Emulsifyable air drying urethane alkyds

Athawale, Vilas D.; Nimbalkar, Ramakant V.

doi:10.1016/j.porgcoat.2009.09.017

Cited by 16 publications

(6 citation statements)

References 14 publications

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“…Unlike TEA, this neutralizing agent will not evaporate and will permanently be present as a salt in the dried film. Without the intention to be complete, which is beyond the scope of this mini‐review merely focusing on the different classes of PUDs, we refer the reader for more information on air or oxidatively drying PUDs to the literature …”

Section: Crosslinkable Polyurethane Dispersionsmentioning

confidence: 99%

Water‐based polyurethane dispersions

Tennebroek

Casteren

Swaans

et al. 2018

Polymer International

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A general overview is presented of the most relevant and commercially available aqueous polyurethane dispersions (PUDs) and their typical properties. This paper starts with the chemistry and the general composition of standard PUDs and subsequently urethane–acrylic hybrid dispersions are presented with special emphasis on the relation between the obtained morphology and the final material properties. In a section regarding crosslinkable PUDs, the two most frequently applied curing mechanisms are mentioned: firstly the introduction of carbonyl groups into PUDs which can be used for curing at room temperature with amino functional compounds by formation of azomethine moieties, and secondly the introduction of unsaturated fatty acid moieties into PUDs, which enable oxidative curing at ambient conditions. The paper then continues with a section on UV‐curable, acryloyl‐functional PUDs, followed by a section on an interesting new development, namely water‐based polyurethanes with special optic and haptic properties. The paper ends with a section on recently reported modifications of PUDs, including carbon nanotube‐ and graphene‐modified PUDs, PUDs modified with silane coupling agents and PUDs modified with biodegradable moieties. © 2018 Society of Chemical Industry

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Section: Crosslinkable Polyurethane Dispersionsmentioning

confidence: 99%

Water‐based polyurethane dispersions

Tennebroek

Casteren

Swaans

et al. 2018

Polymer International

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“…If unsaturated moieties are introduced in the structure of a polyurethane or poly(urethane-urea) polymer it can be crosslinked either by UV or through oxidative drying (self-crosslinking) [50] which leads to improved mechanical strength and chemical resistance of films or coatings produced from such APUD or APUAD dispersions. Several papers were dealing with synthesis of such dispersions where acrylic monomers with hydroxyl functionality were used to terminate polymer backbone [51,52] or unsaturated diols (usually alkyd-type unsaturated poly-esters) [53][54][55][56][57][58][59] were applied as polyol components. The authors of [52] synthesized APUD containing anionomers terminated with unsaturated bonds and exhibiting different functionalities in UV-curing by applying ethylenediamine and diethylenetriamine as prepolymer-ionomer chain extending agents, and investigated the effect of the polymer functionality on properties of APUD and corresponding UV-cured films.…”

Section: Crosslinking Through Double Bondsmentioning

confidence: 99%

Developments in aqueous polyurethane and polyurethane-acrylic dispersion technology. Part II. Polyurethane-acrylic dispersions and modification of polyurethane and polyurethane-acrylic dispersions

Kozakiewicz

2016

Polimery

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Part I of the review that concerns the developments in aqueous polyurethane dispersions (APUD) and aqueous polyurethane-acrylic dispersions (APUAD) technology was recently published. In the present paper (constituting Part II of the review) synthesis and characterization of aqueous polyurethane-acrylic dispersions (APUAD) which have hybrid particle structure and produce films and coatings exhibiting much better properties than those produced from blends of APUD and acrylic polymer dispersions are reviewed based on recent literature data. Possibilities of crosslinking the films and coatings produced from APUD and APUAD and of obtaining filled composites, specifically nanocomposites, from those dispersions are also demonstrated, and currently reported applications of those dispersions are briefly summarized. The most important developments and areas where further research may still be required are suggested with regard to synthesis and characterization of APUAD as well as to crosslinked and filled systems involving APUD or APUAD.

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“…Most waterborne wood coatings are polyurethane coatings [7]. However, the physical and chemical properties of one-component polyurethane products, such as its water resistance [8,9] and chemical resistance [10,11], are vastly inferior to those of two-component products [12]. Therefore, two-component waterborne polyurethane coatings have become the main substitute of solvent coatings, and research into two-component waterborne polyurethane coatings has gradually become an industry hotspot.…”

Section: Introductionmentioning

confidence: 99%

Effect of Coating Process on Properties of Two-Component Waterborne Polyurethane Coatings for Wood

Liu

2022

Coatings

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Acrylic acid has good environmental weather resistance, water resistance, alcohol resistance, dirt resistance, and other properties. An acrylic acid dispersion with a core–shell structure was prepared and reacted with a polyisocyanate-type curing agent to prepare a waterborne polyurethane topcoat suitable for wood. The prepared two-component polyurethane topcoat was used in combination with a waterborne primer and a waterborne sealing primer and applied to Pine (Pinus strobus) boards to carry out gloss, wear resistance, and adhesion experiments. The effects of different coating amounts and spraying times on the comprehensive properties of the wood coatings were studied. The experimental results showed that when the self-made two-component polyurethane topcoat for wood was matched with the primer and the sealing primer, the coating amount of the sealing primer had little effect on improving the adhesion and wear resistance but had a significant effect on the gloss. The spraying times of the primer and the topcoat greatly impacted the adhesion, but they had no decisive impact on the improvement of the gloss. When the coating amount was 60 g/m2 for the waterborne sealing primer, 100 g/m2 for waterborne primer, and 120 g/m2 for the self-made topcoat and the coating was sprayed twice, the comprehensive performance of the obtained film on the wood was the best. This research on the preparation and coating process optimization of the two-component waterborne polyurethane coatings for wood can provide a technical basis for the application of two-component waterborne polyurethane topcoats for wood.

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Emulsifyable air drying urethane alkyds

Cited by 16 publications

References 14 publications

Water‐based polyurethane dispersions

Water‐based polyurethane dispersions

Developments in aqueous polyurethane and polyurethane-acrylic dispersion technology. Part II. Polyurethane-acrylic dispersions and modification of polyurethane and polyurethane-acrylic dispersions

Effect of Coating Process on Properties of Two-Component Waterborne Polyurethane Coatings for Wood

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