Abstract: An acrylate ester polymer composition having the desirable optical properties of poly(meth)acrylates and an enhanced Tg comprises a blend of a conventional PMMA polymer or copolymer with a high Tg acrylate ester polymer prepared by pyrolyzing a copolymer of methyl methacrylate and t-butyl methacrylate. The blend exhibits a single Tg, intermediate between the Tg of the conventional PMMA polymer and that of the pyrolyzed methyl methacrylate/t-butyl methacrylate copolymer. The blend can be formed into products that have good clarity, low haze and low color.

Abstract: A curable coating composition for preparing an anti-static coating contains from about 50% by weight to about 90% by weight of a dispersion of colloidal silica and a curable methylsilsesquioxane in a lower (C.sub.1 -C.sub.5) alkanol, and from about 10% by weight to about 50% by weight of an aminofunctional silane component.

Abstract: A curable coating composition for preparing an anti-static coating contains at least one addition polymerizable ethylenically unsaturated monomer, a perfluoro ionic surfactant, and a polyethoxy or fluorinated polyethoxy auxiliary compound. The perfluoro ionic surfactant and the polyethoxy or fluorinated polyethoxy auxiliary compound are present in the composition in amounts effective to impart static-dissipative properties to polymerized coatings prepared therefrom.

Abstract: A building construction system using a universal structural extrusion and specially adapted fastener clips, particularly adaptable to a building system exclusively using material formed from plastic, polymeric substances.

Abstract: An improved perimeter strip for a magnetically attached auxiliary window system which includes gasket means (1) on the interior surfaces of a glazing holding channel of the strip and (2) adjacent the magnetic attachment means, whereby a flexibly tensional relationship between the strip and the magnetically attractable means associated therewith is provided.

Abstract: A four composition acrylate particle optimizes four sequence formulations: (1) beginning with a cross-linked elastomer core upon which (2) a successive layer of a principal quantity of cross-linked elastomer, which includes a graft-linking component, is polymerized, which in turn is (3) protectively encapsulated by a successively polymerized shell, which also includes a graft-linking component, and in turn is coated by (4) a final transition coating. The particle is chemically bonded into a unit and provides a radially graduated transition between the significantly different properties of the principal elastomer in the particle and the transition coating which is adapted in composition to a matrix system with which the particles may be blended.

Abstract: A process for the production of a moldable thermoplastic having enhanced resistance to impact, and the resulting product, is disclosed. A cross-linked bulk cast elastomer including a graft-linking agent is produced and is then finely divided and compounded with a catalyzed polymerizing monomer mixture, which may also include a minor proportion of a graft-linking co-monomer. Graft-linking of the elastomer to the resulting polymer occurs in situ; and the mass of the elastomer graft-linked to the polymerizing monomer is then compounded with a moldable matrix polymer and the compounded blend is then extruded through a die.

Abstract: A four composition particulate additive for blending with a moldable acrylic matrix resin is described. The particulate additive optimizes four sequenced formulations: (1) beginning with a cross-linked elastomer core upon which (2) a successive layer of the principal quantity of cross-linked elastomer, which includes a graft-linking component, is polymerized, which in turn is (3) protectively encapsulated by a successively polymerized thermoplastic shell, which also includes a graft-linking component, and in turn is coated by (4) a final thermoplastic transition coating which is compatible with the matrix resin. The particle is chemically bonded into a unit and provides a graduated transition between the significantly different properties of the principal elastomer in the particle and the matrix resin with which the particles are blended. The blends produced are particularly useful in glazing and the production of sanitary-ware and other products in which impact resistance is a desired quality.

Abstract: A protective wall paneling kit for recesses, for example, that surround a bath tub or shower stall, is disclosed. The kit, and its several components are primarily of extruded plastic. Extruded sheet panels are provided having a relatively thick structural base member, such as acrylonitrile-butadiene-styrene tripolymer, co-extruded with a thin layer of a protective plastic such as an acrylic having enhanced impact properties. Adjacent panels are joined and outward facing edges are sealed by further extruded joining and sealing strips, of a plastic such as polyvinyl chloride. The strips are of a single profile shape and are adaptable for either use. The panels and strips may be provided with sizing grooves during extrusion to allow convenient size adjustment. The joining and sealing strips may also be of a dual durometer polyvinyl chloride to permit hinging or tear stripe adjustment. The adjustment features allow the kit to be provided in a wide range of standard embodiments made from limited modular sizes.

Abstract: A multiple track window, preferably with extruded plastic framing and glazing sealing strips, is described. Glazing panels are releaseably held and slideable for opening within side framing channels which are formed by releaseably interlocking members which may be integrally hinged to one another. The glazing panels are also directly removeable from the channels formed. Sealing strips with tubular protrusions are attached to adjacent edges of the glazing panels and provide a seal at their central meeting. Such a sealing strip is also adapted for use as a sill sealing strip. Thus, a tightly sealable and efficient insulating window formed from improved elements in accordance with the disclosure is provided. The glazing panels of the window may be opened to adapt to climactic conditions or ventilation requirements, or may be removed for cleaning, maintenance or other reason.

Abstract: Improved panel holding and jointing strips and insulating window assemblies made therewith are disclosed. Hinged perimeter and jointer strips allow the use of insulating panels in large windows with multiple panes and commercial applications where strength and esthetic appeal are important considerations. The strips are also adapted to receive glazing or insulating panels of various thicknesses and are also useful in providing insulating windows for existing prime windows in an array.

Abstract: A panel-holding strip or sash of extruded plastic composition which includes a pair of opposed channel-forming webs connected by an integral longitudinally coextensive, flexible bight or hinge web; the channel-forming webs being relatively movable in the manner of a book cover between a first open position in which the webs are disposed in angular relation to admit the edge portion of a panel or pane therebetween and a second, closed position in which the webs are frictionally interlocked in channel-forming configuration to hold the edge portion of a panel or pane therebetween; each of the channel-forming webs being formed on their opposing inner surfaces with a first set of relatively engageable and interlocking ribs to frictionally and releasably hold the webs in their closed, channel-defining position and a second set of relatively flexible ribs arranged to frictionally grip and seal the edge portion of a panel or pane positioned between the channel-forming webs of the strip or sash.