摘要:
Chlorophenyl trialkoxysilane, when added to a fractionated methyl alkyl siloxane lubricant for capacitive electronic discs, improves the playback performance and surface quality of the discs.
摘要:
Tetraphenyl siloxanes having the formula ##STR1## wherein R.sub.1 and R.sub.4 can be hydrogen or lower alkyl, R.sub.2 and R.sub.3 can be hydrogen, phenyl or lower alkyl and n is 0 or 1, when added to methyl alkyl siloxane lubricants for high-density information discs, improve the playback performance of the discs.
摘要:
A titanium coupling agent of the formula ##STR1## wherein R.sub.3 is methyl, ethyl or isopropyl and R.sub.4 and R.sub.5 are long chain alkyl groups of 8-20 carbon atoms, when added to a fractionated methyl alkyl siloxane lubricant for capacitive electronic discs, improves the playback performance of the discs.
摘要:
An electron flood exposure apparatus is disclosed which is comprised of an electron gun for providing an electron beam; a dispersing means for converting the electron beam into an electron flood; a post dispersion collimation and acceleration grid; and a target holder for holding a microlithographic resist which is to be exposed by the flood of electrons after collimation and acceleration by the acceleration grid.
摘要:
A method and apparatus for forming an insulator 62 on one major surface of a uniaxial tension focus mask 25 includes the steps of: positioning a mask sheet 27, having a multiplicity of openings 42 that extend from a first major surface of the mask sheet through a main body portion thereof to an oppositely disposed second major surface, at a distance from a charging gun 72, 172 having a source 74, 174 of a dry-powdered insulative material; charging and directing the dry-powdered insulative material toward the first major surface of the mask to provide a coating of the charged, dry-powdered insulative material thereon, and providing means 70, 272 for preventing the charged, dry-powdered insulative material from extending into the openings 42 and being deposited onto the main body portion of the mask surrounding the openings and the second major surface. The mask sheet 27, with the charged, dry-powdered insulative material on the first major surface thereof, is then heated to a temperature sufficient to sinter the insulative material. An apparatus for practicing this method also is described.
摘要:
Liquid crystal displays are improved by using as the alignment layer an alkali-soluble resin which is an addition resin of (a) at least one ethylenically unsaturated, ligand-free monomer and (b) at least one ethylenically unsaturated monomer having at least one carboxyl group. The resin is optically clear and is characterized by being exceptionally stable.