Unilink® 1729 is a high-molecular-weight, low-monol polyether polyol that exhibits excellent low-temperature flexibility, hardness, shock absorption, and resistance to heat, abrasion, solvents, and hydrolysis. It is recommended for use in polyurethane applications, cast elastomers, sealants, epoxy flexibilizers, isocyanate-terminated prepolymers, PU rigid foam, molding foam, and automobile seat cushions.
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Unilink® 1729 is a specially designed low-monol polyether polyol acidified with low-level phosphoric acid prepared by taking low-molecular-weight polyol, polyamine, or compound with active hydrogen carried out with ring-opening polymerization on the initiator. It exhibits excellent low-temperature flexibility and hydrolysis resistance, making it the optimal choice for a variety of applications, including polyurethanes, cast elastomers, sealants, epoxy flexibilizers, isocyanate-terminated prepolymers, PU rigid foams, molding foams, and automobile seat cushions. It also has exceptional abrasion resistance, heat resistance, hardness, solvent resistance, and shock absorption.
Color: Max 50 Pt-Co
Acid number: Max 0.02 mg KOH/g
Hydroxyl number: 26.5–29.5 mg KOH/g
Water wt.: Max 0.03%
Bulk density: 8.4 lb/gal
Specific gravity at 20°C: 1.01
Appearance: Clear, viscous liquid
Flash point (PMCC), °C: 213
Viscosity at 25°C (cps): 980
Primary Chemistry: Polyether Polyol
High molecular weight
Low monol polyether polyol
Acidified with low-level phosphoric acid
Good low-temperature flexibility
Excellent hydrolysis resistance
Abrasion resistance
Heat resistance
Hardness
Solvent resistance
Shock absorption
Low viscosity of the raw material system
Easy to dissolve with isocyanate
Breakability at low temperatures
Damage from shock and stress
Polyurethanes
Cast elastomers
Sealants
Epoxy flexibilizers
Isocyanate terminated prepolymers
PU rigid foams
Soft foams
Molding foam products
Automobile seat cushions
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