US4530778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive coatings
Assignee: Eli Lilly and Co
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Filing: 1983-07-11
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Granted: 1985-07-23
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Expires: 2003-07-11
Abstract
Abstract A conductive pretreatment solution is disclosed which renders dried wood electrostatically coatable through several coatings while minimizing contamination of the topcoat. The pretreatment solution comprises a volatile liquid carrier selected from water and organic solvents, the carrier having dissolved therein, per 100 parts by volume of total solution, (1) from 0.2 to 3 parts by volume of an organic quaternary ammonium compound having a molecular weight below about 1000, (2) from 0.2 to 10 parts by volume of a low volatile liquid polyol having a molecular weight below about 400, and (3) from 0.1 to 3 parts by weight of an inorganic ionizable salt having a capacity to absorb moisture, especially chlorides of a cation selected from the group consisting of ammonium, magnesium and calcium.
Inventors
- 👤 Ronald S. Nelson
- 👤 John D. Loflin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
A conductive pretreatment solution comprising a volatile liquid carrier selected from the group consisting of water and organic solvents, said carrier having dissolved therein, per 100 parts by volume of total solution, (1) from 0.2 to 3 parts by volume of an organic quaternary ammonium compound having a molecular weight below about 1000, (2) from 0.2 to 10 parts by volume of a low volatile liquid polyol having a molecular weight below about 400, and (3) from 0.1 to 3 parts by weight of an inorganic ionizable salt having a capacity to absorb moisture.
Claim 2
Dependent Claim
94 words
A conductive pretreatment solution comprising a volatile liquid carrier selected from the group consisting of water and organic solvents, said carrier having dissolved therein, per 100 parts by volume of total solution, (1) from 0.2 to 3 parts by volume of an organic quaternary ammonium compound having a molecular weight below about 1000, (2) from 0.2 to 10 parts by volume of a low volatile liquid polyol having a molecular weight below about 400, and (3) from 0.1 to 3 parts by weight of an inorganic ionizable salt having a capacity to absorb moisture.
Claim 3
Dependent Claim
15 words
A solution as recited in claim 1 in which said salt is a chloride salt.
Claim 4
Dependent Claim
28 words
A solution as recited in claim 2 in which said chloride salt is a salt of a cation selected from the group consisting of ammonium, magnesium and calcium.
Claim 5
Dependent Claim
30 words
A solution as recited in claim 3 in which said solvent is constituted by organic solvents and from 0.1 to 4 parts water by volume per 100 parts total volume.
Claim 6
Dependent Claim
37 words
A solution as recited in claim 3 in which said quaternary compound has a molecular weight below about 400, said polyol has a molecular weight below about 200 and contains at least three hydroxyl groups per molecule.
Claim 7
Dependent Claim
51 words
A solution as recited in claim 5 in which said quaternary compound is present in an amount of from 0.5-1.5 parts by volume, said polyol is present in an amount of from 1.0-3.0 parts by volume and said chloride salt is present in an amount of from 0.2-1.5 parts by weight.
Claim 8
Dependent Claim
19 words
A solution as recited in claim 3 in which said volatile solvents contain at least 20% of alcoholic solvent.
Claim 9
Dependent Claim
19 words
A solution as recited in claim 7 in which said alcoholic solvent comprises from 5-15% of 2-ethoxy diethylene glycol.
Claim 10
Dependent Claim
13 words
A solution as recited in claim 5 in which said polyol is glycerine.
Claim 11
Dependent Claim
17 words
A solution as recited in claim 5 in which said quaternary compound is benzyl trimethyl ammonium chloride.
Claim 12
Dependent Claim
14 words
A solution as recited in claim 5 in which said salt is calcium chloride.
Claim 13
Dependent Claim
14 words
A solution as recited in claim 5 in which said salt is ammonium chloride.
Claim 14
Dependent Claim
17 words
A solution as recited in claim 1 including a dye colorant so as to constitute a stain.
Claim 15
Dependent Claim
17 words
A solution as recited in claim 1 including a pigment so as to constitute a pigmented stain.
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) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |