Water repellant for wood

Details Water repellant for wood Water repellant for wood

1989-06-09

1993-04-06

Bleutge, John C.

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...

524591, C08K 310

Patent

active

052004570

ABSTRACT:
A composition and method is described for making wood and other porous articles water repellant. The composition is an aqueous acidic solution or an aqueous acidic emulsion of a polymeric ingredient and an aluminum halohydrate, preferably aluminum chlorohydrate which is dissolved in the solution or emulsion. The polymers which are useful in this invention are glyoxal-urea polymers and self-crosslinking acrylic polymers. The polymers are chemically reactive with the cellulose or other components in the wood under acidic conditions upon drying. Preferably, the composition avoids the presence of toxic chromium compounds and salts which can interfere with the effectiveness of the composition. The composition offers enhanced water repellency and resists leaching due to the combination of the resin with the aluminum halohydrate.

REFERENCES:
patent: 3900620 (1975-08-01), Gilman et al.
patent: 4192791 (1980-03-01), Self
patent: 4285997 (1981-08-01), Vasishth et al.
patent: 4335109 (1982-06-01), Hill
patent: 4790912 (1988-12-01), Holtzman et al.

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