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BR-500 Series Oligomers

Aliphatic linear polyether urethane (meth)acrylates. This is our most versatile series of oligomers, which includes patented oligomers. The cured oligomers demonstrate outstanding hydrolytic stability, low toxicity, excellent abrasion resistance and weatherability. They can be used in both exterior and interior coatings.
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-541
2
Aliphatic
Low
35,000 cP
@50°C
49 
8000
2050
60 
72D
BR-543
2
Aliphatic
Med 
30,000 cP
@50°C
-52
14000
900
200 
77A 
BR-543M
2
Al/methacrylate 
Med
30,000 cP
@50°C
-62
13000 
1300
220
75A
BR-571
2
Aliphatic
Low
100,000 cP
@50°C
37 
30000
3600
115
68D
BR-571M
2
Al/methacrylate
Low 
100,000 cP
@50°C
50
27000
4500
110 
74D
BR-582
2.4
Aliphatic
Med

300,000 cP
@50°C
18 
100000

3300

214

61D
BR-5824
2.4

Aliphatic
Med

100,000 cP
@50°C

2

40000

2175

180

43D

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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