Hardenable multi-part acrylic composition
US11548966B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2018 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/53
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a hardenable multi-part acrylic composition. The composition has at least two parts which react with each other upon being mixed together to progressively harden to form a solid cement, such as a bone cement. The beads in the first part comprise an acrylic bead polymer core produced by suspension polymerisation and having a Tg of >70° C. and emulsion polymerised acrylic microparticles at least partially coating the surface of the acrylic bead polymer core. The microparticles may form a porous coalesced network. The bone cement composition comprises the first part and a liquid second part and optionally, further parts. The parts are operable to form a cement which hardens to a solid mass upon mixing of the parts together. The composition further comprises an acrylic monomer component in the second part and an initiator component. A method of production of coated beads for the hardenable multipart composition and a solid cement is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.