Solvent-based adhesive raw materials

Covestro Desmocoll® 540/4 Linear PU particles Fast crystallization Heat and plasticizer resistant

Product Features
Desmocoll® 540/4 is a flexible polyurethane material with a very high crystallization rate and very low thermoplasticity. It has high initial bonding strength and heat resistance. Excellent adhesion to PVC materials and excellent resistance to commonly used PVC plasticizers.

Supply Form Pellet

Specification

characteristic	Numerical value	Units of measurement	method
Viscosity Haake of 15% 2-Butanone Solution at 23°C	1800±300	mPa·s	DIN EN ISO 3219/A.3
Hydroxyl content	<0.1	%	DIN53240
density	about 1.2	g/ml	DIN EN ISO 2811
Crystallization rate	about 10	min	DIN53505
Minimum activation temperature	about 60	°C	DIN EN 12961
Hot tack retention time	about 4	min	DIN EN 12961
heat resistance	about 80	°C	ASTMD816
Adhesion to plasticizer-containing materials	Excellent		DIN EN 15307

**This data is general information and is not part of the product specification.

应用
德士模科®540/4 制备的胶粘剂可用来粘接多种材料，包括皮革、橡胶、织物、木材、多种塑料（包括聚氨酯弹性体），塑料膜以及铝箔等。

Solubility/Dilution

2-Butanone	Soluble
acetone	Soluble
Ethyl acetate	Soluble
Acetone/Toluene (2:1)	Soluble
Butanone/ethyl acetate (1:1)	Soluble

Package
Packed in 25kg paper bags, 30 bags per pallet for a total of 750kg.

store
- Recommended storage temperature: 10-25℃.
- Store in original airtight container.
- Avoid direct sunlight, moisture, heat and foreign substances.

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 above 6-month period does not mean that it no longer meets the specifications or the set values 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.