Abstract: A process directed to the preparation of acetals of malondialdehyde by reacting alkylvinyl ethers or esters with ortho formates in the gas phase with a heterogeneous catalyst.

Abstract: A rectangular or square shipping package or wrapper for a picture frame, mirror, or the like, having four corner protective forming elements is made from a one-piece, die-cut blank of corrugated board, paperboard or fiberboard with the corner protectors being defined by four, multi-paneled, fold-out flaps capable of capture from the confines of the blank and foldable into a plurality of corner protective pockets, each of the flaps being located in a separate quadrant of the blank.

Abstract: Extraction of chlorine bleached kraft wood pulps with aqueous peracids at pH values of 7 or below, aqueous sulfites at pH values below 10 or with certain non-aqueous solvents provides extracted pulps having lower residual color and permits use of lesser quantities of alkali or chlorine dioxide in subsequent bleach steps to attain brightness and strength levels comparable to those attained with pulps treated by alkaline extraction at pH values of 10 or higher. At a comparable level of alkali and chlorine dioxide or hypochlorite application, extraction of chlorinated pulp with peracids provides bleached pulps with enhanced brightness.

Abstract: A multi-stage process for the delignification and bleaching of lignocellulosic pulp is disclosed wherein the first alkaline extraction stage comprises extracting the pulp with caustic in the presence of oxygen and either a hypochlorite or a peroxide.

Abstract: An electrically conductive non-woven web for a heating element is formed from a non-woven sheet comprising conductive fibers which is saturated with a dispersion comprising conductive particles. Embodiments adapted for use at low voltages and at household voltages are provided. In a preferred, flame-resistant embodiment, the heating element is a sandwich containing, from bottom to top, a first insulating non-woven sheet comprising polyaramid fibers, an electrically conductive web comprising carbon fibers, polyaramid fibers, and carbon black. A pair of conductive strip attached in electrical contact to the web, and a second insulating non-woven sheet comprising polyaramid fibers.

Abstract: The present invention is an improved pouring spout opening configuration for a gable top (1) of an extended shelf life packaging container constructed of heat and pressure sealed thermoplastic coated paperboard with the pouring spout shape being defined by a continuous non-linear perforated line (20) placed in the underlying paperboard support layer of the laminate structure used for extended shelf life packaging containers.

Abstract: A hexagonal paperboard container, which comprises:(a) a one-piece, upstanding, generally tubular, reinforcing member consisting of six, foldably connected, substantially rectangular, upstanding, reinforcing panels;(b) a one-piece body member having two sets of three, substantially rectangular, foldably connected, upstanding side wall panels and a bottom wall foldably connected along its opposite sides to the central side wall panel of each set of side wall panels;(c) the sets of side wall panels being located on opposite sides of the tubular reinforcing member and the side wall panels being bonded to the reinforcing panels;(d) two of said reinforcing panels which are bonded to the central side wall panels having abutting major flaps foldably connected thereto at the bottom edges thereof;(e) the four remaining reinforcing panels having minor flaps foldably connected thereto at the bottom edges thereof;(f) said major and minor flaps extending substantially horizontally and fitting together to form a bottom wall

Abstract: The invention comprises a pallet constructed of a foldable material, such as corrugated paperboard, provided with a series of apertures in the bottom wall adapted to receive support blocks which are integrally attached to a plurality of runners which are disposed in spaced relationship upon the bottom wall. The corrugated paperboard is cut and scored in such a fashion as to permit it to be folded into a tray type pallet which serves to lock the plurality of runners, forming the rigid load-bearing deck of the pallet, into a fixed position.

Abstract: A shipping container for lidded, chimed cans designed to avoid "chime ride" and consequent damage to the can bodies is achieved by reverse folding the major and minor flaps forming the bottom wall and top wall of a regular slotted container and providing a one-piece corrugated pad between the bottom surface of the chimed cans and the inner surface of the bottom wall to form a rigid platform for the cans.

Abstract: A process for the delignification and bleaching of lignocellulosic pulp employing electronically excited oxygen generated in situ which comprises subjecting an aqueous slurry of said lignocellulosic pulp having a consistency of from about 0.01% to about 10.0%, by weight of oven-dried pulp, and whose slurry pH is between about 8 and about 13 to irradiation with ultraviolet light while admitting oxygen into said slurry.

Abstract: A process for preparing a flowable, nonaqueous, solvent-free highly-pigmented, low viscosity, thermoplastic, hot-melt coating compound, which comprises the steps of: (a) mixing in an initial stage from about 70% to about 95%, by weight, of pigment with from about 5% to about 30%, by weight, of low viscosity thermoplastic binder material for a period of time sufficient to obtain a homogeneous concentrate; and (b) mixing in one or more subsequent stages the homogeneous concentrate of step (a) with sufficient additional amounts of low viscosity thermoplastic binder material to yield a final homogeneous, flowable compound comprising from about 30% to about 70%, by weight, of pigment and from about 30% to about 70%, by weight, of low viscosity thermoplastic binder material.

Abstract: A process for the delignification of a lignocellulosic material, which comprises the steps of: (a) digesting the lignocellulosic material with an aqueous, alkaline pulping liquor containing from about 0.1% to about 10% based on the weight of oven-dried lignocellulosic material, of a cyclic amino compound selected from the group consisting of phenazine, dihydrophenazine, quinoxaline, and their alkyl, alkoxy, hydroxy, carboxy and amino derivatives at a temperature of from about 150.degree. C. to about 200.degree. C. for a period of from about 5 to about 480 minutes; and then (b) removing the aqueous pulping liquor from the lignocellulosic material with water or an aqueous wash liquor inert to the lignocellulosic material to obtain a delignified cellulosic material.

Abstract: A six-cell divider fabricated from an essentially rectangular unitary blank is provided. The divider comprises a central tongue with integrally attached protruding tabs which forms the central wall of the erected divider, symmetrically disposed pairs of first, second, third and fourth wall panels, and first and second floor panels. The protruding tabs are sandwiched between the opposing faces of the third and fourth wall panels, which are brought together to form single walls. Means for securing the tabs may be provided.

Abstract: In accordance with the present invention a paperboard container is provided with a hermetic end closure. The manufacturers flap, which is of unique construction, is foldably connected to an adjacent ungussetted panel. During the folding sequence, the manufacturers flap is sealed to a gussetted panel and the gussets at either end of the container are then caused to be moved outwardly to form projecting wings, and then the inner surfaces of the rib panels are brought into juxtaposed alignment for sealing engagement to form a continuous and uninterrupted hermetic closure.