Specification for copper naphthenate and copper naphthenate concentrates

2015 ◽  
Keyword(s):  
Copper Naphthenate

Dual borate and copper naphthenate treatment of bridge timbers – potential cost savings by various performance enhancements

2017 ◽  
Vol 13 (3) ◽  
pp. 122-128 ◽  
Author(s):  
Jeff D. Lloyd ◽  
Christian Brischke ◽  
Richard Bennett ◽  
Adam Taylor
Keyword(s):  
Cost Savings ◽  
Potential Cost ◽  
Copper Naphthenate

THE RESISTANCE TO WEATHERING OF COTTON DUCK TREATED WITH CERTAIN COMPOUNDS OF IRON, CHROMIUM, AND COPPER

1948 ◽  
Vol 26f (1) ◽  
pp. 24-35 ◽  
Author(s):  
Muriel W. Weatherburn ◽  
C. H. Bayley
Keyword(s):  
Iron Oxide ◽  
Breaking Strength ◽  
Strength Loss ◽  
Significant Loss ◽  
Photochemical Degradation ◽  
Copper Carbonate ◽  
Metallic Oxide ◽  
Soil Burial ◽  
Treated Sample ◽  
Copper Naphthenate

Unbleached cotton tentage duck was impregnated with chromic oxide, copper carbonate, and ferric oxide, both singly and in mixtures, each metal being present in concentration of approximately 1% as metallic oxide, and also in the form of naphthenates in equivalent concentration. The rot resistance of the treated samples was determined by measuring the loss of breaking strength on soil burial after leaching in water and after outdoor weathering for four months. Photochemical degradation on weathering was determined by measuring the loss of breaking strength and increase in cuprammonium fluidity. The decrease in metal content on weathering was also measured.Samples treated with chromium and iron in inorganic form, used singly and together, showed no resistance to soil burial and very slight resistance when the metals were present as naphthenates. All treatments containing copper produced substantial resistance to soil burial, the mixtures producing greater resistance than the single compounds; the resistance resulting from treatment with chromium plus copper and with chromium plus copper plus iron mixtures was greater than that from the corresponding copper plus iron treatments. On the whole, the inorganic treatments produced more resistance to soil burial after leaching than the organic treatments but, after weathering, the copper alone and copper plus iron treatments produced less resistance than the corresponding naphthenate treatments.All the inorganic treatments containing chromium exerted a marked protective effect against deterioration resulting from weathering as judged by breaking strength losses and increases in cuprammonium fluidity.The naphthenate treatments containing chromium and the iron oxide and iron naphthenate treatments afforded some protection with respect to breaking strength loss but produced fluidity increases approximately the same as that of the untreated fabric. Similar results were obtained with the copper carbonate plus iron oxide treatment.The samples treated with copper carbonate and copper naphthenate showed breaking strength losses approximately the same as that of the untreated control but gave evidence of enhanced degradation as judged by the fluidity data.Losses of chromium on weathering were negligible in all cases while losses of iron ranged from zero to 34%. Complete loss of copper occurred in the copper carbonate treated sample and a slightly lower loss (85%) in the copper plus iron treated sample. In the presence of chromium and chromium plus iron, the losses of copper were reduced to 34% and 54% respectively. Similar trends were observed with the naphthenate treatments but the losses were much lower in all cases, ranging from no significant loss to a loss of 48%.

scholarly journals Sodium Fluoride/Copper Naphthenate Toxicosis in Cattle

2007 ◽  
Vol 19 (3) ◽  
pp. 305-308 ◽  
Author(s):  
Brad M. DeBey ◽  
Binod Jacob ◽  
Fred W. Oehme ◽  
Paula Imerman
Keyword(s):  
Sodium Fluoride ◽  
Copper Naphthenate

scholarly journals Comparison of durability of treated wood using stake tests and survival analysis

