Resin bleed after painting from radiata pine boards treated with tributyltin naphthenate (light organic solvent preservative) or copper, chromium and arsenic compounds (water-borne preservative)

Dawson, Bernard S. W.; Kroese, Hank W.; Hong, S. O.; Lane, Gregg

doi:10.1007/s00107-001-0255-z

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Naphtenic acids were also employed for the protection of wood [185][186][187]. The nomenclature refers to all carboxylic acids present in crude oil.…”

Section: Wood Surface Modification By Esterification Reactions Using ...mentioning

confidence: 99%

“…They are alkyl-substituted cycloaliphatic monocarboxylic acids, having the carboxylic group usually attached to the side chain than directly to the cycloalkane ring, and the naphtene moiety consists of cyclopentane and cyclohexane derivatives, although the mixtures of naphtenic acids may also contain low amounts of fatty acids, hydroxy and dibasic acids, phenolic compounds, sulfur compounds and water [188]. Wood modification with naphtenic acids is applied mainly using metal salts (sodium [185] or copper [186]), but organic derivatives (tributyltin naphtenate [187]) were also employed. Due to the chemical reactions that occurred in the wood, this treatment has proved to be effective against insect attack, weathering and UV radiation.…”

Section: Wood Surface Modification By Esterification Reactions Using ...mentioning

confidence: 99%

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Wood Surface Modification—Classic and Modern Approaches in Wood Chemical Treatment by Esterification Reactions

Teacă¹,

Tanasă²

2020

Coatings

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Wood surface modification is a comprehensive concept which, in time, turned out to be as successful as challenging when it comes to improve the resistance of wood during its life cycle in both indoor and outdoor applications. The initial approaches have aimed at simple methods with immediate results. Nowadays, the paradigm has slightly changed due to the scientific and technical advances, and some methods has become intermediate stages in more complex processes, after being used, for long time, as stand-alone procedures. The esterification was employed as a convenient method for wood surface modification due to the high amount of free hydroxyl groups available at the surface of wood and other lignocellulosic materials. Therefore, different esterification approaches were tested: activated condensation with carboxylic acids (monocarboxylic, as well as dicarboxylic acids, fatty acids, etc.) in the presence of condensation activating agents (such as trifluoroacetic anhydride); reaction with β-halogen-substituted carboxylic acids; esterification using carboxylic acids derivatives (acyl chlorides, anhydrides) or even multifunctional carboxylic acids (i.e., tricine). Thus, wood with improved dimensional stability and weathering resilience, higher fire resistance, enhanced hydrophobic character, and mechanical durability was obtained. This paper offers an overview of some of the most recent advances reported in the field, presented in a systematic manner, using the type of reaction as classification criterion. The main improvements will be outlined in a critical assessment in order to provide an useful tool for a wise choice in future applications.

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“…Naphtenic acids were also employed for the protection of wood [185][186][187]. The nomenclature refers to all carboxylic acids present in crude oil.…”

Section: Wood Surface Modification By Esterification Reactions Using ...mentioning

confidence: 99%

Section: Wood Surface Modification By Esterification Reactions Using ...mentioning

confidence: 99%

Wood Surface Modification—Classic and Modern Approaches in Wood Chemical Treatment by Esterification Reactions

Teacă¹,

Tanasă²

2020

Coatings

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“…Dawson et al (2001) measured adhesion failure in paint coating systems based on an oilbased alkyd primer, and developed equations which described the relationship between LOSP uptake level and rate of solvent loss over defined ranges of solution uptake values. Dawson et al (2002) have also investigated the extent and intensity of resin bleeding from preservativetreated and painted timber.…”

Section: Introductionmentioning

confidence: 99%

Primer blocking and pre-service adhesion of acrylic coating systems applied to light organic solvent preservative (LOSP) treated radiata pine sapwood boards

