Novolac-Cyanate Laminating Resins
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Low molecular weight novolac resins in which the phenolic groups have been replaced by cyanate groups are useful as laminating resins for printed circuit boards. The preparation of novolac resins is well known and can be easily controlled so as not to give insoluble products. The subsequent cyanation is carried out at low temperatures and to any degree desired, allowing the final thermally cured resin to have a variety of triazine densities in order to control the mechanical properties, as desired. The structure of these compounds is illustrated below.