Abstract: An organoboron polymer having a backbone with a repeating of at least one kynyl group, at least one silyl group, at least one boranyl group, optionally at least one siloxyl group, and optionally an aryldisilyl group. The boron containing units in and the silicon containing units can be arranged in either random occurrences between each other or in the form of interdispersed block-type structures of each unit. The hybrid polymer is useful for making high temperature, oxidatively stable thermosetting plastics and for microelectronic applications via crosslinking to three-dimensional inorganic-organic hybrid polymers.

Abstract: A method of preparing a linear inorganic-organic hybrid polymer includes the steps of cooling a reaction medium to a first starting temperature below the ambient temperature and not less than about -10.degree. C., adding n-butyllithium and an organic compound capable of reacting with n-butyllithium to form an organo-dilithium compound to the reaction medium, allowing the organic compound and the n-butyllithium to react to form an organo-dilithium compound while allowing the reaction medium to warm, cooling the reaction medium to a second starting temperature below the ambient temperature and not less than about -10.degree. C.

Abstract: Novel class of organoboron thermosetting polymer and ceramics that are fod from an organoboron polymer having a backbone with a repeating of at least one alkynyl group, at least one silyl group, at least one boranyl group, optionally at least one siloxyl group, and optionally an aryldisilyl group. The boron containing units in and the silicon containing units can be arranged in either random occurrences between each other or in the form of interdispersed block-type structures of each unit. The thermosetting polymers are useful as high temperature, oxidatively stable thermosetting plastics and for microelectronic applications.