In the curing systems of addition-type silicone rubber, silicone gel and organic silicone coatings, the catalytic efficiency and process adaptability of platinum catalysts directly affect the rate of crosslinking reaction, product performance and production efficiency. Our company's product, 8100, a divinyltetramethyldisiloxane platinum complex, as a classic Karstedt catalyst, with its high catalytic activity, dual curing response characteristics at room temperature and high temperature, and flexible adjustable platinum content specifications, demonstrates significant industrial application value in areas such as compression molding mix rubber, addition-type potting gel, silicone ink, silicone resin, and polyether modified silicone oil synthesis, providing an efficient and reliable catalytic solution for the addition curing system of organic silicon.


I. Core Physical and Chemical Properties of the Product


Product 8100, a divinyltetramethyldisiloxane platinum complex, appears as a pale yellow liquid, with an active substance content of no less than 20%. The room temperature activity (thickening at 25 degrees Celsius) does not exceed ten minutes, and the high temperature activity (complete curing at 120 degrees Celsius for 25 minutes) can achieve complete curing. The melting point is 12 to 13 degrees Celsius, the boiling point is 138 degrees Celsius, the flash point is 30 degrees Celsius, and the density is 0.984 grams per milliliter. This product is a Karstedt catalyst, namely a complex of divinyltetramethyldisiloxane and zero-valent platinum, and its ligand structure enables platinum to exist in a zero-valent state stably, with extremely high catalytic efficiency in silicon hydrogen addition reactions.


II. Catalytic Mechanism and Performance Advantages


The core application value of product 8100 lies in its highly efficient silicon hydrogen addition catalytic activity. Under the action of the platinum catalyst, vinyl-containing siloxanes (vinyl silicone oil or siloxanes with vinyl groups) and hydrogen-containing siloxanes (hydrogen-containing silicone oil) undergo silicon hydrogen addition reactions, forming a three-dimensional crosslinking network, achieving the transformation from a liquid mixture to an elastomer. The Karstedt catalyst, due to its special ligand structure, has higher catalytic activity and better solubility than Speier catalysts, becoming the most widely used platinum catalyst type in the addition-type silicone rubber industry.


III. Main Application Areas


Product 8100, with its catalytic properties, can play an important role in the following key application areas, specifically including:


1. Vulcanization catalyst for compression molding mix rubber and silicone tube extrusion rubber. In the high-temperature vulcanization of silicone rubber, this catalyst can rapidly catalyze the crosslinking reaction, achieving efficient vulcanization, suitable for the production of various silicone rubber products.


2. Catalyst for addition-type potting gel, silicone sheet, mold adhesive, transfer printing adhesive, silicone ink, silicone resin, and silicone gel. In electronic potting, mold manufacturing, transfer printing adhesive, and silicone gel applications, the selection of the catalyst directly affects the curing rate and product performance.


3. Catalyst for the synthesis of polyether modified silicone oil and amino silicone oil. In the synthesis process of organic silicon modified silicone oil, this product can be used as a catalyst for silicon hydrogen addition reactions, introducing polyether groups or amino groups into the silicone oil molecule chain.


4. Additives for polyurethane coatings, silicone coatings, and defoamers. In coating material and defoamer formulations, this product can be used as a functional additive.


IV. Specification Customization and Usage Suggestions


The product can be customized with platinum content ranging from 500 ppm to 200,000 ppm in various specifications. Common specifications include 500 ppm, 1,000 ppm, 2,000 ppm, 3,000 ppm, 4,000 ppm, 5,000 ppm, 6,000 ppm, 8,000 ppm, 10,000 ppm, and 20,000 to 200,000 ppm. Different platinum contents are suitable for different curing rates and process requirements of formulation systems. Users can choose the appropriate specification based on actual production conditions. The product should be stored in a dark place at a temperature range of 20 to 30 degrees Celsius, with a shelf life of 12 months. The appearance and catalytic activity of the test results are consistent with those before sealing.


V. Packaging Specifications and Storage Conditions


Product 8100 of diethylene tetramethyl siloxane platinum complex is supplied in accordance with industrial product packaging standards. The specific packaging specifications can be determined through negotiation based on customer requirements. This product is a flammable liquid and should be stored in a sealed manner in a cool, dry, and well-ventilated place, away from fire sources and strong oxidants, and avoiding exposure to light and high-temperature environments.


VI. Quality Assurance and Industrial Chain Value


Product 8100 of diethylene tetramethyl siloxane platinum complex has established a strict quality control system during the production process. Key indicators such as product appearance, active substance content, room temperature activity, and high-temperature activity are monitored throughout the process to ensure consistency and reliability between batches. As the application of additively formed silicone rubber in electronic packaging, medical catheters, power insulation, and flexible electronics continues to expand, the demand for platinum catalysts with both high catalytic activity and process flexibility is continuously increasing. This product, with its efficient catalytic performance of the Karstedt catalyst, flexible adjustable platinum content specifications, and stable quality performance, is becoming an important catalytic option for additively formed silicone rubber and organic silicon addition curing systems, providing powerful raw material support for the efficient production and performance upgrade of organic silicon materials.