Flame resistant article made of phenolic triazine and related method using a pure cyanato novolac

A method of manufacturing articles made of a composition comprising a phenolic triazine resin having a LOI equal to or greater than about 40 comprising the steps of fabricating a composition comprising a cyanato group containing phenolic resin of the formula:

• ##STR10## into the shape of said article forming a shaped composition;
• and completely curing said cyanato group phenolic resin in said shaped composition to form said article;
• wherein:
• n is a positive whole number greater or equal to 1;
• q and r are the same or different at each occurrence and are whole numbers from 0 to 3, with the proviso that the sum of q and r at each occurrence is equal to 3;
• Z is --CN, or hydrogen and --CN;
• o and p are the same or different at each occurrence and are whole numbers from 0 to 4 with the proviso that the sum of o and p at each occurrence is equal to 4;
• --X-- is a divalent organic radical, and
• R.sub.3 is the same or different at each occurrence and is a substituent other than hydrogen which is unreactive under conditions necessary to completely cure the cyanato group containing phenolic resin.