Expandable polystyrene resin particles, polystyrene pre-expanded particles, and foam molded body
US11312835B2 · kind B2 · utility
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3References
6Claims
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Key dates
| Filing date | Feb 3, 2020 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | May 29, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2483/07
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Expandable polystyrene-based resin particles may include a styrene-based monomer, a polysiloxane-containing macro monomer, and a coating composition having a melting point of 40° C. or greater. A coefficient of static friction of a foamed molded product, obtained by pre-expanding the expandable polystyrene-based resin particles and molding the pre-expanded expandable polystyrene-based resin particles, may be 4.0 or less. The expandable polystyrene-based resin particles may have a surface layer part that contains polysiloxane as a main component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.