Alkyd resins of long oil length can be obtained with high solid content. Calcium keeps the film matrix open which allows more oxygen into the film and more. Hyperbranched phenolicalkyd resins with high solid. We have our own production capacities for manufacturing al kyd resins in the heart of europe. 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. Discover innovative technology 3 the chemistry of silicone resins 4 selecting a resin binder system 56 choosing a silicone resin 79 dowsil resins. An alkyd typically consists of unsaturated fatty acids, polyols and phthalic anhydride as depicted in figure 1 1, 2. A long oil alkyd was formulated with three soybean oilbased reactive diluents. 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. Box 582 research triangle park, nc usa 27709 1035 swabia court, durham, nc usa 27703. Ang dtc, gan sn 2012 novel approach to convert nonself drying palm stearin alkyds into environmental friendly uv curable resins.
Key challenges for alkyd resins producers are to costeffectively meet the growing demand from consumers for improved performance, sustainability and safety. General coatings properties included crosshatch adhesion, pencil hardness, impact resistance, and solvent resistance. High solids coating compositions, the vehicle comprising an alkyd resin, a reactive liquid and a crosslinking agent. More specifically, the invention relates to high solids alkyd coatings derived from fatty acid oil modified alkyd resins having low viscosities capable of forming. Arkema coating resins resins for industrial coatings you can expect more choices from arkema coating resins. Us4335027a airdriable alkyd resins and process for their. The chief purpose of the book is to collect into a single volume practrical data on materials, equipment and operation which are basic to.
Long oil alkyd resin for the production of high solid paints and corrosion resistant lacquers, good drying properties, high hardness. Solventborne and highsolids coatings basf intermediates. In alkyd paint, the binder is a synthetic resin, which is. Solventborne formulations are comprehensively used in automotive coatings, industrial coatings, and printing inks. This paper discusses the issue of colour acceptance in decorative high solids alkyd paints and investigates different routes for dealing with the problem.
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. The book describes different approaches to preparing high solid alkyds. Highperformance acrylic polymers and resins for a wide range of coating applications. Alkyd resins are polyesters modified with unsaturated fatty acids. Highly branched polymers help to achieve resins with viscosity much lower than its linear. High quality resins for conventional, high solids and. Alkyd and polyester resins additive resins short oil alkyd setal 84 xx70 69 xylene synthetic fatty acids 5. But, alkyd resins obtained in this way have insufficient properties.
Polyesters are offered in highsolids, waterborne, and powder coatings. 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. Herein, the development of a high solids modified alkyd, motivated by environmental concerns, will be examined. Also covered are the related uralkyd and epoxy ester resins. 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. There are continual developments to improve alkydbased formulations, especially towards highsolids and waterborne formulations. Scott bader has a strong reputation for producing high quality resins used in the manufacture of paints and coatings. Select driers for high solids and waterborne coatings. High solids alkyd coating compositions ppg industries, inc. Despite the book being published in 1987, the concepts are still valid. Europe middl e east a frica resins for industrial coatings.
The results are low voc and low co2 alkyd paints that give outstanding protection. Alkyd resin setal long oil alkyd 10 long oil alkyd, urethane modified 10 medium oil alkyd 10. 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. Linseed oil alkyds were modified with a triethoxysilane functionalized isocyanate. Goodexcellent resistance to corrosion and weathering outstanding color and gloss retention. Airdriable alkyd resins are prepared by reacting substantially equimolar a. 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. It discusses factors controlling the viscosity and the solid content of alkyd resins.
A short alkyd is characterized by having fast setting and fair air drying but good baking, adhesion, color retention, and gloss. Us4997480a alkyd resins and the use thereof for high. Use combination of long oil alkyds with chain stopped alkyds at 6065% solids. However, resins obtained in this way possess unsatisfactory properties. Ebscohost serves thousands of libraries with premium essays, articles and other content including isophthalic acid based alkyd resins. Alkydpolyester surface coatings chemical economics. Colour acceptance in high solids alkyds european coatings. Their coatings dry very slowly and other properties do not qualify them for application.
