Carpets having a primary backing and a pile consisting essentially of polyamide fibers stitched into the primary backing are described. The fibers are characterized in being stain resistant and the backing is characterized in being impervious to water. The carpet is easy to maintain since its fibers are stain resistant and water can be used to clean the carpet without fear of the water penetrating the backing and being absorbed by the padding, a situation which leads to rotting of the carpet and wooden floors.
This invention relates to methods for making a carpet having a secondary backing which is substantially impervious to aqueous solutions. The process involves applying a fluorochemical onto the underside of a secondary backing material, followed by drying and curing of the fluorochemical. This invention also includes the resultant carpets prepared from such a process.
A process for dyeing carpets composed of nylon fibers coated with stain blocker whereby any loss of stain resistance occurring during processing of the fibers is recovered. The process comprises adding a small amount of stain blocker to the dye liquor used in dyeing the carpets.
In a continuous application process with post-steaming, SAC's having molecular size (hydrodynamic volume) defined by elution volume (Ve) determined by Size Exclusion Chromatography (SEC) of between 6.3 and 6.5 ml. using the procedure described, are such that they are not too small so that migration into the fiber occurs (reduces ring dyeing effect) nor are they too large such that they require extremely long steaming times or the use of swelling agents to be effective. This is independent of the degree of sulfonation of the SAC.
This invention relates to a new process and group of products that are useful in preventing nylon and wool fibers, including carpeting and upholstery, from being permanently stained. Fibers can be permanently stained by food colors contained in foods spilled on the fiber. This new group of sulfonated phenol-formaldehyde or naphthol-formaldehyde and anionic surfactant compounds not only block the stain from the fiber but also minimizes any yellowing or discoloration of the treated fibers during the application and during the subsequent exposure to sunlight or commonly used lightfastness testing equipment.
This invention relates to a new process and group of products that are useful in preventing nylon and wool fibers, including carpeting and upholstery, from being permanently stained. Fibers can be permanently stained by food colors contained in food spilled on the fiber. This new group of sulfomethylated phenol-formaldehyde or naphthol-formaldehyde and anionic surfactant compounds not only block the stain from the fiber but also minimize any yellowing or discoloration of the treated fibers during the application and during the subsequent exposure to sunlight or commonly used lightfastness testing equipment.
