DPM-9923F21 Single-hydroxyl organosilicon prepolymer at both ends

Overview

• DPM-9923F21 It is a bimodal, single-hydroxyl-functionalized organosilicon prepolymer capable of reacting with-NCO, -NH₂, -COOH, and epoxy groups. It is primarily used in the modification of PUD and TPU as well as polyester resins.

Typical Characteristic

project	unit	data
appearance	/	Pale yellow, transparent or slightly turbid liquid
solid Content	%	≥96
refractive index（25℃）	/	1.4390±0.0050
viscosity（25℃）	CPS	140-500
hydroxyl value	mgKOH/g	65
freezing point	℃	＜16

Product Features

• ①Enhances the wear resistance of resins or coatings as well as their smooth, non-sticky feel.
• ②It offers certain anti-adhesion, anti-contamination, and graffiti-resistant properties.
• ③Low surface tension, promotes leveling.

Application Area

• Synthetic organosilane-modified polyurethane resin: It is recommended to add this resin together with polyol monomers; it reacts with the isocyanate monomer at approximately 85 °C; when reacting with IPDI, the reaction temperature should be increased.
• Synthetic silicone-modified TPU and polyester resins: Generally added at a concentration of 0.2–0.5% to TPU polymer systems, they provide demolding and anti-adhesion effects; when added at 3–10%, they offer excellent hydrophobicity, stain resistance, and a silicone-like texture, and can be reacted simultaneously with polyols. For esterification reactions, they may replace part of the polyols; stepwise reaction is recommended for optimal performance.

Safety, Packaging and Storage

• Store at room temperature, unopened, in its original packaging. The shelf life is 12 months from the date of manufacture. This product is not classified as a hazardous substance; when stored at low temperatures, it may exhibit visual changes such as turbidity or solidification. The product should be warmed to dissolve before use; this process does not affect the product’s performance.
• 25kg and 50kg plastic drum packaging.

Packaging Images

Price

Disclaimer：The above information is provided based on the specific characteristics of our products and is derived from existing knowledge; it is intended solely as an introduction and usage recommendation for our products and does not constitute a warranty regarding the specific characteristics of our products when used in particular applications. Therefore, we assume no responsibility for this information or recommendations.