Metal corrosion inhibitor
AssigneeNippon Shokubai Co., Ltd.
InventorsTakeshi TAKAYAMA, Masashi TONOYA
Life of this patent
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Abstract
The present invention provides a novel metal corrosion inhibitor containing a compound having a specific structure. The present invention relates to a metal corrosion inhibitor including a compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt; one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester; and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other:
Claims9
1-4. (canceled)
A metal corrosion inhibitor comprising:
- a compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt;
- one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester;
- and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other:
- wherein R1, R2, and R3 are the same as or different from each other and are each a hydrogen atom or a methyl group;
- R4 is a hydrogen atom or a C1-C30 hydrocarbon group;
- (AO)s are the same as or different from each other and are each an oxyalkylene group;
- n is an average number of moles of the oxyalkylene group added and is 1 to 300;
- and x is 0 to 4.
A composition comprising:
- a carboxyl group-containing polymer;
- and
- a compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt;
- one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester;
- and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other:
- wherein R1, R2, and R3 are the same as or different from each other and are each a hydrogen atom or a methyl group;
- R4 is a hydrogen atom or a C1-C30 hydrocarbon group;
- (AO)s are the same as or different from each other and are each an oxyalkylene group;
- n is an average number of moles of the oxyalkylene group added and is 1 to 300;
- and x is 0 to 4,
- the compound (X) being present in an amount of 0.01 to 5 mass % relative to 100 mass % of the carboxyl group-containing polymer.
A method for storing a carboxyl group-containing polymer, the method comprising
- placing a compound (X) in a container for storage at a concentration of 50 to 30000 ppm, the compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt;
- one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester;
- and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other:
- wherein R1, R2, and R3 are the same as or different from each other and are each a hydrogen atom or a methyl group;
- R4 is a hydrogen atom or a C1-C30 hydrocarbon group;
- (AO)s are the same as or different from each other and are each an oxyalkylene group;
- n is an average number of moles of the oxyalkylene group added and is 1 to 300;
- and x is 0 to 4.
A method for transporting a carboxyl group-containing polymer, the method comprising
- placing a compound (X) in a container for transport at a concentration of 50 to 30000 ppm, the compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt;
- one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester;
- and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other:
- wherein R1, R2, and R3 are the same as or different from each other and are each a hydrogen atom or a methyl group;
- R4 is a hydrogen atom or a C1-C30 hydrocarbon group;
- (AO)s are the same as or different from each other and are each an oxyalkylene group;
- n is an average number of moles of the oxyalkylene group added and is 1 to 300;
- and x is 0 to 4.
A method for using as a metal corrosion inhibitor a compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt;
- one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester;
- and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other:
- wherein R1, R2, and R3 are the same as or different from each other and are each a hydrogen atom or a methyl group;
- R4 is a hydrogen atom or a C1-C30 hydrocarbon group;
- (AO)s are the same as or different from each other and are each an oxyalkylene group;
- n is an average number of moles of the oxyalkylene group added and is 1 to 300;
- and x is 0 to 4.
Dependencies are inferred from the claim text.