Air-drying stains and finishing coats for wood for exterior and

Details Air-drying stains and finishing coats for wood for exterior and Air-drying stains and finishing coats for wood for exterior and

1988-05-19

1990-04-24

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Stains

106227, 106228, 106241, 106251, C09K 300, C08L 9100

Patent

active

049197215

ABSTRACT:
The invention relates to air-drying and finishing coats for wood for exterior and interior finishes, comprising the so-called nonvolatile matter, which represents an intimate mixture of modified natural oils, pigments, extenders and small proportions of varnish additives, and a low-boiling petroleum hydrocarbon, which is suitable as a solvent and is present in an amount of .ltoreq.15% by weight, based on the total amount.
An air-drying stain for exterior finishes is to be provided, with which a spotty or mottled appearance of the dried surface is avoided reliably even after a single coat of paint.
This objective is accomplished by a stain, the mixture of chemically modified natural oils of which have a consistency, so that the efflux time from a DIN 53,211 4 mm viscosity cup is between 28 and 35 seconds, and the extender of which comprises a fine, cryptocrystalline, amorphous silicon dioxide, in which the proportion of particles with a particle size less than 40 .mu.m is greater than 95%.

REFERENCES:
patent: 2194295 (1940-03-01), Clarke
patent: 2674538 (1954-04-01), Berglund
patent: 2717214 (1955-09-01), Marotta et al.
patent: 2820711 (1958-01-01), Kiebler et al.
"The Technology of Wood Stains & Fillers for Use with Lacquers", Silverstein, Mech. Eng., vol. 48, Nov. 1926, pp. 1293-1296.

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