SYNTHESIS OF ELASTOMERS CONTAINING BORON,
Abstract
Monomers containing the 1, 2-dicarbaclovododecarborane unit (carborane, >C2 B10 H10) were prepared from substituted acetylenes and decarborane. A tough elastomer was produced by the emulsion copolymerization of butadiene and isopropenylcaborane. Polyesters were prepared from bis (hydroxymethyl) carborane and succinic, perfluoroglutaric, adipic and terphthalic diacid chlorides. The polycarborane adipate was a soft, tough, partially elastomeric material of low melting point. No press cure of this material was obtained, but with diisocyanate the material set up into a tough, leathery product. Other curing systems were attempted. Weight losses after air oven aging of the raw polyesters were obtained and found to be lower than a typical commercial polyester. A polymer prepared from bis (acryloxymethyl) carborane and methylphenylsilane was highly crosslinked. An analogous polymer, but without boron, was prepared from butylene dimethacrylate and methylphenylsilane. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 23, 1964
- Accession Number
- AD0432014
Entities
People
- Lynn G. Wiedenmann