US4354948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating varnishes having a graphite fluoride base and method of preparing same
Assignee: Produits Chimiques Ugine Kuhlmann
•
Filing: 1980-10-17
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Granted: 1982-10-19
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Expires: 2000-10-17
Abstract
Abstract Lubricating varnishes for metals obtained by mixing a dispersion of graphite fluoride in glycerine with a separately prepared aqueous dispersion of graphite fluoride, stabilized by a salt of a condensate of naphthalene sulfonic acid with formol.
Inventors
- 👤 Elisabeth Schoch
- 👤 Michel Rebiffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:47
CPC Classifications
C; C10; C10M; C10M111/00; C10M111/02; C10M173/00; C10M173/02; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2219/00; C10M2219/04; C10M2219/042; C10N; C10N2020/00; C10N2020/01; C10N2020/055; C10N2020/06; C10N2020/061; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A process for preparing graphite fluoride lubricating varnishes which comprises (a) mixing a graphite fluoride powder with glycerine, (b) separately forming an aqueous dispersion of graphite fluoride with a salt of a condensate of naphthalene sulfonic acid and formol and then (c) intermixing (a) and (b) to form an aqueous dispersion in which the total amount of graphite fluoride and glycerine is in a weight ratio of between about 0.3 to 1 and the condensate is present in a sufficient amount to stabilize the dispersion.
Claim 2
Dependent Claim
85 words
A process for preparing graphite fluoride lubricating varnishes which comprises (a) mixing a graphite fluoride powder with glycerine, (b) separately forming an aqueous dispersion of graphite fluoride with a salt of a condensate of naphthalene sulfonic acid and formol and then (c) intermixing (a) and (b) to form an aqueous dispersion in which the total amount of graphite fluoride and glycerine is in a weight ratio of between about 0.3 to 1 and the condensate is present in a sufficient amount to stabilize the dispersion.
Claim 3
Dependent Claim
25 words
The process according to claim 1 in which the mixture of graphite fluoride powder and glycerine (a) is within the ratio of 2 to 1.
Claim 4
Dependent Claim
24 words
The process according to claims 1 or 2 in which the graphite fluoride powder has a particle size between about 1 and 5 micrometers.
Claim 5
Dependent Claim
25 words
The process according to claims 1 or 2 in which the aqueous dispersion of graphite fluoride contains 5 to 50% by weight of graphite fluoride.
Claim 6
Dependent Claim
26 words
The process according to claims 1 or 2 in which the graphite fluoride particles in the aqueous dispersion have a particle size of approximately 1 micrometer.
Claim 7
Dependent Claim
35 words
The process according to claims 1 or 2 in which the aqueous dispersion of graphite fluoride contains 5 to 15% by weight of the sodium salt of a condensate of naphthalene sulfonic acid with formol.
Claim 8
Dependent Claim
45 words
An aqueous graphite fluoride lubricating composition comprising a graphite fluoride powder and glycerine having a total graphite fluoride/glycerine ratio of between about 0.3 to 1 and a salt of a condensate of naphthalene sulfonic acid and formol in a sufficient amount to stabilize the composition.
Claim 9
Dependent Claim
45 words
An aqueous graphite fluoride lubricating composition comprising a graphite fluoride powder and glycerine having a total graphite fluoride/glycerine ratio of between about 0.3 to 1 and a salt of a condensate of naphthalene sulfonic acid and formol in a sufficient amount to stabilize the composition.
Claim 10
Dependent Claim
20 words
The composition of claim 7 in which the graphite fluoride/glycerine ratio is within the ratio of about 2 to 1.
Claim 11
Dependent Claim
46 words
The process for the application of lubricating compositions according to claims 7 or 8 in which the compositions of claims 7 or 8 are spread or sprayed on the metal to be coated and heated for about one hour at a temperature of approximately 250° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |