Thermally foamable microsphere and production process thereof

Details Thermally foamable microsphere and production process thereof Thermally foamable microsphere and production process thereof

2011-04-26

2011-04-26

Seidleck, James (Department: 1765)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C428S402210, C428S403000, C428S405000, C264S004000, C523S210000, C523S212000

Reexamination Certificate

active

07931967

ABSTRACT:
The invention provides a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer, wherein the shell contains an organosilicon compound, and a process for producing a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer by suspension polymerization of a polymerizable mixture containing at least a foaming agent and a polymerizable monomer in an aqueous dispersion medium, wherein the polymerizable mixture is suspension polymerized in the presence of the organosilicon compound.

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