Two-component polyurethane sealants, and a mixing method therefo

Details Two-component polyurethane sealants, and a mixing method therefo Two-component polyurethane sealants, and a mixing method therefo

1991-12-04

1993-11-23

Welsh, Maurice J.

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...

524748, 524753, C08K 501

Patent

active

052644863

ABSTRACT:
2-component polyurethane sealants for the direct glazing of motor vehicles, comprising (A) a pasty polyurethane component containing a polyurethane prepolymer having free isocyanate groups, and a curing agent, and (B) a pasty solvent-containing component, where component (A) contains at least one latent, solvent-activatable curing agent which can be activated by means of solvents, and component (B) contains a polar, aprotic solvent and water reversibly bonded to a carrier substance which liberates the water in a delayed manner after components (A) and (B) have been mixed.

REFERENCES:
patent: 4063002 (1977-12-01), Wilson, Jr.
patent: 4318959 (1982-03-01), Evans et al.
patent: 5102969 (1992-04-01), Scheffler et al.

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