Dichroism for light as well as magnetic anisotropy may be optically induced in a crystalline material manifesting spontaneous magnetic polarization within which a magnet cation of a valence state other than the nominal value is permitted and within which such an ion may occupy either of at least two crystallographically equivalent but magnetically in equivalent sites. An example of such a material is silicon-doped YIG in which Fe.sup.2.sup.+ may occupy any of four octahedral sites. Devices based...

Aerosol propellants and refrigerants based on trifluoropropene (CF.sub.3 CH=CH.sub.2) are disclosed.

The present invention relates to nonmagnetic copper-based alloys applicable in the apparatus for magnetic tape recording and playback. The alloy contains 4.5 to 4.9% nickel, 4.5 to 4.9% aluminum, 2.5 to 3% manganese, 0.7 to 1% chromium and copper.

A process is disclosed for the preparation of terephthalate based unsaturated polyesters by first reacting a mono unsaturated dicarboxylic acid anhydride having from 4-10 carbon atoms with a terephthalic acid glycol ester having the general formula: ##SPC1## Wherein R is C.sub.2 to C.sub.6 alkylene to form a glycol ester-mono unsaturated acid adduct and then reacting this adduct with an oxide having the general formula: ##SPC2## Wherein R.sup.1 is H or an organic radical having from one to eight...

Molding material comprising (a) a specially selected bitumen left as a residue in the distillation of petroleum which has been deacidified with calcium hydroxide and (b) an olefin polymer. The molding material may be pigment-colored and is used in the form of sheeting for insulation in construction.

A composite yarn comprising hexamethylene diamonium polyadipate or polyhescamethylene adipamide and a copolyamide prepared from hexamethylene diamonium adipate and a salt derived from a diacid containing six to 12 carbon atoms and a cycloalkane diamine has a latent crimp and is suitable for use in the manufacture of woven fabrics, knitted fabrics or carpets.

Internal fiber bonding laying of surface fuzz or fibers, with accompanying improvement in ancillary properties, e.g., improved surface and bursting strengths and printability, is accomplished by sealing the surface and/or body of paper or paperboard with a flour size in which the flour is present therein as a smooth, stable homogeneous colloidal co-solution, substantially free of undissolved fiber, of both the protein and starch fractions of the flour, the protein being present in substantially ...

An asbestos-based paper or board material has a fibrous component which includes from 0.8 to 25% by weight of amosite asbestos and 6 to 96% by weight of chrysotile asbestos, based on the total weight of the material, and is particularly useful for the manufacture of friction materials comprising from 20 to 40% by weight of a bonding agent and from 60 to 80% by weight of the asbestos-based paper or board material. The paper may additionally comprise organic fibre and inorganic filler other than a...

A cobalt/chromium based alloy suitable for use in making dental prostheses and surgical implants, and also for use in making machine parts which are subject to severe corrosive conditions and mechanical loads at high temperatures, comprises by weight, 26 percent to 31 percent chromium, from 4 percent to 6.5 percent molybdenum, up to 2 percent silicon, up to 6 percent maganese, up to 1 percent iron, up to 0.5 percent boron, up to 0.5 percent carbon, from 0.15 percent to 0.5 percent nitrogen, and ...

A solvent based detergent composition consisting essentially of (A) 10-80% liquid aliphatic chlorinated hydrocarbon solvents, (B) 10-40% liquid aliphatic ketones and/or liquid aliphatic esters, (C) 6 to 50% water soluble liquid alkanols having two to five carbon atoms and (D) 1-10% surface active agents.