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US 12,180,413 B2Granted
Solid coolant concentrates and production thereof
AssigneeBASF SE
InventorsHarald Dietl, Uwe Nitzschke, Mario Sandor, Ruediger Schmitz
Life of this patent
Estimating the term…
Abstract
The present invention describes novel coolant concentrates and the production and use thereof.
Claims16
A process for producing a concentrate comprising not more than 15% by weight of water (A),
- as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- a total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 0.01% to 10% by weight,
- a proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 0.4% by weight,
- a proportion of nitrites in the overall composition does not exceed 0.1% by weight, and
- the remainder to 100% by weight is at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B),
- the process comprising:
- admixing:
- not more than 10% by weight of water (A), not more than 10% by weight of alkylene glycol, alkylene glycol monoalkyl ethers, and glycerol (B),
- as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- to form a solid composition,
- with the proviso that
- a total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 90% to 95% by weight,
- a proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 1% by weight,
- a proportion of nitrites in the overall composition does not exceed 0.25% by weight, and
- a sum total of all components is always 100% by weight,
- admixing the solid composition with an appropriate amount of the at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B), hence obtaining a superconcentrate comprising
- not more than 15% by weight of water (A), as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- the total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 0.05% to 30% by weight,
- the proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 0.6% by weight,
- the proportion of nitrites in the overall composition does not exceed 0.2% by weight, and
- the remainder to 100% by weight is at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B),
- and then,
- adding an appropriate amount of water (A), or alkylene glycol, alkylene glycol monoalkyl ether and glycerol (B), or both (A) and (B) thereto.
40 more elements
A process for producing a concentrate comprising not more than 15% by weight of water (A),
- as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- a total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 0.01% to 10% by weight,
- a proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 0.4% by weight,
- a proportion of nitrites in the overall composition does not exceed 0.1% by weight, and
- the remainder to 100% by weight is at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B),
- the process comprising:
- forming a solid composition,
- adding an appropriate amount of the at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B) and an appropriate amount of water (A) in any sequence to the solid composition, wherein the solid composition is formed by admixing:
- not more than 10% by weight of water (A),
- not more than 10% by weight of alkylene glycol, alkylene glycol monoalkyl ethers, and glycerol (B),
- as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- a total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 90% to 95% by weight,
- a proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 1% by weight,
- a proportion of nitrites in the overall composition does not exceed 0.25% by weight, and
- a sum total of all components is always 100% by weight.
26 more elements
A process for producing a coolant comprising at least 40% by weight of water (A),
- at least 30% by weight of alkylene glycol, alkylene glycol monoalkyl ether, and glycerol (B),
- as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- a total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is up to 10% by weight,
- a proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 0.2% by weight,
- a proportion of nitrites in the overall composition does not exceed 0.05% by weight, and
- a sum total of all components is always 100% by weight,
- the process comprising:
- admixing
- not more than 10% by weight of water (A),
- not more than 10% by weight of alkylene glycol, alkylene glycol monoalkyl ethers, and glycerol (B),
- as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- to form a solid composition,
- with the proviso that
- a total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 90% to 95% by weight,
- a proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 1% by weight,
- a proportion of nitrites in the overall composition does not exceed 0.25% by weight, and
- a sum total of all components is always 100% by weight,
- mixing the solid composition with an appropriate amount of at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B), hence obtaining a superconcentrate comprising
- not more than 15% by weight of water (A), as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- the total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 0.05% to 30% by weight,
- the proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 0.6% by weight,
- the proportion of nitrites in the overall composition does not exceed 0.2% by weight, and
- the remainder to 100% by weight is at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B),
- and then,
- adding an appropriate amount of water (A), or alkylene glycol, alkylene glycol monoalkyl ether and glycerol (B), or both (A) and (B) thereto, hence obtaining a concentrate comprising
- not more than 15% by weight of water (A), as inhibitors (C):
- (C1) at least one inorganic compound selected from the group consisting of silicates, borates, nitrates, molybdates, and phosphates,
- (C2a) optionally, benzoic acid as aromatic monocarboxylic acid,
- (C3) at least one organic dicarboxylic acid having 4 to 20 carbon atoms,
- (C4) at least one azole,
- (D) optionally, at least one inorganic base,
- (E) at least one other constituent selected from the group consisting of hard water stabilizers, defoamers, dyes, and bitter substances,
- with the proviso that
- the total proportion of the inhibitor components (C), inorganic base components (D), and other components (E), based on the overall composition, is 0.01% to 10% by weight,
- the proportion of aliphatic monocarboxylic acids in the overall composition does not exceed 0.4% by weight,
- the proportion of nitrites in the overall composition does not exceed 0.1% by weight, and
- the remainder to 100% by weight is at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol (B),
- and then,
- adding an appropriate amount of water (A) thereto, hence obtaining a coolant.
56 more elements
Dependencies are inferred from the claim text.