Polyurethane composition having easy-reentry property

Details Polyurethane composition having easy-reentry property Polyurethane composition having easy-reentry property

1975-11-24

1977-06-14

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 18TN, 260 312N, 260 314R, 260 318R, 260 318G, 260 318W, 260 775AC, 428373, C08K 511

Patent

active

040296261

ABSTRACT:
This invention is directed to liquid polyurethane compositions made from a prepolymer and a curing solution. The prepolymer is made from organic diisocyanate, aliphatic triol, and liquid organic plasticizer material compatible with the composition and having an NCO content of about 1.2-2.5%. The prepolymer is cured with a solution composition of urethane curing agent, liquid organic plasticizer compatible with the cured composition, and an organo-metallic catalyst effective at ambient temperature. The cured polyurethane composition is a resilient solid which is waterproof and crumbles under shearing force applied to the surface or interior of the solid to permit easy breakaway or reentry into a cable splice or a surface which is encapsulated, embedded or coated with said solid.

REFERENCES:
patent: 3639952 (1972-02-01), Thompson et al.

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