required to obtain a fully hardened coating the increase in viscosity over time was also measured for the composition of the catalyzed bath to judge the efficiency of the u03b1 acetylenic ketones as inhibitor the results are reported in the table i which follows the procedure of example 1 was repeated except that a different inhibitor was selected the results are reported in table i below table i______________________________________ concentration of the hardening inhibitor in the resin time at gelation timenature of by 110 u00b0 c at 20 u00b0 c in hthe inhibitor weight mole kg sec and min______________________________________none none none 10 30 min1 octyn 3 one 0 25 2 1 u00d7 10 sup 2 10 12 7 h1 octyn 3 one 0 50 4 1 u00d7 10 sup 2 10 12 14 h1 octyn 3 one 0 63 5 0 u00d7 10 sup 2 12 25 h8 chloro 1 0 22 1 4 u00d7 10 sup 2 15 4 hoctyn 3 one8 chloro 1 0 50 3 0 u00d7 10 sup 2 15 10 hoctyn 3 one8 chloro 1 0 68 4 1 u00d7 10 sup 2 15 19 hoctyn 3 one8 chloro 1 0 73 4 6 u00d7 10 sup 2 18 24 hoctyn 3 one2 hydroxy 3 0 50 4 5 u00d7 10 sup 2 15 60 hhexyn 4 one1 trimethyl 0.