Mixture for the production of acid-resistant sealing materials a

Details Mixture for the production of acid-resistant sealing materials a Mixture for the production of acid-resistant sealing materials a

1985-03-29

1986-06-24

Lieberman, Allan M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523424, 523468, 525481, 525485, 525488, C08K 304, C08L 6106, C08L 6300

Patent

active

045968403

ABSTRACT:
Mixture for the production of acid-resistant sealing materials or acid-resistant impregnating materials based on epoxy resins, resols, hardening catalysts and further customary additives, which are in the form of a cement or impregnating solution and contain, as essential constituents, (A) at least one bifunctional, low-molecular epoxy resin having an epoxide equivalent weight between 87 and 1,000, (B) at least one resol formed from at least one trifunctional phenol and formaldehyde in a molar ratio of 1:1 to 1:3, having a viscosity between 50 and 2,500 mPa.s at 20.degree. C. and having a solids content of at least 50% by weight, and (C) hardening catalysts, cements also containing (D) fillers, in addition, and a process for the preparation of hardening products from the compounds. Thus, for example, cements or impervious, initially porous shaped articles which are resistant to solvents and weak acids and which have a low shrinkage after processing, are obtained.

REFERENCES:
patent: 3720648 (1973-03-01), Guldenpfennig
patent: 3840483 (1974-10-01), Guldenpfennig
patent: 4367318 (1983-01-01), Ishimura et al.
patent: 4481311 (1984-11-01), Hesse et al.

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