Polyurethane composition with reduced water to prepolymer mix ra

Details Polyurethane composition with reduced water to prepolymer mix ra Polyurethane composition with reduced water to prepolymer mix ra

1990-04-05

1991-08-06

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523130, 523131, 524317, 524361, 524871, 524873, C08G 1883

Patent

active

050378791

ABSTRACT:
A hydrophilic polyurethane prepolymer in a compatible, water-miscible solvent or solvent blend having a solids content of greater than about 10 and less than about 50 percent prepolymer in organic solvent that reacts with water at about a 1:1 ratio by volume to produce an excellent gel for use in sealing water containing structures and soil stabilization. In the cure process, the compositions of the present invention expand less than 50%, and preferably less than 30%.

REFERENCES:
patent: 3719050 (1973-03-01), Asao et al.
patent: 3985688 (1976-10-01), Speech
patent: 4315703 (1982-02-01), Gasper
patent: 4383079 (1983-05-01), Gasper et al.
patent: 4749592 (1988-06-01), Gasper et al.

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