivity is almost equivalent to that of conventional primary hydroxyl groups, capable of reacting with various functional groups such as isocyanate groups, carboxyl groups, and epoxy groups, and can be used for chemical modification of polyurethane and polyester polymers.


Excellent compatibility and formulation applicability. The product has good compatibility with various cosmetic ingredients and organic resins, and can be widely used in makeup, sunscreen, facial and body care, antiperspirant and deodorant, and hair care products.


III. Wide Application Areas


Product hydroxyethoxypropyl silicone oil 219, with its multi-functional performance combination, can play an important role in the following key application areas, including:


1. Personal care products. This product performs well in makeup, sunscreen, facial and body care, antiperspirant and deodorant, and hair care products. In makeup formulations, it can improve the dispersion and suspension of pigments, enhance formulation stability and adhesion, and help increase the SPF value of sunscreen formulations; in hair care products, its excellent skin affinity and moisturizing properties can give hair a soft and smooth texture, improve dry and wet combability. Its unique compatibility can also effectively retain fragrance components in the formulation, enhancing the sensory quality of the product.


2. Organic polymer modification. This product can be used to improve the performance of polyurethane, polyester, and other polymers. The active end groups can react with isocyanate groups to form high-quality organic silicone/polyurethane copolymers, significantly improving the softness, tear resistance, lubricity, breathability, abrasion resistance, and hydrophobicity of the material. Due to the fact that the terminal hydroxyl groups are connected to the silicon atom through a stable carbon chain, their reactivity is much higher than that of ordinary silicon hydroxyl groups. This enables more efficient chemical bonding in polyurethane modification.


III. Special Functional Materials Field. This product can be used in the preparation of special functional materials such as antithrombotic materials, thermosensitive recording materials, plastic films, etc.


IV. Packaging Specifications and Storage and Transportation Conditions


Product hydroxyethyl oxypropyl siloxane 219 is available in various packaging specifications such as IBC ton containers, 200-liter iron barrels/plastic barrels, 25-liter plastic barrels, etc. Custom packaging can also be provided. This product is stored and transported as non-hazardous chemicals and is stable at room temperature. During storage, it must not come into contact with open flames or water. It should be kept in a ventilated and dry environment, protected from sunlight and rain. The original packaging should not be opened without sealing under the specified temperature. The storage period is one year from the production date. After the expiration date, re-inspection of all indicators must be conducted to ensure they are qualified before use.


V. Quality Assurance and Industrial Chain Value


Product hydroxyethyl oxypropyl siloxane 219 has established a strict quality control system during the production process. Key indicators such as appearance, viscosity, flash point, and volatile matter are tested throughout the process to ensure consistency and reliability between batches.


As the personal care product industry continues to upgrade towards efficacy and experience-oriented directions, and high-performance polymer materials continue to develop towards functionalization, the demand for multi-functional modified silicone oil with both skin-friendly properties and reactivity is steadily increasing. Product hydroxyethyl oxypropyl siloxane 219, with its unique terminal alcohol ether structure design, excellent skin affinity, and wide industrial applicability, is becoming a multi-functional raw material option connecting the cosmetics and new materials fields. It provides strong raw material support for promoting product innovation and technological upgrading in related industries.