Carboxylic acid-modified nitrile-based copolymer latex composition, latex composition for dip molding including the same, and molded article therefrom
AssigneeLG Chem, Ltd.
InventorsJung Eun Kim, Ji Hyun Kim, Seung Uk Yeu
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Abstract
Provided is a carboxylic acid-modified nitrile-based copolymer latex composition, and more particularly, a carboxylic acid-modified nitrile-based copolymer latex composition including a carboxylic acid-modified nitrile-based copolymer. The carboxylic acid-modified nitrile-based copolymer includes a carboxyalkyl (meth)acrylate monomer-derived repeating unit and a repeating unit derived from an ethylenic unsaturated sulfonic acid monomer including a sulfonate salt or a sulfonate ester. A latex composition for dip molding including the same, and a molded article therefrom are also provided.
Claims4
A carboxylic acid-modified nitrile-based copolymer latex composition comprising a carboxylic acid-modified nitrile-based copolymer, wherein the carboxylic acid-modified nitrile-based copolymer comprises:
- 60 wt % to 62 wt % of a conjugated diene-based monomer-derived repeating unit, wherein the conjugated diene-based monomer derived repeating unit is butadiene;
- 27 wt % to 30 wt % of an ethylenic unsaturated nitrile-based monomer-derived repeating unit, wherein the ethylenic unsaturated nitrile-based monomer-derived repeating unit is acrylonitrile;
- 2 wt % to 4 wt % of an ethylenic unsaturated acid monomer-derived repeating unit, wherein the ethylenic unsaturated acid monomer-derived repeating unit is methacrylic acid;
- 2 wt % to 4 wt % of a carboxyalkyl (meth)acrylate monomer-derived repeating unit, wherein the carboxyalkyl (meth)acrylate monomer-derived repeating unit is β-carboxyethyl acrylate;
- and
- 2 wt % to 5 wt % of an ethylenic unsaturated sulfonic acid monomer-derived repeating unit, wherein the ethylenic unsaturated sulfonic acid monomer-derived repeating unit is sodium 1-allyloxy-2-hydroxypropyl sulfonate;
- based on the total content of the carboxylic acid-modified nitrile-based copolymer;
- and wherein the ethylenic unsaturated sulfonic acid monomer-derived repeating unit and the carboxyalkyl (meth)acrylate monomer-derived repeating unit are included in a weight ratio of 1:1 to 3.
Dependencies are inferred from the claim text.