Desmophen - Polyester

Covestro Desmophen VP LS 2249/1 short-chain branched polyester polyol High-quality high-hardness weather-resistant coatings

type	Short-chain branched polyester polyols
form of supply	White solvent-free low-viscosity liquid
use	As a binder for coatings with high quality hardness and weather resistance

Feature data*

characteristic	Numerical value	Units of measurement	method
Color value (Hazen)	≤ 100		DIN EN 1557
Viscosity@23°C	1900 ± 200	mPa·s	DIN EN ISO 3219/A.3
Hydroxyl content	15.5 ± 1	%	DIN 53 240/2
water content	≤ 0.1	%	DIN 51 777/1

*This data is for reference only, and the product specifications that should be followed are subject to the final published information.

Other data**

characteristic	Numerical value	Units of measurement	method
equivalent	about 110
Density@20℃	1.15	g/ml	DIN EN ISO 2811
Flash point	about 130	°C	DIN EN ISO 2719
Acid value	about 2	mg KOH/g	DIN EN ISO 2114

**This data is general information.

Features/Applications
Desmophen® VP LS 2249/1 is used as a component of curing agents in weather-resistant polyurethane systems. The best polyol combination blends such as Desmophen® 1150 or Desmophen® C 1100. Desmophen® VP LS 2249/1 is formulated with a hard coat, sealing compound and mortar for decorative stones. The Desmodur® series mentioned above are suitable as co-reactants therein.

compatibility
In general, Desmophen® VP LS 2249/1 has good compatibility with polyester polyols. Its compatibility with Desmodur® grades should always be tested. Desmophen® VP LS 2249/1 is slightly incompatible when mixed with Desmodur® N 3300 or with Desmodur® N 3600, in the process the product is also compatible with Desmodur® N 3200, Desmodur® N 3400 and Desmodur® NZ1 .

Solubility/Dilution
In general, Desmophen®VP LS 2249/1 has good compatibility with the listed solvents. However, its storage stability must be tested. Desmophen® VP LS 2249/1 is compatible with esters, ketones, aromatic hydrocarbons and other esters. Long-term storage with low binder content may result in turbidity and precipitation. Polyurethane grade solvents (<0.05% moisture) should be used. Solvents should not contain reactive groups.

store
- Store in original airtight container.
- Recommended storage temperature: room temperature (about 23°C).
- Avoid moisture, heat and foreign substances.

General Information: This product is moisture sensitive and should therefore be stored in the original Bayer airtight container.

storage time
Provided that the product has been stored in full compliance with the requirements in the "Storage" clause above and handled properly, the product meets the specifications stated in the "Specifications or Characteristic Values" clause above for a period of 6 months from the date of shipment stated on the shipping document or characteristic value (as applicable). The fact that a product exceeds the 6-month period above does not mean that it no longer meets the specifications or the values set in the characteristic values. However, it is recommended that products older than 6 months from the date of shipment be tested prior to use to confirm that they still meet the values set in the specifications or characteristic values. The manufacturer makes no commitments for products older than 6 months from the date of shipment, and does not assume any responsibility or liability for non-conformance to specifications or set values in characteristic values.

This product is an experimental product and has not yet gained extensive experience. Therefore, the manufacturer makes no guarantees regarding the operation or performance of the product in use.