Metal treatment – Compositions
Patent
1990-05-11
1991-02-26
Rosenberg, Peter D.
Metal treatment
Compositions
148 23, 148 25, B23K 3534
Patent
active
049959212
ABSTRACT:
Solder paste vehicles using blends of monofunctional and polyfunctional alcohols are described. The blend may have a major portion of a low viscosity, monofunctional alcohol solvent and a minor portion of a high viscosity polyfunctional alcohol thickener. The monohydric solvent has a room temperature viscosity of at least 3 centipoise and from about 3 to 18 carbon atoms and may include such materials as 2-butanol, 1-hexanol, 1-heptanol, 1-octanol, 1-nonanol, 1-dodecanol, 2-ethoxyethanol, 2-(2-ethoxyethoxy)ethanol, 2-(2-butoxyethoxy)ethanol, n-hexadecanol, n-octadecanol, benzyl alcohol and mixtures thereof. The polyalcohol has a room temperature viscosity of between about 26 to about 1500 cp and includes compounds such as 1,2-ethanediol; 1,2-propanediol; 1,3-propanediol; 1,2-butanediol; 1,3-butanediol; 1,4-butanediol; 1,2-pentanediol; 1,5-pentanediol; 2,4-pentanediol; 2,5-hexane-diol; glycerol; 1,2,4-butanetriol; 2,2'-(ethylenedioxy)diethanol; 1,12-dodecane-diol; 1,16-hexanedecanediol and mixtures thereof. These blends give improved solubility of organic acid fluxing agents, provide relatively high viscosities of the solder paste and permit lower amounts of solvent to be used.
REFERENCES:
patent: 3436278 (1969-04-01), Poliak
patent: 3734791 (1973-05-01), Poliak
patent: 3796610 (1974-03-01), Sarnacki
patent: 4460414 (1984-07-01), Hwang
Davis James L.
Landreth Bobby D.
Nounou Fadia
Pennisi Robert W.
Motorola Inc.
Nichols Daniel K.
Rosenberg Peter D.
LandOfFree
Solder pastes using alcohol blends as rheological aids does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solder pastes using alcohol blends as rheological aids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solder pastes using alcohol blends as rheological aids will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-292364