Material formulation for over mold cover fiber optic cable
AssigneeCorning Optical Communications LLC
InventorsAnil Bastola, Wei Liu, Ziwei Liu
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Abstract
A polyurethane composition is provided. The polyurethane composition includes a first part of a first polytetramethylene oxide, a second polytetramethylene oxide, and a castor oil based polyol. The second polytetramethylene oxide has a higher viscosity than the first polytetramethylene oxide. The polyurethane composition also includes a second part of methylene diphenyl diisocyanate. Also provided is a fiber optic cable assembly incorporating the polyurethane composition as an overmold. The overmold has a glass transition temperature of less than −40° C. measured according to differential scanning calorimetry. Further provided is a method of applying an overmold to a fiber optic cable assembly.
Claims13
A polyurethane composition, comprising:
- a first part, comprising:
- a first polytetramethylene oxide having a viscosity of between 0.5 cP to 1.5 cP at a temperature of 65° C.;
- a second polytetramethylene oxide having a viscosity of between 3.5 cP and 4.5 cP at a temperature of 65° C.;
- and
- a castor oil based polyol;
- and
- a second part comprising methylene diphenyl diisocyanate or a prepolymer thereof.
Dependencies are inferred from the claim text.