The ensuing materials has ether linkages and displays higher chemical and oxidation resistance than normally attained by curing with amines or anhydrides. Considering that quite a few novolacs are solids, this class of hardeners is commonly used for powder coatings. Thiols[edit]tst ivm.clk mmh2 clkh2 achf nopl spfp4 uam1 lsph nmim1 slnm2 crtt spfp