Desoldering systems and processes

Details Desoldering systems and processes Desoldering systems and processes

2007-10-23

2007-10-23

King, Roy (Department: 1742)

Metal treatment

Compositions

Fluxing

C228S035000, C428S605000, C428S624000

Reexamination Certificate

active

10718893

ABSTRACT:
A process for recovering a solder contaminant from a substrate surface with a wick structure comprising a plurality of heat conductive metal strands and a desoldering flux comprising a mixture of a first component of a partially polymerized rosin having a melting point of at least 98° C., a second component which is present in the desoldering flux formulation in an amount which is no more than the amount of the first component and comprises an ester of a polyhydric alcohol and benzoic acid, and a third component, which is present in an amount which is less than the amount of the second component, and comprises an aliphatic dicarboxylic acid. The solder contaminant is contacted with the wick structure in the presence of the desoldering flux and the wick structure and the solder contaminant are heated to melt the solder contaminant to cause the melted solder to flow into the wick structure in contact with the heat conductive metal strands. The wick structure containing the solder contaminant is withdrawn from the substrate surface.

REFERENCES:
patent: 4081575 (1978-03-01), Spirig
patent: 4092182 (1978-05-01), Arbib et al.
patent: 4204889 (1980-05-01), Allen et al.
patent: 4323631 (1982-04-01), Spirig
patent: 4940498 (1990-07-01), Rubin
patent: 4960236 (1990-10-01), Hedges et al.
patent: 5305941 (1994-04-01), Kent et al.
patent: 5484979 (1996-01-01), Gao
patent: 5909838 (1999-06-01), Jimarez et al.
patent: 1550648 (1979-08-01), None

Affiliated with

Also associated with

Rating

Desoldering systems and processes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Desoldering systems and processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Desoldering systems and processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3897518