Upchem(China) Co., Ltd.

PPDI

• Category :

  Agrochemicals

• Synonyms :

  PPDI;4,4'-phenyl isocyanate;Benzene 1,4-Diisocyanate;1,4-Phenylene Diisocyanate;1,4-Benzenediisocyanate;1,4-diisocyanato-benzen;1,4-Diisocyanatobenzene;1,4-diisocyanato-Benzene;benzene, 1,4-diisocyanato-;Isocyanic acid, p-phenylene ester;isocyanicacid,p-phenyleneester;Phenylene-1,4-diisocyanate;p-Phenylene isocyanate;p-phenyleneisocyanate;1,4-diisocyanatobenzene;p-Phenyl Diisocyanate;

• CAS NO :

  104-49-4

• EC NO :

  203-207-6

• Molecular Formula :

  C₈H₄N₂O₂

• Molecular Weight :

  160.1296

• Main Specifications :

• InChI :

  InChI=1/C8H4N2O2/c11-5-9-7-1-2-8(4-3-7)10-6-12/h1-4H

• Product description :

  We are offering the PPDI-based prepolymers and thermoplastic elastomer chips. PPDI (p-polyphenylene diisocyanate) is a structurally symmetric aromatic diisocyanate and is mainly used to produce polyurethane elastomeric products with a tighter hard segment and high-performance properties that conventional polyurethane products could not match. Besides the standard products listed below, we also provide the polyurethane products with specific properties requested by the customers.  

   

  PPDI-terminated Prepolymers (with low free PPDI)

  Prepolymer	TP1053	TP2052	TP2055	TP1176P
  NCO%	3.65-3.90	2.40-2.70	5.45-5.75	6.35-6.65
  Viscosity (212 °F, CPS)	500	120	300	350
  Color	White	White/Off White	White/Off White	White
  Appearance R.T.	Semi-solid	Semi-solid	Semi-solid	Semi-solid

   

  PPDI-based Thermoplastic Polyurethane

  PPDI-based thermoplastic polyurethanes are offered as pellets, are readily injection moldable and can

  l     Perform well where other polyurethane materials fail at the elevated temperatures

  l     Have high wear-resistance for extended seal life and excellent resistance to compression set

  TPU Product	TU-1050A	TU2050A	TU4050
  Specific Gravity	1.20	1.22	1.18
  Hardness（Shore A）	92	95	85
  Bayshore Resilience	60-63%	60%	60%
  Ultimate Tensile Strength (psi)	8300	8480	7590
  100% Modulus (psi)	1740	1760	1118
  300% Modulus (psi)	2900	3060	2175
  Elongation @ Break (%)	650	700	850
  Compression Set (70 h @ 212° F)	34-37%	36-39%	40-43 %
  Operating Temp. Range (°F)	- 54 to 285	-65 to 275	-65 to 275

  Drying and Injection Molding Conditions：

  1.      Drying conditions: 80-95 °C in a forced air oven for 4-6 hours

  2.      Setting for Injection Molding

  	Tip/°C	Middle/°C	Front/°C
  Range Suggested Setting	200 – 220 210	200 – 218 205	200 – 218 200

• Molecular Structure :