| 摘要 |
A binder for a paint or varnish is constituted by the reaction product of a drying or semi-drying oil with a petroleum resin obtained by thermal polymerization of a steam-cracked petroleum distillate.ALSO:Steel plates are coated with an air-drying varnish whose binder is constituted by the reaction product of a drying or semi-drying oil with a petroleum resin obtained by thermal polymerisation of a steam-cracked petroleum distillate. |
