gas more quickly the degassed zeolite with carbon dioxide was mixed with a quantity of the paint three different 2 u00d7 10 inch papers were prepared and painted as follows sample s1 contained only paint without zeolite sample s2 contained 25 by weight of degassed as above zeolite without co 2 and sample s3 was prepared with 25 by weight of co 2 adsorbed zeolite as above lastly sample s4 was prepared the same way as sample s3 except the samples were left on a shelf under ambient conditions at room temperature for three weeks each sample was tested with a flame propagation tester the papers painted with only paint s1 and with 25 by weight zeolite 5a without co 2 s2 burned within several seconds however carbon dioxide adsorbed zeolite 5a added samples s3 showed drastic retardation of the flame and the fire was extinguished under the sample experimental condition it is clear that carbon dioxide released from the zeolite at elevated temperatures in the presence of flame retards and extinguishes the fire to investigate the long term stability of co 2 adsorbed zeolite containing paint the s4 samples were kept at room temperature under ambient conditions for 3 weeks as described above s4 samples produced the same results as s3 samples i e all of the s4 samples extinguished the fire upon burning in this example the latex contained in the paint operated as a sealant for the porous particles also the co 2 was not impregnated in the to porosities at very high pressure nor.