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An alkyd is polyester made by reacting a polyol with a dibasic acid. An oil-modified alkyd isan oil-modified polyester made from oil and polyol and a dibasic acid. OILs
The oils are triglyceride oils. Three fatty acid groups react with glycerine to form a triglyceride. There are 18 carbon atoms in the fatty acid molecule. The oils can be drying oils or non‑drying oils. Some drying oils are Tung, dehydrated castor oil, linseed, safflower, soybean oil and fish oil. Some non‑drying oils are palm, coconut and cottonseed oil.
Oils
Drying Non‑ drying
Tung Coconut
Dehydrated castor oil Palm
Linseed Cotton seed
Safflower
Sunflower
Soya
Fish
Polyols
The following polyols can be used to make alkyds Glycerine, pentaerythritol,trimethylol Propane and trimethylol ethane.
Dibasic acids
The most commonly used acid is phthalic anhydride. Isophthalic acid can also be used. Other dibasic acids are adipic acid, maleic anhydride and fumaric acid.
Mole Ratio of Phthalic to Glycerine
The mole ratio of phthalic to glycerine is (3) to (2.4)
This
Ratio is use when making 50% oil length alkyds. The same ratio is used
When making alkyds over 50% oil. For short oil alkyds you increase the mole ratio of glycerine to control viscosity and prevent gellation.
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What is Alkyd Primers?
Primer made with alkyd base.
What is the difference between alkyd latex and waterborne alkyd?
Traditionally, alkyds are found in solvent-based paints that must be reduced with paint thinner or mineral spirits. "Waterborne alkyd" is a generic term to refer to an alkyd resin that can be used in a water-thinnable paint. Because alkyds are not miscible with water, a chemical modification is sometimes used to produce a hybrid alkyd resin - often acrylic/alkyd or urethane/alkyd - that is compatible with water. These hybrids are often categorized generically under the term waterborne alkyds. A pure alkyd can be emulsified in water using appropriate surfactant combinations. This type of surfactant-stabilized alkyd emulsion has been sometimes referred to as an "alkyd latex." Different resin manufacturers use varying terminology to describe waterborne alkyds with the terms alkyd emulsion, alkyd dispersion, and alkyd latex being among the most common.
Can you mix alkyd enamel with industrial alkyd for metals?
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What is styrenated alkyd resin?
It is a fast drying alkyd which is made by reacting the fatty acid, conjugated double bonds, in a Diels-Alder type reaction, with liquid styrene monomer. It sets up very quickly to become handleable, then dries a normal alkyd. They have good adhesion to aluminum and acrylic plastics. They are used to make hammered finishes , because they are usually in Xylene. There is a sister resins made by adding vinyl toluene, which are in an aliphatic solvent. They both have a specific re-coating window of under 4 hrs .
what paint to use for painting vinyl siding,alkyd or latex?
The paint that seems to work best with vinyl siding are ones that have a blend of urethane and acrylic resins. The most important thing to do when painting siding make sure your surface is clean and dry.
What has the author Krister Holmberg written?
Krister Holmberg has written: 'High solids alkyd resins' -- subject(s): Alkyd resins, High solids coatings
Name of a colourless crystalline compound used in making resins?
One example of a colorless crystalline compound used in making resins is maleic anhydride. It is a cyclic compound that is widely used in the production of resins such as unsaturated polyester resins and alkyd resins due to its ability to undergo polymerization reactions.
What does RDCO stand for in Alkyd Resin?
RDCO stands for "Resin Ductility Control Oil" in Alkyd Resin. It refers to the oil component in alkyd resins that helps control the ductility or flexibility of the final product. This oil component plays a crucial role in determining the overall performance and characteristics of the alkyd resin, such as its drying time, hardness, and adhesion properties.
What is alkyd enamel?
Alkyd enamel is a type of paint made from modified alkyd resins, which are synthetic polymers derived from natural oils. It is known for its durability, excellent adhesion, and resistance to fading and moisture, making it ideal for both interior and exterior applications. Often used for coating surfaces such as wood, metal, and concrete, alkyd enamel provides a smooth, glossy finish that enhances aesthetic appeal. Additionally, it typically requires solvents for thinning and cleanup, as it is not water-based.
What are the plastics hydrocarbon and alkyd used for?
Plastics are a type of polymer material used for a wide range of applications, such as packaging, consumer goods, construction, and automotive parts. Hydrocarbons are organic compounds consisting of only hydrogen and carbon atoms, which are used as feedstock for producing plastics through processes like polymerization. Alkyd resins are synthetic resins made from the reaction of polyhydric alcohols and polybasic acids, often used as binders in paints and coatings.
What is the difference between acrylic alkyd and modified alkyd?
Alkyds can be modified (blended with ) acrylic resins/emulsions or other polymers such as phenolic resins or urethanes, so all acrylic alkyds are modified alkyds, but not all modified alkyds are acrylic alkyds. Both are pretty general terms, but modified alkyd is much more vague and proprietary. The term "Acrylic Alkyd" is usually reserved for alkyds which have been chemically modified with acrylic monomers such as methyl methacrylate, methacrylic acid, styrene, vinyl toluene, etc. These acrylic monomers are incorporated into the alkyd molecule by addition polymerization. Such alkyds are generally characterized by faster solvent release, quicker tack-free time, better hardness, blocking resistance, color and color retention, and durability, depending on the choice of monomers and amount of acrylic content. These alkyds are also more expensive than conventional alkyds due to higher cost of monomers and the additional manufacturing steps required.
What is the difference in alkyd and enamel?
Alkyd and enamel paints are both used for similar applications, but they differ in composition and characteristics. Alkyd paints are oil-based and contain synthetic resins, which give them durability and a smooth finish, making them ideal for surfaces like wood and metal. Enamel paints, on the other hand, refer to a type of paint that dries to a hard, glossy finish and can be either oil-based or water-based. While enamel can include alkyd formulations, it generally emphasizes the finish quality rather than the specific resin type.
What is Alkyd Primers?
Primer made with alkyd base.
Can all resin be cured with UV light?
Not all resin can be cured with UV light. Some resins require different curing methods, such as heat or chemical catalysts. UV-curable resins are specifically formulated to cure when exposed to ultraviolet light.
What is Specific heat capacity of alkyd resin?
The specific heat capacity of alkyd resin typically ranges from about 1.5 to 2.5 J/g·°C, depending on its formulation and composition. This property indicates the amount of heat energy required to raise the temperature of a unit mass of the resin by one degree Celsius. Specific heat capacity is essential for understanding the thermal behavior of alkyd resins in applications such as coatings and adhesives. For precise values, it is best to refer to technical data sheets provided by manufacturers.
What is the difference between alkyd latex and waterborne alkyd?
Traditionally, alkyds are found in solvent-based paints that must be reduced with paint thinner or mineral spirits. "Waterborne alkyd" is a generic term to refer to an alkyd resin that can be used in a water-thinnable paint. Because alkyds are not miscible with water, a chemical modification is sometimes used to produce a hybrid alkyd resin - often acrylic/alkyd or urethane/alkyd - that is compatible with water. These hybrids are often categorized generically under the term waterborne alkyds. A pure alkyd can be emulsified in water using appropriate surfactant combinations. This type of surfactant-stabilized alkyd emulsion has been sometimes referred to as an "alkyd latex." Different resin manufacturers use varying terminology to describe waterborne alkyds with the terms alkyd emulsion, alkyd dispersion, and alkyd latex being among the most common.
Can you mix alkyd enamel with industrial alkyd for metals?
paint jobs
