Amphoteric amino sulfonate derivatives of epoxy resins
AssigneeNippon Paint Co., Ltd.
InventorsShin-Ichi Ishikura, Kazunori Kanda, Ryuzo Mizuguchi
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Abstract
Amphoteric amino sulfonate derivatives of epoxy resins having at least one terminal group of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen or methyl, R.sub.3 is hydrogen or C.sub.1 -C.sub.20 alkyl or substituted alkyl, and R.sub.4 is C.sub.1 -C.sub.6 alkylene or substituted alkylene, which are reaction products of an epoxy resin having a plurality of terminal groups of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are as defined, with an amino sulfonate of the formula: R.sub.3 --NH--R.sub.4 --SO.sub.3 M wherein R.sub.3 and R.sub.4 are as defined, and M is a cation.
Claims11
A water-dispersible modified epoxy resin composition having at least one terminal amphoteric amino sulfonate group of the formula:
- ##STR5## wherein R.sub.1 and R.sub.2 are hydrogen or methyl, R.sub.3 is hydrogen or C.sub.1 -C.sub.20 alkyl optionally substituted with higher alkylsulfinyl or higher alkanoyloxy, and R.sub.4 is C.sub.1 -C.sub.6 alkylene optionally substituted with 2-hydroxyethyl, said composition being a reaction product of an epoxy resin having a plurality of terminal groups of the formula:
- ##STR6## wherein R.sub.1 and R.sub.2 are as defined, with an amino sulfonate of the formula:
- R.sub.3 --NH--R.sub.4 --SO.sub.3 M
- wherein R.sub.3 and R.sub.4 are as defined, and M is a cation, with removal of said cation.
An emulsion type coating composition comprising a polymeric emulsion in combination with an aminoplast resin;
- wherein said polymeric emulsion is a soap-free polymeric emulsion comprising a dispersed phase of finely divided particles of a film-forming polymer of ethylenically unsaturated unit monomers, and an aqueous continuous phase containing a water-dispersible modified epoxy resin composition having at least one terminal amphoteric amino sulfonate group of the formula:
- ##STR7## wherein R.sub.1 and R.sub.2 are hydrogen or methyl, R.sub.3 is hydrogen or C.sub.1 -C.sub.20 alkyl optionally substituted with higher alkylsulfinyl or higher alkanoyloxy, and R.sub.4 is C.sub.1 -C.sub.6 alkylene optionally substituted with 2-hydroxyethyl, said composition being a reaction product of an epoxy resin having a plurality of terminal groups of the formula:
- ##STR8## wherein R.sub.1 and R.sub.2 are as defined, with an amino sulfonate of the formula:
- R.sub.3 --NH--R.sub.4 --SO.sub.3 M
- wherein R.sub.3 and R.sub.4 are as defined, and M is a cation, with removal of said cation.
Dependencies are inferred from the claim text.