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B-221X Aliphatic polyurethane acrylate

B-221X is a bifunctional polyurethane acrylate with medium molecular weight, no organic tin, and a polycarbonate structure. It has a fast curing speed, is resistant to water boiling, and is resistant to yellowing.
Availability:
Quantity:
  • B-221X

  • Bossin

Product specifications

Items

Specification

Testing methods

Appearance

Clear liquid

Visual inspection

Color(APHA)

80

GB/T 3143-1982

(Platinum-Cobalt Method)

Viscosity(cps/60℃)

3000-6000

GB/T 2794-2013

Acid Value(mgKOH/g)

≤2.0

GB/T 6743-2008

Specific Gravity(g/cm3

1.07±0.02

GB/T 6750-2007

Refractive Index(25℃)

1.478±0.005

GB/T 614-2006

Efficient Content(%)

100

Theoretical values

Functionality

2

Theoretical values

Characteritics:

  • Medium molecular weight

  • No organotin

  • Faster curing speed

  • Water boiling resistance

  • Yellowing resistance

Applications: 

  • Plastic UV coating

  • Vacuum plating UV primer

Shelf life:

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

Packaging:

  • 20L Packing Drum & 200L Packing Drum.

Notes:

  • B-221X will crystallize when placed at low temperature for a long time, and will be variable and transparent when heated.


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