Patent US4780502A successfully refreshed from Google Patents.
US4780502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold polish preparation
Assignee: Evonik Operations GmbH
•
Filing: 1986-12-03
•
Granted: 1988-10-25
•
Expires: 2006-12-03
Abstract
Abstract A water compatible gold polish preparation is described containing gold compounds, organic carriers and flux materials wherein the organic carrier mixture is formed of 50 to 100% of 1 or more N-substituted -2-pyrrolidones and 0 to 50% of one or more water dilutable synthetic resins.
Inventors
- 👤 Marion Lotze
- 👤 Dieter Frembs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:17
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5116; C04B41/5188; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C23; C23C; C23C24/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
60 words
A gold polish preparation comprising at least one gold containing compound which is a gold mercaptide compound which is soluble in an organic solvent, an organic carrier containing at least 50% by weight of at least one heterocyclic ketone represented by the structural formula: where an R is a straight or branch chained alkyl containing 1 to 6 carbon atoms.
Claim 2
Dependent Claim
60 words
A gold polish preparation comprising at least one gold containing compound which is a gold mercaptide compound which is soluble in an organic solvent, an organic carrier containing at least 50% by weight of at least one heterocyclic ketone represented by the structural formula: where an R is a straight or branch chained alkyl containing 1 to 6 carbon atoms.
Claim 3
Dependent Claim
12 words
The preparation of claim 1 which additionally contains finely divided gold powder.
Claim 4
Dependent Claim
16 words
The preparation according to claim 1 which additionally contains a gold compound insoluble in organic solvents.
Claim 5
Dependent Claim
12 words
The preparation according to claim 1 which additionally contains a flux material.
Claim 6
Dependent Claim
13 words
The preparation according to claim 1 which additionally contains a color influencing additive.
Claim 7
Dependent Claim
33 words
The preparation according to claim 1 in which the organic carrier additionally contains from 0 to 50% by weight of a binder material which is at least one synthetic resin dilutable with water.
Claim 8
Dependent Claim
27 words
The preparation according to claim 6 wherein the synthetic resin is selected from the group consisting of amine, phenolic, acrylic, alkyd and epoxy resins, and mixtures thereof.
Claim 9
Dependent Claim
12 words
The preparation according to claim 1 wherein the organic solvent is 1-methyl-2-pyrrolidone.
Claim 10
Dependent Claim
13 words
The preparation according to claim 7 wherein the resin is an amine resin.
Claim 11
Dependent Claim
21 words
The preparation according to claim 9 wherein the amine resin is a complete or partial methyletherated melamine or urea formaldehyde condensate.
Claim 12
Dependent Claim
35 words
The preparation according to claim 6 which contains 10 to 20 weight percent of amine resins and 80 to 90% of a complementary resin selected from the group consisting of acrylic, alkyd and epoxy resins.
Claim 13
Dependent Claim
20 words
The preparation according to claim 6 which additionally contains a catalyst to speed the drying time of the binder material.
Claim 14
Dependent Claim
24 words
The preparation according to claim 1 which additionally contains a member selected from the group of silver, paladium, or platinum compounds and mixtures thereof.
Claim 15
Dependent Claim
13 words
The preparation according to claim 1 wherein the gold compound is gold sulforesinate.
Claim 16
Dependent Claim
16 words
The preparation according to claim 1 which contains a mixture of gold powder and silver powder.
Claim 17
Dependent Claim
62 words
A two component gold polish preparation formed of a first component comprising a gold mercaptide compound in a solution of one or more heterocyclic ketones having the structural formula: ##STR2## wherein R is a straight or branch chain alkyl group from 1 to 6 carbon atoms, and a second component which comprises an additional gold containing component insoluble in an organic solvent.
Claim 18
Dependent Claim
62 words
A two component gold polish preparation formed of a first component comprising a gold mercaptide compound in a solution of one or more heterocyclic ketones having the structural formula: ##STR2## wherein R is a straight or branch chain alkyl group from 1 to 6 carbon atoms, and a second component which comprises an additional gold containing component insoluble in an organic solvent.
Claim 19
Dependent Claim
43 words
The composition according to claim 16 wherein the second component additionally contains from 0 to 50 weight percent of one or more synthetic resins dilutable in water selected from the group consisting of amine, phenolic, acrylic, alkyd and epoxy resins and mixtures thereof.
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) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |