AQUEOUS EMULSION AND FLAME-RETARDANT COATING MATERIAL

Japanese Patent JP3590457

B2

PROBLEM TO BE SOLVED: To produce an aqueous emulsion of a polymer of, e.g. vinyl acetate and a polymer wherein a poly(meth)acrylic ester exists mainy in the peripheral part of the dispersoid in the presence of an emulsifier and obtain a coating material with good film-forming properties and flame retardancy by using the aqueous emulsion.
SOLUTION: This aqueous emulsion is produced by using a dispersant containing at least 50% emulsifier and particularly consisting of an emulsifier and a polyvinyl alcohol at a weight ratio of (5:5) to (9:1), wherein the dispersoid consists of a vinyl ester polymer (A) and a polymer (B) comprising at least one kind of (meth)acrylic ester units and styrene monomer units at a weight ratio of polymer A to polymer B of (9:1) to (1:9) and wherein the polymer B is polymerized after the emulsion polymerization of the polymer A so that the polymer A is located in the central part of the dispersoid while the polymer B is located mainly in the peripheral part thereof. This emulsion has good film-forming properties and flame retardancy and is suitable as a binder for a coating material. It is preferable that the component A consists mainly of vinyl acetate.

Masato Nakamae
Tetsuo Murakami
Ken Yuki

JP17481895A

November 17, 2004

July 11, 1995

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KURARAY CO.,LTD.

C08L31/04; C08F2/24; C08F2/38; C08F2/44; C08F12/00; C08F12/04; C08F18/00; C08F18/08; C08F20/10; C08F20/18; C08L33/04; C08L33/06; C09D5/00; C09D5/18; C09D133/04; C09D133/06; (IPC1-7): C08L31/04; C08F2/24; C08F2/38; C08F2/44; C08F12/04; C08F18/08; C08F20/18; C08L33/06; C09D5/00; C09D5/18; C09D133/06

JP4309549A
JP2080482A
JP48026229A
JP6172372A
JP5163472A
JP3197505A
JP63308002A
JP5716082A

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