US4071368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold release composition
Assignee: Lubeco Inc
•
Filing: 1976-07-12
•
Granted: 1978-01-31
•
Expires: 1996-07-12
Abstract
Abstract A composition particularly effective as a high temperature lubricant for molds used in glass-forming operations and effective at high temperatures of the order of about 1,000° F, comprising a mixture of graphite and a high melting inorganic oxide or salt, preferably potassium titanate, and an inorganic binder e.g. a slurry of magnesium oxide in a mixture of phosphoric acid and chromic acid. The mold lubricant composition also preferably contains a wetting agent, e.g. butyl Cellosolve (ethylene glycol monobutyl ether).
Inventors
- 👤 John R. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:18
CPC Classifications
C; C03; C03B; C03B40/00; C03B40/02
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
54 words
A mold release and lubricating composition comprising an oxidation resistant solid lubricant formed of a mixture of graphite and potassium titanate; and an inorganic binder, in proportions of about 6 to about 62 parts of graphite, and about 3 to about 56 parts of potassium titanate, to 100 parts of inorganic binder, by weight.
Claim 2
Dependent Claim
54 words
A mold release and lubricating composition comprising an oxidation resistant solid lubricant formed of a mixture of graphite and potassium titanate; and an inorganic binder, in proportions of about 6 to about 62 parts of graphite, and about 3 to about 56 parts of potassium titanate, to 100 parts of inorganic binder, by weight.
Claim 3
Dependent Claim
44 words
A composition as defined in claim 1, wherein said inorganic binder is selected from the group consisting of (1) phosphoric acid, (2) mixtures of phosphoric acid and chromic acid, (3) mixtures of phosphates, phosphoric acid and chromic acid, and (4) sodium and potassium silicates.
Claim 4
Dependent Claim
23 words
A composition as defined in claim 2, said inorganic binder being a mixture of alkaline earth metal phosphates, phosphoric acid and chromic acid.
Claim 5
Dependent Claim
35 words
A composition as defined in claim 2, wherein said inorganic binder is a mixture of a phosphate selected from the group consisting of magnesium, zinc, strontium, barium and calcium phosphates; phosphoric acid and chromic acid.
Claim 6
Dependent Claim
31 words
A composition as defined in claim 4, said phosphate being magnesium phosphate formed by adding magnesium oxide to phosphoric acid in an amount less than stoichiometric with respect to phosphoric acid.
Claim 7
Dependent Claim
11 words
A composition as defined in claim 1, including a wetting agent.
Claim 8
Dependent Claim
15 words
A composition as defined in claim 6, wherein said wetting agent is a polyhydric alcohol.
Claim 9
Dependent Claim
32 words
A composition as defined in claim 6, said wetting agent being a mono- or dialkyl ether of ethylene glycol, wherein the alkyl groups contain from about 2 to about 8 carbon atoms.
Claim 10
Dependent Claim
21 words
A composition as defined in claim 1, said graphite having a particle size ranging from about 0.1 to about 100 microns.
Claim 11
Dependent Claim
28 words
A composition as defined in claim 1, the amount of said lubricant to binder ranging from about 30 to about 70 parts per 100 parts binder, by weight.
Claim 12
Dependent Claim
29 words
A composition as defined in claim 4, the amount of said lubricant to binder ranging from about 30 to about 70 parts lubricant per 100 parts binder, by weight.
Claim 13
Dependent Claim
52 words
A mold release and lubricating composition comprising an aqueous dispersion of a mixture of about 6 to about 62 parts of graphite, and about 3 to about 56 parts of potassium titanate, to 100 parts of an inorganic binder, and about 30 to about 400 parts of a wetting agent, by weight.
Claim 14
Dependent Claim
52 words
A mold release and lubricating composition comprising an aqueous dispersion of a mixture of about 6 to about 62 parts of graphite, and about 3 to about 56 parts of potassium titanate, to 100 parts of an inorganic binder, and about 30 to about 400 parts of a wetting agent, by weight.
Claim 15
Dependent Claim
46 words
A composition as defined in claim 12, containing about 13 to about 44 parts of graphite, and about 9 to about 39 parts of said potassium titanate to 100 parts of said binder, and about 60 to about 125 parts of said wetting agent, by weight.
Claim 16
Dependent Claim
35 words
A composition as defined in claim 12, wherein said inorganic binder is a mixture of a phosphate selected from the group consisting of magnesium, zinc, strontium, barium and calcium phosphates, phosphoric acid and chromic acid.
Claim 17
Dependent Claim
31 words
A composition as defined in claim 14, said phosphate being magnesium phosphate formed by adding magnesium oxide to phosphoric acid in an amount less than stoichiometric with respect to phosphoric acid.
Claim 18
Dependent Claim
19 words
A composition as defined in claim 14, said wetting agent being a mono- or dialkyl ether of ethylene glycol.
Claim 19
Dependent Claim
43 words
A composition as defined in claim 14, and containing about 6 to about 30 parts of graphite, about 17 to about 56 parts of potassium titanate, 100 parts of binder, and about 35 to about 345 parts of said wetting agent, by weight.
Claim 20
Dependent Claim
44 words
A composition as defined in claim 14, and containing about 13 to about 24 parts of graphite, about 26 to about 39 parts of potassium titanate, about 100 parts of binder and about 62 to about 126 parts of said wetting agent, by weight.
Claim 21
Dependent Claim
48 words
A composition as defined in claim 18, containing about a 2 to 1 ratio of potassium titanate to graphite, by weight, and wherein said wetting agent is a mono- or dialkyl ether of ethylene glycol, wherein the alkyl groups contain from about 2 to about 8 carbon atoms.
Claim 22
Dependent Claim
45 words
A composition as defined in claim 15, containing about 2 to 6 parts of magnesium oxide to 60 parts of phosphoric acid (H 3 PO 4 ), by weight, and about 15 to about 35 parts chromic acid, per 60 parts phosphoric acid by weight.
References Cited (Backward Citations)
US2784108A
Cited
US3248251A
Cited
US3248250A
Cited
US3928673A
Cited
US3915870A
Cited
US3994847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |