- Cashew Friction Dust
It is used in drum linings and disc pad brakes as a stabilizing agent. These friction dust particles engaging property of a piece of lining to have a resilient nature.
- PF
Phenol formaldehyde resins (PF) are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Phenolic resins have been mainly used in the production of circuit boards but have been largely replaced with epoxy resins and fiberglass cloth, as with fire-resistant FR-4 circuit board materials. Phenol formaldehyde resins are better known, however, for the production of molded products including billiard balls, laboratory countertops, and as coatings and adhesives. In the form of Bakelite, they are the earliest commercial synthetic resin.
- Modified Resin
Modified rosin is a very generic term for any rosin resin that is changed in some way other than esterification, hydrogenation, or dimerization. Generally these products are made for specialized purposes or markets other than adhesives. The most common modification of rosin is what is knows as a Diels-Adler reaction as shown in Figure 1. In this case, the reactants are specifically pimaric acid and maleic anhydride, although fumaric acid can also be used.
- CNSL
Cashew nut shell liquid (CNSL) is a by-product of the cashew industry. It is a naturally occurring substituted phenol which can take part in a variety of reactions. It is a cheap and renewable substance and can be employed for the manufacture of a multitude of useful products. It can replace phenol in many applications with equivalent or better results.