Supplier of Alkyd Resin for Coatings & Paint from Dubai-UAE

Alkyd Resin

WHAT IS ALKYD RESIN?

Alkyd resin is one of the most widely used resins in the paint industry (solvent-based paints). The final properties of this resin depend on the type of raw materials used in the reaction.

HOW MANY CATEGORIES ARE ALKYD RESINS DIVIDED INTO?

As previously stated, an oil base is required to prepare alkyd resin. The amount or percentage of oil used, also known as oil length, determines the properties of the resin and its classification is made on this basis. These types of resins are classified into three groups of alkyds with long, medium and short oil lengths.

ALKYD RESIN WITH LONG OIL LENGTH

High gloss and gloss retention, good drying. Decorative enamel for interior & exterior applications. High viscosity resin for good pigment wetting. If the amount of oil used in the alkyd resin is high (55 to 60% by weight and 20 to 30% anhydrous phthalic), the resin will exhibit more oily properties. These properties include:

High solubility in aliphatic solvents such as white spirit
Better brushability (easy to apply with a brush and roller)
Lower hardness
Greater flexibility
Low viscosity
Slow drying speed
Relatively resistant to moisture and sunlight

This type of alkyd resin is mostly used in the production of construction oil paints.

APPLICATION

Good color and gloss retention, good drying, decorative enamel for interior and exterior applications. High viscosity resin for good pigment wetting.

SHORT OIL ALKYD RESIN

If the amount of oil used is low (between 25 and 44% by weight and more than 34% phthalic anhydride), alkyd resin exhibits polyester properties. These properties include:

Solubility in aromatic solvents such as toluene and xylene
Poor scratch resistance (applied by spray)
Higher hardness
Less flexibility
High viscosity
Fast drying speed
Low impact resistance
Higher durability

This type of alkyd resin is mostly used in the production of industrial paints (baking paints and primer paints).

MEDIUM OIL ALKYD RESIN

High gloss and gloss retention, good drying. Decorative enamel for interior & exterior applications. High viscosity resin for good pigment wetting. The amount of oil used in these resins is medium (between 45 and 55 percent by weight and 30 to 35 percent phthalic anhydride) and therefore they will have both oil and polyester properties. In such a way that by playing with the percentages, alkyds can be produced that have both industrial and construction applications.

Medium oil alkyds, due to their improved properties and having a higher percentage of polyester properties, have been more considered in terms of application than the long oil type in construction paint applications because the polyester properties cause them to show higher resistance to corrosion.

They are also used in the production of automotive oil paints due to their higher resistance to ultraviolet radiation.

APPLICATION

Architectural undercoats, general purpose white and dark shade enamels, primers for auto refinish.

TYPES OF OILS USED IN THE PRODUCTION OF ALKYD RESIN

Castor oil
Coconut oil
Soybean oil
Cottonseed oil
Tall oil
Bazrak oil
Tang oil

Using oils instead of fatty acids is more economical, and the resulting resin will have greater solubility in aliphatic solvents. Resins produced from fatty acids have a brighter color and higher chemical resistance due to the higher purity of the fatty acid, but at the same time the cost of resin production in these cases is higher and there are problems such as fatty acid corrosion and container rust.

TYPES OF POLYOLS IN ALKYD RESIN PRODUCTION

Glycerin
Pentaerythritol
Trimethylolpropane
Glycol
Sorbitol

WHAT ARE POLYOLS?

Alcohols with more than two hydroxyl (OH) groups are called polyols. Glycerin, pentaerythritol, and sorbitol are the most important polyols used to produce alkyd resins.

GLYCERIN

Glycerin is a highly viscous liquid, the industrial form of which is called glycerol. This alcohol is the main polyol in the manufacture of alkyd resins, which has a functionality of less than three due to the presence of one –OH group in the middle of the molecule despite the presence of three hydroxyl groups.

PENTAERYTHRITOL

It has four hydroxyl groups (-OH), meaning it is tetrafunctional, which is second only to glycerin in importance, and has three commercial forms: monopenta, dipenta, and tripenta. In fact, monopenta is used more than its other relatives.

It is interesting to know that in most cases, pentaerythritol is used together with glycerin and ethyl glycol to reduce the risk of gelling and increase the solubility of the resin.

