Method for production of hollow particle
US9950303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Nov 25, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a method for the production of a hollow particle, which can easily produce a hollow particle having plural spaces formed inside. The method for the production of a hollow particle is a method for the production of a hollow particle having plural spaces inside thereof, which comprises dispersing an oil-phase liquid prepared by dissolving or dispersing a polymerizable monomer and an oil-soluble polymerization initiator having polymerization initiation ability for the polymerizable monomer in a hydrophobic solvent, in an aqueous medium containing a water-soluble polymerization initiator having polymerization initiation ability for the polymerizable monomer, to form an oil droplet; and applying the oil-soluble polymerization initiator and the water-soluble polymerization initiator at the same time to the polymerizable monomer, and polymerizing the polymerizable monomer, to form a shell dividing plural spaces in a particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.