摘要:
A polymeric composition and method of preparation for application in sub-micron lithography, comprising a blend of A-B and B′-C block, random, branched, or graft copolymers, where: (i) the B and B′ blocks or grafts have attractive supramolecular interactions characterized by a negative Flory-Huggins parameter; (ii) the composition exhibits a microphase-separated, three-domain morphology with A, C, and B/B′ domains comprised largely of A blocks or grafts, C blocks or grafts, and a mixture of B and B′ blocks or grafts, respectively. Long-range ordering of nanometer-scale domain features has been achieved in thin films of such supramolecular polymer blends, while avoiding macrophase separation. The strategy offers a diversity of morphologies for sub-micron lithographic applications in tandem with ease of chemical synthesis.
摘要:
A polymer electrolyte composition including a metal salt and at least one polymer comprising a poly(glycidyl ether), where the at least one polymer is amorphous at ambient temperature. The poly(glycidyl ether) polymer can be a blend of poly(glycidyl ether) polymers, can be a poly(glycidyl ether) polymer blended with a mechanically strong solid polymer, and can be a block of a block copolymer that also includes a polymer block forming a mechanically strong solid polymer.
摘要:
A polymer electrolyte composition including a metal salt and at least one polymer comprising a poly(glycidyl ether), where the at least one polymer is amorphous at ambient temperature. The poly(glycidyl ether) polymer can be a blend of poly(glycidyl ether) polymers, can be a poly(glycidyl ether) polymer blended with a mechanically strong solid polymer, and can be a block of a block copolymer that also includes a polymer block forming a mechanically strong solid polymer.
摘要:
Polyolefin block and graft copolymers comprised of two or more semicrystalline polyolefin blocks or grafts and one or more amorphous polyolefin blocks can be blended with a low molecular weight fluid diluent that preferentially locates within and swells the amorphous domains of the block or graft copolymer, while preserving the crystallinity of the semicrystalline block domains. After mechanical or thermomechanical processing, such compositions combine softness with high strength and high recoverable elasticity. Compositions are also disclosed whereby the diluent species is removed from the composition, either before or after the mechanical or thermomechanical processing, in order to create a strong elastic material with an ultra-low entanglement density within the amorphous domains.
摘要:
A portable cartridge loading apparatus for holding, locating, and individually dispensing electrical junction boxes. The apparatus includes a positioning apparatus for locating the loader on a predetermined building element or stud. The apparatus has devices to locate each junction box in a predetermined depth and height location on each wall, at least two different height locations. The different height installation of each junction box is achieved without setting any other location device, other than repositioning the loading device in a second attitude on the building element or stud.
摘要:
The system of computer furniture includes a plurality of conference units which have a work surface with a straight portion and a 90.degree. curved portion at one end of the straight portion, a plurality of units having a straight work surface, a plurality of units having a quarter-round (90.degree.) work surface, a plurality of units having a half-round (180.degree.) work surface, and a plurality of units having one inside corner configuration. The units each include a first latch member on one end thereof and a second latch member on the other end thereof so that the units can be conveniently mated with and released from each other to provide flexibility in making various system arrangements. The latch member itself comprises two mating portions, one portion having a body and two truncated triangular elements extending from a surface of the body, with a space therebetween, the other portion having a body with two triangular slots therein to receive the triangular elements of one portion. The one portion includes a locking element member which moves between two positions to latch and then release the two portions.
摘要:
Apparatus for selectively, typically repetitively, moving a fixed message document to and from a photographing position on a document camera system. Logic control means on a fixed messsage carrier apparatus coact with system-operating means and transport means of the camera system to control the to and from movement. Any selected fixed message document can be handled. It is removably stored between flexible belts and cylindrical means that are in peripheral contact, and is unwound therefrom to the photographing position, and vice versa.
摘要:
Fluorinated polymers for use per se or in a blend with compatible homopolymer or copolymer which is not fluorinated, for providing a low surface energy (anti-stick, non-wetting, low friction) surface which is stable on immersion in water, has a weight average molecular weight ranging from 10.sup.3 to 10.sup.6 and comprises backbone containing (a) methylene groups and (b) side chain bearing groups with side chain on each side chain bearing group having the formula --Q--(CF.sub.2).sub.q F wherein Q comprises alkylene moiety and wherein the fluoroalkyl group attached to Q is spaced by r atoms from the atom in the backbone to which Q is attached, wherein q ranges from 6 to 15, r ranges from 6 to 18, and the ratio of q to r ranges from 0.6:1 to 1.8:1. Preferred fluorinated polymers include semifluorinated block copolymers of modified isoprene and styrene and semifluorinated ionenes.
摘要:
A carrel-like module which, in one configuration, accommodates a single user, and in an expanded configuration, accommodates two or more users. The carrel module includes an arcuate shaped writing panel, preferably having a concavely shaped rear edge opposite from a seated user and a convexly shaped near edge presented adjacent the seated user, with two end edges, respectively, connecting the rear and near edges. The end edges and the rear edge are bounded by upright panels, the panels extending generally above the writing panel to the head level of the seated user. The two panels presented adjacent the respective end edges are rotatably connected to leg-like support members located at corners of the writing panel formed by the intersection of the rear edge and the end edges, respectively, of the writing panel. The end panels are removably secured to the writing panel, such that they may be conveniently disengaged therefrom, and rotated about their associated leg members by the user. The associated leg members include integral stop elements arranged therewith to prevent further rotation of the end panels when they are coplanar with the nearest panel presented adjacent the rear edge. Hinged to the respective end edges of the writing panel are writing panel extensions, which extensions are held against the undersurface of the writing panel in the closed position. When the end panels are rotated to be coplanar with their adjacent rear edge panels, the writing panel extensions may be rotated from their closed position about the respective writing panel edges to an extended position coplanar with the writing panel, so as to extend the surface of the writing panel adjacent the rotated end panels.
摘要:
A method of preparing a polymer having a tapered block copolymer structure. The method comprises polymerizing a first olefin monomer and a different second olefin monomer in the presence of a catalyst supporting living or quasi-living polymerization. In certain embodiments, the catalyst comprises two neutral metal complexes. In preferred embodiments, a tapered block copolymer structure is formed by adding one monomer in a single batch at the start of the polymerization reaction, and adding a second monomer throughout the course of the reaction. The present invention also provides polymers having one or more tapered block copolymer sections, and compositions based on these polymers.