The following are some of the positive features of pentaerythritol:

Increasing the viscosity of the resin
Shortening the drying time
Greater resistance to yellowing and heat
Higher brushability

SORBITOL

With six hydroxyl groups, it has a functionality of three, due to the loss of a water molecule and the formation of an ether bond. Like glycerin, it has a high viscosity and is dehydrated at the esterification temperature of the alkyd. It is used in small amounts with pentaerythritol.

TYPES OF ANHYDRIDES IN ALKYD PRODUCTION

Phthalic Anhydride
Maleic Anhydride
Benzoic Acid
Trimellitic Anhydride

WHAT ARE ANHYDRIDES?

Acid anhydride is an organic compound that has two bonds from the acyl group attached to the same oxygen atom. Phthalic anhydride, maleic anhydride are among the most important anhydrides in the production of alkyds. The more linear and simpler the monomer, the more flexible the resin will be.

ADVANTAGES OF USING ALKYD RESINS

Cheap price
Solubility in chemical solvents
Compatible with other resins
Easy resin preparation process

TYPES OF ALKYD RESINS BASED ON THE TYPE OF DRYING

Alkyd resins are divided into two drying groups: 1- in contact with free oxygen (with low hydroxyl) and 2- oven (with high hydroxyl).

DIFFERENCE BETWEEN POLYESTER RESIN AND ALKYD RESIN

Polyester resin is hard and brittle, but the presence of oil or fatty acid in the alkyd resin chain improves the flexibility and durability of the paint, its wetting properties and adhesion strength to the surface, and slows down the drying time.

ALKYL RESIN PACKING?

1. STEEL DRUMS

Size: Generally available in 200-250 kg drums.
Benefits: Durable and suitable for bulk transportation, especially for export purposes.

2. INTERMEDIATE BULK CONTAINERS (IBCS)

Size: Typically 1,000 liters.
Benefits: Ideal for large-scale industrial applications, providing efficient storage and transport solutions.

3. BAGS OR SACKS

Size: Typically used for powdered forms of alkyl resins in weights ranging from 25 kg to 50 kg.
Benefits: Easy handling and suitable for smaller quantities.

4. SMALL CANS OR PAILS

Size: Ranging from 5 liters to 25 liters.
Benefits: Convenient for smaller-scale or retail use.

The choice of packaging depends on the application, transportation requirements, and specific resin properties. Always ensure proper storage conditions, such as maintaining the appropriate temperature and preventing exposure to moisture.

