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US 4,638,092 AGranted
New organic boron polymers and their use
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorWolfgang Ritter
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AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorWolfgang Ritter
Estimating the term…
The invention concerns new organo-boron compounds with strong aerobic initiator action to start polymerizations but with improved stability when in contact with atmospheric oxygen. The boron is connected to the molecule predominantly by boron to carbon and optionally boron to hydrogen bonds. The organo-boron compounds are characterized by the fact that the boron containing radicals are connected to an organic polymer matrix that is at least largely nonreactive when exposed to atmospheric oxygen. The boron containing radicals are preferably directly connected to a carbon atom of the polymer matrix by at least one valence of the respective boron atom. The advantageously viscous-fluid to solid masses that are preferably largely free of solvents contain especially hydro-boron radicals and/or organic boron radicals that can have alkyl, cycloalkyl and/or aryl radicals as substituents.
An organo-boron compound having a boron-free polymer matrix having at least one organic polymer chain to which are attached as side chains boron-containing groups in which the boron atoms are attached only to carbon atoms, wherein the boron-containing groups are attached to the polymer matrix through the boron atom, and wherein the boron-containing groups have either two hydrocarbon radicals in which the radicals are the same or different and each radical has up to 25 carbon atoms, or a cyclic hydrocarbon radical having up to 25 carbon atoms each end of which is bound to the boron atom with a boron-carbon bond, said boron-free polymer matrix being largely inert to atmospheric oxygen and having an iodine number from about 1 to about 500 before attachment of the boron-containing groups, said organo-boron compound being in the form of a viscous fluid to a solid mass that is largely free of solvents.
An organo-boron compound having a boron-free polymer matrix with at least one organic polymer chain to which are attached as side chains boron-containing groups of the structure R.sub.1 R.sub.2 B-- in which R.sub.1 is a hydrocarbon radical having up to 25 carbon atoms and R.sub.2) is either hydrogen, a hydrocarbon radical having up to 25 carbon atoms, or together with R.sub.1 forms a cyclic hydrocarbon group having up to 25 carbon atoms, each end of which is bound to the boron atom with a boron-carbon bond, said boron-free polymer matrix being largely inert to atmospheric oxygen and having an iodine number of from about 1 to about 500 before attachment of the boron-containing groups, said organo-boron compound being in the form of a viscous fluid to a solid mass that is largely free of solvents.
Dependencies are inferred from the claim text.