A long oil alkyd was formulated with three soybean oilbased reactive diluents. Herein, the development of a high solids modified alkyd, motivated by environmental concerns, will be examined. However, resins obtained in this way possess unsatisfactory properties. New high solid formulations 5070 % solids successfully meet regulations with regard to volatile organic compounds voc regulations customer specifications. Calcium keeps the film matrix open which allows more oxygen into the film and more. Suitable for acid catalyzed, nitrocellulose, twocomponent and stoving systems. Alkyd resins are polyesters modified with unsaturated fatty acids.
The cured films were analyzed for properties such as viscoeleasticity, tensile properties, adhesion, and general coatings properties. Hyperbranched phenolicalkyd resins with high solid. It is easy to apply by spray and has good resistance to general atmospheric weathering. The key concepts that can be used to improve properties of high solids alkyds are discussed in a clear and illustrative way, for example. The chief purpose of the book is to collect into a single volume practrical data on materials, equipment and operation which are basic to. This book is a study of the processing variables and fundamental chemical reactions that comprise the basic techniques of making alkyd resins. Also covered are the related uralkyd and epoxy ester resins. The article presents new possible approaches for alkyd resin architecture in order to comply with market new constraints related to the voc emissions. Highsolids alkyds resins with improved properties based. Meeting low voc legislation, reducing your carbon footprint of alkyd paints or developing advanced, durable waterborne alkyds requires dedicated expertise and support. The saamodified alkyds were formulated into highsolids alkyd coatings with improved dry times, humidity resistance, and weatherability compared to a commercial highsolids alkyd.
High quality resins for conventional, high solids and. High solids coating compositions, the vehicle comprising an alkyd resin, a reactive liquid and a crosslinking agent. Solventborne and highsolids coatings basf intermediates. This book covers the chemistry of high solids compositions and focuses on the binder component and on the solvent. This invention relates to fatty acid modified alkyd resins and the use thereof in formulation of high solids interior and exterior paints capable of curing at ambient temperatures without the use of appreciable amounts of solvent. Show full item record recommend this item display statistics. General coatings properties included crosshatch adhesion, pencil hardness, impact resistance, and solvent resistance. A watersoluble or waterdispersible polyester b useful as emulsifier for aqueous emulsions of alkyd resins a, wherein the polyester b is obtainable by reacting, under polycondensation conditions, polyhydroxyl components ba from the class of the sugar alcohols having more than 4 carbon atoms and at least five hydroxyl groups per molecule, alkoxypolyethylene glycols bb having 1 to 4 carbon. Reactive liquids used in the instant composition must have at least one hydroxyl group. Average annual growth in the consumption of polyester coating resins and polyester coatings will be 5% during 201621. Replacing a portion of the pentaerythritol with saa resinous polyols in a longoil alkyd cook yields resins with much lower polydispersities and viscosities. There are continual developments to improve alkydbased formulations, especially towards highsolids and waterborne formulations.
Discover innovative technology 3 the chemistry of silicone resins 4 selecting a resin binder system 56 choosing a silicone resin 79 dowsil resins. In alkyd paint, the binder is a synthetic resin, which is. Highsolids topcoats offer high uv, gloss and color stability posted 4108 npca says coatings industry gets high marks in epa sector strategies report development of lowcolor alkyd resins with high content of biobased succinic acid. Box 582 research triangle park, nc usa 27709 1035 swabia court, durham, nc usa 27703. Arkema coating resins resins for industrial coatings you can expect more choices from arkema coating resins. The term highsolids here refers to aqueous alkyd resin emulsions having a mass fraction of solids of 55% or more. An alkyd typically consists of unsaturated fatty acids, polyols and phthalic anhydride as depicted in figure 1 1, 2. Resin and polymer product selection guide scott bader. High solids alkyd resins books in soils and the environment k. High solids alkyd coating compositions ppg industries, inc.
Airdriable alkyd resins are prepared by reacting substantially equimolar a. Highperformance acrylic polymers and resins for a wide range of coating applications. Alkyd resin setal long oil alkyd 10 long oil alkyd, urethane modified 10 medium oil alkyd 10. Setal a f 300 sn 65 solvent naphtha mixed fatty acids. This paper discusses the issue of colour acceptance in decorative high solids alkyd paints and investigates different routes for dealing with the problem. Linseed oil alkyds were modified with a triethoxysilane functionalized isocyanate. The book describes different approaches to preparing high solid alkyds. Alkyd resins of long oil length can be obtained with high solid content.
Alkydpolyester surface coatings chemical economics. Epoxy esters conventional 8 high solids 25 epoxy esters high solids 8 polyester dispersions 26 chain stopped conventional 9 water reducible 26 chain stopped high solids 9 flat alkyds conventional 10 powder page long oil conventional 11 resins 28 long oil high solids 11 curatives 29. Us4997480a alkyd resins and the use thereof for high. Despite the book being published in 1987, the concepts are still valid. Numerous copolymers produced from such hydroxyfunctional monomers and other acrylic or methacrylic esters, along with other comonomers, were developed in the 1960s and evolved into the most important class of resins, namely solution polymerization products. Solventborne formulations are comprehensively used in automotive coatings, industrial coatings, and printing inks. Scott bader has a strong reputation for producing high quality resins used in the manufacture of paints and coatings. Key challenges for alkyd resins producers are to costeffectively meet the growing demand from consumers for improved performance, sustainability and safety. It discusses factors controlling the viscosity and the solid content of alkyd resins. Request pdf highly branched high solids alkyd resins the problem of decreasing of organic solvent contents in high gloss decorative paints may be solved in. Types, properties and application of acrylic resins 67 propylene oxide 18. Hisolids alkyd metal primer is a fast drying, high solids, low voc, rust inhibitive, alkyd primer for steel surfaces. Air driable alkyd resins and process for their preparation download pdf. Highly branched high solids alkyd resins sciencedirect.
