A composition of matter useful in the production of photoinitiator compositions, said compositions of matter comprising 100 parts by weight of camphorquinone and from 1 to 50 parts by weight of an anthraquinone compound having in the 2-position a substituent of the formula: wherein R.sup.1 represents an optionally substituted hydrocarbyl radical and X represents ##STR1## wherein R.sup.2 represents hydrogen or an optionally substituted hydrocarbyl radical.

This invention pertains to a printed matter in which it is difficult to confirm an image in the state before the image appears, and by scratching the print surface with a coin a brilliant image appears. On a print substrate, an image of a ink composition containing a material having a greater hardness than that of the metal of a coin or medal, and a print layer having a contrast with respect to the print substrate or the image are printed. By effectively using human visual recognition characteri...

A leaf of printed matter has a metachromatic image 2 printed with an ink thermally changing its color and a non-metachromatic image 3 of a colorant not changing its color. A principal figure 5 is formed of the colorant, and a background 6 is formed with the metachromatic ink. The printed matter 1 may be used to transfer its images to a cup 10. The ink of the background scene 6 in the outer layer will turn to colorless within a prescribed range of temperatures, rendering visible only the central ...

In one aspect, the invention encompasses a semiconductor processing method wherein a conductive copper-containing material is formed over a semiconductive substrate and a second material is formed proximate the conductive material. A barrier layer is formed between the conductive material and the second material. The barrier layer comprises a compound having silicon chemically bonded to both nitrogen and an organic material. In another aspect, the invention encompasses a composition of matter co...

The invention relates to postal matter having an obverse and a reverse of which the obverse is provided with a portion allotted for affixing a postage stamp thereto etc. and another portion allotted for indicating an address. The postal matter in the form of this post card can be assembled and includes a sheet and a housing portion which can be secured to the reverse of the sheet and can accommodate a small article. The postal matter in the form of a sealed letter can be assembled and includes a...

A printed matter is printed by a ink containing a color coupler that is chromatized from a substantially invisible colorless state to a colored state by means of a color coupling additive applied by an applicator. The color coupler is at least one electron donative coloring compound selected from a group A composed of crystal violet lactone; malachite green lactone; 1.3-dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo[.alpha.]-fluoran; 3-cyclohexyl methylamino-6-methyl-7-anilinofluoran; benz...

Arrays of extended crystalline and non-crystalline structures are created using light beams coupled to microscopic polarizable matter. Polarizable matter adopts the pattern of an applied, patterned light intensity distribution. Further, polarizable matter itself scatters applied light, resulting in production of a stable, bound configuration of that matter. Alternatively, polarizable matter can simultaneously adopt the pattern of an applied patterned light intensity while the incident light scat...

A method of heating matter comprises supplying a gaseous mixture, which is reactable to produce heat, at a temperature above that at which spontaneous ignition occurs to a heating zone such that the gaseous mixture reacts to provide a heated fluid flow in said heating zone, and supplying matter to be heated to said heating zone.

There is disclosed a bioceramic matter as small in size as 300-475 mesh, comprising about 60.5-70.5% by weight of silica (SiO.sub.2), about 10.7-13.7% by weight of alumina (Al.sub.2 O.sub.3) and about 10.8-20.8% by weight of an effective-ingredient mix. The effecitive ingredient mix comprises about 1.4-3.4% by weight of ferric oxide (Fe.sub.2 O.sub.3), about 0.3-0.7% by weight of magnesium oxide (MgO), about 0.8-1.6% by weight of calcium oxide (CaO), about 1.5-3.5% by weight of sodium oxide (Na....

The invention provides a process for crystallization of amorphous and/or meta-stable crystalline regions of preformed particles by treating the particles with a supercritical or subcritical fluid containing an anti-solvent and a solvent. The invention further provides formulations comprising particles produced according to the present process containing one or more pharmacologically active substances and one or more pharmaceutically acceptable excipients, use of said formulations in the treatmen...