Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1998-04-30
2000-06-13
Szekely, Peter A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524602, 524606, C08L 9304, C08L 7700
Patent
active
060750804
ABSTRACT:
By addition of a polyamide resin, which is compatible with rosin-based resins as the main components of liquid flux and solder paste flux, which is resistant to temperature variation and provides a damp proofing effect, and particularly a polyamide resin which is obtained by polycondensation reaction of a dicarboxylic acid of 2 to 21 carbon atoms and a diamine and has a softening point of 80.degree. to 150.degree. C., or a polyamide resin which is obtained by polycondensation reaction of a dimer acid and a diamine and has a softening point of 80.degree. to 150.degree. C., highly reliable low-viscosity liquid fluxes and solder paste fluxes, with which solderability is not impaired, where the flux residues on printed circuit boards after soldering undergoes no cracking or deterioration even under temperature variation, and which prevent poor insulation and migration even under high humidity environment, are provided.
REFERENCES:
patent: 4066585 (1978-01-01), Schepp et al.
patent: 4181775 (1980-01-01), Corke
patent: 4237036 (1980-12-01), Goodrich
patent: 4251276 (1981-02-01), Ferree, Jr. et al.
patent: 4284542 (1981-08-01), Boyce et al.
patent: 4424239 (1984-01-01), Nota et al.
patent: 4602058 (1986-07-01), Graham et al.
patent: 5162490 (1992-11-01), Drawert et al.
patent: 5346936 (1994-09-01), Buehler et al.
patent: 5420229 (1995-05-01), Burke et al.
patent: 5436078 (1995-07-01), Buhler et al.
Grant & Hackh's Chemical Dictionary, Fifth Edition, p. 241, 1984.
Katsuoka Ritsu
Matsui Kenji
Sekiguchi Koichi
Shibuya Takashi
Udono Naoyasu
Fujitsu Ten Limited
Szekely Peter A.
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