Abstract: Premoistened wipers are provided with wet strength through the use of colloidal sulfate esters of cellulose having a high degree of sulfate substitution, equal to or greater than 2.5. When such wipers are immersed in water, they become easily dispersible and hence flushable.
Abstract: Bleed-fast, dyed cellulosics particularly absorbent papers have been obtained with a particular class of water-soluble, cationic dyes reacted with a water-soluble dialdehyde, preferably glyoxal or glutaraldehyde. An aqueous printing fluid containing the water-soluble cationic dye and the dialdehyde, upon drying, produces a water-resistant dyestuff having improved bleed fastness upon cellulosic fibers.
Abstract: Water soluble wet strength resins containing maleamic acid and at least one other ethylenically unsaturated monomer, such as vinyl esters, olefins, acrylic and/or methyacrylic acids and/or their esters and/or their amindes are useful in the preparation of paper products having improved, off-machine dry strength and wet strength properties.
Abstract: Bleed-fast, dyed cellulosics particularly absorbent papers have been obtained with a particular class of water-soluble, cationic dyes reacted with a water-soluble dialdehyde, preferably glyoxal or glutaraldehyde. An aqueous printing fluid containing the water-soluble cationic dye and the dialdehyde, upon drying, produces a water-resistant dyestuff having improved bleed fastness upon cellulosic fibers.
Abstract: Bleed-fast, dyed cellulosics particularly absorbent papers have been obtained with a particular class of water-soluble, cationic dyes reacted with a water-soluble aldehyde, preferably formaldehyde, glyoxal or glutaraldehyde. An aqueous printing fluid containing the water-soluble cationic dye and the aldehyde, upon drying, produces a water-resistant dyestuff having improved bleed fastness upon cellulosic fibers.
Abstract: A three component adhesive is used for a nonwoven web in combination with a water based lotion containing borate ions. The adhesively bonded web has substantial tensile strength while saturated with the lotion for extended periods of time (e.g., months) and is water dispersible when exposed to a large volume of water. The three component adhesive system provides the tensile strength for the web during prolonged exposure to the water based lotion even under extreme temperature conditions. The components of the adhesive composition applied to the web are polyvinyl alcohol, a non-self-cross-linking, thermosetting, polymer emulsion and a self-cross-linking thermosetting polymer emulsion. An organic acid capable of complexing with borate, such as .alpha.-hydroxy acids or o-aromatic hydroxy acids, when in combination with borate ions in the lotion produces a synergistic effect upon the PVA adhesive in the web.
Abstract: The bleaching of fluff cellulosic pulp with a gaseous ozone bleaching agent at an acidic pH is often followed by an alkaline treatment, usually an alkaline extraction or an alkaline hydrogen peroxide bleaching treatment, at a much higher water content than the gaseous ozone treatment of the fluff pulp. Such a bleaching sequence of gaseous ozone bleaching followed by an alkaline treatment is improved by the present invention based upon two discoveries, first, the discovery of peroxygen bleaching values in the water associated with the fluff pulp leaving the ozone bleaching treatment, and second, the peroxygen values are destroyed at the alkaline pH used for the alkaline treatment that follows the gaseous ozone bleaching treatment. In accordance with the discoveries, a Low Consistency Acidic Retention Treatment is interposed between the gaseous ozone bleaching treatment and the alkaline treatment.
Abstract: A coated paper having high gloss and high bulk and a method for producing the paper wherein a high-solids coating is applied to the paper and pressed against a heated finishing surface.
Type:
Grant
Filed:
August 8, 1974
Date of Patent:
March 15, 1977
Assignee:
Scott Paper Company
Inventors:
Howard Lee Ranger, Mahlon Randall Kirk, Abbott Woodward Mosher
Abstract: An electrophotographic element comprised of a slightly conductive support and an insulating coating thereon comprised of an insulating resin and a substituted aniline photoconductor. An electron acceptor sensitizing agent can also be added to the insulating coating.
Abstract: Material is transferred by a laser beam from a transparent carrier film to a lithographic surface, thereby producing a planographic printing plate and a film having clear areas corresponding to the image on the plate.
Abstract: A transfer film comprising a transparent substrate having thereon a coating comprising particles which absorb laser energy and a self-oxidizing binder is improved by overlying the coating with a layer of ink - receptive resin. Material is transferred by a laser beam from the transparent carrier film to a lithographic surface, thereby producing a planographic printing plate and a film having clear areas corresponding to the image on the plate.
Abstract: A new dry planographic plate having a non-ink receptive silicone rubber background area that does not require a fountain solution to repel printing ink and process of producing this new plate comprising applying the photoresponsive sensitizer to a polymeric support film and bringing the sensitizer layer into intimate adhesive contact with an uncured silicone gum and thereafter curing the silicone gum.
Abstract: A release paper which is particularly useful in platen press applications and in the casting of self-supporting films which comprises a fibrous base having a coating thereon derived from an aqueous coating composition containing a release agent, a monomeric polyhydric alcohol and a cross-linkable, thermosetting resin.