| 摘要 |
A powder coating method for un-primed aluminium and steel surfaces. The method utilizes a polyamide having at least some adjacent amide linkages along the polymer backbone having at least one pendant alkyl branch of 1-3 carbon atoms and at least some adjacent amide linkages along the polymer backbone having sequences of at least seven consecutive carbon atoms, said polyamide having a relative viscosity in formic acid measured at 25 DEG C using 8.4 % polymer of at least 20 and a melting point in the range of 140-200 DEG C. The method permits a lower temperature than other polyamides. |
