US4867800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning composition of terpene compound and dibasic ester
Assignee: Petroferm Inc
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Filing: 1988-07-21
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Granted: 1989-09-19
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Expires: 2008-07-21
Abstract
Abstract A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises a terpene compound and dibasic ester solvent.
Inventors
- 👤 Kenneth T. Dishart
- 👤 Mark C. Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:35
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5004; C11D7/5022; C09; C09D; C09D9/00; C09D9/005; C23; C23G; C23G5/00; C23G5/02; C23G5/024; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26; C11D7/22; C11D7/24; C11D7/26; C11D7/266; H05K2203/00; H05K2203/07; H05K2203/0779; H05K2203/0783
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
51 words
A cleaning composition for removing solder flux residues from the surface of a substrate comprising (a) a terpene compound and (b) a dibasic ester solvent having a flash point at or above 100° F. by Tag close Cup method and at least 2.0 weight percent solubility in water at 25° C.
Claim 2
Dependent Claim
51 words
A cleaning composition for removing solder flux residues from the surface of a substrate comprising (a) a terpene compound and (b) a dibasic ester solvent having a flash point at or above 100° F. by Tag close Cup method and at least 2.0 weight percent solubility in water at 25° C.
Claim 3
Dependent Claim
21 words
The cleaning composition of claim 1 wherein the terpene compound is dipentene or the d-form of limonene or 1-form of limonene.
Claim 4
Dependent Claim
12 words
The cleaning composition of claim 2 wherein the terpene compound is dipentene.
Claim 5
Dependent Claim
15 words
The cleaning composition of claim 1 wherein the dibasic ester solvent is a dimethyl ester.
Claim 6
Dependent Claim
21 words
The cleaning composition of claim 1 wherein the dimethyl ester solvent is dimethyl adipate, dimethyl glutarate, dimethyl succinate or combination thereof.
Claim 7
Dependent Claim
15 words
The cleaning composition of claim 1 wherein a combination of dimethyl ester solvents is employed.
Claim 8
Dependent Claim
58 words
A process for removing solder flux residues from a surface of a substrate comprising contacting the surface with a cleaning composition containing (a) a terpene compound and (b) a dibasic ester solvent having a flash point at or above 100° F. by Tag close Cup method and at least 2.0 weight percent solubility in water at 25° C.
Claim 9
Dependent Claim
58 words
A process for removing solder flux residues from a surface of a substrate comprising contacting the surface with a cleaning composition containing (a) a terpene compound and (b) a dibasic ester solvent having a flash point at or above 100° F. by Tag close Cup method and at least 2.0 weight percent solubility in water at 25° C.
Claim 10
Dependent Claim
13 words
The process of claim 7 wherein the substrate comprises a printed circuit board.
Claim 11
Dependent Claim
14 words
The process of claim 8 wherein the printed circuit board contains solder flux residue.
Claim 12
Dependent Claim
20 words
The process of claim 7 wherein the terpene compound is dipentene or the d-form of limonene or 1-form of limonene.
Claim 13
Dependent Claim
11 words
The process of claim 10 wherein the terpene compound is dipentene.
Claim 14
Dependent Claim
14 words
The process of claim 7 wherein the dibasic ester solvent is a dimethyl ester.
Claim 15
Dependent Claim
20 words
The process of claim 7 wherein the dimethyl ester solvent is dimethyl adipate, dimethyl glutarate dimethyl succinate or combination thereof.
Claim 16
Dependent Claim
14 words
The process of claim 7 wherein a combination of dimethyl ester solvents is employed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |