Carboxylic acid modified-nitrile based copolymer latex and latex composition for dip-forming comprising the copolymer latex and article formed by the composition

A latex composition for dip molding includes a carboxylic acid-modified nitrile-based copolymer latex having pKa of 9.5 to 10.2 and satisfying General Formulas 1 and 2.0.85≤P≤1.0, P=CVD/CV0 [General Formula 1]5≤M≤20, M=m1×m2 [General Formula 2]wherein CV0 represents a capillary viscosity which is...

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Bibliographische Detailangaben
Hauptverfasser:	Kwon, Won Sang, Yeu, Seung Uk, Lee, Ji Young, Jang, Myung Su, Kim, Jung Eun
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A latex composition for dip molding includes a carboxylic acid-modified nitrile-based copolymer latex having pKa of 9.5 to 10.2 and satisfying General Formulas 1 and 2.0.85≤P≤1.0, P=CVD/CV0 [General Formula 1]5≤M≤20, M=m1×m2 [General Formula 2]wherein CV0 represents a capillary viscosity which is measured in a swollen in a methyl ethyl ketone solvent,CVD represents a capillary viscosity in a deswollen state,m1 represents an insolubility of a dried film in the methyl ethyl ketone solvent, andm2 represents a swelling index of the dried film in the methyl ethyl ketone solvent, wherein a carboxylic acid-modified nitrile-based copolymer of carboxylic acid-modified nitrile-based copolymer latex includes: a conjugated diene-based monomer-derived unit, an ethylenic unsaturated nitrile-based monomer-derived unit, and an ethylenic unsaturated acid monomer-derived unit.