초록 ▼

Film or fibre is made from a polymer of water soluble ethylenically unsaturated monomeric material that includes ionic monomer by extrusion and stretching, and a counterionic lubricant compound is absorbed into the surface of the fibre or film before or during the stretching. The counterionic lubric

Film or fibre is made from a polymer of water soluble ethylenically unsaturated monomeric material that includes ionic monomer by extrusion and stretching, and a counterionic lubricant compound is absorbed into the surface of the fibre or film before or during the stretching. The counterionic lubricant compound is also of use for providing a lubricated film on other extruded or comminuted elements of water swellable or water soluble polymeric material.

대표청구항 ▼

A polymeric fibre or film which has a gel capacity of at least 50 grams deionized water per gram polymer at 20°C. and which has been made by extruding into a gaseous atmosphere a solution in a solvent of a substantially linear polymeric material formed from water soluble ethylenically unsaturated mo

A polymeric fibre or film which has a gel capacity of at least 50 grams deionized water per gram polymer at 20°C. and which has been made by extruding into a gaseous atmosphere a solution in a solvent of a substantially linear polymeric material formed from water soluble ethylenically unsaturated monomeric material comprising ionic monomer and thereby evaporating the solvent and forming polymeric fibre or film, stretching the fibre or film and cross linking the stretched fibre or film, the improvement which comprises having applied to the surface of the extruded fibre or film before or during the said stretching a solution of a counterionic lubricant compound and thereby absorbing the lubricant compound into the said surface.