The co(polymer) can be used as a flocculating, retaining and/or drainage, and dry strength agent.

The invention is a method of enhancing the strength of paper products, particularly the dry strength, without adversely affecting repulpability.

The invention also relates to paper with improved dry strength made by said process.

NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.

Method for producing paper by the addition of a retention - dry strength agent system.

Methods of making paper or paperboard having enhanced dry strength are provided.

Wet strength is also greatly increased as the hydrophobic treated regions retain substantially all the original dry strength.

An innovation in dry strength, Ultis Dry² Strength Technology is a platform providing recycled paperboard and packaging manufacturers higher levels of strength in a dry chemistry form.

By means of this selection, it is possible to produce preparations that are proving to be particularly effective at increasing the dry strength of paper and cardboard.

The instant invention relates to certain cross-linked polyamides and their use in the paper and board industry for improving dry strength.