US4153464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of water staining of aluminum
Assignee: Henkel Corp
•
Filing: 1978-07-24
•
Granted: 1979-05-08
•
Expires: 1998-07-24
Abstract
Abstract This invention relates to useful protective compositions and a method for protecting aluminum and aluminum alloy products against water staining. The method involves applying a continuous film of a protective composition to the surface of the aluminum product. The protective compositions useful for the invention are blends or reaction products of a polybasic acid and a partial ester of a polyol.
Inventors
- 👤 Robert J. Sturwold
- 👤 Walter E. Utz
- 👤 Nicholas Christ
- 👤 William R. Ford, Jr.
- 👤 George P. Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C10; C10M; C10M129/00; C10M129/02; C10M129/68; C10M129/76; C10M2207/00; C10M2207/28; C10M2207/30; C10M2209/00; C10M2209/10; C10M2209/11; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
143 words
A protective oil useful for the prevention of water staining of aluminous metal sheet consisting essentially of a major amount of an aliphatic or aromatic hydrocarbon oil having a 100° C. viscosity of 20 to 100 SUS and a minor amount but at least 0.1 weight percent of a protective composition having a hydroxyl value greater than 15 and derived from (a) an aliphatic or cycloaliphatic polybasic acid containing from 18 to 72 carbon atoms and 2 to 4 carboxyl groups and (b) a partial ester of a polyol derived from a C 12 -C 22 aliphatic monocarboxylic acid and a polyol selected from the group consisting of glycerol, diglycerol, triglycerol, tetraglycerol, trimethylolpropane, pentaerythritol, dipentaerythritol, tripentaerythritol and tetrapentaerythritol, said polyol having no more than 70% of the available hydroxyl groups esterified; the weight ratio of (a) to (b) ranging from 20:1 to 1:4.
Claim 2
Dependent Claim
143 words
A protective oil useful for the prevention of water staining of aluminous metal sheet consisting essentially of a major amount of an aliphatic or aromatic hydrocarbon oil having a 100° C. viscosity of 20 to 100 SUS and a minor amount but at least 0.1 weight percent of a protective composition having a hydroxyl value greater than 15 and derived from (a) an aliphatic or cycloaliphatic polybasic acid containing from 18 to 72 carbon atoms and 2 to 4 carboxyl groups and (b) a partial ester of a polyol derived from a C 12 -C 22 aliphatic monocarboxylic acid and a polyol selected from the group consisting of glycerol, diglycerol, triglycerol, tetraglycerol, trimethylolpropane, pentaerythritol, dipentaerythritol, tripentaerythritol and tetrapentaerythritol, said polyol having no more than 70% of the available hydroxyl groups esterified; the weight ratio of (a) to (b) ranging from 20:1 to 1:4.
Claim 3
Dependent Claim
37 words
The protective oil of claim 1 wherein the protective composition has a hydroxyl value between about 25 and 200 and is a blend of (a) and (b) at a weight ratio in the range 5:1 to 1:2.
Claim 4
Dependent Claim
35 words
The protective oil of claim 2 wherein (a) is a C 36 dimer acid containing less than 25% by weight trimer and higher polymer acids and (b) is derived from a C 18 fatty acid.
Claim 5
Dependent Claim
54 words
The protective oil of claim 3 containing about 0.5 to 10% by weight of a protective composition dissolved in mineral oil or mineral seal oil, and wherein (a) has an acid value of 180 to 215, saponification value of 190 to 205 and neutral equivalent from 265 to 310 and (b) is glycerol monooleate.
Claim 6
Dependent Claim
38 words
The protective oil of claim 1 wherein the protective composition has a hydroxyl value from about 25 to 200 and is obtained by reacting or partially reacting (a) and (b) at a weight ratio of 3:1 to 1:3.
Claim 7
Dependent Claim
35 words
The protective oil of claim 5 wherein (a) is a C 36 dimer acid containing less than 25% by weight trimer and higher polymer acids and (b) is derived from a C 18 fatty acid.
Claim 8
Dependent Claim
54 words
The protective oil of claim 6 containing about 0.5 to 10% by weight of a protective composition dissolved in mineral oil or mineral seal oil, and wherein (a) has an acid value of 180 to 215, saponification value of 190 to 205 and neutral equivalent from 265 to 310 and (b) is glycerol monooleate.
Claim 9
Dependent Claim
100 words
A protective composition having a hydroxyl value greater than 15 and consisting essentially of the reaction product or partial reaction product of (a) an aliphatic or cycloaliphatic hydrocarbon acid containing from 18 to 72 carbon atoms and 2 to 4 carboxyl groups and (b) a partial ester of a polyol derived from a C 18 fatty acid and a polyol selected from the group consisting of glycerol, diglycerol, triglycerol, tetraglycerol, trimethylolpropane, pentaerythritol, dipentaerythritol, tripentaerythritol and tetrapentaerythritol, said polyol having no more than 70% of the hydroxyl groups esterified, the weight ratio of (a) to (b) ranging from 20:1 to 1:4.
Claim 10
Dependent Claim
100 words
A protective composition having a hydroxyl value greater than 15 and consisting essentially of the reaction product or partial reaction product of (a) an aliphatic or cycloaliphatic hydrocarbon acid containing from 18 to 72 carbon atoms and 2 to 4 carboxyl groups and (b) a partial ester of a polyol derived from a C 18 fatty acid and a polyol selected from the group consisting of glycerol, diglycerol, triglycerol, tetraglycerol, trimethylolpropane, pentaerythritol, dipentaerythritol, tripentaerythritol and tetrapentaerythritol, said polyol having no more than 70% of the hydroxyl groups esterified, the weight ratio of (a) to (b) ranging from 20:1 to 1:4.
Claim 11
Dependent Claim
60 words
The protective composition of claim 8 having a hydroxyl value between about 25 and 200 and wherein (a) is a C 36 dimer acid obtained by the polymerization of a C 18 unsaturated monocarboxylic acid and containing less than 25 weight percent trimer or higher polymer acids and the weight ratio of (a) to (b) is about 3:1 to 1:3.
Claim 12
Dependent Claim
34 words
The protective composition of claim 9 wherein (a) has an acid value of 180 to 215, saponification value of 190 to 205 and neutral equivalent from 265 to 310 and (b) is glycerol monooleate.
References Cited (Backward Citations)
US2623887A
Cited
US2564423A
Cited
US2580036A
Cited
US2716611A
Cited
US2791510A
Cited
US3086870A
Cited
US4036771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |