Priming compositions for a base of cement mortar or concrete

Details Priming compositions for a base of cement mortar or concrete Priming compositions for a base of cement mortar or concrete

1981-02-13

1982-12-14

Lusignan, Michael R.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4274071, 428341, 428500, 428540, 525 60, 525 61, B05D 302

Patent

active

043638368

ABSTRACT:
The invention provides an improved method for priming the surface of a cement mortar or concrete base whereby the adhesive bonding strength of the overcoat finishing with a cement mortar or paste as well as the waterproofing effect of the overcoat layer can be greatly improved by use of a novel aqueous priming composition. The priming composition contains, as an essential ingredient as dissolved in an aqueous medium, a modified polyvinyl alcohol characteristic in the side chains etherified with long-chain alkyl groups such as lauryl and stearyl in a limited mole fraction. The priming composition may also contain an emulsion of a synthetic resin mainly composed of vinyl acetate. The effectiveness of the modified polyvinyl alcohol is so outstanding that the inventive priming composition may contain only 1% by weight or more of the modified polyvinyl alcohol based on the total solid content, the balance being the synthetic resin dispersed as the emulsion.

REFERENCES:
patent: 4169088 (1979-09-01), Hansen

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