| 摘要 |
<p>Fundamental layer (FL) and multicoating layer (ML) are coated onto an article sequently. FL is composed of (a) granular polymer 25-65 wt.% (av. mw=at least 20,000, monoethylene type unsatd. hydrocarbon monomer completely substd. by F or (l), (b) at least one granular copolymer 30-50 wt.% contg. (i) F2C=CF2 99.5-92 wt.%, (ii) perfluorated vinylether of formula CF2=CF-O-Rf (Rf=perfluoroalkyl radical) or perfluorated ether (of formula (I), n=0-4) 0.5-8 wt.% and (iii) opt. CF2=CF-CF3 and (C) thermostable polymer (stable below 200 deg.C, Tg=above 130 deg.C) 0-25 wt.%. ML is composed of at least 10 wt.% of (b) [below 0.75 times of it in FL and 0-15 wt.% of (c).</p> |
