Patent ID: 6075082
Filing Date: 2000-06-13
Classification: C04B,C08F,C08G,C08K,C08L

Abstract:
An unfired, ceramic precursor material comprising a mixture of:a) a ceramic powder selected from the group consisting of aluminum oxide, silicon nitride, aluminum nitride, silicon carbide, silicon oxide, magnesium oxide, lead oxide, zirconium oxide, titanium oxide, steatite, barium titanate, lead zirconate titanate, clays, ferrite, yttrium oxide, zinc oxide, tungsten carbide, neodymium oxide and combinations thereof andb) a water soluble cross-linked condensation polymer,wherein the water soluble cross-linked polymer is prepared by polymerizing a water soluble condensation polymer and a cross-linking agent having at least two functional groups selected from the group consisting of: epoxides, aldehydes, carboxylic acids and combinations thereof, wherein the water soluble condensation polymer is obtained by polymerizing at least two compounds selected from:i) at least one carbonyl compound having at least two functional groups of the structure ##STR26## wherein Z is selected from --OH; --OR.sub.1 wherein R.sub.1 is selected from linear, cyclic or branched C.sub.1 -C.sub.8 alkylene groups, aromatic groups, polycyclic groups, heteroaromatic groups, --Cl, --Br and --F;ii) at least one polyamine having at least two amine groups selected from polyamines of the formula H.sub.2 N--R.sub.2 --NH--R.sub.3 --NH.sub.2wherein R.sub.2 and R.sub.3 may be the same or different and are selected from linear, cyclic or branched C.sub.2 -C.sub.8 alkylene groups, aromatic groups, heteroaromatic groups and polycyclic groups; polyamines of the formula ##STR27## wherein R.sub.4 and R.sub.4, are independently selected from hydrogen and C.sub.1l -C.sub.4 alkyl groups and a is an integer of from 0-8; andpolyamines of the formula ##STR28## wherein the sum of b+d is from 0 to about 8, c is from about 2 to about 50 and R.sub.5 and R.sub.5, are independently selected from hydrogen and C.sub.1 -C.sub.4 alkyl groups.