Epoxy Resin

Epoxy resin is a highly versatile product used in various industries. It adheres to different materials including metal, glass, wood, and fabric.

Some epoxy resins are heat-resistant and makes it a great adhesive product for anyone to build useful items like grouts, tumblers, bookmarks, shakers, etc. It finds wide application in coatings and construction industry due to its dynamic properties.

What is epoxy resin?

Epoxy resin (polyepoxides) is a polymer containing epoxide groups. It’s made up of carbon chains that are linked to other elements like nitrogen, oxygen, and hydrogen. The link happens through a covalent bond.

Epoxy resins may be reacted either with themselves through catalytic homopolymerisation, or with a wide range of co-reactants including polyfunctional amines, acids (and acid anhydrides), phenols, alcohols and thiols. These co-reactants are often referred to as hardeners or curing agents, and the cross-linking reaction is commonly referred to as curing.

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 Chemistry of Epoxy Resin:

Most of the commercially used epoxy monomers are produced by the reaction of a compound with acidic hydroxy groups and epichlorohydrin. First a hydroxy group reacts in a coupling reaction with epichlorohydrin, followed by dehydrohalogenation. Epoxy resins produced from such epoxy monomers are called glycidyl-based epoxy resins. The hydroxy group may be derived from aliphatic diols, polyols (polyether polyols), phenolic compounds or dicarboxylic acids.

Phenols can be compounds such as bisphenol A, bisphenol Fand novolac. Polyols can be compounds such as 1, 4-butanediol. Di- and polyols lead to glycidyl ethers. Dicarboxylic acids such as hexahydrophthalic acid are used for diglycide ester resins. Instead of a hydroxy group, also the nitrogen atom of an amine or amide can be reacted with epichlorohydrin.

The most common epoxy resins are based on reacting epichlorohydrin (ECH) with bisphenol A,  resulting in a different chemical substance known as bisphenol A diglycidyl ether (commonly known as BADGE or DGEBA). Bisphenol A-based resins are the most widely commercialized resins but also other bisphenols are analogously reacted with epichlorohydrin.

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Construction Chemicals

Construction chemicals are mainly chemical formulations used with masonry materials, cement, concrete or other construction materials at the time of construction to hold the construction materials together.

New and highly classy building structures are responsible for ever-increasing demands for high quality construction materials. Many of these demands can be fulfilled with the help of construction chemicals that are currently an integral component of the construction industry.

Type of Construction Chemicals

Concrete and other supplies including sand, blocks, bricks, wood, stones, etc. are being used widely right from the foundation below the ground till the rooftop. However, when man came to know about modern chemistry, he came up with a variety of chemicals called construction chemicals, which are currently the base of the current construction industry. These chemicals are essential elements for building complex constructions and have truly altered the paradigm of construction industry. These chemicals have found applications in numerous construction projects for improving the quality of construction materials and increasing the sustainability of the project

1. Concrete Admixtures:

Concrete admixtures are are soluble in water and are mixed in minute quantities to concrete mixtures for altering certain properties. They help in minimizing the construction projects’ costs and alters the characteristics of hardened concrete. It is cheaper compared to other chemicals such as epoxy.

2. Flooring Compounds:

Today, there are different types of flooring materials available. As flooring adds warmth and charm, it is considered as a vital component of a structure. Numerous flooring materials are available today that are made using flooring adhesives. Flooring chemicals can consist of wide range of complex chemicals which improves the aesthetic look as well as durable strength.  

3. Waterproofing Chemicals:

Waterproofing chemicals are mainly used to prevent water leakage in the commercial as well as residential buildings. They are applied on construction components in order to prevent water from leaking and preventing destruction of the element. They are specially applied to those structures that are frequently in contact of water.

4. Sealants:

Sealants are basically a barrier to external factors like dust particles, liquids, moisture, oxygen, etc. They are known to seal an opening or a surface in order to avoid leakage of any gas or liquid. Usually, they are used to fill small gaps that are tough to cover, with materials such as drywall, concrete, etc.

5. Chemicals to Repair and Rehabilitate Structures:

Everything that is being developed needs repair and maintenance after certain duration of time or due to some external damages. There are different types of chemicals available for revamping and maintaining the constructions. Some of the chemicals that play a vital role in repair and rehabilitation of structures are bonding agents, primers, Admixtures, corrosion inhibitors, anti-corrosive coatings, and grouts.

6. Epoxy Resins

When it comes to construction chemicals Epoxy resins are the top dog in the race. Epoxy resins are rigid, flexible, durable etc based on the formulation. Hence, it becomes the top choice of the projects. 

Based on the requirements, epoxy can be modified either to enhance its performance or give aesthetic look. 

List of Construction Chemicals 

Epoxy Resins - 

Liquid epoxy resins, Solid epoxy resins, Bis-A resin, Bis-F resin, A-F Resin 

Curing Agents -

Cycloaliphatic Amine, Aliphatic Amine, Aromatic Amine , Polyamides

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