| 摘要 |
<p>An antistatic layer of photographic material comprises 1,4-polyisoprene sulphonic acid or salts thereof, having a mol.wt. between 50,000 and 500,000 and a sulphur-group content of between 20 and 60 wt.%. The 1,4-polyisoprene pref. has a cis-content of at least 75% wt. and the 1,4-polyisoprene sulphonic acid preferably has a sulphonic acid content of 40-50%wt.</p> |
