B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/142
B32B 7/10 (2006.01) B05D 5/12 (2006.01) B05D 7/26 (2006.01) C03C 17/32 (2006.01) H01B 3/30 (2006.01) H01L 21/312 (2006.01) H05K 1/03 (2006.01) H05K 3/38 (2006.01) H05K 3/46 (2006.01)
Patent
CA 1040942
METHOD OF COATING OXIDIZED INORGANIC SUBSTRATES WITH POLYIMIDE Abstract of the Disclosure Substrates with oxidized surfaces, as e.g. SiO2 layers on silicon semiconductors and aluminum surfaces, are wetted with an organic silicon compound in an organic solvent. The solvent is then removed in a dry atmosphere. Subsequently, a coating is applied from a solution of a polyamido carbon acid formed of pyromellitic acid anhydride and an aromatic amino component and the polyamido carbon acid is heated to form an adherent layer of polyimide.
206759
Brunner Friedrich
Frasch Peter
Schwerdt Friedrich
Vogtmann Theodor
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