Patent ID: 6379800
Filing Date: 2002-04-30
Classification: C08G,C08L,H05K,Y10T

Abstract:
A glyoxal-phenolic condensate having a fluorescence which is at least 30% higher than that of Acridine Orange Base when measured as the maximum counts within the range of 450 nm to 650 nm at an excitation wavelength of 442 nm when the Acridine Orange Base is used at a concentration of 0.31 mg/liter in methanol and the condensate is used at a concentration of 0.05 weight percent in tetrahydrofuran, said condensate being that of glyoxal and a member selected from the group consisting of: (a) phenol; (b) a mixture of phenol and another monocyclic-monohydric phenolic monomer having from 7 to 9 carbon atoms wherein the another monomer makes up to about 20 mole % of the mixture; and (c) mixtures thereof.