Patent US4454050A successfully refreshed from Google Patents.
US4454050A
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Aqueous release agent and lubricant
Assignee: Arkema Inc
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Filing: 1983-03-21
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Granted: 1984-06-12
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Expires: 2003-03-21
Abstract
Abstract A release agent and lubricant composition particularly suitable for die casting operations includes a combination of an alkali metal salt of an aromatic polycarboxylic acid, such as phthalic acid, and an alkali metal salt of an aliphatic polycarboxylic acid such as adipic acid. Other additives may be present including thickeners, preservatives, surfactants, pigments, corrosion inhibitors, and dyes.
Inventors
- 👤 Jerome W. Bertell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:56
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M105/00; C10M105/08; C10M105/22; C10M105/26; C10M105/28; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/30; C10M129/34; C10M129/48; C10M129/52; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/103; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/1233; C10M2207/125; C10M2207/127; C10M2207/1273; C10M2207/129; C10M2207/1293; C10M2207/14; C10M2207/1403; C10M2207/142; C10M2207/144; C10M2207/1443; C10M2207/146; C10M2207/1465; C10M2207/22; C10M2207/223; C10M2207/26; C10M2207/2606; C10M2207/262; C10M2207/2623; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/12; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/01; C10N2050/015; C10N2050/02
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
72 words
An aqueous release agent and lubricant comprising water and from about 0.15 to 30 percent by weight of composition of alkali metal salt of an aromatic polycarboxylic acid and from about 0.015 to 15 percent by weight of composition of an alkali metal salt of an aliphatic polycarboxylic acid such that the weight ratio of aromatic polycarboxylic salt acid salt to aliphatic polycarboxylic acid salt ranges from about 50/50 to about 95/5.
Claim 2
Dependent Claim
72 words
An aqueous release agent and lubricant comprising water and from about 0.15 to 30 percent by weight of composition of alkali metal salt of an aromatic polycarboxylic acid and from about 0.015 to 15 percent by weight of composition of an alkali metal salt of an aliphatic polycarboxylic acid such that the weight ratio of aromatic polycarboxylic salt acid salt to aliphatic polycarboxylic acid salt ranges from about 50/50 to about 95/5.
Claim 3
Dependent Claim
50 words
The release agent and lubricant according to claim 1 wherein the aromatic polycarboxylic acid is selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, mellitic acid, benzene pentacarboxylic acid, trimellitic acid, hemimellitic acid, trimesic acid, pyromellitic acid, prehnitic acid, mellophanic acid, naphthalene dicarboxylic acids and mixtures thereof.
Claim 4
Dependent Claim
32 words
The release agent and lubricant according to claim 1 wherein the aliphatic polycarboxylic acid is selected from the group consisting of azelaic acid, adipic acid, sebacic acid, dodecanedioic acid and mixtures thereof.
Claim 5
Dependent Claim
35 words
The release agent and lubricant according to claim 1 wherein the alkali metal salt of an aromatic polycarboxylic acid is disodium isophthalate and the alkali metal salt of the aliphatic polycarboxylic acid is disodium adipate.
Claim 6
Dependent Claim
24 words
The release agent and lubricant according to claim 1 wherein the alkali metal is selected from the group consisting of sodium, potassium, and lithium.
Claim 7
Dependent Claim
25 words
The release agent and lubricant according to claim 1 further comprising from about 0.002 to 5.0 percent by weight of composition of a thickening agent.
Claim 8
Dependent Claim
17 words
The release agent and lubricant according to claim 6 wherein the thickening agent is an organic polymer.
Claim 9
Dependent Claim
16 words
The release agent and lubricant according to claim 7 wherein the thickening agent is hydroxyethyl cellulose.
Claim 10
Dependent Claim
24 words
The release agent and lubricant according to claim 1 further comprising from about 0.002 to 0.2 percent by weight of composition of a germicide.
Claim 11
Dependent Claim
123 words
A hot forming process for metal comprising applying an aqueous release agent and lubricant comprising water and from about 0.15 to 30 percent by weight of composition of alkali metal salt of an aromatic polycarboxylic acid and from about 0.015 to 15 percent by weight of composition of an alkali metal salt of an aliphatic polycarboxylic acid such that the weight ratio of aromatic polycarboxylic acid salt to aliphatic polycarboxylic acid salt ranges from about 50/50 to about 95/5 to the surface of a hot die so as to form a dry film on said surface, placing the metal in the die, forming the metal into a solid shape which conforms to the die, and removing the solid shaped metal from the die.
Claim 12
Dependent Claim
123 words
A hot forming process for metal comprising applying an aqueous release agent and lubricant comprising water and from about 0.15 to 30 percent by weight of composition of alkali metal salt of an aromatic polycarboxylic acid and from about 0.015 to 15 percent by weight of composition of an alkali metal salt of an aliphatic polycarboxylic acid such that the weight ratio of aromatic polycarboxylic acid salt to aliphatic polycarboxylic acid salt ranges from about 50/50 to about 95/5 to the surface of a hot die so as to form a dry film on said surface, placing the metal in the die, forming the metal into a solid shape which conforms to the die, and removing the solid shaped metal from the die.
Claim 13
Dependent Claim
46 words
The process of claim 10 wherein the aromatic polycarboxylic acid is selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, mellitic acid, benzene pentacarboxylic acid, trimellitic acid, hemimellitic acid, trimesic acid, pyromellitic acid, prehnitic acid, mellophanic acid, naphthalene dicarboxylic acids and mixtures thereof.
Claim 14
Dependent Claim
28 words
The process of claim 10 wherein the aliphatic polycarboxylic acid is selected from the group consisting of azelaic acid, adipic acid, sebacic acid, dodecanedioic acid and mixtures thereof.
Claim 15
Dependent Claim
31 words
The process of claim 10 wherein the alkali metal salt of an aromatic polycarboxylic acid is disodium isophthalate and the alkali metal salt of the aliphatic polycarboxylic acid is disodium adipate.
Claim 16
Dependent Claim
20 words
The process of claim 10 wherein the alkali metal is selected from the group consisting of sodium, potassium, and lithium.
Claim 17
Dependent Claim
28 words
The process of claim 10 wherein said aqueous release agent and lubricant further comprises from about 0.002 to 5.0 percent by weight of composition of a thickening agent.
Claim 18
Dependent Claim
13 words
The process of claim 10 wherein the thickening agent is an organic polymer.
Claim 19
Dependent Claim
12 words
The process of claim 10 wherein the thickening agent is hydroxyethyl cellulose.
Claim 20
Dependent Claim
26 words
The process of claim 10 wherein said aqueous release agent and lubricant further comprises from about 0.002 to 0.2 percent by weight of composition a germicide.
Claim 21
Dependent Claim
17 words
The process of according to claim 10 wherein said composition is applied to the die by spraying.
Claim 22
Dependent Claim
42 words
The process according to claim 10 wherein said hot forming process for metal is the die casting of aluminum or its alloys in which the molten metal is injected into the die and the metal is cooled and solidified in the die.
References Cited (Backward Citations)
US2726215A
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US2959547A
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US3298953A
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US3657123A
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GB2046298A
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US4409113A
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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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |