Aqueous resin emulsion
AssigneeNitto Electric Industrial Co., Ltd.
InventorsYasuo Kihara, Kenjiro Mori, Takashi Kawasaki, Keiichi Ushiyama
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Abstract
An aqueous resin emulsion is disclosed. The emulsion is obtained by emulsion copolymerizing a monomer mixture comprising (a) an acrylic acid fluoroalkyl ester derivative, (b) an acrylic acid derivative, and (c) a polyfunctional monomer for internal cross-linking, in an aqueous medium. The emulsion shows excellent polymerization stability in emulsion copolymerization for the preparation thereof and excellent dispersion stability in an aqueous medium.
Claims12
An aqueous resin emulsion having a particle size of from 0.03 to 2 .mu.m, which is obtained by emulsion copolymerizing a monomer mixture consisting of
- (a) from 60 to 99.8% by weight of an acrylic acid fluoroalkyl ester derivative represented by formula (I)
- CH.sub.2 .dbd.CR.sup.1 COOR.sup.2 (CF.sub.2).sub.n CFA.sub.2 (I)
- wherein R.sup.1 represents a hydrogen atom or a lower alkyl group, R.sup.2 represents the group --CH.sub.2 --.sub.m or the group ##STR4## wherein m represents 0 or an integer of from 1 to 12 and x+y is an integer of from 1 to 11, n represents 0 or an integer of from 1 to 12, and R.sup.3 represents a hydrogen atom or an acetyl group, and A independently represents a hydrogen atom, a fluorine atom, or CF.sub.3,
- (b) from 0.1 to 20% by weight of an acrylic acid derivative represented by formula (II)
- R.sup.4 CH.dbd.CR.sup.5 COOH (III)
- wherein R.sup.4 represents a hydrogen atom, a lower alkyl group or a carboxyl group, and R.sup.5 represents a hydrogen atom or a lower alkyl group, and
- (c) from 0.1 to 20% by weight of a polyfunctional monomer for internal cross-linking, in an aqueous medium.
Dependencies are inferred from the claim text.