摘要:
The propulsion system for the acceleration of projectiles is based on a multi-perforated grain propellant and is composed from nitrocellulose, a crystalline energy carrier of a nitramine type and an inert plasticizing additive. The number of perforations is 2 to 6, preferably 4. The propellant grains can have round or polygonic profiles, depending on the number of perforations. The preferred grain geometry is cubic with a rectangular grain profile. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual group. The nitramine compound is present in a concentration in the range from 0 to 35% by mass, in particular in the range from 5 to 25% by mass. The nitramine compound is preferably RDX. The inert plasticizing additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticizing additive is present in a concentration of 0 to 10% by mass, preferred 0 to 5% by mass.
摘要:
The method for producing a propellant powder (TLP) with a layered grain structure starts with a green powder, which is impregnated in a watery emulsion with an energetic plasticizer and a polymeric deterrent. Propellant powders (TLP) can be produced in industrial quantities by avoiding the dangerous direct introduction of a blasting oil. The propellant powders (TLP) produced in this way have similar characteristics and a similar structure as the known propellant powders (TLP).
摘要:
A terpolymer with chemically amplified (acid labile) moieties and organosilicon moieties suitable for use as the binder resin for a photoimageable resist photoresist composition suitable for use in 193 nm photolithographic processes.The terpolymers have the following structural units: ##STR1## where R is a methyl or hydroxyethyl group, R.sup.1 is a hydrogen atom, a methyl group or a --CH.sub.2 COOCH.sub.3 group and R.sup.2 and R.sup.3 are each independently a hydrogen atom or a methyl group.
摘要:
A terpolymer containing 20 to 70 mole percent of an acid labile repeating unit, 3 to 40 mole percent of an acrylic acid or acrylonitrile based repeating unit and a repeating unit containing silicon side chains. The silicon side chain repeating unit is provided in sufficient amounts so that the terpolymer silicon content is 7 to 20 weight percent. The terpolymer is used primarily in the formulation of multilayer positive operating photoresists.
摘要:
The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticising additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual.The nitramine compound is present in a concentration in the range from 1 to 35% by weight, in particular in the range from 5 to 25% by weight. The nitramine compound is preferably RDX. The inert plasticising additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticising additive is present in a concentration of 1 to 5% by weight.
摘要:
The method for producing a propellant powder (TLP) with a layered grain structure starts with a green powder, which is impregnated in a watery emulsion with an energetic plasticizer and a polymeric deterrent. Propellant powders (TLP) can be produced in industrial quantities by avoiding the dangerous direct introduction of a blasting oil. The propellant powders (TLP) produced in this way have similar characteristics and a similar structure as the known propellant powders (TLP).
摘要:
Photoresist compositions are described, which are sufficiently transparent in the solvent-free state for radiation of a wavelength of approximately 193 nm, and which contain nonaromatic chemical groups, which can be converted into groups with aromatic structural elements (latent aromatic groups) under process conditions, for which an image structure comprised of the resist material is not disrupted. A preferred component with latent aromatic groups is bicyclo�3.2.2!nona-6,8-dien-3-one Resist coatings, which are produced with these compositions, show a stability in plasma etching, which is comparable with the stability of conventional resists based on phenolic resins.
摘要:
The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticizing additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual.The nitramine compound is present in a concentration in the range from 1 to 35% by weight, in particular in the range from 5 to 25% by weight. The nitramine compound is preferably RDX. The inert plasticizing additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticizing additive is present in a concentration of 1 to 5% by weight.
摘要:
A microbead comprising at least one thermoplastic polymers having distributed one or more compounds which are pigment precursors, the melting temperature of the lowest-melting polymer of the microbead being at least higher than the lowest temperature required to transform all pigment precursors in the microbead into the respective pigments.
摘要:
A radiation sensitive composition comprising (a) a terpolymer containing 20 to 70 mole percent of an acid-labile repeating unit, 3 to 40 mole percent of an acrylic or acrylonitrile based repeating unit and a repeating unit containing silicon side-chains and (b) a photo-acid generator. The silicon content of terpolymer is 7 to 20 weight percent. The composition is used primarily in the formulation of multilayer positive operating photoresists.