Phenalkamines
 

The most single valuable property of epoxy resins is their ability to undergo a quick transformation from the liquid state to hard thermoset solids at different temperatures. This conversion occurs with the formation of by-products and is accomplished by the addition of a chemical additive known as a curing agent. There are many types of curing agents which include amines and amine derivatives, acid anhydrides, catalytic curing agents and polyamides but the need for a longer pot life, better flexibility and an improved water resistance led to the search for a better curing agent and hence the discovery of phenalkamines. Phenalkamines were first developed by the Cardolite Corporation in the mid-70s and represent the first generation phenalkamines with high viscosity and dark color curing agents.

Phenalkamines are derived from cashew nut shell liquid (CNSL) and contain aliphatic polyaminic substituents which contribute to the desirable properties of this resin curing agent. Today, phenalkamines have a lower viscosity and a lighter color due to advances in the production process. Phenalkamines combine the properties of aliphatic amines and that of polyamides to have outstanding curing properties at low temperatures. They are commonly used in marine, industrial maintenance, civil engineering, adhesive, automobile and electrical potting applications.

DESIRABLE PROPERTIES OF PHENALKAMINES

Phenalkamines have a number of properties that make them suitable curing agents. These include a low temperature cure (as low as 35 oF), non critical mixing ratios, excellent water resistance, good flexibility, good compatibility with different types of epoxy resins, good adhesion to poorly prepared surfaces and a wide range of other interesting characteristics. At Royce International a line of curing agents developed from cashew nut shell liquid and known as phenalkamines has been manufactured for use in the construction and concrete, adhesives, composites and paint and coatings industries. The phenalkamines are manufactured in India and distributed out of Royce International facilities in Europe, Asia and the USA.

India is a leading produces of cashew nut shell oil and converts it into phenalkamines itself which allows the manufacturing costs to be greatly reduced. The phenalkamines are lighter in color and have a longer shelf life making this product great value for money. The inherent development of the phenalkamines within the company itself has enabled Royce International to supply the curing agent to its clients at a lower market price enabling clients to enjoy the same benefits that Royce International gains. Royce International has committed itself to providing the most efficient service and cost effective products to its clients today and tomorrow and has lived up to its mission since 1929.

It is a chemical manufacturer and supplier that has taken giant leaps in the industry to become one of the world's leading providers of best performing products at competitive prices. The company is proactive; it invests in the latest technology to continuously bring high quality innovative products and services for all the industries it supplies. These include the wood, pulp and paper, adhesives, automotive, pharmaceutical, rubber, composites, textiles, construction and concrete, electrical and electronics, paint and coatings, waste water treatment and many more markets. Products available include dyes, indigo powder, phenalkamines, epoxy resins, polymer additives and much more, all available at www.royceintl.com.