Project Description

 

NDI based PU elastomer is well-known for its exceptional heat resistance, oil resitance and dynamic property. But NDI terminate prepolymer is unstable, it must be use out within 45 min. So only the sophisticated staff can produce NDI based PU elastomer with the special machine.

NAPRENE 25 is a stable polyester-based, NDI terminated urethane prepolymer. This new prepolymer has highly stability. It is easy to be handled and operated, just like other TDI and MDI terminate prepolymer. Cured with the mixture of 1.4 Butandiol and polyol, you can synthetisize different hardness NDI base urethane elastomer.

PHYSICAL FORM SOLID
COLOR WHITE
ODOR SLIGHT ISOCYANATE
AVAILABLE ISOCYANAT E, % 4. 55-4.85
V ISCOSIT飞 BROOKFIELD, CP
@ 203 °F (95 ℃)
1800
OPERATION STA BILITY
(CHA NGE OF NCO% AND VISCOSITY                 AT 100℃ FOR  7  HOURS ) NCO%: FROM 4.68 TO 4. 67

VISCOSITY: FROM 1800 TO 1800

STORAG E STA BILITY  KEEP IT IN CLOSED PACKAGE.
PREVENT IT FROM MOISTURE AND HEAT. THE SHELF LIFE IS 6
MONTHS
SOLUBILITY SOLUBLE  IN  AROMATI C  OR CHLORINATED HY DROCATBONS, KETONES, AND ESTERS.

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