Phenalkamines
A typical cardanol. Phenalkamines are produced from this by introducing amino groups .
As phenalkamines ( phen ol alk on amine ) refers to certain semi-synthetic hardener for epoxy resins which cure rapidly even at low temperatures (below 5 ° C). They are not very sensitive to moisture during curing (even under water) and offer good chemical resistance and elasticity. That is why they are particularly suitable for the production of marine and offshore paints, solvent-free floor coatings for industry, for coatings on agricultural equipment and for tank and pipe linings.
Phenalkamines are from the in cashew shell oil existing cardanoles made. Aminoalkyl groups are introduced onto the ring via a Mannich reaction with aldehydes (especially formaldehyde ) and polyamines .
Individual evidence
- ↑ cardolite.com: Phenalkamine Curing Agents , accessed July 9, 2018.
- ↑ Patent US6262148 : Phenalkamine curing agents and epoxy resin compositions containing the same. Published on July 17, 2001 , Inventors: FRANK CHENG CHI-WEN, DAVID BENDER, TIE WANG HSING.