Alkyd resins based on soyabean oil and other vegetable oils 103. This dissertation focused on the development of highsolid alkyd coating systems with reduced voc. Not all new compounds based on manganese have been tried but manganese is less effective than cobalt, needs to be used at. A conjugated fatty acid, used in high solids alkyd resins muizebelt et al. Colour acceptance in high solids alkyds european coatings. We have our own production capacities for manufacturing al kyd resins in the heart of europe. Highly branched polymers help to achieve resins with viscosity much lower than its linear. Polyesters are offered in highsolids, waterborne, and powder coatings. But, alkyd resins obtained in this way have insufficient properties. With the growing popularity of latex, or waterborne, paints the market for alkyd resins made from soybean oil has declined. Surprisingly it has now been found that highsolids aqueous emulsions of alkyd resins are obtained if the emulsions are prepared using selected polyesters as emulsifier resins and under certain process conditions. Ang dtc, gan sn 2012 novel approach to convert nonself drying palm stearin alkyds into environmental friendly uv curable resins. Us6469096b1 emulsifiers for highsolids alkyd resin. Alkyd resins 24 acid curing alkyd resins 26 uv radiation curing.
Can be used as primer or mid coat in atmospheric environments. Use combination of long oil alkyds with chain stopped alkyds at 6065% solids. This includes developing eco impact waterborne alkyds with high performance properties. Suitable for properly prepared carbon steel, aluminum and wooden substrates. Goodexcellent resistance to corrosion and weathering outstanding color and gloss retention. More specifically, the invention relates to high solids alkyd coatings derived from fatty acid oil modified alkyd resins having low viscosities capable of forming. Driers for high solids paints when compared to classical alkyd resins, binders in airdrying high solids paints have a lower molecular mass and show higher reactivity to autoxidation polymerization. The results are low voc and low co2 alkyd paints that give outstanding protection. Furthermore, an advantage of using alkydbased resins is that they are made of fatty acid building. In spite of challenges from many new coating resins developed over. Silicon modified alkyd resins to p r o m o t e rapid curing of. Overview in the united states vinyl toluene has been used to modify alkyd resins for many years.
Europe middl e east a frica resins for industrial coatings. Solventborne formulations have historically demonstrated high performance in diverse coating applications. Differentiate your offer further and significantly reduce your carbon footprint by using renewable raw materials such as voxtar renewable penta with tofa tall oil fatty acid. Alkyd resins are any of a large group of thermoset resins that are essentially polyesters made by heating polyhydric alcohol with polybasic acids or their anhydride and used chiefly in making protective coatings good weathering with properties. Ebscohost serves thousands of libraries with premium essays, articles and other content including isophthalic acid based alkyd resins. Highly branched high solids alkyd resins request pdf. One of them is the production of high solids alkyd paints. A short alkyd is characterized by having fast setting and fair air drying but good baking, adhesion, color retention, and gloss. Us4335027a airdriable alkyd resins and process for their. It is designed for high performance protection with outstanding exterior gloss and color retention. Secure the cover tightly and invert the jar momentarily to check for leaks. Estagio realizado na cin corporacao industrial do norte, s. Their coatings dry very slowly and other properties do not qualify them for application.
Applications farm, road, and construction equipment finishes. The easiest way of obtaining high solids alkyd resins is by decreasing the molecular weight of oligomers. Various routes to achieve high solids there are several different technologies that can be employed to increase the solids content of alkyd resins. Protective hisolids alkyd metal primer marine coatings. Synthesis and properties of a high solids triethoxysilane. Alkyd and polyester resins additive resins short oil alkyd setal 84 xx70 69 xylene synthetic fatty acids 5. The simplest way of synthesising high solids alkyd resins is decreasing of their molecular weight by increasing of fatty acids contents or increasing the ratio of ohcooh groups. Global consumption of alkyd coating resins and alkyd coatings is forecast to grow at an average annual rate of about 3% during 201621. An aqueous alkyd resin emulsion having a mass fraction of an alkyd resin a in the solids of the emulsion of from 70 to 95% and a mass fraction of a polyester b or from 5 to 30%, the mass fractions adding up to 100%, wherein the polyester b is obtained by reacting, under polycondensation conditions, polyhydroxyl components ba from the class of the sugar alcohols having. With excellent compatibility with many organic resins, silicone resins can provide a wide range of film and performance properties for many highvalue applications. Request pdf highly branched high solids alkyd resins the problem of decreasing of organic solvent contents in high gloss decorative paints may be solved in many ways. Alkyd resins a short alkyd 3 5 4 5 % oil content and 3 5 % phthalic anhydride prepared from soya oil by a solvent cook procedure is given below prepara tion 23. Coatings properties were evaluated as a function of concentration of reactive diluent in the formulation.
Long oil alkyd resin for the production of high solid paints and corrosion resistant lacquers, good drying properties, high hardness. Effective in drying difficult to cure high solids coatings. Crosslink mechanisms of highsolids alkyd resin in the. Unlike most fast dry systems, the addition of vinyl toluene provides compatibility with both aliphatic and aromatic solvents giving the paint formulator a great deal of flexibility in formulating paints. The reactive liquid and the alkyd resin are crosslinked with the crosslinking agent. Used mainly for the curing of unsaturated polyester resins.
Chemistry, processing, and uses of various types of alkyds are discussed including oxidizing and nonoxidizing alkyds, high solids, styrenated alkyds, siliconized alkyds, and waterborne alkyd resins. Patented technology allows for higher solids while maintaining low viscosity. The book describes different approaches to preparing high solid. Select driers for high solids and waterborne coatings.
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