VITROFLEX B is a unique blend of dibenzoates specially tailored for the polysulfide market. This plasticizer is useful particularly in the B-side (catalyst) component of 2K polysulfide sealants. VITROFLEX B imparts good rheology for suspension stability of dispersed solids, elasticity, fast cure rates and hardness development.
| Attribute | Value |
|---|---|
| Specifications | |
| Acidity, acid no | 1.5 |
| Color Max (Gardner) | 2.0 |
| Hydroxyl Number, mg NaOH/g sample, max | 30 |
| Viscosity, Brookfield RVT, 20 RPMs at 25°C, cps and mPa·s | 730-930 |
| Typical Properties | |
| Boiling Point (5 mm Hg,°C) | 206 |
| Boiling Point, extrapolated to 760 mm Hg, °C | 322 |
| Color (Gardner) | 0 |
| Density, ASTM D1475, 25°C g/ml | 1.15 |
| Density, ASTM D1475 ,25°C lbs/gal | 9.63 |
| Flash Point, ASTM D92, °C | 232 |
| Freeze Point, °C | <-20 |
| Glass Point, by DSC, °C | 50 |
| Hydroxyl Number (mg NaOH/g) | 25 |
| Moisture Content, % | 0.06 |
| Solubility, in water, % | 1.13 |
| Solubility, water in % | 0.08 |
| Specific Gravity, 25/25°C | 1.15 |
| Surface Tension, ASTM D1331, 25°C, dynes/cm | 33 |
| Vapor Pressure, 25°C (extrapolated), mmHg | 4.6 x 10^-6 |
| Viscocity, Brookfield RVT, 20 RPMs at 25°C, cps and mPa.S | 834 |
| Viscosity, Kinematic, 25deg;C, cSt | 722 |
| VOC, ASTM D2369, % | 1.1 |
| FDA Coverages | |
| 21 CFR 175.105 | Adhesives (PART 175 – INDIRECT FOOD ADDITIVES: ADHESIVES AND COMPONENTS OF COATINGS, Subpart B – Substances for Use Only as Components of Adhesives). VITROFLEX B may be used in applications covered by 175.105 provided a functional barrier separates the food from the adhesive as required by subsection (a)(2) of the regulation. |
| 21 CFR 176.170 | Components of paper and paperboard in contact with aqueous and fatty foods. VITROFLEX B is permitted by 176.170(b) provided that the final product (i.e., the food-contact surface of the paper or paperboard) complies with the extractives limitations prescribed in 176.170(c). |
| 22 CFR 176.180 | Components of paper and paperboard in contact with dry food |
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