High retention wood preservative composition

Details High retention wood preservative composition High retention wood preservative composition

1976-02-12

1978-04-18

Lusignan, Michael R.

Stock material or miscellaneous articles

Composite

Of wax or waxy material

21 7, 106 2, 424 81, 424 82, 424 83, 427393, 427441, 428511, 428514, B05D 302, B05D 118, B32B 904, B32B 2308

Patent

active

040852512

ABSTRACT:
A wood preservative composition having deep penetration capability, leaving a clean surface and imparting high retention of active preservative within the wood, which consists primarily of (a) an organic wood preservative agent, (b) a hydrophobic agent, and (c) small amounts of an amorphous vinylic-type polymer, in a penetrating organic solvent. The preservative may be pentachlorophenol, an oxathiin compound or other preservative preferably of low mammalian toxicity. The hydrophobic agent may be fatty acids and their esters, fatty alcohols and paraffin waxes. The amorphous polymer may be a polystyrene, a polymethylmethacrylate, a polyvinylformal, an atactic polypropylene or other such amorphous polymer. The penetrating solvent may be most suitably chloroform, methylene chloride, trichloroethylene or liquefied petroleum gas, although others may be used. Solutions suitable for deep penetration pressure treatment are preferred. The active preservative penetrates and becomes immobilized within the penetrated wood microstructure.

REFERENCES:
patent: 3200003 (1965-08-01), Bescher
patent: 3600408 (1971-08-01), Bursack et al.
patent: 3967011 (1976-06-01), Dunn et al.
Chemical Abstracts, vol. 73, 1970, section 86916v.

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