COPOLYMER LATEX AND COMPOSITION FOR COATED PAPER, CONTAINING THE SAME

Japanese Patent JP3681220

B2

PROBLEM TO BE SOLVED: To obtain a copolymer latex useful for producing a composition for a coated paper, having a specific particle diameter distribution and electron charge density, low in viscosity, excellent in stability and fluidity, by subjecting a prescribed monomer mixture to emulsion polymerization.
SOLUTION: This latex is obtained by subjecting 100 pts.wt. of a monomer mixture comprising (A) 5-55 pts.wt. of an aliphatic diene-based monomer, (B) 0.5-10 pts.wt. of an ethylene-based unsaturated monomer and (C) 35-94.5 pts.wt. of another copolymerizable monomer to emulsion copolymerization. The particles of the latex are controlled so that the particle diameter (Dn) corresponding to the peak of the minimum particle diameter component in a particle diameter distribution based on number is ≤100nm, the particle diameter (Dw) corresponding to the peak top of the maximum particle diameter component in a particle diameter distribution based, on weight is ≤60nm, the particle diameter distributions satisfy the relation ship Dn+15<Dw and the density of carboxyl existing in the surface of the particles is regulated to 1.2 to 2.5 particles/(nm)2.

JPS53130751	WATER-SOLUBLE RESIN AND ITS PRODUCTION
JPS57170937	RUBBER COMPOSITION
WO/1996/023027	RUBBER COMPOSITION AND PROCESS FOR PREPARING THE SAME

Koji Takano
Goro Kuwamura
Kazuo Yamamoto
Kenichi Nakane

JP16436796A

August 10, 2005

June 25, 1996

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Mitsui Chemicals, Inc.

C08L9/00; C08L9/10; C08L21/02; C09D109/04; C09D109/10; C09D121/00; D21H19/56; D21H19/58; D21H21/16; (IPC1-7): C08L9/10; C09D109/10; D21H21/16

JP6263925A

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