TECHNICAL DATA SHEET OF LONG OIL ALKYD RESINS

Products	% NVM (Volatile/ solvent)	Acid value (mg KOH/ gm)	Color Gardner (@% Solids)	Viscosity B4 F/C @30°C (@% Solids)	Viscosity Gardner @25°C (as such)	Oil Type	%Oil (approx)	%PA (approx)	Description / Uses
S 10001	95.0 min	15.0 max	5.0 max (as such)	20.0-25.0 Sec (70.0%)	U – Y	Fatty acid	60.0	25.0	Decorative enamel for interior and exterior applications. High solid resin for good pigment wetting.
S 10951WS	95.0+/- 1.0 (WS)	10.0 max	4.0 max (50.0%)	180.0- 220.0 Sec (50.0%)	-	Veg. oil / Fatty acid	60.0	25.0	High solids for decorative enamel for interior and exterior applications.
S 10801WS	80.0+/- 1.0 (WS)	12.0 max	4.0 max (50.0%)	140.0-160.0 Sec (50.0%)	Z7 +/-	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying, decorative enamel for interior and exterior applications. High viscosity resin for good pigment wetting.
S 10701WS	70.0+/- 1.0 (WS)	10.0 max	4.0 max (50.0%)	130.0-150.0 Sec (50.0%)	Z6 +/-	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10701HVWS	70.0+/- 1.0 (WS)	10.0 max	4.0 max (50.0%)	100.0-130.0 Sec (45.0%)	Z7	Veg. oil / Fatty acid	60.0	25.0	High viscosity and rest of the properties as per S 10701WS.
S 10702WS	70.0+/- 1.0 (WS)	10.0 max	4.0 max (50.0%)	180.0- 220.0 Sec (50.0%)	Z7 – Z8	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10702HVWS	70.0+/- 1.0 (WS)	12.0 Max	4.0 max (50.0%)	Z1 - Z2 (50.0%)	Z9 +	Veg. oil / Fatty acid	60.0	25.0	High viscosity and rest of the properties same as S 10702WS.
S 10703JWS	70.0+/- 1.0 (WS)	10.0 max	4.0 max (50.0%)	200.0-220.0 Sec (50.0%)	Z9 +/-	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10703WS	70.0+/- 1.0 (WS)	10.0 max	4.0 max (50.0%)	230.0-250.0 Sec (50.0%)	Z9 +/-	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10704WS	70.0+/- 1.0 (WS)	12.0 max	4.0 max (50.0%)	250.0-280.0 Sec (50.0%)	Z9 +/-	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10708WS	70.0+/- 1.0 (WS)	10.0 Max	3.5 max (40%)	V - X (40%) 25⁰C	-	Veg. oil / Fatty acid	60.0	25.0	Very high viscosity. Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10702NY	60.0+/- 1.0 (WS)	13.0 max	5.0 max (as such)	P - S 25⁰C	Z3 – Z5	Veg. oil / Fatty acid	60.0	25.0	Non yellowing, good color and gloss retention, good drying. Decorative enamel for interior and exterior applications.
S 10551WS	55.0+/- 1.0 (WS)	12.0 max	4.0 max (50.0%)	75.0-95.0 Sec (50.0%)	T - W	Veg. oil / Fatty acid	60.0	25.0	Good color and gloss retention, good drying. Decorative enamel for interior and exterior applications. Primers for metal and wood interior & exterior finishes.
S 10552WS	55.0+/-1.0 (WS)	7.0 max	4.0 max (50.0%)	200.0 - 220.0 Sec (50 %)	Z1 - Z2	Veg. oil / Fatty acid	60.0	25.0	High viscosity and rest of the properties same as S 10551WS.

TECHNICAL DATA SHEET OF MEDIUM OIL ALKYD RESIN

Products	% NVM (Volatile/ solvent)	Acid value (mg KOH/ gm)	Color Gardner (@% Solids)	Viscosity B4 F/C @30°C (@% Solids)	Viscosity Gardner @25°C (as such)	Oil Type	%Oil (approx)	%PA (approx)	Description / Uses
S 20502WS	50.0+/- 1.0 (WS)	15.0 max	4.0 max (40.0%)	220.0- 240.0 Sec (40.0%)	Z4 – Z6	Veg. oil / Fatty acid	50.0	35.0	Architectural undercoats, general purpose white and dark shade enamels, primers for auto refinish.
S 20505WS	50.0+/-1.0 (WS)	12.0 Max	4.0 max (40.0%)	200.0- 240.0 Sec (40.0%)	X - Y (@ 40% Solid )	Veg. oil / Fatty acid	50.0	35.0	Fast drying for architectural undercoats, general purpose white and dark shade enamels.
S 20552WS	55.0+/- 1.0 (WS)	15.0 max	4.0 max (40.0%)	90.0-120.0 Sec (40.0%)	Z6 – Z8	Veg. oil / Fatty acid	50.0	35.0	Architectural undercoats, general purpose white and colored enamels, fast drying, auto refinish.
S 20601WS	60.0+/- 1.0 (WS)	10.0 max	4.0 max (40.0%)	90.0-130.0 Sec (40.0%)	Z – Z1	Veg. oil / Fatty acid	50.0	35.0	Architectural undercoats, general purpose white and dark shade enamels, fast drying auto refinish.
S 20601XL	60.0+/- 1.0 (Xylene)	10.0 max	4.0 max (50.0%)	90.0-160.0 Sec (50.0%)	Z3 – Z4	Veg. oil / Fatty acid	50.0	35.0	Architectural undercoats, general purpose white and dark shade enamels, fast drying auto refinish
S 20701XL	70.0+/- 1.0 (Xylene)	15.0 max	4.0 max (50.0%)	90.0-160.0 Sec (50.0%)	Z5 – Z6	Veg. oil / Fatty acid	50.0	35.0	Architectural undercoats, general purpose white and dark shade enamels