Abstract: A sample spinner for a nuclear magnetic resonance spectrometer having improved operating characteristics is described comprising a rotor supported at both ends by support gas bearings and positioned by a thrust gas bearing. Improved support gas bearings are also described which result in a spinner exhibiting long-term stable operation characteristics.
Abstract: A double-tuned single coil probe for a nuclear magnetic resonance spectrometer having improved sensitivity is described comprising a double-tuned circuit means in which the low frequency irradiation is fed to a transmission line through an inductor means. The double-tuned circuit means of the invention may be remotely disposed from the magnetic field which results in greater sensitivity.
Abstract: Vulcanizable rubber compositions are described which are inhibited from premature vulcanization by thio-substituted-1,3,5-triazine-diamine or -triamine.
Abstract: Compatibilized polymer blends are described comprising a blend of olefin polymer, nitrile rubber, and a compatibilizing amount of block copolymer comprising nitrile rubber compatibilizing segments and olefin polymer compatibilizing segments.
Abstract: Vulcanizable rubber compositions are described which are inhibited from premature vulcanization by activated methylene di(thioethers) in which the adjacent activating groups are either carbonyl or cyano. Novel compounds are also described.
Abstract: Thermoplastic blends comprising mixtures of dissimilar plastics and dissimilar rubbers are described; they are improved by incorporation of functionalized olefin polymer.
Abstract: Thermoplastic compositions are described comprising neutralized acrylic copolymer rubber reinforced by thermoplastic crystalline polyester which compositions exhibit improved high temperature properties.
Abstract: Rubber compositions and reinforced rubber articles are described which exhibit improved adhesion by the incorporation therein of an adhesive amount of certain N-(carboxyalkyl)maleamic acids.
Abstract: Vulcanizable rubber compositions are described which are inhibited from premature vulcanization by inhibitors consisting of a class of N, N'-disulfenyl phthalamides of the formula ##STR1## in which X is phenylene.