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6881300 |
Sizing agent and recording paper comprising sizing agent
A recording paper coated or impregnated with a sizing agent containing a water-soluble soybean polysaccharide as an indispensable component, and optionally a cationic polymer and a surfactant,...
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6733625 |
Method and apparatus for treating pulp
The present invention relates to a method of treating chemical pulp in order to optimize the consumption of bleaching chemicals and to improve the quality of the pulp. Especially the invention...
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6666950 |
Process for deinking paper using a triglyceride
A method is provided for deinking paper. Repulped paper is treated with a deinking comprising a triglyceride. A preferred triglyceride is beef tallow. The deinking composition reduces foaming and...
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6464828 |
Polyester water-based defoamer
Polyester water-based defoamers are prepared by reaction of a dimer fatty acid, a fatty acid and two different polyalkylene polyols, e.g. polypropylene glycol and polyethylene glycol. The resulting...
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6273995 |
Paper bulking promoter, highly bulky pulp sheet, and process for producing the pulp sheet
A paper bulking promoter containing a compound represented by the following formula (1) with which a highly bulky sheet can be obtained without impairing paper strength: RO(EO) m (PO) n H (1)...
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5876559 |
Deinking of impact and non-impact printed paper by an agglomeration process
Deinking of impact and nonimpact printed paper is accomplished by repulping the printed paper in an alkali aqueous medium containing a deinking composition comprising one or more nonionic...
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5871663 |
Additive composition for reducing anthraquinone requirements in pulping of lignocellulosic material
An improved process for delignification of lignocellulosic raw material, such as wood chips, for the production of cellulose pulps for use in the manufacture of paper or paperboard and an improved...
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5725731 |
2-oxetanone sizing agents comprising saturated and unsaturated tails, paper made with the 2-oxetanone sizing agents, and use of the paper in high speed converting and reprographic operations
A sizing composition for fine paper that does not encounter machine feed problems in high-speed converting or reprographic operations is not solid at 35° C. and comprises a mixture of 2-oxetanone...
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5700351 |
Antifoams based on oil-in-water emulsions for the paper industry
Antifoams based on oil-in-water emulsions, in which the oil phase accounts for from 5 to 50% by weight of the emulsions and consists essentially of a mixture of (a) fatty esters of C 12 -C 22 ...
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5672244 |
High temperature deinking method using an alkylene oxide adduct
In the deinking of feed waste papers comprising magazines and newspapers at a weight ratio of magazine to newspaper of from 5/95 to 60/40, a reclaimed pulp with excellent qualities can be obtained...
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5601752 |
Defoamer compositions and process for defoaming aqueous systems
A defoaming composition of the following formula: ##STR1## wherein R is a hydrocarbon radical of from 10-20 carbon atoms and made be either saturated, unsaturated and either linear or branched in...
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5518581 |
Deinking agent for regeneration of waste paper
A floatation method for the regeneration of waste paper employs as a deinking agent a reaction product of an alkylene oxide with a mixture of products obtained by the reaction of a natural oil or...
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5464502 |
Anionic sulfonate surfactants in the washing and pulping operation
A method for enhancing pulp washing efficiency is disclosed. An anionic sulfonate surfactant is added within the washing or pulping operation to enhance the removal of lignin and spent cooking...
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5032224 |
Method of producing pulp
Alkaline pulping (such as Kraft) processes for various lignocellulosic materials, such as coniferous or disiduous wood chips, into pulp is improved by adding relatively small amounts of a digestive...
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4871423 |
Enhanced dithionite bleaching
Compositions and a method are disclosed for minimizing brightness reversion of chromophore-containing wood pulps, especially low-cellulose wood pulps, such as groundwood and thermomechanical pulps,...
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4673460 |
Deresination method of wood pulp
An improved method for deresination of wood chips or pulp is provided. The method comprises contacting the chips or pulp with an ethoxylated alkyl phenol deresinating composition during processing...
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4311552 |
Deinking of newsprint
Waste newsprint is defibered in an aqueous bath to which is added a deinking agent. The resulting slurry or pulp is rinsed, drained and formed into paper sheets. The deinking agent is a C 14 to C...
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4227965 |
Production of hardboard
A process for improving the strengths and resistance to water absorption of wood fiber hardboard, along with a lessening in the number of conventional steps, is disclosed. Hardboad is thereby...
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4107073 |
Pulp and papermaking additive
An antifoam/defoam composition used also as a drainage aid in pulp and papermaking process lines which consists of a water-base composition useful in the pH range 7.0-9.0. The milieu in which the...
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3932207 |
Process for obtaining cellulose from ligno-cellulosic raw materials
Prior to cooking, fragments of raw ligno-cellulosic material are impregnated with a solution of a lignin-solubilizing reactant in an organic solvent which has a boiling point higher than the...
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3448004 |
PREPARATION OF CHEMICAL PULP FROM WOOD CHIPS
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3438851 |
METHOD FOR THE REGENERATION OF WATER-RESISTANT PAPER AS WELL AS A METHOD FOR THE MANUFACTURE OF PAPER FROM THE MATERIAL OBTAINED AND THE SHEETS AND WEBS OF PAPER THUS OBTAINED
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3677886 |
Title is not available
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