Powder of agglomerated fine particles of crosslinked allyl copolymer
AssigneeDaiso Co., Ltd.
InventorsYasumi Shimizu, Seiji Nakamura, Koji Aoki
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Abstract
Powder of agglomerated crosslinked allyl copolymer fine particles of (a) more than 40% by weight to 80% by weight of diallyl phthalate, (b) 0.05% by weight to 2% by weight of an α,β-unsaturated carboxylic acid and (c) a balance of at least one vinyl monomer selected from the group consisting of an aromatic vinyl compound and an acrylate ester or methacrylate ester of an alcohol having 1 to 8 carbon atoms, is very excellent in collapse dispersibility in an organic matrix.
Claims6
Powder of agglomerated crosslinked allyl copolymer fine particles obtainable by emulsion-copolymerizing (a) more than 40% by weight to 80% by weight of diallyl phthalate, (b) 0.05% by weight to 2% by weight of an α,β-unsaturated carboxylic acid and (c) a balance of at least one vinyl monomer selected from the group consisting of an acrylate ester and methacrylate ester of an alcohol having 1 to 8 carbon atoms in an aqueous medium to give an aqueous emulsion containing crosslinked allyl copolymer fine particles having an average particle diameter of at most 0.5 μm and separating the aqueous medium from the aqueous emulsion.
An emulsion comprising:
- (i) an allyl copolymer of (a) more than 40% by weight to 80% by weight of diallyl phthalate, (b) 0.05% by weight to 2% by weight of an α,β-unsaturated carboxylic acid and (c) a balance of at least one vinyl monomer selected from the group consisting of an acrylate ester and methacrylate ester of alcohol having 1 to 8 carbon atoms, and
- (ii) an aqueous medium,
- wherein crosslinked allyl copolymer fine particles contained in the emulsion have an average particle diameter of at most 0.5 μm.
Crosslinked allyl copolymer fine particles comprising an allyl copolymer of (a) more than 40% by weight to 80% by weight of diallyl phthalate, (b) 0.05% by weight to 2% by weight of an α,β-unsaturated carboxylic acid and (c) a balance of at least one vinyl monomer selected from the group consisting of an acrylate ester and methacrylate ester of an alcohol having 1 to 8 carbon atoms,
- wherein the crosslinked allyl copolymer fine particles have an average particle diameter of at most 0.5 μm.
Dependencies are inferred from the claim text.