Dawson¹,

Kroese²,

Hong³

2002

Holz als Roh- und Werkstoff

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Solvent levels in radiata pine boards treated with light organic solvent preservative and coated with either primer only or one of four mainly-acrylic paint systems were monitored over a 51 day period. Primer blocking (the sticking together of paint coatings) and paint adhesion were also assessed. Blocking was observed with acrylic primers but not with an oil-based primer. Paint adhesion differed among the four paint systems and was influenced by residual solvent level. No adhesion failure was observed in a system incorporating a hybrid primer (a paint possessing characteristics of water-based and solvent-based paints). Two other acrylic-primed systems exhibited failure in one or more layers but in one case this was restricted to only the first 14 days. For the other acrylic primed system, greater adhesion failure over a longer period was attributed to an artifact of the application method. A system incorporating an alkyd primer and alkyd undercoat showed greatest adhesion failure over the whole 51-day period. An exponential model was derived to describe the rate of solvent loss from treated boards. The coefficient of determination (R 2 ) for the relationship between residual solvent level and time was 0.98. Rate of solvent loss was dependent on the magnitude of the solvent uptake level. For an uptake level of 34 L/m 3 , the rate of loss was 2.3 L/m 3 /day after three days; 1.8 L/m 3 /day after 28 days; and 0.1 L/m 3 /day after 51 days. Within 3 to 14 days of preservative treatment, primed 20 mm thick boards can be expected to retain 35-83% of the absorbed solution. For 34 mm boards, retention levels will be higher (42-87%).Haftverhalten von Grundierung und Anstrichsystemen auf Acrylbasis nach Behandlung von Kiefernbrettern mit LOSP (Schutzmittel in leichten organischen Lösemitteln) Kiefernbretter (P. radiata) wurden mit Holzschutzmitteln in leichten organischen Lösemmitteln behandelt und grundiert. Ein Teil der grundierten Bretter wurde danach mit einer von vier Acrylfarbtypen bestrichen. Die Löse-mittelaufnahme wurde über einen Zeitraum von 51 Tagen gemessen. Ebenso wurde die Haftfestigkeit der Anstriche und der Einfluß der Grundierung auf das Verkleben der Bretter abgeschätzt. Letzteres wurde bei Grundierungen auf Acryl-jedoch nicht auf Ö l-Basis festgestellt. Die Farbhaftfestigkeit unterschied sich in den vier Systemen und war beeinflußt von der Restmenge an Lösemitteln in den Brettern. Keine Haftungsfehler ergaben sich bei einem System mit Hybrid-Grundierung (mit einer Charakteristik sowohl von wasserlöslichen als auch von Lösemittellösli-chen Anstrichen). Zwei andere Acryl-Systeme zeigten sich Fehler in einer oder zwei Farbschichten, jedoch war dies in einem Fall auf die ersten 14 Tage beschränkt. Bei anderen Acrylfarben konnten Haftungsfehler auf eine fehlerhafte Auftragmethode zurückgeführt werden. Ein System auf Alkydbasis zeigte die größten Haftungsfehler über die Dauer von 51 Tagen. Eine exponentielle Gleichung wurde entwickelt, die die Abgabe der Lösemittel aus den behandelten Brettern beschreibt. Der...

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The effect of processing and treatment parameters on the discoloration of painted joinery due to resin exudation from knots

Nussbaum

2004

Surface Coatings International Part B: Coatings Transactions

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Resin bleed after painting from radiata pine boards treated with tributyltin naphthenate (light organic solvent preservative) or copper, chromium and arsenic compounds (water-borne preservative)

Cited by 6 publications

References 7 publications

Wood Surface Modification—Classic and Modern Approaches in Wood Chemical Treatment by Esterification Reactions

Wood Surface Modification—Classic and Modern Approaches in Wood Chemical Treatment by Esterification Reactions

Primer blocking and pre-service adhesion of acrylic coating systems applied to light organic solvent preservative (LOSP) treated radiata pine sapwood boards

The effect of processing and treatment parameters on the discoloration of painted joinery due to resin exudation from knots

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