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BR-600 Series Oligomers..

Polybutadiene urethane acrylates (PBDUA). Designed to meet rigorous electronic applications, PBDUAs have many desirable properties typical of PBD resins, combined with radiation curability via UV/EB. Recommended for applications requiring low moisture pickup, thermal cycling resistance, and high dielectric constant.

 
OLIGOMER PROPERTIES FORMULATED PROPERTIES IN 30% IBOA
2% Omnirad 481
Oligomer f Oligomer Type MW
Neat Oligomer Viscosity
Tg*
(°C)		 Viscosity
cP @25°C		 Tensile
Strength, psi		 Elong. %
@ break		 Durometer
(hardness)
BR-641
2 
Aliphatic
Med
62,000 cP
@50°C
-30
18885 
3030
36
85D 
BR-643
2
Aliphatic
Med
65,000 cP
@50°C
-16
15250
1120
57 
84A

f = (meth)acrylate functionality
*Glass transition temperature measured by DMA, peak tan delta.

MOLECULAR WEIGHT
Low:  less than 2000 glmol    MED:  2000-4000 glmol    HIGH:  greater than 4000 glmol


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