Polymer microparticles, resin modifier, and resin composition
AssigneeKaneka Corporation
InventorNobuyoshi Maizuru
Life of this patent
Estimating the term…
Abstract
Fine polymer particles for a resin composition that provides a cured product or molded product having excellent elastic modulus and impact resistance are provided. The fine polymer particles contain a graft copolymer that includes a crosslinked core layer containing a polymer having a specific glass transition temperature and a shell layer grafted to the crosslinked core layer. The shell layer contains a polymer having a specific glass transition temperature. The fine polymer particles have a volume-average particle size of 0.01 μm to 1.00 μm.
Claims14
Fine polymer particles comprising a graft copolymer that includes a crosslinked core layer and a shell layer grafted to the crosslinked core layer, wherein:
- the crosslinked core layer comprises a first crosslinked core layer and a second crosslinked core layer which is formed on the outer side of the first crosslinked core layer,
- the first crosslinked core layer contains a polymer C1 having a glass transition temperature of 75 °C or higher,
- the second crosslinked core layer contains a polymer C2 having a glass transition temperature of 0 °C or lower;
- shell layer contains a polymer S having a glass the transition temperature of 0 °C or lower, and
- the fine polymer particles have a volume-average particle size of 0.01 μm to 1.00 μm.
Dependencies are inferred from the claim text.