Chemical

Products

Poly Propylene Glycol 2000

Cas Number

25322-69-4

Other Names

PPG

The formula

HO(C3H6O)nC3H6OH

Introduction

Polypropylene glycol or polypropylene oxide is the polymer of propylene glycol. Chemically it is a polyether. The term polypropylene glycol or PPG is reserved for low to medium range molar mass polymer when the nature of the end-group, which is usually a hydroxyl group, still matters. The term "oxide" is used for high molar mass polymer when end-groups no longer affect polymer properties. In 2003, 60% of the annual production of propylene oxide of 6.6×106 tonnes was converted into the polymer.

Physical and Chemical Properties
Appearance Clear liquid
Viscosity cps at 25C 240
Molecular Weight 2000g/mole
Color Clear Colorless
Hydroxy Number mg KOH/g 108 to 116
Water contain % 0.05 max
Acid Number mg KOH/g 0.05 max
Color 75 max, APHA
Applications

PPG 2000D is recommended in manufacturing of filled and unfilled elastomers, sealants, adhesives and encapsulation compounds.

PPG 2000D is also used in prepolymers, high resilience foam and coatings.