摘要:
Water-insoluble compositions having substantial antioxidant activity which may be used as plasticizers are produced by liquid phase reaction of (a) dimercaptans or mercapto alcohols or combination of these with diols or polyols, (b) aldehydes and/or ketones, and (c) monomercaptans and/or mono-alcohols in the presence of an acid catalyst.
摘要:
Water-insoluble compositions are produced by the liquid phase reaction of primary thiadiols with formaldehyde and a monothiol in the presence of a protonic acid catalyst. These compositions have utility as plasticizers.
摘要:
Water-insoluble polythiaformals having substantial antioxidant activity are produced by the liquid phase reaction of primary thiadiols with formaldehyde and mono-alcohol in the presence of an acid catalyst.
摘要:
This invention relates to a method of and apparatus for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures of 5.degree. C. or less so as to achieve superior separation of gas components.
摘要:
A sheet which is a composite of (A) from about 1 percent to about 30 percent of a water-dispersible fiber such as wood fiber, (B) from about 2 percent to about 30 percent of a film-forming, water-insoluble, organic polymer such as a copolymer of styrene and butadiene and (C) from about 60 percent to about 95 percent of a finely-divided, substantially water-insoluble, non-fibrous, inorganic filler such as magnesium hydroxide is prepared by steps comprising:(I) providing an aqueous dispersion of the fiber;(II) mixing therewith (A) the inorganic filler and (B) the organic polymer in the form of an ionically stabilized latex;(III) colloidally destabilizing the resulting mixture to form a fibrous agglomerate in aqueous suspension;(IV) distributing and draining the aqueous dispersion on a porous substrate such as a wire to form a wet web; and(V) drying the web.
摘要:
This invention relates to a method of an apparatus and method for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures at or slightly above the freezing point of any liquid present so as to achieve superior separator of gas components. The composition of certain monomers and polymers are claimed.
摘要:
A three layer structural sheet material having improved resistance to delamination comprising a core layer of a composite paper having outer surface layers of thermoplastic resin adhered to both major surfaces thereof.
摘要:
An improved hollow fiber membrane device is obtained using an inner wrap extending no farther than 25 percent of the diameter of the hollow fiber bundle from the central, longitudinal axis of said bundle. The fibers within the inner wrap are not necessarily hollow. Optionally, an elastic outer wrap is also employed about the bundle.
摘要:
A dispenser includes a cradle (2) including generally upright sidewalls (4, 6), a handle (40) having a top and a bottom, and a plurality of sheets (30) releasably attached to the bottom of the handle (40), such that the plurality of sheets (30) faces the cradle (2). The cradle (2) can house a reservoir (14) containing a liquid product. The handle (40) is positioned by the upright sidewalls (4, 6) of the cradle (2) and is supported by the cradle (2). The liquid product can be dispensed from the reservoir (14) onto the surface of the outermost sheet (50) of the plurality of sheets (30). That sheet (50) then can be used to apply the liquid product to a surface, and can be removed and discarded after use, revealing a fresh sheet.
摘要:
A disposable cutting sheet for cutting and preparation of food items thereon comprises a first cut-resistant layer having a first surface area and including a cellulosic ply and a thermoplastic material ply, wherein the thermoplastic material ply of the first layer includes a plurality of apertures therethrough. The cutting sheet further includes a second layer having a second surface area and including a cellulosic ply and a thermoplastic material ply. The cellulosic ply of the first layer is disposed on and secured to the cellulosic ply of the second layer such that portions of the thermoplastic and cellulosic plies of the second layer extend beyond the surface area of the first layer to form a border completely surrounding the first layer.