polyester polyol MT-670 BA
We are a manufacturer based in China. We specialize in providing high-quality polyester polyol MT-670 BA for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Coating raw materials MOQ:100KG Shipped directly from China
Introduction
Introduction
Slightly branched hydroxyl-bearing polyester.As a co-reactant primarily with MT- N 75 and ultra N 3390 in the formulation of weather-stable flexible coatings.
Product Types
Polyester resin
Material
Coatings, paints & inks
Flexible, Elastic, Weather resistant, Solventborne
Applications
Combined with MT- N 75 or ultra N 3390. MT-670 BA yields films with very good weather stability and excellent low temperature flexibility. Such coatings are mainly used to coat plastics and are force-dried, e.g. at 80 °C. MT-670 BA can also be added to other two-component polyurethane systems to improve their flexibility.
Form supplied
approx. 80 % in butyl acetate
Solubility / thinnability
MT-670 BA is soluble in ethyl acetate, butyl acetate, 1-methoxypropylacetate-2. methyl ethyl ketone, methyl isobutyl ketone, toluene and mixtures of all these solvents. However, the solutions formed must be tested for their storage stability. Solutions in xylene with a solids content of less than 40 % may separate. Only PU grade solvents should be used (< 0.05 % water, free from other reactive impurities).
Compatibility
Generally speaking, MT-670 BA is miscible with many polyester MT-grades and various vinyl copolymers. However, the combinations must be tested for their compatibility. MT-670 BA has only limited compatibility with acrylate MT-grades and with cellulose acetobutyrate.
Storage
– Storage in original sealed MT container.
– Recommended storage temperature: max. 30 °C.
– Protect from moisture, heat and foreign material.
General information: Under certain conditions (temperatures below 15 °C, long storage) the product may become cloudy. It can be completely rehomogenized by heating to around 40 °C or adding solvent, and can be further processed without any loss of quality.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Hazen color value | ≤ 150 | DIN EN 1557 | ||
| Acid value | 1.8 ± 1 | mg KOH/g | DIN EN ISO 2114 | |
| Viscosity at 23°C | 3.000 ± 400 | mPa*s | DIN EN ISO 3219/A.3 | |
| Non-volatile content | 1 g resin/1 h 125 °C, convection oven | 80 ± 1 | % | DIN EN ISO 3251 |
| Hydroxyl content | 3.5 ± 0.3 | % | DIN EN ISO 4629-2 | |
| Water content | ≤ 0.1 | % | DIN 51 777/1 |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Equivalent weight | approx. 485 | |||
| Density at 20°C | approx. 1.11 | g/ml | DIN EN ISO 2811-2 | |
| Flash point | approx. 32 | °C | DIN EN ISO 2719 |
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