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Pearlbond™ 523

Technical Datasheet | Supplied by Lubrizol

Pearlbond™ 523 by Lubrizol is a linear, polycaprolactone-copolyester polyurethane grade. Exhibits very high crystallization rate and a very high thermoplasticity level. Possible applications of Pearlbond™ 523 include production of reactive hot melts (HMPUR), typically used in automotive interior parts, bookbinding, furniture, textile and footwear.

Pearlbond™ 523 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

OH Value

< 5 mg KOH/g

MQSA 47A

Crystallization

9 - 11 min

MQSA 12A

Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)

60 - 100 g/10 min

(At 170°C, 2.16 kg)

ISO 1133

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