2021 ◽  
Vol 67 (1) ◽  
Author(s):  
Ikuo Momohara ◽  
Haruko Sakai ◽  
Yuji Kubo
Keyword(s):  
Survival Analysis ◽  
Treated Wood ◽  
Scientific Basis ◽  
Wilcoxon Test ◽  
Conventional Procedure ◽  
Kaplan Meier ◽  
Significant Difference ◽  
Copper Naphthenate ◽  
Alkaline Copper Quaternary ◽  
The Relationship

AbstractThe stake test is widely used to evaluate the efficacy of wood preservatives. This test monitors the deterioration level observed in treated stakes partially inserted into the ground. The results are conventionally expressed as the relationship between deterioration levels and exposure periods. The preservative efficacy is compared among the stake groups treated with different retention levels based on the test results; however, there is no scientific basis for the comparison. We applied survival analysis to the conventional stake test to include a scientific basis to the test. Stakes impregnated with different types and retention levels of preservatives were subjected to deterioration at two test sites for approximately 30 years. The deterioration levels were monitored according to the conventional procedure and survival analysis was applied to the monitored data. Kaplan–Meier plots of the survival probabilities against the exposure periods indicated that there is a significant difference between the durability of the stakes treated with alkylammonium chloride (AAC-1) at K2 and K3 retention levels, whereas no significant difference was observed between those at K3 and K4 retention levels. Contrastingly, emulsified copper naphthenate (NCU-E) was found to be a reliable preservative, and the stakes impregnated with NCU-E showed a significant increase in durability in accordance with preservative retention. Alkaline copper quaternary (ACQ-1) also appeared to be a reliable preservative; however, the increase in stake durability after ACQ-1 treatment differed between the test sites. These results were verified using the modified Gehan–Breslow–Wilcoxon test with Holm’s p adjusting method.

THE EFFECT OF WEATHERING ON VARIOUS ROTPROOFING TREATMENTS APPLIED TO COTTON TENTAGE DUCK

1947 ◽  
Vol 25f (1) ◽  
pp. 92-109 ◽  
Author(s):  
C. H. Bayley ◽  
Muriel W. Weatherburn
Keyword(s):  
Ferric Oxide ◽  
Water Resistance ◽  
Breaking Strength ◽  
Strength Loss ◽  
Chemical Degradation ◽  
Pronounced Increase ◽  
Zinc Compounds ◽  
Soil Burial ◽  
Copper Naphthenate ◽  
Wax Coating

Cotton tentage duck treated with ferric oxide–chromic oxide ('mineral khaki'), copper carbonate–ferric oxide ('copper–iron'), cuprammonium, cutch–cuprammonium, copper 8-quinolinate, copper glyoxime, 2,2′-dihydroxy-5,5′-dichlorodiphenylmethane, zinc dimethyldithiocarbamate, copper naphthenate, copper hydroxynaphthenate, zinc naphthenate, and mercuric naphthenate, showed varying degrees of breaking strength loss when subjected to outdoor weathering during the summer months. The losses were in no case greater than that of the untreated fabric, and certain treatments, such as mineral khaki and cutch–cuprammonium, gave considerable protection against loss in breaking strength. With copper naphthenate, copper hydroxynaphthenate, and mercuric naphthenate the degree of chemical degradation as measured by cuprammonium fluidity was somewhat greater than that of the untreated fabric. The presence of a waterproofing treatment consisting of a mixture of petroleum-base waxes in addition to the rotproofing treatments usually resulted in increased breaking strength loss. The water resistance of the waxed samples showed a slight to pronounced increase on weathering. In general there was considerable loss of rotproofer as a result of weathering; with the copper compounds this loss was of the order of 37 to 90%, but was reduced to 6 to 44% by the presence of wax. Weathering produced an almost complete loss of the two zinc compounds, 2,2′-dihydroxy-5,5′-dichlorodiphenylmethane, and mercuric naphthenate. Losses of metal from chromium–iron proofings were negligible even in the absence of wax proofing. The degree of rot resistance as judged by soil burial was greatest in the fabrics treated with copper, and was increased by the presence of wax. The water resistance of samples subjected to soil burial was frequently decreased before the occurrence of any marked loss in breaking strength; this indicates microbiological attack on the wax coating prior to attack on the cotton fabric.

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