| 摘要 |
Fibre-forming polyolefin/non-compatible polymer mixtures comprise a dispersion of a minor proportion of the polyolefin in a matrix of the non-compatible polymer, the average particle size of the polyolefin component being not greater than 30 microns. Specified polyolefins are polyethylene and polypropylene, and specified non-compatible polymers are polyhexamethylene adipamide, poly-epsilon caprolactam, polyaminoundecanoic acid, polyethylene terephthalate, polycarbonates, polyurethanes and polyureas. The compositions may be prepared by stirring the molten polymers, preferably in the presence of a non-volatile dispersing agent, e.g. long chain fatty acids and salts, amides and esters thereof, and long chain fatty amines. The compositions may be melt spun into filaments. Examples describe the preparation of mixtures from polyhexamethylene adipamide, polyethylene and (1) stearic acid, (2) oleamide, (3) sodium stearate, (4) stearamide, (5) sodium oleate and (6) behenic acid; and from polyethylene with (8 and 10) polycaprolactam and oleamide and (9) polyaminoundecanoic acid. |
