K-FLEX® A307 by King Industries is a low viscosity, 100% solids linear, saturated, aliphatic polyester diol with primary hydroxyl groups. It was designed as a flexibility modifier for acrylic/isocyanate and acrylic/melamine systems. Offers improved flexibility, good balance of surface dry/pot life in 2K PU, light color and abrasion resistance. The low hydroxyl number minimizes the crosslinker demand. It has no acid functionality. K-FLEX® A307 is used in automotive OEM, automotive refinish, aerospace, industrial maintenance and plastic coatings. Its shelf life is minimum of 24 months from date of manufacture, when stored in the original container at ambient conditions.
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K-FLEX® A307 properties
Other properties
| Properties | Value & unit | Test condition | Test method |
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| Acid Value | 0.0 Visible After Login | Visible After Login | Visible After Login |
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| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hydroxyl Equivalent Weight (HEW) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hydroxyl Value | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Non-volatile Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Viscosity | 0.0 Visible After Login | Visible After Login | Visible After Login |
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