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Polyammonium quaternary polymer for controlling anionic Trash and pitch deposition and treating coated broke

An anion and sediment technology, applied in fiber raw material treatment, waste paper processing, textiles and papermaking, etc., can solve problems such as machine downtime, felt clogging production substrates, etc.

Inactive Publication Date: 2000-10-11
NALCO CHEM CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the inclusion of coated waste paper produces paper that does not meet technical requirements due to holes and / or deposits of white pitch, machine downtime due to cardboard breaks, or more frequent machine cleaning, clogging of felts for the production of substrates, etc.

Method used

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  • Polyammonium quaternary polymer for controlling anionic Trash and pitch deposition and treating coated broke
  • Polyammonium quaternary polymer for controlling anionic Trash and pitch deposition and treating coated broke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Branched or crosslinked polydiallyldimethylammonium chloride solution

[0065] Ten cross-linked polyDADMAC solutions (polymer numbers 1-10) and one branched polyDADMAC solution (polymer number 11) were prepared according to Table 1 below.

[0066] get together

Embodiment 2

[0068] Crosslinked PolyDADMAC Water-in-Oil Emulsion

[0069] By mixing diallyldimethylammonium chloride (645g, 62%), N, N, N-triallyl ammonium hydrogen chloride (1.79g, 27.8%), adipic acid (5.00g), tetrasodium EDTA (0.08g) and deionized water (18.25g) to prepare the aqueous monomer phase. The mixture was stirred and heated to a temperature between 35-40°C to dissolve the solid material. Adjust the pH value to 3.5-3.8 with concentrated hydrochloric acid.

[0070] At a temperature of 50-55°C, by dissolving Span80 (POE (20) sorbitan monooleate, 10.00g), Mackamide NOA (10.00g), Tween61 (POE (4) sorbitan stearate, 5.00g ) and IL2296 (from ICI Nonionic Surfactants, 10.00 g) mineral oil (Isopod M, 270 g) solution to prepare the oil phase.

[0071] The monomer phase and oil phase are mixed together and homogenized until the particle size is 0.5-1.5 microns. The emulsion was then transferred to a 1.5 liter reactor and stirred. After the temperature had stabilized a...

Embodiment 3

[0076] reference polymer

[0077] Polymer Nos. 27-33 listed in Table 3 are standard polymers used in the pulp and paper industry.

[0078] Polymer No.

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PUM

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Abstract

A method is disclosed for controlling anionic trash and pitch deposition and treating coated broke which comprises the step of adding a polyammonium quaternary to a pulp and papermaking system. The polyammonium quaternary, which may be either branched or crosslinked, comprises at least one cationic monomer, preferably diallyldimethylammonium chloride, and at least one branching or crosslinking monomer, preferably N,N,N-triallylamine or N,N,N-triallylamine hydrochloride.

Description

field of invention [0001] This invention relates generally to the treatment of pulp and papermaking systems, and more particularly to branched or crosslinked polyquaternium polymers for the control of anionic waste and pitch deposits and the treatment of coated waste paper. Background of the invention [0002] Synthesis of polydiallyldimethylammonium chloride [0003] Synthesis of low to medium molecular weight cationic polyelectrolytes by cyclopolymerization of diallyldialkylammonium halides, especially diallyldimethylammonium chloride (DADMAC), is a well-known technique and has been used in many practical applications. In application, these polymers have been widely used as coagulants. Although linear polymer structures are typically prepared, a wide variety of polyfunctional vinyl monomers and synthetic methods that result in branching or crosslinking of the polymer can be used. Branched polymers retain a discrete molecular entity wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/45D21C5/02D21C9/08D21H21/02
CPCD21H17/455D21H21/02Y10S162/04D21C5/022D21C9/086Y02W30/64D21H17/45
Inventor 唐建生杰弗雷·R·克拉姆迈克尔·R·圣约翰劳拉·M·舍曼
Owner NALCO CHEM CO
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