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8172983 |
Controllable filler prefloculation using a dual polymer system
A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises sequential addition of high and low molecular weight flocculating agents to an...
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8168040 |
Manufacture of paper or paperboard
A process of making paper or paperboard with improved ash retention relative to total retention comprising the steps of providing a thick stock cellulosic suspension that contains filler, diluting...
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8152962 |
Method for producing paper with a high substance weight
A process for producing paper of high basis weight by draining a paper pulp on a wire in the presence of a combination of at least two polymers as a retention and drainage aid system, forming...
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8152961 |
Paper substrates useful in wallboard tape applications
This invention relates to paper products and/or substrates suitable for being made and/or converted into wallboard tape; which also may be known as joint tape and/or drywall tape, having a pH of at...
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8101710 |
Membrane separation process for removing residuals from polyamine-epihalohydrin resins
This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an...
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8101046 |
Methods for producing coating base papers and coated papers
The present invention provides methods for producing a base paper for coated printing paper and a coated paper by neutral papermaking using a roll and blade gap former type paper machine including...
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8097125 |
Temporary wet strength system for tissue paper
The invention relates to a composition comprising a (a) a temporary wet strength agent component capable of forming hemi-acetal bonds with the fibers of a tissue web to provide initial wet...
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8097126 |
Aqueous composition and use thereof for paper production
The present invention relates to an aqueous composition comprising at least one finely divided filler and at least one water-soluble amphoteric copolymer, a process for the preparation of such a...
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8088252 |
Salt-sensitive cationic polymeric binders for nonwoven webs and method of making the same
A solution with a salt-sensitive polymer binder for use in fibrous webs, where the binder contains a copolymer comprising repeat units derived from butyl acrylate, methyl methacrylate and amino...
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8066847 |
Creping adhesives comprising blends of polyaminoamide epihalolhydrin resins and polyamides
A composition comprising one or more polyaminoaminde epihalohydrin resins and one or more polyamides in a ratio of about 1:99 to about 99:1 based on polymer actives and use of the composition for...
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8029647 |
Method for the production of paper, paperboard and cardboard
Process for the production of paper, board and cardboard by draining a paper stock on a wire with sheet formation and drying of the sheets, the sheet formation being carried out in the absence of...
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8025767 |
Wet strength enhancers for paper
They are mixtures of (a) from 1 to 99.9% by weight of a water-soluble epihalohydrin-crosslinked polyamidoamine and(b) from 0.1 to 20% by weight of at least one other cationic polymer.
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8021516 |
Use of water-soluble polymer complexes in aqueous systems
A water-soluble interjacent complex that includes a first water-soluble polymer and one or more water-soluble monomers polymerized to form a second water-soluble polymer in the presence of the...
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8002949 |
Tissue products containing softness
A composition for cellulostic fibers containing amino silicone to impart improved hand feel. The composition may be included in a lotion applied to tissue paper and may include a hydrophilic...
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7998311 |
Enhanced surface sizing of paper
Size press compositions and methods for producing sized paper products, including liner board, are disclosed. The size press compositions contain at least one non-reactive cationic surface sizing...
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7972478 |
Method of producing high dry strength paper and cardboard and paper and cardboard thus obtained
In a method of producing a sheet of paper and/or cardboard and similar products, prior to the formation of the sheet from a fibrous suspension, at least two dry strength agents are added to the...
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7959761 |
Creping adhesive modifier and process for producing paper products
The present invention relates to the use of a quaternary ammonium complex comprising at least one non-cyclic amide as a modifier for a creping adhesive used on a creping cylinder, e.g., a Yankee...
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7951265 |
Aqueous slurries of finely divided fillers, their preparation and their use for the production of filler-containing papers
Aqueous slurries of finely divided fillers which are at least partly coated with polymers and which are obtainable by treating aqueous slurries of finely divided fillers with at least one...
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7938934 |
ASA emulsification with ultrasound
The invention provides a method and apparatus for optimally feeding an ASA emulsion into a papermaking process. An intense transmission of ultrasonic energy rapidly and efficiently forms an ASA...
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7932349 |
Membrane separation process for removing residuals polyamine-epihalohydrin resins
This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an...
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7922867 |
Method for producing paper, paperboard and cardboard having high dry strength
Process for the production of paper, board and cardboard having high dry strength by separate addition of a polymer comprising vinylamine units and of ligninsulfonic acid and/or a ligninsulfonate...
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RE42110 |
Fibrous sheet binders
A method and composition are disclosed for providing a two-part polymer binder additive for a fibrous sheet for improving both its strength and durability. The two-part polymer binder may be added...
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7883603 |
Method for making paper and cardboard with high dry strength and resulting papers and cardboards
A method for making a sheet of paper and/or cardboard and the like, comprises, prior to forming said sheet, adding to the fibrous suspension, separately or mixed, in any sequence of introduction,...
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7875150 |
Papermaking additive
A new class of polymeric additives for papermaking is disclosed as well as a process for their manufacture, a method for their use and a paper sheet containing the addition. The additives can be...
