摘要:
Applicants have discovered an improved photodefined dielectric materials comprising poly(aromatic diacetylenes). The preferred poly(aromatic diacetylenes) are copolymers of aromatic diacetylenes. Specific examples are 1) a copolymer of 4,4'-diethynyldiphenyl ether and m -diethynyl benzene and 2) a copolymer of 4,4'-diethynyldiphenyl ether and 4,4'-bis(3-ethynylphenoxy)-2,2',3,3',5,5',6,6'-octafluorobiphenyl. These copolymers can be photochemically crosslinked in patterns with exposure of 30 mJ/cm²µm and 60 mJ/cm²µm, respectively, and patterns have been produced in 10 µm thick films with features as small as 12 µm.
摘要:
a composition for film formation which can be cured in a short time period and give a film having a low dielectric constant and excellent in heat resistance, adhesion and cracking resistance, a polymer for use in the composition and a process for producing the polymer. The composition prepared by dissolving the polymer having specific repeating units in a solvent has excellent film-forming properties. The polymer has repeating units represented by the following general formula (1): wherein Z and Y are as defined hereinabove.
摘要:
Katalystische Polymerisation von Gemischn aus Acetylen und Di- oder Polyalkinen mit Ziegler-Katalysatoren. Die neuen Polymerisate eignen sich als farbige Pigmente und als Farbüberzüge für Metalle, Glas oder Kunststoffe und zur Herstellung elektrischer oder magnetischer Bauteile.