Gas-impermeable polyurea polymer systems

Details Gas-impermeable polyurea polymer systems Gas-impermeable polyurea polymer systems

1992-02-14

1993-11-23

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525127, 525238, 528 64, C08F 830

Patent

active

052645240

ABSTRACT:
Block copolymers possessing good gas impermeability, solvent resistance, and physical properties are prepared by forming a prepolymer through the reaction of a diisocyanate compound with a diamine compound, and thereafter reacting the prepolymer with an amine-terminated butadiene-acrylonitrile oligomer.

REFERENCES:
patent: 4331786 (1982-05-01), Foy et al.
patent: 4618706 (1982-10-01), Scholl et al.
patent: 4663483 (1987-05-01), Hergenrother et al.
patent: 5019608 (1991-05-01), Shah
patent: 5059666 (1991-10-01), Harris

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