POLYURETHANE DISPERSIONS

POLYURETHANE ADHESIVE DISPERSIONS

DESCRIPTION
Dispercoll® U is an aqueous anionic dispersion of high molecular weight polyurethane. It is a raw material for the production of thermally activated adhesives for use in the furniture, automotive, footwear and construction industries, for example. Dispercoll® U has a high solids content and is especially suitable for bonding plasticized PVC.

Urethane aqueous dispersions solve a number of both environmental problems:

environment protection;
excellent production hygiene;
improving industrial safety;
low capital investment and cost-effective to use (does not require solvent regeneration and special rooms);
ease of manufacture (for example, low viscosity with high polymer content);
high adhesion properties (high initial and final bond strength);
low activation temperature: 50-80 degrees.
The main advantage of aqueous dispersions of polyurethanes in comparison with solution systems of urethane rubbers is the independence of the viscosity of the dispersion from the molecular weight of the polymer.

Urethane dispersions can be used in one-component or two-component versions using isocyanate hardeners.
SPECIFICATIONS
Product    Dry residue,%    Viscosity (mPa * s) 23  0 С    Activation temperature, 0 С    Features:
Dispercoll U42    50    150 - 800    80 - 100    Amorphous, elastic, wet backing textile
Dispercoll UXP2643    40    <1000    > room temp.    Amorphous, sticky at room temperature, crosslinked with polyfunctional carbodiimide
Dispercoll U2815XP    35    <1000    > room temp.    Slow crystallization, contact adhesion, good adhesion to plasticized PVC
Dispercoll U54    50    40 - 600    60 - 70    Crystalline, long open time, footwear industry
Dispercoll UXP2612    50    50 - 800    65 - 75    Crystalline, higher initial heat resistance than U54
Dispercoll U58    50    50 - 800    65 - 75    Crystalline, high tack, good initial heat resistance
Dispercoll UXP2710    45    <1000    65 - 75    Crystalline, good initial heat resistance, good application properties
Dispercoll U56    50    50 - 900    55 - 65    Crystalline, low activation temperature
Dispercoll UXP2702    47    <1000    55 - 65    Crystalline, accelerated version of U56
Dispercoll UXP2682    50    <1000    50 - 60    Crystalline, lower activation temperature than U56
Dispercoll U53    40    50 - 600    60 - 70    Crystalline, standard dispersion for 3D lamination
Dispercoll U8755    45    <1000    80 - 100    Crystalline, high temperature resistance at 1K use
Dispercoll U2849XP    50    <2000    80 - 100    Amorphous - crystalline, high weather resistance

Dispercoll U2824XP                                       40    50 - 400    50 - 60    Crystalline, low temperature activation, crosslinked with polyfunctional carbodiimide
By combining different grades of urethane dispersions, adhesive systems with desired properties can be obtained.
Packaging: 

- Plastic drums, 210 kg

- IBC cubes, 1000 kg
Storage conditions: A prerequisite for storing polyurethane dispersions is to protect the product from freezing and high temperatures. It is necessary to store the dispersion in the temperature range of 5 - 30 ° С.