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7842162 |
Layer-by-layer nanocoating for paper fabrication
A method is provided for manufacturing paper by means of layer-by-layer nanocoating techniques. The method comprises the sequential processing of an aqueous pulp of lignocellulose fibers which is...
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7828934 |
Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems
This invention relates to resins useful for imparting strength to paper, the process of incorporating these resins into paper and the paper produced containing the resins. In particular the...
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7776182 |
Chlorohydrin and cationic compounds having high affinity for pulp or paper
Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing...
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7740742 |
Powder composition for paper manufacturing
The powder composition for paper manufacturing of the invention contains a hydrophobic organic compound (A), an emulsifying and dispersing agent (B), and optionally water-soluble saccharides (C)...
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7736466 |
Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability
This invention relates to a paper substrate containing high surface sizing and low internal sizing and having high dimensional stability, as well as methods of making and using the composition.
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7727359 |
Temporary wet strength resin for paper applications
A thermosetting resin comprising a reacted A) first partially crosslinked glyoxalated polymer comprising a reacted (i) first polyacrylamide backbone and (ii) a first glyoxal component; and B) a...
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7708862 |
Paper production with modified silica gels as microparticles
Use of silica sols containing sulfonic acid groups and/or mercapto groups as microparticles in paper production, in particular for paper retention.
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7628888 |
Cellulosic composition
A composition includes at least one hydrophilic polymer containing primary (—NH2) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of inc...
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7625462 |
Tissue products containing triggerable polymeric bonding agents
Polymeric bonding agents having a “triggerable” bonding functionality and which are in the form of particles or fibers, are blended with papermaking fibers prior to formation of a tissue web. Aft...
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7589153 |
Glyoxalated inter-copolymers with high and adjustable charge density
A method for making storage-stable glyoxalated inter-copolymers with higher and adjustable charge density suitable for use as a strengthening agent for paper. The glyoxalated inter-copolymers can...
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7585388 |
Fabric-creped sheet for dispensers
Fabric-creped absorbent sheet has an MD bending length of about 3.5 cm or more as well as an absorbency of about 3 g/g or more. The sheet is preferably produced without through drying or dry...
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7553395 |
Print media and methods of making print media
Print media and methods of making print media are disclosed. One exemplary print medium, among others, includes a substrate having a fibrous component. In addition, a cationic guanidine polymer...
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7547376 |
Paper improver
The invention provides a paper quality improver for papermaking that allows improvement in the bulky value and the optical properties such as brightness and opacity as well as in the paper strength...
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7541409 |
Hydrophobically modified polymers containing vinylamine or ethylenimine units, method for the production thereof, and their use as retention agents
Hydrophobically modified polymers containing vinylamine or ethylenimine units and obtainable by reacting (a) polymers containing vinylamine or ethylenimine units with(b) compounds of the formula...
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7494566 |
Composition for increasing cellulosic product strength and method of increasing cellulosic product strength
A composition includes water; at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at...
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7488402 |
Process for production of paper
The invention related to process for the production of paper from an aqueous suspension containing cellulosic fibers, and optional fillers, which comprises adding to the suspension (i) a cationic...
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7473334 |
Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers
A method of preparing a modified diallyl-N,N-disubstituted ammonium halide polymer and use of the polymer in combination with one or more high molecular weight, water soluble cationic, anionic,...
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7431799 |
Epichlorohydrin-based polymers containing primary amino groups used as additives in papermaking
Disclosed is a method for manufacture and application of a polymeric papermaking additive, which can be used in paper manufacture as an agent for improving retention, drainage, product strength and...
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7344621 |
Paper additive composition and method for producing paper using the same
A paper additive composition comprising an amide compound (a) obtained by reacting a polyamine and a carboxylic acid or a salt of the amide compound (a) is provided. The polyamine is shown by...
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7318881 |
Process for sizing paper
A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a...
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7303652 |
Reduced byproduct high solids polyamine-epihalohydrin compositions
A process for rendering a polyamine-epihalohydrin resin storage stable, is described. The process entails treating a polyamine-epihalohydrin resin composition, where the resin is formed in a...
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7303653 |
Sizing agent and recording sheet having the same
A sizing agent includes a vinyl copolymer having a repeating unit (i) having a quaternary amino group and a repeating unit (ii) derived from acrylic monomers having a hydrophilic polyoxyethylene,...
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7300545 |
Water-soluble polymer dispersion, process for producing the same and method of use therefor
A water-soluble polymer dispersion, process for producing the same and a method of use therefor. In particular, the water-soluble polymer dispersion is one comprising water-soluble polymer fine...
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7300546 |
Cellulose fiber having improved biostability and the resulting products
A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to...
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7297230 |
Method for producing cellulose fiber having improved biostability and the resulting products
A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to...
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7291695 |
Stable wet strength resin
A method of stabilizing an aqueous solution of polyaminoamide-epichlorohydrin resin comprising adjusting the pH of the solution to less than about 3 with strong acid and then adding to the solution...
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