Chlorosulfonated polyethylene latex
AssigneeSumitomo Seika Chemicals Co., Ltd.
InventorsJun Sakata, Hiromasa Miyazaki, Taiji Matsukawa
Life of this patent
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Abstract
A chlorosulfonated polyethylene latex, which is safe for living bodies and the environment and can be used as a latex component in a resorcin-formalin-latex adhesive, contains an aqueous dispersion medium, chlorosulfonated polyethylene, and an emulsifying agent of a polyoxyalkylene alkyl ether sulfate of formula (I) below and a fatty acid salt. The latex is excellent in standing stability and mechanical stability. In formula (I), R1, R2, n, and M represent an alkyl group of 6 to 20 carbon atoms, hydrogen or a methyl group, an integer of 2 to 40, and an alkali metal, respectively. R1—O—(CH2CHR2—O)n—SO3M (I)
Claims15
A chlorosulfonated polyethylene latex, comprising:
- an aqueous dispersion medium,
- chlorosulfonated polyethylene,
- a polyoxyalkylene alkyl ether sulfate represented by formula (I) below, and a fatty acid salt.
- [Chem. 1]
- R1—O—(CH2CHR2—O)n—SO3M (I)
- (in formula (I), R1 represents an alkyl group of 6 to 20 carbon atoms, R2 represents hydrogen or a methyl group, n represents an integer of 2 to 40, and M represents an alkali metal.)
A method for producing a chlorosulfonated polyethylene latex, comprising the steps of:
- dispersing chlorosulfonated polyethylene dissolved in an organic solvent in an aqueous dispersion medium in the presence of a polyoxyalkylene alkyl ether sulfate represented by formula (I) below and a fatty acid salt, to form an emulsion, and
- removing the organic solvent from the emulsion.
- [Chem. 2]
- R1—O—(CH2CHR2—O)n—SO3M (I)
- (in formula (I), R1 represents an alkyl group of 6 to 20 carbon atoms, R2 represents hydrogen or a methyl group, n represents an integer of 2 to 40, and M represents an alkali metal.)
An emulsifying agent for chlorosulfonated polyethylene, comprising:
- a first agent comprising a polyoxyalkylene alkyl ether sulfate represented by formula (I) below, and
- a second agent comprising a fatty acid salt.
- [Chem. 3]
- R1—O—(CH2CHR2—O)n—SO3M (I)
- (in formula (I), R1 represents an alkyl group of 6 to 20 carbon atoms, R2 represents hydrogen or a methyl group, n represents an integer of 2 to 40, and M represents an alkali metal.)
Dependencies are inferred from the claim text.