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B-251 Aromatic polyurethane acrylate

B-251 is a bifunctional polyurethane acrylate resin with medium molecular weight and good cured film flexibility.
Availability:
Quantity:
  • B-251

  • Bossin

Product specifications

Items

Specification

Testing methods

Appearance

Clear liquid

Visual inspection

Color(APHA)

50

GB/T 3143-1982

(Platinum-Cobalt Method)

Viscosity(cps/60℃)

2000-5000

GB/T 2794-2013

Acid Value(mgKOH/g)

≤3.0

GB/T 6743-2008

Specific Gravity(g/cm3

1.09±0.02

GB/T 6750-2007

Refractive Index(25℃)

1.496±0.005

GB/T 614-2006

Efficient Content(%)

100

Theoretical values

Functionality

2

Theoretical values

Characteritics:

  • Medium molecular weight

  • Good flexibility for the cured film

Applications: 

  • UV top varnish (various plastic substrates and plastic silver paint)

  • Plastic vacuum electroplating primer & top varnish

  • UV printing varnish

  • UV ink

Shelf life:

  • Store at room temperature sealed away from light, shelf life: 6 months.

Packaging:

  • 20L Packing Drum & 200L Packing Drum.

Notes:

  • B-251 will crystallize when placed at low temperature for a long time, and will be variable and transparent when heated.


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