WS PM-7630

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Composition:

WS PM-6730 consists of a highly branched co-polymer, of three-membered ring. Two corners of the molecule consist of -CH2- linkages. The third corner is a secondary amine group, -NH-.

WS PM-6730 has a molecular mass up to about 2 million grams per mole. Solids contents are the range of about 30%

Function:

WS PM-6730 is very effective for neutralization of excess anionic colloidal charge, especially under acidic and neutral pH conditions.

A secondary use can be for drainage and pitch control.

Use:

The branched nature and exceptionally high charge of WS PM-6730 make it an excellent choice for treatment of highly anionic furnish, furnish that has a high electrical conductivity, or thick-stock furnish. The branched structure is believed to provide some resistance to penetration of the molecule into very small slit-like pores in the fiber cell wall.

The colloidal charge, filtrate turbidity, and drainage characteristics of the furnish should be monitored when selecting or optimizing WS PM-6730 dosage.

The modified copolymer included improve the retention and the rate of drainage.

WS PM-6730 loses effectiveness in pH values in excess of about 8, since the amine groups rapidly lose their charged character above that point. Likewise, strongly varying pH values are expected to cause variations in the performance of WS PM-6730.

Feed

WS PM-6730 is delivered to the mill in the form of viscous solutions. Prepare feeding solutions by dispersing in fresh water, and feed in place of good agitation/mixing conditions.

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