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. Not all new compounds based on manganese have been tried but manganese is less effective than cobalt, needs to be used at. Solventborne formulations have historically demonstrated high performance in diverse coating applications. The term highsolids here refers to aqueous alkyd resin emulsions having a mass fraction of solids of 55% or more. Meeting low voc legislation, reducing your carbon footprint of alkyd paints or developing advanced, durable waterborne alkyds requires dedicated expertise and support. Alkyd resins based on soyabean oil and other vegetable oils 103. One of them is the production of high solids alkyd paints. High solids alkyd resins books in soils and the environment k. Highly branched high solids alkyd resins sciencedirect. Suitable for properly prepared carbon steel, aluminum and wooden substrates. Estagio realizado na cin corporacao industrial do norte, s. This dissertation focused on the development of highsolid alkyd coating systems with reduced voc.
Resin and polymer product selection guide scott bader. This includes developing eco impact waterborne alkyds with high performance properties. Effective in drying difficult to cure high solids coatings. Show full item record recommend this item display statistics. Average annual growth in the consumption of polyester coating resins and polyester coatings will be 5% during 201621. The cured films were analyzed for properties such as viscoeleasticity, tensile properties, adhesion, and general coatings properties. Various routes to achieve high solids there are several different technologies that can be employed to increase the solids content of alkyd resins. Reactive liquids used in the instant composition must have at least one hydroxyl group. The key concepts that can be used to improve properties of high solids alkyds are discussed in a clear and illustrative way, for example. With excellent compatibility with many organic resins, silicone resins can provide a wide range of film and performance properties for many highvalue applications.
Global consumption of alkyd coating resins and alkyd coatings is forecast to grow at an average annual rate of about 3% during 201621. Crosslink mechanisms of highsolids alkyd resin in the. The easiest way of obtaining high solids alkyd resins is by decreasing the molecular weight of oligomers. Highly branched high solids alkyd resins request pdf. Used mainly for the curing of unsaturated polyester resins. 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. 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. Furthermore, an advantage of using alkydbased resins is that they are made of fatty acid building. Alkyd resins 24 acid curing alkyd resins 26 uv radiation curing. Protective hisolids alkyd metal primer marine coatings. 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.
Hisolids alkyd metal primer is a fast drying, high solids, low voc, rust inhibitive, alkyd primer for steel surfaces. Coatings properties were evaluated as a function of concentration of reactive diluent in the formulation. 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. This book covers the chemistry of high solids compositions and focuses on the binder component and on the solvent. 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. As a result of the high solids content, the thickness of the applied dry film is much higher and as a consequence, the through drying properties. Replacing a portion of the pentaerythritol with saa resinous polyols in a longoil alkyd cook yields resins with much lower polydispersities and viscosities. Synthesis and properties of a high solids triethoxysilane.
Highsolids alkyds resins with improved properties based. The tensile, thermomechanical, and general coating properties were evaluated. A conjugated fatty acid, used in high solids alkyd resins muizebelt et al. 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. Secure the cover tightly and invert the jar momentarily to check for leaks.
Can be used as primer or mid coat in atmospheric environments. 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. It is designed for high performance protection with outstanding exterior gloss and color retention. With the growing popularity of latex, or waterborne, paints the market for alkyd resins made from soybean oil has declined. Types, properties and application of acrylic resins 67 propylene oxide 18. The article presents new possible approaches for alkyd resin architecture in order to comply with market new constraints related to the voc emissions. Silicon modified alkyd resins to p r o m o t e rapid curing of. This book is a study of the processing variables and fundamental chemical reactions that comprise the basic techniques of making alkyd resins.
Us6469096b1 emulsifiers for highsolids alkyd resin. The book describes different approaches to preparing high solid. Setal a f 300 sn 65 solvent naphtha mixed fatty acids. The reactive liquid and the alkyd resin are crosslinked with the crosslinking agent. 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. Applications farm, road, and construction equipment finishes. Patented technology allows for higher solids while maintaining low viscosity. Suitable for acid catalyzed, nitrocellulose, twocomponent and stoving systems. It is easy to apply by spray and has good resistance to general atmospheric weathering. The saamodified alkyds were formulated into highsolids alkyd coatings with improved dry times, humidity resistance, and weatherability compared to a commercial highsolids alkyd. Air driable alkyd resins and process for their preparation download pdf. Overview in the united states vinyl toluene has been used to modify alkyd resins for many years.