Metal treatment – Compositions – Fluxing
Patent
1994-10-24
1995-08-22
Rosenberg, Peter D.
Metal treatment
Compositions
Fluxing
148 23, 148 25, 228223, B23K 3534
Patent
active
054436605
ABSTRACT:
A no-VOC or low-VOC no-clean flux formulation for use in the assembly of electronic circuit boards having a conformal coating. The formulation comprises a solvent, a water-soluble weak organic acid, a halide-free, non-ionic surfactant, and a biocidal co-solvent. The formulation is compatible with the conformal coating, permits no or low VOC emissions into the environment, and eliminates post-soldering cleaning steps.
REFERENCES:
patent: 2581820 (1952-01-01), Stright
patent: 2980562 (1961-04-01), Matter et al.
patent: 3837932 (1974-09-01), Aronberg
patent: 3925112 (1975-12-01), Petersen, Sr. et al.
patent: 4070192 (1978-01-01), Arbib et al.
patent: 4098621 (1978-07-01), Strauss et al.
patent: 4360392 (1982-11-01), Roberts
patent: 4419416 (1983-12-01), Gupta et al.
patent: 4428780 (1984-01-01), Shedroff
patent: 4460414 (1984-07-01), Hwang
patent: 4762573 (1988-08-01), Biverstedt
patent: 4954184 (1990-09-01), Conn
patent: 4994119 (1991-02-01), Gutierrez et al.
patent: 4995921 (1991-02-01), Davis et al.
patent: 5004509 (1991-04-01), Bristol
patent: 5041169 (1991-08-01), Oddy et al.
patent: 5064482 (1991-11-01), Goobich
patent: 5085365 (1992-02-01), Turner
patent: 5092943 (1992-03-01), Davis
patent: 5094701 (1992-05-01), Norman
Product Information on Tergitol TMN-6 (90% Aqueous) Surfactant, by Union Carbide Chemicals and Plastics Company Inc., Industrial Chemicals Division, Copyright 1989, pp. 1-5, 13.
Material Safety Data Sheet on Alpha 4942 flux, by Alpha Metals, Jersey City, N.J., Revision date Nov. 6, 1992, 6 pgs.
Adams Karen M.
Baker Jay D.
Gao Guilian
Nation Brenda J.
Ford Motor Company
Malleck Joseph W.
May Roger L.
Rosenberg Peter D.
LandOfFree
Water-based no-clean flux formulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water-based no-clean flux formulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-based no-clean flux formulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2139118