| 摘要 |
<p>There is described a low flammability carpet floor covering comprising a backing material, a tied-in pile yarn, and a back finish, wherein the pile yarn comprises low flammability synthetic fibers, the backing material comprises normal or low flammability synthetic fibers, and the back finish comprises a polyurethane composed of the radicals of the formula I to VII: where the proportions of the radicals I to III, based on their total amount, are within the following limits: the proportions of the radicals IV, V and VI, based on their total amount, are within the following limits: the radicals of the formula I, II and IV are polyester blocks having an average molecular weight of from 400 to 6000 and the proportions of the radicals of the formula VII, based on the total amount of all the components of the polyurethane resin, are from 5 to 35 mol %, preferably from 10 to 25 mol %, and a process for producing the low flammability carpet floor covering. There is further described an aqueous composition comprising this polyurethane resin and the use thereof for textile finishing.</p> |
