Deformed shaped particles and method for producing the same
AssigneeSekisui Plastics Co., Ltd.
InventorRyosuke Harada
Life of this patent
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Abstract
A method for producing a deformed shaped particles comprising step of: absorbing a polymerizable vinyl type monomer contained in an aqueous emulsion in a seed particles and polymerizing an absorbed polymerizable vinyl type monomer, wherein the seed particles are a resin particles which are derived from a (meth)acrylic ester having an ester part containing at least an alkyl group with a number of carbon atoms of 3 or more and less than 6, and which have a weight average molecular weight of 150000 to 1000000 (measured by GPC: gel permeation chromatography) and the polymerizable vinyl type monomer contains 5 to 50 wt. % of a crosslinkable monomer to the entire amount of the polymerizable vinyl type monomer.
Claims14
A method for producing a deformed-shaped particle comprising:
- absorbing a polymerizable vinyl type monomer contained in the aqueous phase of an aqueous emulsion into a seed particle and polymerizing the absorbed polymerizable vinyl type monomer, wherein the aqueous phase includes only water or a mixture of water and a water-soluble solvent, and,
- wherein the seed particle is a resin particle which is derived from a (meth)acrylic ester having an ester part containing at least an alkyl group of 3-5 carbon atoms, and which have a weight average molecular weight of 150000 to 1000000 as measured by gel permeation chromatography and the polymerizable vinyl type monomer contains 5 to 50 wt. % of a crosslinkable monomer based on the entire amount of the polymerizable vinyl type monomer.
A deformed-shaped particle comprising a notch around the diameter and made of a polymer derived from a polymerizable vinyl type monomer containing 5 to 50 wt. % of a crosslinkable monomer.
A deformed-shaped particle comprising a mushroom-type shape and made from a polymer derived from a polymerizable vinyl type monomer containing 5 to 50 wt. % of a crosslinkable monomer.
Dependencies are inferred from the claim text.