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US 4,639,498 AGranted
Aerobically hardenable plastic compositions
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorWolfgang Ritter
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Abstract
The aerobically hardenable compositions which comprise polymerizable systems containing components having some degree of ethylenic unsaturation and an oxygen-stable polymerization initiator of at least one organo-boron compound containing at least a major portion of boron to carbon bonds and possibly some boron to hydrogen bonds in the molecule and the boron containing radials are bound to an organic polymer matrix which is oxygen stable, the compositions being useful as casting resins, fillers and adhesives.
Claims27
An aerobically hardenable plastic composition comprising
- (a) a component containing polymerizable ethylenic double bonds, and
- (b) an organo-boron compound having a boron-free polymer matrix with at least one organic polymer chain to which are attached, as side chains by hydroboration of ethylenic double bonds, 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 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 of from about 1 to about 500 before hydroboration.
Dependencies are inferred from the claim text.