Aqueous hardeners for epoxy resin systems

Details Aqueous hardeners for epoxy resin systems Aqueous hardeners for epoxy resin systems

1996-07-26

1998-12-29

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523409, 564475, C08K 320, C08L 6302

Patent

active

058543120

ABSTRACT:
Described are aqueous emulsions of active amino groups-displaying epoxide adduct hardeners for curing epoxy resin systems, which are obtained by converting an aqueous solution of a conventional hardener, which contains reactive amino groups and can emulsify the epoxy resin used for adduct formation, under increase of the amine-H-equivalent weight, to an emulsion by mixing with an epoxy resin having a functionality of 1,2-3,5. The viscosity generally is 5 to 40 Pa.s. The values lie on an emulsion viscosity curve with a rising and falling viscosity profile. The hardeners are especially suitable for curing aqueous epoxy resin systems and for application together with epoxy resins as additive for hydraulic binders such as cement.

REFERENCES:
patent: 4022946 (1977-05-01), Cummings
patent: 4269742 (1981-05-01), Goeke et al.
patent: 4352898 (1982-10-01), Albers
patent: 4569971 (1986-02-01), Sasse et al.
patent: 5096556 (1992-03-01), Corrigan et al.
patent: 5204385 (1993-04-01), Naderhoff
European Search Report dated Dec. 4, 1992.
International Search Report dated Jun. 29, 1993.

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