Abstract: Novel polymers for rendering a nonconductive material conductive are disclosed. The polymers may be block copolymers comprised of a first block of polyoxazine or polyoxazoline and a second block comprising a thioether linkage-containing polyalkylene glycol or ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, X and P are as defined herein or an oxazoline polymer with pendant chains consisting of polyethylene oxide and polythioether. Composites of a nonconductive materials and the novel antielectrostatic polymers, uses of these composite materials, as well as methods for rendering nonconductive materials conductive by incorporating therein an antielectrostatic polymer are also disclosed.

Abstract: The invention relates to a novel information recording medium and the recording of information thereon. The recording medium material possesses both retention and expansion characteristics suitable for use with optical recording, reading and erasing systems.

Abstract: An optical recording structure comprises a thermally stable substrate and a polymeric layer deposited on the substrate comprised of a poly(ester-amide). Laser beams are directed at the deposited polymeric layer to record or erase information. The recording structure has an excellent dimensional and mechanical stability on storage, readily and easily records information, and has an ability to be easily and completely erased.

Abstract: A method of performing a nonsurgical blepheroplasty is provided which involves adhering opposing eyelid surfaces together to arrest ptosis or eyelid droop. Specific adhesive compositions are provided to permit oxygen permeability, long-lasting adherence and to be non-toxic with respect to the tissues involved. The adhesive is a mixture including an adhesive component, a thermoplastic elastomer component and a solvent component, with a midblock tackifier being an optional ingredient. The method and composition of the invention are primarily of utility to physicians and direct users seeking to bond human tissues together without the necessity of resorting to surgical techniques and is especially adapted to eyelid blepheroplasty procedures.

Abstract: A semi-insulating coating or surface layer is applied over insulating materials such as a circuit board or wiring harness or feedthrough insulator. The paint is electrically fixed to ground and as a result leaks away charge buildup before large pulse discharges occur. For example, pure tin oxide particles in phenoxy resin binder forms a paintable application for the invention.

Abstract: The present invention provides ballpoint pen ink compositions containing carbon black which are initially erasable and require little or no external pressure for ink delivery. The ink can be erased easily with a normal rubber eraser such as that found on pencils. The ink compositions of the present invention comprises: about 15% to about 40% of an aliphatic hydrocarbon, about 15% to about 40% of an aromatic hydrocarbon, about 1% to about 15% of a colorant, about 4% to about 40% of one or more of a preselected thermoplastic block copolymer, and about 5% to about 40% of a preselected parting agent.

Abstract: A simulated human ocular system for practicing the surgical techniques required for the removal of cataractous lenses utilizing posterior chamber lens emulsification and, optionally, the techniques required from small incision implantation and refractive surgery is provided. A human eye is generally imitated by an outer orb having three inner, connected chambers separated by membranes that correspond to the cornea, the iris, and the posterior chamber membrane. A lens phantom is releasably attached to the orb within the chamber located between the iris and the posterior chamber membrane. The lens phantom consists of a structured, water-sensitive composition, such as a cross-linked gelatin to which a water soluble polymer has been added, and is thereafter encapsulated within a transparent vinyl or vinylidene chloride copolymer film.

Abstract: A simulated human ocular system for practicing the surgical techniques required for the removal of cataractous lenses utilizing posterior chamber lens emulsification and, optionally, with the techniques required for small incision implantation is provided. A human eye is generally imitated by an outer orb having three inner, connected chambers separated by membranes that correspond to the corner, the iris, and the posterior chamber membrane. A lens phantom is releasably attached to the orb within the chamber located between the iris and the posterior chamber membrane. The lens phantom consists of a structured, water-sensitive composition, such as a cross-linked gelatin to which a water soluble polymer has been added, and is thereafter encapsulated within a transparent vinyl or vinylidene chloride copolymer film.

Abstract: A multi-layered engraved identification card includes a base layer having a first color and a color-changeable layer initially having a second color which is changeable to a third color contrasting with the first color upon exposure to radiant energy preferably having a wavelength of from 3,500 to 5,000 Angstroms, for a specified period of time. The color-changeable layer is initially prepared as a solution of a resin, a plasticizer, a radiant energy-sensitive coloring agent for causing the color change, and a solvent in which both the base and the resin of the solution are soluble. Alternatively, the solution may further include a cross-linkable plasticizer with a peroxide to cause the resin of the solution and the plastic of the base to be cross-linked and hence bonded permanently to the base.

Abstract: A multi-layered engraved identification card includes a base layer having a first color and a color-changeable, heat sensitive layer initially having a second color which is changeable to a third color contrasting with the first color upon heating to a first temperature for a specified period of time. The color-changeable layer is initially prepared as a solution of a resin, a plasticizer, a heat-sensitive coloring agent for causing the color change, and a solvent in which both the base and the resin of the solution are soluable. Alternatively, the solution may further include a cross-linkable plasticizer with a peroxide to cause the resin of the solution and the plastic of the base to be cross-linked and hence bonded permanently to the base. The engraving may be done after the color changeable layer is formed on the base, or alternatively, the base may be first engraved and the color-changeable solution applied to the non-engraved surface regions or applied to fill the engraved depressions.

Abstract: Solvent system for polyacrylonitrile polymers comprising nitromethane, water and fluoro alkanol. The solvent enables a high concentration of polymer to be dissolved without the solution being too viscous to cast as a film or to spin as a fiber. The solvent is sufficiently soluble that it can be removed substantially completely from the resulting film or fiber with consequent advantages of leaving no toxic residue and of not discoloring the end product.

Abstract: Vinyl halide resin compositions having improved fire resistance are formed by the introduction into said compositions of a small amount of a reactive hydroxy group-containing polyvalent metal salt of a phenol-aldehyde resin of the novolac type. The resulting vinyl halide resins evidence increase charring of the surface when exposed to heating by a flame or undergoing combustion, the surface char acting as a barrier to heat transfer from the flame and retarding the flow of volatile gases from the pyrolyzing resin.